Oracle 10g Release 2 10.1.2 Application Server Adapters User’s Guide

Below you will find brief information for Application Server Adapters 10g Release 2 10.1.2. This guide describes how to use the technology adapters that are provided with Oracle BPEL Process Manager. The user will need to connect to a database to take advantage of this feature.
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Oracle&reg; Application Server Adapters for Files,
FTP, Databases, and Enterprise Messaging
User’s Guide
10g Release 2 (10.1.2)
B25307-02
February 2006
Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide, 10g
Release 2 (10.1.2)
B25307-02
Copyright &copy; 2005, 2006, Oracle. All rights reserved.
Primary Author: Deanna Bradshaw, Mark Kennedy, Craig West
Contributing Author: Rima Dave
Contributors: Oracle BPEL Process Manager development, product management, and quality assurance
teams
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Contents
Preface ................................................................................................................................................................. xi
Audience....................................................................................................................................................... xi
Documentation Accessibility ..................................................................................................................... xi
Related Documents .................................................................................................................................... xii
Conventions ................................................................................................................................................ xii
1 Introduction to Oracle Adapters for Files, FTP, Databases, and Enterprise
Messaging
1.1
1.2
2
Overview of Oracle BPEL Process Manager Technology Adapters.................................... 1-1
Summary ...................................................................................................................................... 1-3
Oracle Application Server Adapter for Files/FTP
2.1
Introduction to the File and FTP Adapters ............................................................................. 2-1
2.1.1
File and FTP Adapter Features .......................................................................................... 2-1
2.1.2
File and FTP Adapter Architecture ................................................................................... 2-3
2.1.3
File and FTP Adapter Integration with Oracle BPEL Process Manager ...................... 2-3
2.2
File and FTP Adapter Concepts ................................................................................................ 2-4
2.2.1
File Adapter Read File Concepts ....................................................................................... 2-4
2.2.1.1
Inbound Operation....................................................................................................... 2-4
2.2.1.2
Inbound File Directory Specifications ....................................................................... 2-5
2.2.1.3
File Matching and Batch Processing .......................................................................... 2-7
2.2.1.4
File Polling .................................................................................................................. 2-10
2.2.1.5
File Processing............................................................................................................ 2-11
2.2.1.6
Postprocessing ........................................................................................................... 2-11
2.2.1.7
Native Data Translation ........................................................................................... 2-11
2.2.1.8
Error Handling........................................................................................................... 2-12
2.2.1.9
Guaranteed Delivery and Recovery from Server Failures .................................. 2-15
2.2.1.10
Inbound Service Name WSDL File ......................................................................... 2-15
2.2.1.11
Inbound Header WSDL File..................................................................................... 2-16
2.2.1.12
Synchronous File Reading Capabilities.................................................................. 2-17
2.2.2
File Adapter Write File Concepts ................................................................................... 2-19
2.2.2.1
Outbound Operation................................................................................................. 2-19
2.2.2.2
Outbound File Directory Creation .......................................................................... 2-19
2.2.2.3
Native Data Translation ........................................................................................... 2-25
2.2.2.4
Error Handling........................................................................................................... 2-25
iii
2.2.2.5
Outbound Service Name WSDL File ...................................................................... 2-26
2.2.2.6
Outbound Header WSDL File ................................................................................. 2-27
2.2.3
FTP Adapter for Get File Concepts ................................................................................ 2-27
2.2.4
FTP Adapter for Put File Concepts ................................................................................ 2-32
2.3
Using Secure FTP with the FTP Adapter.............................................................................. 2-34
2.3.1
Secure FTP Overview....................................................................................................... 2-34
2.3.2
Installing and Configuring OpenSSL............................................................................. 2-35
2.3.3
Installing and Configuring vsftpd.................................................................................. 2-36
2.3.4
Creating an Oracle Wallet ............................................................................................... 2-38
2.3.5
Setting Up the FTP Adapter ............................................................................................ 2-38
2.4
Use Cases for the File and FTP Adapters ............................................................................. 2-39
2.4.1
File Adapter Use Cases .................................................................................................... 2-39
2.4.1.1
File Reading ............................................................................................................... 2-40
2.4.1.2
Message Debatching ................................................................................................ 2-40
2.4.1.3
Reading Delimited Content Files ............................................................................ 2-40
2.4.1.4
Reading Positional (Fixed Length) Content Files ................................................. 2-40
2.4.1.5
File Writing................................................................................................................. 2-40
2.4.2
FTP Adapter Use Case ..................................................................................................... 2-40
2.5
Summary ................................................................................................................................... 2-41
3
Oracle Application Server Adapter for Advanced Queuing
3.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.3
3.3.1
3.3.1.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.3.10
3.4
4
Oracle Application Server Adapter for Databases
4.1
4.1.1
4.1.2
4.2
4.2.1
iv
Introduction to the AQ Adapter ............................................................................................... 3-1
AQ Adapter Features ................................................................................................................. 3-1
Enqueue-Specific Features (Message Production) .......................................................... 3-2
Dequeue and Enqueue Features........................................................................................ 3-3
Supported ADT Payload Types......................................................................................... 3-4
Native Format Builder Wizard .......................................................................................... 3-5
Use Cases for the AQ Adapter .................................................................................................. 3-6
Adapter Configuration Wizard Walkthrough................................................................. 3-6
Generated WSDL file ................................................................................................ 3-15
Dequeuing and Enqueuing Object and ADT Payloads .............................................. 3-16
Dequeuing One Column of the Object/ADT Payload................................................ 3-17
Processing Large Numbers of Messages ....................................................................... 3-17
Using Correlation ID for Filtering Messages During Dequeue ................................. 3-17
Enqueuing and Dequeuing from Multisubscriber Queues ........................................ 3-18
Rule-Based Subscription for Multiconsumer Queues ................................................. 3-20
Using AQ Headers in a BPEL Process ........................................................................... 3-21
Header Variables in JDeveloper BPEL Designer.......................................................... 3-21
Configuring a Message Rejection Handler for Data Errors........................................ 3-22
Summary ................................................................................................................................... 3-22
Introduction to the Database Adapter .....................................................................................
Database Adapter Features ................................................................................................
Design Overview .................................................................................................................
Database Adapter Concepts ......................................................................................................
Relational-to-XML Mapping ..............................................................................................
4-1
4-1
4-2
4-4
4-4
4.2.1.1
Relational Types to XML Schema Types................................................................... 4-7
4.2.1.2
Mapping Any Relational Schema to Any XML Schema......................................... 4-8
4.2.2
SQL Operations as Web Services....................................................................................... 4-8
4.2.2.1
DML Operations ........................................................................................................... 4-9
4.2.2.2
Polling Strategies ....................................................................................................... 4-10
4.3
Use Cases for the Database Adapter ..................................................................................... 4-17
4.4
The Adapter Configuration Wizard...................................................................................... 4-18
4.4.1
Starting the Adapter Configuration Wizard................................................................. 4-19
4.4.2
Connecting to a Database ................................................................................................ 4-19
4.4.3
Selecting the Operation Type.......................................................................................... 4-20
4.4.4
Selecting and Importing Tables ...................................................................................... 4-21
4.4.5
Defining Primary Keys .................................................................................................... 4-22
4.4.6
Creating Relationships ..................................................................................................... 4-23
4.4.6.1
What Happens When Relationships Are Created or Removed ......................... 4-25
4.4.6.2
Different Types of One-to-One Mappings ............................................................. 4-25
4.4.7
Creating the Object Model............................................................................................... 4-26
4.4.8
Defining a WHERE Clause.............................................................................................. 4-26
4.4.9
Choosing an After-Read Strategy................................................................................... 4-28
4.4.9.1
Delete the Rows that Were Read ............................................................................. 4-29
4.4.9.2
Update a Field in the Table (Logical Delete) ......................................................... 4-29
4.4.9.3
Update a Sequencing Table...................................................................................... 4-30
4.4.10
Internal Processes at Design Time.................................................................................. 4-31
4.4.10.1
Importing Tables........................................................................................................ 4-31
4.4.10.2
Creating Relationships.............................................................................................. 4-31
4.4.10.3
Generating Design-Time Artifacts .......................................................................... 4-32
4.5
Advanced Configuration ........................................................................................................ 4-32
4.5.1
The OracleAS TopLink Mapping Workbench Project................................................. 4-32
4.5.1.1
Deleting a Descriptor ................................................................................................ 4-33
4.5.1.2
Returning Partial Objects When Querying ............................................................ 4-33
4.5.1.3
Renaming a Mapping................................................................................................ 4-35
4.5.1.4
Configuring Offline Database Tables ..................................................................... 4-35
4.5.2
Relational-to-XML Mappings (toplink_mappings.xml) ............................................. 4-36
4.5.3
The Service Definition (WSDL)....................................................................................... 4-38
4.5.3.1
DBWriteInteractionSpec ........................................................................................... 4-39
4.5.3.2
DBReadInteractionSpec ............................................................................................ 4-40
4.5.3.3
DBActivationSpec...................................................................................................... 4-41
4.5.4
XML Schema Definition (XSD) ....................................................................................... 4-43
4.5.5
Deployment ....................................................................................................................... 4-44
4.5.5.1
Design-Time and Run-time Connection Information .......................................... 4-44
4.5.5.2
Properties of the oc4j-ra.xml File............................................................................. 4-48
4.5.5.3
Advanced Properties of the oc4j-ra.xml File.......................................................... 4-50
4.5.6
Performance....................................................................................................................... 4-51
4.5.6.1
Outbound Write: Should You Use Merge, Write, or Insert? ............................... 4-51
4.5.6.2
The OracleAS TopLink Cache: When Should You Use It? .................................. 4-52
4.5.6.3
Existence Checking.................................................................................................... 4-52
4.5.6.4
Inbound Polling: maxRaiseSize ............................................................................... 4-52
4.5.6.5
Inbound Polling: Choosing a Polling Strategy ...................................................... 4-52
v
4.5.6.6
Relationship Reading (Batch Attribute and Joined Attribute Reading) ............ 4-53
4.5.6.7
Connection Pooling ................................................................................................... 4-53
4.5.6.8
Inbound Distributed Polling.................................................................................... 4-53
4.6
Third-Party Database Support ............................................................................................... 4-54
4.6.1
Design Time....................................................................................................................... 4-55
4.6.1.1
Using a Microsoft SQL Server Database ................................................................ 4-56
4.6.1.2
Using an IBM DB2 Database.................................................................................... 4-57
4.6.1.3
Using a Sybase Database .......................................................................................... 4-57
4.6.1.4
Using an InterSystems Cach&eacute; Database ................................................................. 4-58
4.6.1.5
Using a MySQL 4 Database...................................................................................... 4-58
4.6.1.6
Summary of Third-Party and Oracle Lite Database Connection Information . 4-58
4.6.2
Run Time............................................................................................................................ 4-59
4.7
Stored Procedure and Function Support.............................................................................. 4-60
4.7.1
Design Time: Using the Adapter Configuration Wizard............................................ 4-60
4.7.1.1
Using Top-Level Standalone APIs .......................................................................... 4-60
4.7.1.2
Using Packaged APIs and Overloading................................................................. 4-63
4.7.2
Design Time: WSDL and XSD Generation.................................................................... 4-65
4.7.2.1
The WSDL–XSD Relationship.................................................................................. 4-65
4.7.2.2
Supported Primitive Datatypes............................................................................... 4-66
4.7.2.3
Generated XSD Attributes........................................................................................ 4-67
4.7.2.4
User-Defined Types................................................................................................... 4-68
4.7.2.5
Complex User-Defined Types ................................................................................. 4-69
4.7.2.6
Object Type Inheritance............................................................................................ 4-70
4.7.2.7
Object References....................................................................................................... 4-70
4.7.2.8
Referencing Types in Other Schemas ..................................................................... 4-71
4.7.3
Run Time: Before Stored Procedure Invocation ........................................................ 4-71
4.7.3.1
Value Binding............................................................................................................. 4-71
4.7.3.2
Datatype Conversions............................................................................................... 4-73
4.7.4
Run Time: After Stored Procedure Invocation ............................................................. 4-74
4.7.4.1
Datatype Conversions............................................................................................... 4-74
4.7.4.2
Null Values ................................................................................................................. 4-74
4.7.4.3
Function Return Values ............................................................................................ 4-74
4.7.5
Advanced Topics .............................................................................................................. 4-75
4.7.5.1
Support for REF CURSOR........................................................................................ 4-75
4.7.5.2
Support for PL/SQL Boolean, PL/SQL Record, and PL/SQL Table Types..... 4-75
4.7.5.3
Default Clauses in Wrapper Procedures................................................................ 4-78
4.8
Use Case for Creating and Configuring a Stored Procedure in JDeveloper BPEL Designer...
4-78
4.8.1
Creating a Stored Procedure ........................................................................................... 4-79
4.8.2
Creating a Database Connection .................................................................................... 4-79
4.8.3
Creating a Workspace and a Greeting Process............................................................. 4-80
4.8.4
Creating a Partner Link.................................................................................................... 4-81
4.8.5
Creating an Invoke Activity ............................................................................................ 4-85
4.8.6
Creating an Initial Assign Activity................................................................................. 4-86
4.8.7
Creating a Second Assign Activity................................................................................. 4-87
4.8.8
Validating, Compiling, and Deploying the Greeting Process.................................... 4-89
4.8.9
Running the Greeting Process......................................................................................... 4-89
4.9
Summary ................................................................................................................................... 4-91
vi
5
Oracle Application Server Adapter for Java Message Service
5.1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.8.1
5.3.9
5.4
6
Introduction to the JMS Adapter .............................................................................................. 5-1
JMS Adapter Features ................................................................................................................ 5-1
Use Cases for the JMS Adapter ................................................................................................. 5-2
Concepts................................................................................................................................ 5-2
Using the Adapter Configuration Wizard to Configure a JMS Adapter..................... 5-4
Generated WSDL File....................................................................................................... 5-10
oc4j-ra.xml file ................................................................................................................... 5-12
Produce Message Procedure ........................................................................................... 5-12
Configuring for OJMS ...................................................................................................... 5-13
Configuring for OC4J JMS............................................................................................... 5-15
Configuring for TIBCO JMS ............................................................................................ 5-16
Direct Connection...................................................................................................... 5-17
Configuring for IBM Websphere JMS............................................................................ 5-17
Summary ................................................................................................................................... 5-18
Native Format Builder Wizard
6.1
Creating Native Schema Files with the Native Format Builder Wizard............................. 6-1
6.1.1
Supported Formats .............................................................................................................. 6-2
6.1.1.1
Delimited (such as CSV files)...................................................................................... 6-2
6.1.1.2
Fixed Length (Positional) ............................................................................................ 6-2
6.1.1.3
DTD ................................................................................................................................ 6-2
6.1.1.4
COBOL Copybook........................................................................................................ 6-2
6.1.2
Native Format Builder Wizard Windows ........................................................................ 6-6
6.2
Understanding Native Schema ................................................................................................. 6-7
6.2.1
Use Cases for the Native Format Builder......................................................................... 6-7
6.2.1.1
Defining a Comma-Separated Value File Structure ................................................ 6-8
6.2.1.2
Defining a * Separated Value File Structure ............................................................. 6-9
6.2.1.3
Defining a Fixed Length Structure............................................................................. 6-9
6.2.1.4
Defining a More Complex Structure - Invoice ...................................................... 6-10
6.2.1.5
Using the Native Format Translator for removing or adding namespaces to XML
with no namespace 6-13
6.2.1.6
COBOL Copybook..................................................................................................... 6-14
6.2.2
Native Schema Constructs............................................................................................... 6-21
6.2.2.1
Defining Fixed Length Data..................................................................................... 6-22
6.2.2.2
Defining Terminated Data ....................................................................................... 6-24
6.2.2.3
Defining Surrounded Data....................................................................................... 6-26
6.2.2.4
Defining Lists ............................................................................................................. 6-27
6.2.2.5
Defining Arrays ......................................................................................................... 6-29
6.2.2.6
Conditional Processing ............................................................................................. 6-33
6.2.2.7
Defining Dates ........................................................................................................... 6-41
6.2.2.8
Using Variables .......................................................................................................... 6-41
6.3
Native Schema Constructs...................................................................................................... 6-43
6.4
Summary ................................................................................................................................... 6-45
vii
A
Troubleshooting and Workarounds
A.1
Troubleshooting the Oracle Application Server Adapter for Databases ........................... A-1
A.1.1
Could Not Create OracleAS TopLink Session Exception ............................................. A-1
A.1.2
Could Not Find Adapter for eis/DB/my_connection..................................................... A-1
A.1.3
Changes Through OracleAS TopLink Mapping Workbench....................................... A-2
A.1.4
Redeploying from the Command Line............................................................................ A-2
A.1.5
Cannot Change Customers_table.xsd.............................................................................. A-2
A.1.6
No Target Foreign Keys Error........................................................................................... A-2
A.1.7
No Primary Key Exception................................................................................................ A-3
A.1.8
dateTime Conversion Exceptions..................................................................................... A-4
A.1.9
Issues with Oracle DATE................................................................................................... A-5
A.1.10
TIMESTAMP Datatype Is Not Supported for a Microsoft SQL Server Database ..... A-6
A.1.11
Handling a Database Adapter Fault ................................................................................ A-6
A.1.12
Table Not Found: SQL Exception..................................................................................... A-7
A.1.13
Switching from a Development Database to a Production Database ......................... A-7
A.1.14
Only One Employee Per Department Appears.............................................................. A-8
A.1.15
Outbound SELECT on a CHAR(X) or NCHAR Column Returns No Rows.............. A-8
A.1.16
ORA-00932: Inconsistent Datatypes Exception Querying CLOBs............................... A-8
A.1.17
ORA-17157: 4K/32K Driver Limit with CLOBs and BLOBs ........................................ A-9
A.1.18
MERGE Sometimes Does UPDATE Instead of INSERT, or Vice Versa...................... A-9
A.1.19
Message Loss with the MERGE Invoke Operation...................................................... A-10
A.1.20
Integrity Violation Occurs with Delete or DeletePollingStrategy ............................. A-11
A.1.21
Some Queried Rows Appear Twice or Not at All in the Query Result .................... A-12
A.1.22
Importing a Same-Named Table, with Same Schema Name, but Different Databases ....
A-12
A.1.23
Problems Creating a Relationship Manually for a Composite Primary Key .......... A-13
A.1.24
Must Fully Specify Relationships Involving Composite Primary Keys ................... A-13
A.1.25
Database Adapter Throws an Exception When Using a BFILE................................. A-13
A.1.26
During Design-Time, Wizard Does Not Allow Deletion of a Table ......................... A-13
A.1.27
Changes to JDeveloper Project Are Made Even If Wizard Is Cancelled .................. A-13
A.1.28
Problems Removing a Relationship, Then Adding a New Relationship with the Same
Name A-13
A.1.29
Problems Importing Third-Party Database Tables ...................................................... A-14
A.1.30
Problems Importing Object Tables................................................................................. A-15
A.1.31
Relationships Not Autogenerated When Tables Are Imported Separately............. A-15
A.1.32
Primary Key Is Not Saved ............................................................................................... A-15
A.1.33
Table Column Name Is a Java Keyword ....................................................................... A-16
A.1.34
Catching a Database Exception....................................................................................... A-17
A.1.35
Connection Settings Error: Too Many Transactions.................................................... A-17
A.1.36
ORA-01747: invalid user.table.column, table.column, or column specification, When
Using SELECT FOR UPDATE A-18
A.2
Troubleshooting the Oracle Application Server Adapter for Databases When Using Stored
Procedures A-18
A.2.1
Design Time: Unsupported or Undefined Parameter Types ..................................... A-18
A.2.2
Design Time: Referencing User-Defined Types in Other Schemas ........................... A-19
A.2.3
Run Time: Parameter Mismatches ................................................................................. A-20
A.2.4
Run Time: Stored Procedure Not Defined in the Database........................................ A-20
A.3
Troubleshooting the Oracle Application Server Adapter for Files/FTP ......................... A-21
viii
A.3.1
Changing Logical Names with the Adapter Configuration Wizard......................... A-21
A.3.2
Creating File Names with Spaces with the Native Format Builder Wizard ............ A-22
A.3.3
Common User Errors ....................................................................................................... A-22
A.4
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing ........ A-23
A.4.1
Inbound Errors .................................................................................................................. A-24
A.4.1.1
JNDI Lookup Failed .................................................................................................. A-24
A.4.1.2
During Initialization, I/O Exception: Network Adapter Did Not Establish the
Connection A-24
A.4.1.3
Incorrect Username/Password ............................................................................... A-25
A.4.1.4
Queue Not Found...................................................................................................... A-25
A.4.1.5
User Does Not Have DBMS_AQIN Privileges, Which Are Required by the AQ
Java API A-25
A.4.1.6
Translation Error ....................................................................................................... A-26
A.4.1.7
Subscriber Already Exists When Using MessageRuleSelector ........................... A-26
A.4.2
Outbound Errors............................................................................................................... A-27
A.4.2.1
JNDI Lookup Failed .................................................................................................. A-27
A.4.2.2
I/O Exception: Network Adapter Could Not Establish the Connection .......... A-28
A.4.2.3
Queue Not Found...................................................................................................... A-28
A.4.2.4
Incorrect Username/Password ............................................................................... A-28
A.4.2.5
User Does Not Have DBMS_AQIN Privileges, Which Are Required by the AQ
Java API A-29
A.4.2.6
Translation Error ....................................................................................................... A-29
A.4.3
JDeveloper BPEL Designer Errors.................................................................................. A-30
A.4.4
Translation Error............................................................................................................... A-31
A.4.5
Other Problems ................................................................................................................. A-32
A.5
Troubleshooting the Oracle Application Server Adapter for Java Message Service (JMS) .....
A-34
A.6
Summary ................................................................................................................................... A-35
Index
ix
x
Preface
This guide describes how to use the technology adapters that are provided with Oracle
BPEL Process Manager.
This preface contains the following topics:
■
Audience
■
Documentation Accessibility
■
Related Documents
■
Conventions
Audience
Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging
User’s Guide is intended for anyone who is interested in using these adapters.
Documentation Accessibility
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xi
TTY Access to Oracle Support Services
Oracle provides dedicated Text Telephone (TTY) access to Oracle Support Services
within the United States of America 24 hours a day, seven days a week. For TTY
support, call 800.446.2398.
Related Documents
For more information, see the following documents in the Oracle Other Product One
Release 7.0 documentation set or in the Oracle Other Product Two Release 6.1
documentation set:
■
Oracle Other Product One Release Notes
■
Oracle Other Product One Configuration Guide
■
Oracle Other Product Two Getting Started Guide
■
Oracle Other Product Two Reference Guide
■
Oracle Other Product Two Tuning and Performance Guide
Conventions
The following text conventions are used in this document:
xii
Convention
Meaning
boldface
Boldface type indicates graphical user interface elements associated
with an action, or terms defined in text or the glossary.
italic
Italic type indicates book titles, emphasis, or placeholder variables for
which you supply particular values.
monospace
Monospace type indicates commands within a paragraph, URLs, code
in examples, text that appears on the screen, or text that you enter.
1
Introduction to Oracle Adapters for Files,
FTP, Databases, and Enterprise Messaging
This chapter describes the file, FTP, database, and enterprise messaging adapters that
are provided with Oracle BPEL Process Manager. The adapters enable you to integrate
BPEL processes with access to file systems, FTP servers, database tables, database
queues (advanced queues, or AQ), Java Message Services (JMS), and Oracle
Applications. See Oracle BPEL Process Manager Developer’s Guide for information about
BPEL processes.
This chapter contains the following topics:
■
Section 1.1, &quot;Overview of Oracle BPEL Process Manager Technology Adapters&quot;
■
Section 1.2, &quot;Summary&quot;
See Oracle Application Server Adapter Concepts for information about application and
mainframe adapters.
1.1 Overview of Oracle BPEL Process Manager Technology Adapters
From the Partner Link Window, shown in Figure 1–1, you can access the adapters that
are provided with Oracle BPEL Process Manager.
Figure 1–1 Partner Link Window
Click the Define Adapter Service icon, shown in Figure 1–2, to access the Adapter
Configuration Wizard.
Introduction to Oracle Adapters for Files, FTP, Databases, and Enterprise Messaging 1-1
Overview of Oracle BPEL Process Manager Technology Adapters
Figure 1–2 Defining an Adapter
This wizard enables you to configure the types of adapters shown in Figure 1–3 for use
with BPEL processes.
Figure 1–3 Adapter Types
When you select an adapter type, the Service Name window shown in Figure 1–4
prompts you to enter a name. For this example, File Adapter was selected in
Figure 1–3. When the wizard completes, a WSDL file by this service name appears in
the Applications Navigator for the BPEL process (for this example, named
ReadFile.wsdl). This file includes the adapter configuration settings you specify with
this wizard. Other configuration files (such as header files and files specific to the
adapter) are also created and display in the Applications Navigator.
See Oracle Application Server Adapter for Oracle Applications User’s Guide for information
on using the Oracle Applications adapter listed in Figure 1–3.
1-2 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Summary
Figure 1–4 Adapter Service Name
The Adapter Configuration Wizard windows that appear after the Service Name
window are based on the adapter type you selected. These configuration windows and
the information you must provide are described in later chapters of this guide.
1.2 Summary
This chapter introduces the file, FTP, database, and enterprise messaging adapters that
are provided with Oracle BPEL Process Manager. The adapters enable you to integrate
BPEL processes with access to file systems, FTP servers, database tables, database
queues, Java Message Services (JMS), and Oracle Applications.
Introduction to Oracle Adapters for Files, FTP, Databases, and Enterprise Messaging 1-3
Summary
1-4 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
2
Oracle Application Server Adapter for
Files/FTP
This chapter describes how to use the Oracle Application Server Adapter for Files/FTP
(file and FTP adapters), which work in conjunction with Oracle BPEL Process Manager
as an external service. References to use cases for the file and FTP adapters are also
provided.
This chapter contains the following topics:
■
Section 2.1, &quot;Introduction to the File and FTP Adapters&quot;
■
Section 2.2, &quot;File and FTP Adapter Concepts&quot;
■
Section 2.3, &quot;Using Secure FTP with the FTP Adapter&quot;
■
Section 2.4, &quot;Use Cases for the File and FTP Adapters&quot;
■
Section 2.5, &quot;Summary&quot;
The term Oracle Application Server Adapter for Files/FTP is used
for the file and FTP adapters, which are separate adapters with very
similar functionality.
Note:
2.1 Introduction to the File and FTP Adapters
Oracle BPEL Process Manager includes the file and FTP adapters. The file and FTP
adapters enable your BPEL process to exchange (read and write) files on local file
systems and remote file systems (through use of the file transfer protocol (FTP)). The
file contents can be both XML and non-XML data formats.
This section contains the following topics:
■
File and FTP Adapter Features
■
File and FTP Adapter Architecture
■
File and FTP Adapter Integration with Oracle BPEL Process Manager
2.1.1 File and FTP Adapter Features
The file and FTP adapters enable you to configure your BPEL process to interact with
local and remote file system directories. The file and FTP adapters can read and write
the following file formats and use the adapter translator component at both design
time and run time:
■
XML (both XSD- and DTD-based)
Oracle Application Server Adapter for Files/FTP
2-1
Introduction to the File and FTP Adapters
■
Delimited
■
Fixed positional
■
Binary data
■
COBOL Copybook data
The file and FTP adapters can also treat file contents as an opaque object and pass the
contents in their original format (without performing translation). The opaque option
handles binary data such as JPGs and GIFs whose structure cannot be captured in an
XSD or data you do not want to have translated.
The translator enables the file and FTP adapters to convert native data in various
formats to XML, and vice versa. The native data can be simple (just a flat structure) or
complex (with parent-child relationships).
The FTP adapter supports Solaris and Windows FTP servers. The FTP adapter also
supports the use of secure FTP on Solaris.
The file and FTP adapters exchange files in the inbound and outbound directions.
Based on the direction, the file and FTP adapters perform a different set of tasks.
For inbound files sent to Oracle BPEL Process Manager, the file and FTP adapters
perform the following operations:
■
■
■
Poll the file system looking for matches
Read and translate the file contents based on the translation logic defined at
design time
Publish the same as an XML message
This functionality of the file and FTP adapters is referred to as the file read operation
and the component that provides this function as the file reader. This operation is
known as a Java Connector Architecture (JCA) inbound interaction.
For outbound files sent from Oracle BPEL Process Manager, the file and FTP adapters
perform the following operations:
■
Receive messages from BPEL
■
Format the XML contents as specified at design time
■
Produce output files
This functionality of the file and FTP adapters is referred to as the file write operation
and the component that provides this functionality as the file writer. This operation is
known as a JCA outbound interaction.
For the inbound and outbound directions, the file and FTP adapters use a set of
configuration parameters. For example:
■
■
The inbound file and FTP adapters have parameters for the inbound directory
where the input file appears and the frequency with which to poll the directory.
The outbound file and FTP adapters have parameters for the outbound directory
in which to write the file and the file naming convention to use.
The file reader supports polling conventions and offers several postprocessing options.
After processing the file, the files can be deleted, moved to a directory, or left as is. The
file reader can split the contents of a file and publish it in batches, instead of as a single
message. This feature can be utilized for performance tuning of the file and FTP
adapters. The file reader guarantees once and once-only delivery.
2-2 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Introduction to the File and FTP Adapters
When a file contains multiple messages, you can select to publish messages in a
specific number of batches. This is referred to as debatching. During debatching, the
file reader, upon restart, proceeds from where it left off in the previous run, thereby
avoiding duplicate messages.
The file writer offers several conditions for output file creation. The output files can be
created based on time elapsed, file size, and number of messages received.
See the following sections for details about the read and write functionality of the file
and FTP adapters:
■
Section 2.2.1, &quot;File Adapter Read File Concepts&quot;
■
Section 2.2.2, &quot;File Adapter Write File Concepts&quot;
■
Section 2.2.3, &quot;FTP Adapter for Get File Concepts&quot;
■
Section 2.2.4, &quot;FTP Adapter for Put File Concepts&quot;
2.1.2 File and FTP Adapter Architecture
The file and FTP adapters are based on JCA 1.5 architecture. JCA provides a standard
architecture for integrating heterogeneous enterprise information systems (EIS). The
adapter framework of the file and FTP adapters exposes the underlying JCA
interactions as services (WSDL with JCA binding) for Oracle BPEL Process Manager
integration. See Oracle Application Server Adapter Concepts Guide for details about
OracleAS Adapter architecture.
2.1.3 File and FTP Adapter Integration with Oracle BPEL Process Manager
The file and FTP adapters are automatically integrated with Oracle BPEL Process
Manager. When you create a partner link in JDeveloper BPEL Designer, you can
invoke the Adapter Configuration Wizard, as shown in Figure 1–2.
This wizard enables you to select and configure the file and FTP adapters or other
OracleAS Adapters, as shown in Figure 1–3. The Adapter Configuration Wizard then
prompts you to enter a service name, as shown in Figure 1–4. When configuration is
complete, a WSDL file of the same name is created in the Applications Navigator
section of JDeveloper BPEL Designer. This WSDL file contains the configuration
information you specify with the Adapter Configuration Wizard.
After specifying a service name (as shown in Figure 1–4), you are prompted to select
an operation to perform. Based on your selection, different Adapter Configuration
Wizard windows appear and prompt you for configuration information. Table 2–1 lists
the available operations and provides references to sections that describe the
configuration information you must provide.
Table 2–1
Supported Operations
Operation
See Section...
File Adapter
-
■
Read File (inbound operation)
Section 2.2.1, &quot;File Adapter Read File Concepts&quot;
■
Write File (outbound operation)
Section 2.2.2, &quot;File Adapter Write File Concepts&quot;
FTP Adapter
-
■
Get File (inbound operation)
Section 2.2.3, &quot;FTP Adapter for Get File Concepts&quot;
■
Put File (outbound operation)
Section 2.2.4, &quot;FTP Adapter for Put File Concepts&quot;
Oracle Application Server Adapter for Files/FTP
2-3
File and FTP Adapter Concepts
See Oracle Application Server Adapter Concepts Guide for more information about
OracleAS Adapter integration with Oracle BPEL Process Manager.
2.2 File and FTP Adapter Concepts
This section contains the following topics:
■
File Adapter Read File Concepts
■
File Adapter Write File Concepts
■
FTP Adapter for Get File Concepts
■
FTP Adapter for Put File Concepts
2.2.1 File Adapter Read File Concepts
In the inbound direction, the file adapter polls and reads files from a file system for
processing. This section provides an overview of the inbound file reading capabilities
of the file adapter. You use the Adapter Configuration Wizard to configure the file
adapter for use with your BPEL process. This creates an inbound WSDL file named
after the service name you specify with the Adapter Configuration Wizard. An
inbound header file named fileAdapterInboundheader.wsdl is also created.
This section contains the following topics:
■
Inbound Operation
■
Inbound File Directory Specifications
■
File Matching and Batch Processing
■
File Polling
■
File Processing
■
Postprocessing
■
Native Data Translation
■
Error Handling
■
Guaranteed Delivery and Recovery from Server Failures
■
Inbound Service Name WSDL File
■
Inbound Header WSDL File
■
Synchronous File Reading Capabilities
2.2.1.1 Inbound Operation
For inbound operations with the file adapter, you select to perform an inbound Read
File operation. Figure 2–1 shows this selection.
2-4 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
File and FTP Adapter Concepts
Figure 2–1 Selecting the Read File Operation
2.2.1.2 Inbound File Directory Specifications
The File Directories window of the Adapter Configuration Wizard shown in
Figure 2–2 enables you to specify information about the directory to use for reading
inbound files and the directories in which to place successfully processed files.
Figure 2–2 Adapter Configuration Wizard—Specifying Incoming Files
The following sections describe the file directory information to specify:
■
Specifying Inbound Physical or Logical Directory Paths
■
Archiving Successfully Processed Files
Specifying Inbound Physical or Logical Directory Paths
You can specify inbound directory names as physical or logical paths. Physical paths
are values such as c:\inputDir.
Logical properties are specified in the inbound WSDL file and their logical-physical
mapping is resolved using partner link properties. You specify the logical parameters
once at design time, and you can later modify the physical directory name as needed.
Oracle Application Server Adapter for Files/FTP
2-5
File and FTP Adapter Concepts
Provide a logical name. For example, the generated inbound WSDL file looks as
follows for the logical input directory name InputFileDir.
&lt;operation name=&quot;Read&quot;&gt;
&lt;jca:operation
LogicalDirectory=&quot;InputFileDir&quot;
ActivationSpec=&quot;oracle.tip.adapter.file.inbound.FileActivationSpec&quot;
IncludeFiles=&quot;.*&quot;
PollingFrequency=&quot;5&quot;
MinimumAge=&quot;0&quot;
DeleteFile=&quot;true&quot;
OpaqueSchema=&quot;true&quot; &gt;
&lt;/jca:operation&gt;
In the BPEL partner link of the bpel.xml file, you then provide the physical
parameter values (in this case, the directory path) of the corresponding logical
ActivationSpec or InteractionSpec. This resolves the mapping between the
logical directory name and actual physical directory name.
&lt;?xml version = '1.0' encoding = 'UTF-8'?&gt;
&lt;BPELSuitcase&gt;
&lt;BPELProcess id=&quot;ComplexStructure&quot; src=&quot;ComplexStructure.bpel&quot;&gt;
&lt;partnerLinkBindings&gt;
&lt;partnerLinkBinding name=&quot;InboundPL&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;ComplexStructureInbound.wsdl&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
&lt;partnerLinkBinding name=&quot;OutboundPL&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;ComplexStructureOutbound.wsdl&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
&lt;/partnerLinkBindings&gt;
&lt;activationAgents&gt;
&lt;activationAgentclassName=
&quot;oracle.tip.adapter.fw.agent.jca.JCAActivationAgent&quot;partnerLink=&quot;InboundPL&quot;&gt;
&lt;property name=&quot;InputFileDir&quot;&gt;C:/ora_home/integration/bpm/samples/tutorials/
121.FileAdapter/ComplexStructure/InputDir/&lt;/property&gt;
&lt;property name=&quot;portType&quot;&gt;Read_ptt&lt;/property&gt;
&lt;/activationAgent&gt;
&lt;/activationAgents&gt;
/BPELProcess&gt;
&lt;/BPELSuitcase&gt;
Multiple BPEL processes or multiple file adapters polling one
inbound directory are not supported. Ensure that all are polling their
own unique directory.
Note:
Archiving Successfully Processed Files
This option enables you to specify a directory in which to place successfully processed
files. You can also specify the archive directory as a logical name. In this case, you
must follow the logical-to-physical mappings described in &quot;Specifying Inbound
Physical or Logical Directory Paths&quot;.
2-6 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
File and FTP Adapter Concepts
Files greater than or equal to 7 MB cannot be delivered. As an
alternative, you can debatch large files (if they have multiple
messages), and publish these files in messages of sizes less than 7 MB.
This alternative option is applicable only to structured files
(comma-delimited or fixed position), which contain more than one
message. It is not applicable to binary or XML files.
Note:
2.2.1.3 File Matching and Batch Processing
The File Filtering window of the Adapter Configuration Wizard shown in Figure 2–3
enables you to specify details about the files to retrieve or ignore.
The file adapter acts as a file listener in the inbound direction. The file adapter polls
the specified directory on a local or remote file system and looks for files that match a
specified naming criteria.
Figure 2–3 Adapter Configuration Wizard—File Filtering
The following sections describe the file filtering information for:
■
Specifying a Naming Pattern
■
Including and Excluding Files
■
Batching Multiple Inbound Messages
Specifying a Naming Pattern
Specify the naming convention that the file adapter uses to poll for inbound files. You
can also specify the naming convention for files you do not want to process. Two
naming conventions are available for selection. The file adapter matches the files that
appear in the inbound directory.
■
File wildcards (po*.txt)
Retrieves all files that start with po and end with .txt. This convention conforms
to Windows operating system standards.
■
Regular expressions (po.*\.txt)
Retrieves all files that start with po and end with .txt. This convention conforms
to Java Development Kit (JDK) regular expression (regex) constructs.
Oracle Application Server Adapter for Files/FTP
2-7
File and FTP Adapter Concepts
Notes:
■
■
■
If you later select a different naming pattern, ensure that you also
change the naming conventions you specify in the Include Files
and Exclude Files fields. The Adapter Configuration Wizard does
not automatically make this change for you.
Do not specify *.* as the convention for retrieving files.
Be aware of any file length restrictions imposed by your operating
system. For example, Windows operating system file names
cannot be more than 256 characters in length (the filename, plus
the complete directory path). Some operating systems also have
restrictions on the use of specific characters in file names. For
example, Windows operating systems do not allow characters like
\, /, :, *, &lt;, &gt;, or |.
Including and Excluding Files
If you use regular expressions, the values you specify in the Include Files and Exclude
Files fields must conform to JDK regular expression (regex) constructs. For both fields,
different regex patterns must be provided separately. The Include Files and Exclude
Files fields correspond to the IncludeFiles and ExcludeFiles parameters,
respectively, of the inbound WSDL file.
The regex pattern complies with the JDK regex pattern.
According to the JDK regex pattern, the correct connotation for a
pattern of any characters with any number of occurrences is a period
followed by a plus sign (.+). An asterisk (*) in a JDK regex is not a
placeholder for a string of any characters with any number of
occurrences.
Note:
If you want the inbound file adapter to pick up all file names that start with po and
which have the extension txt, you must specify the Include Files field as po.*\.txt
when the name pattern is a regular expression. In this regex pattern example:
■
A period (.) indicates any character
■
An asterisk (*) indicates any number of occurrences
■
A backslash followed by a period (\.) indicates the character period (.), as
indicated with the backslash escape character
The Exclude Files field is constructed similarly.
If you have Include Files field and Exclude Files field expressions that have an
overlap, the exclude files expression takes precedence. For example, if Include Files is
set to abc*.txt and Exclude Files is set to abcd*.txt, you receive any files prefixed with
abcd*.
Table 2–2 lists details of Java regex constructs.
Do not begin JDK regex pattern names with the following
characters: +, ?, or *.
Note:
2-8 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
File and FTP Adapter Concepts
Table 2–2
Java Regular Expression Constructs
Matches
Construct
Characters
-
The character x
x
The backslash character
\\
The character with octal value 0n (0 &lt;= n &lt;= 7)
\0n
The character with octal value 0nn (0 &lt;= n &lt;= 7)
\0nn
The character with octal value 0mnn (0 &lt;= m &lt;= 3, 0
&lt;= n &lt;= 7)
\0mnn
The character with hexadecimal value 0xhh
\xhh
The character with hexadecimal value 0xhhhh
\uhhhh
The tab character ('\u0009')
\t
The newline (line feed) character ('\u000A')
\n
The carriage-return character ('\u000D')
\r
The form-feed character ('\u000C')
\f
The alert (bell) character ('\u0007')
\a
The escape character ('\u001B')
\e
The control character corresponding to x
\cx
-
-
Character classes
-
a, b, or c (simple class)
[abc]
Any character except a, b, or c (negation)
[^abc]
a through z or A through Z, inclusive (range)
[a-zA-Z]
a through d, or m through p: [a-dm-p] (union)
[a-d[m-p]]
d, e, or f (intersection)
[a-z&amp;&amp;[def]]
a through z, except for b and c: [ad-z] (subtraction)
[a-z&amp;&amp;[^bc]]
a through z, and not m through p: [a-lq-z](subtraction)
[a-z&amp;&amp;[^m-p]]
-
-
Predefined character classes
-
Any character (may or may not match line terminators)
-
A digit: [0-9]
\d
A nondigit: [^0-9]
\D
A whitespace character: [ \t\n\x0B\f\r]
\s
A nonwhitespace character: [^\s]
\S
A word character: [a-zA-Z_0-9]
\w
A nonword character: [^\w]
\W
Greedy quantifiers
-
X, once or not at all
X?
X, zero or more times
X*
Oracle Application Server Adapter for Files/FTP
2-9
File and FTP Adapter Concepts
Table 2–2 (Cont.) Java Regular Expression Constructs
Matches
Construct
X, one or more times
X+
X, exactly n times
X{n}
X, at least n times
X{n,}
X, at least n, but not more than m times
X{n,m}
For details about Java regex constructs, go to
http://java.sun.com/j2se/1.4.2/docs/api
Batching Multiple Inbound Messages
You can select if incoming files have more than one message, and specify the number
of messages in one batch file to publish. When a file contains multiple messages and
this check box is selected, this is referred to as debatching. Nondebatching is when the
file contains only a single message and the check box is not selected.
2.2.1.4 File Polling
The File Polling window of the Adapter Configuration Wizard shown in Figure 2–4
enables you to specify the following inbound polling parameters:
■
■
■
The frequency with which to poll the inbound directory for new files to retrieve.
The minimum file age of files to retrieve. For example, this enables a large file to
be completely copied into the directory before it is retrieved for processing. The
age is determined by the last modified time stamp. For example, if you know that
it takes three to four minutes for a file to be written, set the minimum age of
pollable files to five minutes. If a file is detected in the input directory and its
modification time is less than 5 minutes older than the current time, the file is not
retrieved because it is still potentially being written to.
Whether or not to delete files after a successful retrieval. If this check box is not
selected, processed files remain in the inbound directory, but are ignored. Only
files with modification dates more recent than the last processed file are retrieved.
If you place another file in the inbound directory with the same name as a file that
has already been processed, but the modification date remains the same, that file is
not retrieved.
2-10 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
File and FTP Adapter Concepts
Figure 2–4 Adapter Configuration Wizard—File Polling
2.2.1.5 File Processing
The file adapter prepares the files for processing and delivers them to the adapter
translator for translation and debatching (if necessary).
If you have many inbound files to process or very large files of more than 1 MB, you
may need to increase the config timeout value in the Oracle_
Home\integration\orabpel\system\appserver\oc4j\j2ee\home\server.
xml file:
&lt;transaction-config timeout=&quot;30000&quot;/&gt;
2.2.1.6 Postprocessing
The file adapter supports several postprocessing options. After processing the file, the
files can be deleted if specified in the File Polling window shown in Figure 2–4. Files
can also be moved to a completion (archive) directory if specified in the File
Directories window shown in Figure 2–2.
2.2.1.7 Native Data Translation
The next Adapter Configuration Wizard window that appears is the Messages
window shown in Figure 2–5. This window enables you to select the XSD schema file
for translation.
Oracle Application Server Adapter for Files/FTP 2-11
File and FTP Adapter Concepts
Figure 2–5 Specifying the Schema
If native format translation is not required (for example, a JPG or GIF image is being
processed) select the Native format translation is not required check box. The file is
passed through in base-64 encoding.
XSD files are required for translation. If you want to define a new schema or convert
an existing data type description (DTD) or COBOL Copybook, select Define Schema
for Native Format. This starts the Native Format Builder Wizard. This wizard guides
you through the creation of a native schema file from file formats such as
comma-separated value (CSV), fixed-length, DTD, and COBOL Copybook. After the
native schema file is created, you are returned to this Messages window with the
Schema File URL and Schema Element fields filled in. See Section 6.1, &quot;Creating
Native Schema Files with the Native Format Builder Wizard&quot; for more information.
Ensure that the schema you specify includes a namespace. If
your schema does not have a namespace, an error message appears.
Note:
2.2.1.8 Error Handling
The file adapter provides several inbound error handling capabilities:
■
rejectedMessageHandlers Property
■
fatalErrorFailoverProcess Property
■
uniqueMessageSeparator Property
■
Default Error Directory
rejectedMessageHandlers Property
You can configure your BPEL process to process the correct records of a file and write
only the rejected records to an archive directory by setting the
rejectedMessageHandlers property. For example, assume that you have a file
with four records. If three records are processed successfully and one record is not, the
file is processed with the three correct records. The record that errored is written to a
rejected messages directory. The behavior of the rejectedMessageHandlers
property in case a file has only one message is to reject the entire message.
2-12 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
File and FTP Adapter Concepts
You first define the rejectedMessageHandlers property as an activationAgent
property in the bpel.xml file so that it applies to inbound WSDL operations only:
&lt;BPELSuitcase&gt;
&lt;BPELProcess src=&quot;ErrorTest.bpel&quot; id=&quot;ErrorTest&quot;&gt;
&lt;activationAgents&gt;
&lt;activationAgent
className=&quot;oracle.tip.adapter.fw.agent.jca.JCAActivationAgent&quot;
partnerLink=&quot;inboundPL&quot;&gt;
&lt;property name=&quot;rejectedMessageHandlers&quot;&gt;
file://C:/orabpel/samples/test/errorTest/rejectedMessages
&lt;/property&gt;
This causes messages that error to be written to the configured directory using the
following naming pattern:
INVALID_MSG_ + process-name + operation-name + current-time
fatalErrorFailoverProcess Property
If the file adapter (or any OracleAS Adapter) encounters an unrecoverable system
error (such as no more memory or a full disk), it can instruct the adapter framework to
shut down the BPEL process.
You can optionally configure a standby (or failover) BPEL process to be invoked when
the adapter initiates the shutdown request of the (main) BPEL process.
You configure this failover BPEL process by setting the
fatalErrorFailoverProcess property as an activationAgent property in the
bpel.xml file.
&lt;property name=&quot;fatalErrorFailoverProcess&quot;&gt;
bpel://bpel-domain:password|process-name|operation-name|
input-message-part-name
&lt;/property&gt;
where password (which can be omitted if it is bpel) can be encrypted.
For example:
&lt;property name=&quot;fatalErrorFailoverProcess&quot;&gt;
bpel://default|JCA-FatalErrorHandler|handleError|message
&lt;/property&gt;
or
&lt;property name=&quot;fatalErrorFailoverProcess&quot;&gt;
bpel://default:C23487CFA591952D3ED0B81F0961F65A|JCA-FatalErrorHandler|handleError|
message&lt;/property&gt;
where the bpel password was specified in encrypted form (using the encrypt.bat
(for Windows) or encrypt.sh (for UNIX) command line utility).
The fatal error BPEL process must use a specific input (WSDL) message type. This
message type is defined in the system-provided WSDL file
FatalErrorMessageWSDL.wsdl. This WSDL can be referenced (imported) using
the following:
&lt;import namespace=&quot;http://xmlns.oracle.com/pcbpel/fatalErrorHandler&quot;
location=&quot;http://localhost:9700/orabpel/xmllib/jca/FatalErrorMessage.wsdl&quot;/&gt;
Oracle Application Server Adapter for Files/FTP 2-13
File and FTP Adapter Concepts
The XML schema type for this message is as follows:
&lt;complexType name=&quot;FatalErrorMessageType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Reason&quot; type=&quot;string&quot;/&gt;
&lt;element name=&quot;Exception&quot; type=&quot;string&quot;/&gt;
&lt;element name=&quot;StackTrace&quot; type=&quot;string&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
The purpose of the failover BPEL process can be to undertake error compensating
actions, alert someone through e-mail or short message service (SMS), or restart some
other process.
uniqueMessageSeparator Property
In the case of debatching (multiple messages in a single file), the typical behavior is to
reject the messages from the first bad message to the end of the file. If each message
has a unique separator and that separator is not part of any data, then rejection can be
more fine-grained. In these cases, you can define a uniqueMessageSeparator in the
schema element of the native schema to have the value of this unique message
separator. This property controls how the adapter translator works when parsing
through multiple records in one file (debatching). This property enables recovery even
when detecting bad messages inside a large batch file; when a bad record is detected,
the adapter translator skips to the next unique message separator boundary and
continues from there. If you do not set this property, all records that follow the record
that errored are also rejected.
The following schema file provides an example of using uniqueMessageSeparator.
&lt;?xml version=&quot;1.0&quot; ?&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://TargetNamespace.com/Reader&quot;
xmlns:tns=&quot;http://TargetNamespace.com/Reader&quot;
elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;
nxsd:encoding=&quot;US-ASCII&quot; nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot; nxsd:uniqueMessageSeparator=&quot;${eol}&quot;&gt;
&lt;xsd:element name=&quot;emp-listing&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element name=&quot;emp&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element name=&quot;GUID&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy=&quot;&amp;quot;&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Designation&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;,&quot;
nxsd:quotedBy=&quot;&amp;quot;&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Car&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy=&quot;&amp;quot;&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Labtop&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;,&quot;
nxsd:quotedBy=&quot;&amp;quot;&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Location&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;,&quot;
nxsd:quotedBy=&quot;&amp;quot;&quot;&gt;
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&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
&lt;!--NXSDWIZ:D:\work\jDevProjects\Temp_BPEL_process\Sample2\note.txt:--&gt;
&lt;!--USE-HEADER:false:--&gt;
Default Error Directory
If you do not set the rejectedMessageHandlers property, records that error during
translation are placed by default in
Oracle_Home\integration\orabpel\domains\domain_name\archive\jca\default_directory
2.2.1.9 Guaranteed Delivery and Recovery from Server Failures
The file adapter guarantees once-only delivery of inbound files. This includes
guaranteed delivery of large files through FTP. If your system goes down, the read
functionality of the file adapter upon restart avoids creating duplicate messages.
If your system server crashes while inbound messages are being processed, you must
manually perform recovery when the server restarts to ensure that all message records
are recovered. For example, a file has ten messages and the server crashes after three
messages have been processed. This causes the fourth message to go undelivered.
When the server restarts and begins processing with message five (the offset of the last
successfully rejected message), you must manually recover message four to ensure
that all messages are preserved.
Perform the following procedures to recover the rejected message record.
1.
Log in to Oracle BPEL Console.
2.
Select the BPEL Processes tab.
3.
Click Perform Manual Recovery under the Related Tasks section.
4.
Click Recover.
2.2.1.10 Inbound Service Name WSDL File
When you finish configuring the file adapter, a WSDL file is generated for the inbound
direction. The file is named after the service name you specified on the Service Name
window of the Adapter Configuration Wizard shown in Figure 1–4. You can rerun the
wizard at any time to change your operation definitions.
The ActivationSpec parameter holds the inbound configuration information. The
ActivationSpec and a set of inbound file adapter properties are part of the inbound
WSDL file.
The inbound WSDL contains the following information:
&lt;pc:inbound_binding /&gt;
&lt;operation name=&quot;Read&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.file.inbound.FileActivationSpec&quot;
PhysicalDirectory=&quot;C:/ora_
home/integration/bpm/samples/tutorials/121.FileAdapter/ComplexStructure/inputDir/&quot;
PhysicalArchiveDirectory=&quot;C:/ora_
home/integration/bpm/samples/tutorials/121.FileAdapter/ComplexStructure/archiveDir
Oracle Application Server Adapter for Files/FTP 2-15
File and FTP Adapter Concepts
/&quot;
IncludeFiles=&quot;.+\.txt&quot;
PollingFrequency=&quot;5&quot;
MinimumAge=&quot;0&quot;
DeleteFile=&quot;true&quot;
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;hdr:InboundHeader_msg&quot; part=&quot;inboundHeader&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
&lt;/binding&gt;
The ActivationSpec parameters are specified in the Adapter Configuration Wizard
during design time and appear in the binding element of the inbound WSDL. The
inbound file adapter uses the following configuration parameters:
■
PollingFrequency
This parameter specifies how often to poll a given input directory for new files.
The parameter is of type int and is mandatory. The default value is 1 minute.
■
PhysicalDirectory
This parameter specifies the physical input directory to be polled. The parameter
is of type String. The inbound directory where the files appear is mandatory.
You must specify the physical directory or logical directory.
■
LogicalDirectory
This parameter specifies the logical input directory to be polled. The parameter is
of type String.
■
PublishSize
This parameter indicates if the file contains multiple messages, and how many
messages to publish to the BPEL process at a time. The parameter is of type int
and is not mandatory. The default value is 1.
■
PhysicalArchiveDirectory
This parameter specifies where to archive successfully processed files. The
parameter is of type String and is not mandatory.
■
LogicalArchiveDirectory
This parameter specifies the logical directory in which to archive successfully
processed files. The parameter is of type String and is not mandatory.
■
IncludeFiles
This parameter specifies the pattern for types of files to pick up during polling.
The parameter is of type String and is not mandatory.
■
ExcludeFiles
This parameter specifies the pattern for types of files to be excluded during
polling. The parameter is of type String and is not mandatory.
2.2.1.11 Inbound Header WSDL File
The WSDL file shown in Section 2.2.1.10, &quot;Inbound Service Name WSDL File&quot; includes
two attributes that indicate which message and part define the operation headers:
&lt;jca:header message=&quot;hdr:InboundHeader_msg&quot; part=&quot;inboundHeader&quot;/&gt;
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The fileAdapterInboundHeader.wsdl file defines these attributes. This file also
provides information such as the name of the file being processed and its directory
path. This file is created along with the service name WSDL file, and displays in the
Applications Navigator of JDeveloper BPEL Designer.
&lt;definitions
name=&quot;fileAdapter&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot; &gt;
&lt;types&gt;
&lt;schema attributeFormDefault=&quot;qualified&quot; elementFormDefault=&quot;qualified&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:FILEAPP=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;&gt;
&lt;element name=&quot;InboundFileHeaderType&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;fileName&quot; type=&quot;string&quot;/&gt;
&lt;element name=&quot;directory&quot; type=&quot;string&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;!-- Header Message --&gt;
&lt;message name=&quot;InboundHeader_msg&quot;&gt;
&lt;part element=&quot;tns:InboundFileHeaderType&quot; name=&quot;inboundHeader&quot;/&gt;
&lt;/message&gt;
&lt;/definitions&gt;
See the online Help that is included with the Adapter tab in JDeveloper BPEL
Designer for more information.
2.2.1.12 Synchronous File Reading Capabilities
The file adapter can synchronously read a file using an invoke activity. If the specified
file does not exist, the read invoke activity returns nothing. You must manually edit
the WSDL file to enable this functionality.
1.
Create a WSDL file for the write file operation using the Adapter Configuration
Wizard.
2.
Select the schema of the file to be read in the Adapter Configuration Wizard
Messages window.
3.
Change the value of the parameters in the &lt;jca:operation&gt; element section
of the created WSDL file to:
InteractionSpec = oracle.tip.adapter.file.outbound.FileReadInteractionSpec
PhysicalDirectory=Directory_from_which_to_read
FileName=file_name_to_read
DeleteFile=true | false
where either true or false is selected for the DeleteFile parameter. Do not
use a regular expression for the FileName parameter value. For synchronous
reads, the file name must be known.
Oracle Application Server Adapter for Files/FTP 2-17
File and FTP Adapter Concepts
4.
Review the operation section of the WSDL file, which includes information
similar to the following:
&lt;operation name=&quot;Write&quot;&gt;
&lt;input message=&quot;...&quot;/&gt;
&lt;/operation&gt;
5.
Rename the input message to output message. The adapter uses this to
return the translated file contents. This now points to the native format definition
you created with the Adapter Configuration Wizard.
6.
Create an empty_msg message type:
&lt;element name=&quot;empty&quot;&gt;&lt;complexType/&gt;&lt;/element&gt;
7.
Add an input message to the &lt;operation&gt; pointing to an empty element as
defined in step 6.
8.
Modify the &lt;invoke&gt; activity in the BPEL file with appropriate inputVariable
(pointing to the empty_msg type) and outputVariable attributes.
A sample WSDL section looks as follows. Note that the dots (...) in the following
example represent areas you must complete with information appropriate to your
environment.
&lt;types&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
targetNamespace=&quot;...&quot;&gt;
&lt;import..../&gt;
&lt;element name=&quot;empty&quot;&gt;&lt;complexType/&gt;&lt;/element&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;message name=&quot;Address-List_msg&quot;&gt; /* The output message */
&lt;part name=&quot;...&quot; element=&quot;...:..&quot;/&gt;
&lt;/message&gt;
&lt;message name=&quot;Empty_msg&quot;&gt;
&lt;part name=&quot;Empty&quot; element=&quot;...:empty&quot;/&gt;
&lt;/message&gt;
&lt;portType name=&quot;SynchronousRead_ptt&quot;&gt;
&lt;operation name=&quot;SynchronousRead&quot;&gt;
&lt;input message=&quot;tns:Empty_msg&quot;/&gt;
&lt;output message=&quot;tns:Address-List_msg&quot;/&gt;
&lt;/operation&gt;
&lt;/portType&gt;
&lt;binding name=&quot;SynchronousRead_binding&quot; type=&quot;tns:SynchronousRead_ptt&quot;&gt;
&lt;jca:binding /&gt;
&lt;operation name=&quot;SynchronousRead&quot;&gt;
&lt;jca:operation
PhysicalDirectory=&quot;D:\work\jDevProjects&quot;
InteractionSpec=&quot;oracle.tip.adapter.file.outbound.FileReadInteractionSpec&quot;
FileName=&quot;address_csv.txt&quot;
DeleteFile=&quot;true&quot;
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
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2.2.2 File Adapter Write File Concepts
In the outbound direction, the file adapter receives messages from the BPEL process
and writes the messages to a file in a file system. This section provides an overview of
the outbound file writing capabilities of the file adapter. You use the Adapter
Configuration Wizard to configure the file adapter for use with your BPEL process.
This creates an outbound WSDL file named after the service name you specify with
the Adapter Configuration Wizard. An outbound header file named
fileAdapterOutboundheader.wsdl is also created.
This section contains the following topics:
■
Outbound Operation
■
Outbound File Directory Creation
■
Native Data Translation
■
Error Handling
■
Outbound Service Name WSDL File
■
Outbound Header WSDL File
2.2.2.1 Outbound Operation
For outbound operations with the file adapter, you select to perform an outbound
Write File operation. Figure 2–6 shows this selection.
Figure 2–6 Selecting the Write File Operation
2.2.2.2 Outbound File Directory Creation
For the outbound operation, you can specify the outbound directory, outbound file
naming convention to use and, if necessary, the batch file conventions to use.
The File Configuration window of the Adapter Configuration Wizard shown in
Figure 2–7 enables you to specify the directory for outgoing files and the outbound file
naming convention.
Oracle Application Server Adapter for Files/FTP 2-19
File and FTP Adapter Concepts
Figure 2–7 Adapter Configuration Wizard—Parameters for Outgoing Files
The following sections describe the file configuration information to specify:
■
Specifying Outbound Physical or Logic Directory Paths
■
Specifying the Outbound File Naming Convention
■
Specifying a Dynamic Outbound File Name
■
Batching Multiple Outbound Messages
Specifying Outbound Physical or Logic Directory Paths
You can specify outbound directory names as physical or logical paths. Physical paths
are values such as c:\outputDir.
If you specify logical parameters, the generated WSDL file looks as follows for the
logical outbound directory name OutputFileDir.
&lt;jca:binding /&gt;
&lt;operation name=&quot;Write&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.file.outbound.FileInteractionSpec&quot;
LogicalDirectory=&quot;OutputFileDir&quot;
FileNamingConvention=&quot;po_%SEQ%.xml&quot;&gt;
&lt;/jca:operation&gt;
.....
In the BPEL partner link in the bpel.xml file, you then specify an outbound
partner link binding property through the Property tab of the partner link. This
resolves the mapping between the logical directory name and the actual physical
directory name.
&lt;?xml version = '1.0' encoding = 'UTF-8'?&gt;
&lt;BPELSuitcase&gt;
&lt;BPELProcess id=&quot;ComplexStructure&quot; src=&quot;ComplexStructure.bpel&quot;&gt;
&lt;partnerLinkBindings&gt;
&lt;partnerLinkBinding name=&quot;InboundPL&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;ComplexStructureInbound.wsdl&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
&lt;partnerLinkBinding name=&quot;OutboundPL&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;ComplexStructureOutbound.wsdl&lt;/property&gt;
&lt;property name=&quot;OutputFileDir&quot;&gt;C:/ora_
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home/integration/bpm/samples/tutorials/
121.FileAdapter/ComplexStructure/outputDir/&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
&lt;/partnerLinkBindings&gt;
&lt;activationAgents&gt;
&lt;activationAgentclassName=
&quot;oracle.tip.adapter.fw.agent.jca.JCAActivationAgent&quot;partnerLink=&quot;InboundPL&quot;&gt;
&lt;property name=&quot;portType&quot;&gt;Read_ptt&lt;/property&gt;
&lt;/activationAgent&gt;
&lt;/activationAgents&gt;
&lt;/BPELProcess&gt;
&lt;/BPELSuitcase&gt;
Note: Ensure that you limit the length of outbound file names (the
file name, plus the complete directory path) to 200 characters. This is
not an exact limit, but rather a recommendation. When an outbound
file name is long (for example, 215 characters), a blank file with that
name is created in the outbound directory.
Specifying the Outbound File Naming Convention
Specify the naming convention to use for outgoing files. You cannot enter completely
static names such as po.txt. This is to ensure the uniqueness of outgoing files names,
which prevents files from being inadvertently overwritten. Instead, outgoing file
names must be a combination of static and dynamic portions.
The prefix and suffix portions of the file example shown in Figure 2–7 are static (for
example, po_ and .xml). The %SEQ% variable of the name is dynamic and can be a
sequence number or a time stamp (for example, po_%yyMMddHHmmss%.xml to create
a file with a time stamp).
The sequence number is written to a file if the system goes down. If you choose a
name starting with po_, followed by a sequence number and the extension txt as the
naming convention of the outgoing files, then you must specify po_%SEQ%.txt.
If you choose a name starting with po_, followed by a time stamp with pattern
yyyy.MM.dd and the extension txt as the naming convention of the outgoing file,
then you must specify po_%yyyy.MM.dd%.txt. For example, the outgoing file name
can be po_2004.11.29.txt.
You cannot use a regular expression for outbound synchronous reads. In these cases,
the exact file name must be known.
A time stamp is specified by date and time pattern strings. Within date and time
pattern strings, unquoted letters from 'A' to 'Z' and from 'a' to 'z' are interpreted
as pattern letters representing the components of a date or time string. Text can be
quoted using single quotes (') to avoid interpretation. The characters &quot;''&quot; represent a
single quote. All other characters are not interpreted.
The Java pattern letters are defined in Table 2–3.
Table 2–3
Java Pattern Letters
Letter
Date or Time
Component
Presentation
Examples
G
Era designator
Text
AD
y
Year
Year
1996; 96
M
Month in year
Month
July; Jul; 07
Oracle Application Server Adapter for Files/FTP 2-21
File and FTP Adapter Concepts
Table 2–3 (Cont.) Java Pattern Letters
Letter
Date or Time
Component
Presentation
Examples
w
Week in year
Number
27
W
Week in month
Number
2
D
Day in year
Number
189
d
Day in month
Number
10
F
Day of week in month Number
2
E
Day in week
Text
Tuesday; Tue
a
AM/PM marker
Text
PM
H
Hour in day (0-23)
Number
0
k
Hour in day (1-24)
Number
24
K
Hour in AM/PM
(0-11)
Number
0
h
Hour in AM/PM
(1-12)
Number
12
m
Minute in hour
Number
30
s
Second in minute
Number
55
S
Millisecond
Number
978
z
Time zone
General Time Zone
Pacific Standard
Time; PST;
GMT-08:00
Z
Time zone
RFC 822 Time Zone
-0800
Different presentations in the pattern are as follows:
■
Text
For formatting, if the number of pattern letters is four or more, the full form is
used; otherwise, a short or abbreviated form is used if available. For parsing, both
forms are accepted, independent of the number of pattern letters.
■
Number
For formatting, the number of pattern letters is the minimum number of digits,
and shorter numbers are zero-padded to this amount. For parsing, the number of
pattern letters is ignored unless it is needed to separate two adjacent fields.
■
Year
For formatting, if the number of pattern letters is two, the year is truncated to two
digits; otherwise, it is interpreted as a number.
For parsing, if the number of pattern letters is more than two, the year is interpreted
literally, regardless of the number of digits. Using the pattern MM/dd/yyyy,
01/11/12 parses to Jan 11, 12 A.D.
For parsing with the abbreviated year pattern (y or yy), the abbreviated year is
interpreted relative to some century. The date is adjusted to be within 80 years before
and 20 years after the time instance is created. For example, using a pattern of
MM/dd/yy and Jan 1, 1997 is created; the string 01/11/12 is interpreted as Jan
11, 2012, while the string 05/04/64 is interpreted as May 4, 1964. During
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parsing, only strings consisting of exactly two digits are parsed into the default
century. Any other numeric string, such as a one-digit string, a three-or-more-digit
string, or a two-digit string that is not all digits (for example, -1), is interpreted
literally. So 01/02/3 or 01/02/003 is parsed, using the same pattern, as Jan 2, 3
AD. Likewise, 01/02/-3 is parsed as Jan 2, 4 BC.
■
Month
If the number of pattern letters is 3 or more, the month is interpreted as text;
otherwise, it is interpreted as a number.
■
General time zone
Time zones are interpreted as text if they have names. For time zones representing
a GMT offset value, the following syntax is used:
GMTOffsetTimeZone:
GMT Sign Hours : Minutes
Sign: one of
+ Hours:
Digit
Digit Digit
Minutes:
Digit Digit
Digit: one of
0 1 2 3 4 5 6 7 8 9
Hours must be between 0 and 23, and Minutes must be between 00 and 59. The
format is locale-independent and digits must be taken from the Basic Latin block of the
Unicode standard.
For parsing, RFC 822 time zones are also accepted.
For formatting, the RFC 822 4-digit time zone format is used:
RFC822TimeZone:
Sign TwoDigitHours Minutes
TwoDigitHours:
Digit Digit
TwoDigitHours must be between 00 and 23. Other definitions are the same as for
general time zones.
For parsing, general time zones are also accepted.
Specifying a Dynamic Outbound File Name
You can also use variables to specify dynamic outbound file names through use of the
OutboundHeader_msg message name in the
fileAdapterOutboundHeader.wsdl.
&lt;definitions
name=&quot;fileAdapter&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot; &gt;
&lt;types&gt;
&lt;schema attributeFormDefault=&quot;qualified&quot; elementFormDefault=&quot;qualified&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:FILEAPP=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;&gt;
&lt;element name=&quot;OutboundFileHeaderType&quot;&gt;
Oracle Application Server Adapter for Files/FTP 2-23
File and FTP Adapter Concepts
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;fileName&quot; type=&quot;string&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;!-- Header Message --&gt;
&lt;message name=&quot;OutboundHeader_msg&quot;&gt;
&lt;part element=&quot;tns:OutboundFileHeaderType&quot; name=&quot;outboundHeader&quot;/&gt;
&lt;/message&gt;
&lt;/definitions&gt;
Create a variable of message type OutboundHeader_msg, assign it a value, and use it
in the Adapter tab of an invoke activity. For example:
&lt;variables&gt;
&lt;variable name=&quot;fileHeader&quot; messageType=&quot;file:OutboundHeader_msg&quot;/&gt;
[..]
&lt;assign&gt;
&lt;copy&gt;
&lt;from&gt;*testfile.txt*&lt;/from&gt;
&lt;to variable=&quot;fileHeader&quot; part=&quot;outboundHeader&quot;
query=&quot;/file:OutboundFileHeaderType/file:fileName&quot;/&gt;
&lt;/copy&gt;
&lt;/assign&gt;
&lt;invoke name=&quot;FileSend&quot; partnerLink=&quot;outboundPL&quot;
portType=&quot;out:FileWrite_PortType&quot; operation=&quot;Write&quot;
inputVariable=&quot;payload&quot;
bpelx:inputHeaderVariable=&quot;fileHeader&quot;/&gt;
See the online Help that is included with the Adapter tab in JDeveloper BPEL
Designer for more information.
Batching Multiple Outbound Messages
In the simplest scenario, you specify writing a single file to a single message. You can
also specify the outbound method for batch file writing. This enables you to specify
the number of messages in one batch file to publish. The following batch file settings
are provided in the File Configuration window shown in Figure 2–7:
■
Number of messages equals
Specify a value that, when equaled, causes a new outgoing file to be created.
■
Elapsed time exceeds
Specify a time that, when equaled, causes a new outgoing file to be created.
■
File size exceeds
Specify a file size that, when equaled, causes a new outgoing file to be created. For
example, assume you specify a value of three for the number of messages received
and a value of 1 MB for the file size. When you receive two messages that when
combined equal or exceed 1 MB, or three messages that are less than 1 MB, an
output file is created.
If the file adapter goes down during batching, it starts batching at the point at which it
left off upon recovery.
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2.2.2.3 Native Data Translation
The next Adapter Configuration Wizard window that appears is the Messages
window shown in Figure 2–8. This window enables you to select the XSD schema file
for translation.
Figure 2–8 Specifying the Schema
As with specifying the schema for the inbound direction, you can perform the
following tasks in this window:
■
Specify if native format translation is not required
■
Select the XSD schema file for translation
■
Start the Native Format Builder Wizard to create an XSD file from file formats such
as CSV, fixed-length, DTD, and COBOL Copybook
See Section 2.2.1.7, &quot;Native Data Translation&quot; for more information about the Messages
window.
2.2.2.4 Error Handling
As with inbound files, the file adapter guarantees once-only delivery of outbound
files. This includes guaranteed delivery of large files through FTP. If your system goes
down, the write functionality of the file adapter upon restart has the knowledge to
proceed from where it left off in the previous run, thereby avoiding duplicate
messages. If the target host is unavailable, the file adapter supports retrying to send
documents. For example, if the directory to which it is trying to write is read only, the
file adapter tries to write again. You must configure two partner link retry properties
from the Property tab of the partner link (updates the bpel.xml file):
&lt;partnerLinkBinding name=&quot;WriteFile&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;WriteFile.wsdl&lt;/property&gt;
&lt;property name=&quot;retryMaxCount&quot;&gt;10&lt;/property&gt;
&lt;property name=&quot;retryInterval&quot;&gt;60&lt;/property&gt;
The write operation eventually succeeds (if the problem is resolved in a timely
fashion). If the problem is not resolved within the retry period, a binding fault is sent
back to the BPEL process.
Oracle Application Server Adapter for Files/FTP 2-25
File and FTP Adapter Concepts
2.2.2.5 Outbound Service Name WSDL File
When you complete configuration of the file adapter with the Adapter Configuration
Wizard, a WSDL file is generated for the outbound direction. The file is named after
the service name you specified on the Service Name window of the Adapter
Configuration Wizard shown in Figure 1–4. You can rerun the wizard at any time to
change your operation definitions.
The InteractionSpec parameters in the WSDL file contain the outbound
configuration information that you specified with the Adapter Configuration Wizard
during design time. The InteractionSpec parameters and a set of outbound file
adapter properties are part of the outbound WSDL file. The outbound WSDL includes
the following information:
&lt;jca:binding /&gt;
&lt;operation name=&quot;Write&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.file.outbound.FileInteractionSpec&quot;
PhysicalDirectory=&quot;C:/ora_
home/integration/bpm/samples/tutorials/121.FileAdapter/ComplexStructure/outputDir/
&quot;
FileNamingConvention=&quot;po_%SEQ%.xml&quot;
NumberMessages=&quot;1&quot;
ElapsedTime=&quot;60&quot;
FileSize=&quot;1000000&quot;
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;hdr:OutboundHeader_msg&quot; part=&quot;outboundHeader&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
&lt;/binding&gt;
The outbound file adapter uses the following configuration parameters:
■
PhysicalDirectory
This parameter specifies the physical directory in which to write output files. The
parameter is of type String. The outbound directory where the outgoing files are
written is mandatory. You must specify the physical directory or logical directory.
■
LogicalDirectory
This parameter specifies the logical directory in which to write output files. The
parameter is of type String.
■
NumberMessages
This parameter is used for outbound batching. The outgoing file is created when
the number of messages condition is met. The parameter is of type String and is
not mandatory. The default value is 1.
■
ElapsedTime
This parameter is used for outbound batching. When the time specified elapses,
the outgoing file is created. The parameter is of type String and is not
mandatory. The default value is 1 minute.
■
FileSize
This parameter is used for outbound batching. The outgoing file is created when
the file size condition is met. The parameter is of type String and is not
mandatory. The default value is 1000 kb.
2-26 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
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■
FileNamingConvention
This parameter is for the naming convention for the outbound write operation
file. The parameter is of type String and is mandatory.
2.2.2.6 Outbound Header WSDL File
The WSDL file shown in Section 2.2.2.5, &quot;Outbound Service Name WSDL File&quot;
includes two attributes that indicate which message and part define the operation
headers:
&lt;jca:header message=&quot;hdr:OutboundHeader_msg&quot; part=&quot;outboundHeader&quot;/&gt;
The fileAdapterOutboundHeader.wsdl file defines these attributes, as well as
information about the outbound file name. This file is created along with the service
name WSDL file, and displays in the Applications Navigator of JDeveloper BPEL
Designer.
&lt;definitions
name=&quot;fileAdapter&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot; &gt;
&lt;types&gt;
&lt;schema attributeFormDefault=&quot;qualified&quot; elementFormDefault=&quot;qualified&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:FILEAPP=&quot;http://xmlns.oracle.com/pcbpel/adapter/file/&quot;&gt;
&lt;element name=&quot;OutboundFileHeaderType&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;fileName&quot; type=&quot;string&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;!-- Header Message --&gt;
&lt;message name=&quot;OutboundHeader_msg&quot;&gt;
&lt;part element=&quot;tns:OutboundFileHeaderType&quot; name=&quot;outboundHeader&quot;/&gt;
&lt;/message&gt;
&lt;/definitions&gt;
2.2.3 FTP Adapter for Get File Concepts
In the inbound direction, the FTP adapter works the same as the Read File operations
of the file adapter in that it polls and gets files from a file system for processing. The
major difference is that the FTP adapter is used for remote file exchanges. Because of
this, the Adapter Configuration Wizard asks for connection information to an FTP
server to be used later, as shown in Figure 2–9.
Oracle Application Server Adapter for Files/FTP 2-27
File and FTP Adapter Concepts
Figure 2–9 Specifying FTP Server Connection Information
To create the FTP server connection that you specify in Figure 2–9, you must edit the
Oracle_
Home\integration\orabpel\system\appserver\oc4j\j2ee\home\applica
tion-deployments\default\FtpAdapter\oc4j-ra.xml deployment
descriptor file for adapter instance JNDI name and FTP server connection information.
A sample of oc4j-ra.xml is as follows:
&lt;?xml version=&quot;1.0&quot;?&gt;
&lt;!DOCTYPE oc4j-connector-factories PUBLIC &quot;-//Oracle//DTD Oracle Connector
9.04//EN&quot; &quot;http://xmlns.oracle.com/ias/dtds/oc4j-connector-factories-9_04.dtd&quot;&gt;
&lt;oc4j-connector-factories&gt;
&lt;connector-factory location=&quot;eis/Ftp/FtpAdapter&quot; connector-name=&quot;FTP Adapter&quot;&gt;
&lt;config-property name=&quot;host&quot; value=&quot;stada55.us.oracle.com&quot;/&gt;
&lt;config-property name=&quot;port&quot; value=&quot;21&quot;/&gt;
&lt;config-property name=&quot;username&quot; value=&quot;anonymous&quot;/&gt;
&lt;config-property name=&quot;password&quot; value=&quot;password&quot;/&gt;
&lt;/connector-factory&gt;
&lt;/oc4j-connector-factories&gt;
The adapter instance JNDI name is specified as eis/Ftp/FtpAdapter and
connection information such as host, port, username, and password are provided as
configuration properties.
Notes:
■
The directory path to the oc4j-ra.xml file shown in preceding
example is for the BPEL Process Manager for Developers
installation type. If you selected the BPEL Process Manager for
OracleAS Middle Tier installation type, this file is located in:
Oracle_Home\j2ee\OC4J_BPEL\application-deployments\default\
FtpAdapter
■
The FTP adapter does not support the FTP commands RESTART
and RECOVERY during the transfer of large files.
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File and FTP Adapter Concepts
After logging in, you select the Get File (read) operation and the type of file to deliver.
Figure 2–10 shows this selection.
Figure 2–10 Selecting the Get File Operation
For inbound and outbound binary file transfers, the Oracle_
Home\integration\orabpel\system\appserver\oc4j\j2ee\home\connect
ors\FtpAdapter\FtpAdapter\META-INF\ra.xml file includes a
serverLineSeparator property. This property is automatically used to determine
line separators when you transfer data in binary mode only.
&lt;config-property-name&gt;serverLineSeparator&lt;/config-property-name&gt;
&lt;config-property-type&gt;java.lang.String&lt;/config-property-type&gt;
&lt;config-property-value&gt;\n&lt;/config-property-value&gt;
This property is not used when transferring data in ASCII mode. This is because in
ASCII mode, the line separators are determined by the operating system on which the
FTP server is running.
From this point onward, the windows of the Adapter Configuration Wizard window
for the Get File operation are the same as those for the Read File operation of the FTP
adapter. Table 2–4 lists the windows that display and provides references to sections
that describe their functionality.
Table 2–4
Adapter Configuration Wizard Windows for Get File Operation
Window
See...
File Directories (Figure 2–2)
Section 2.2.1.2, &quot;Inbound File Directory Specifications&quot;
File Filtering (Figure 2–3)
Section 2.2.1.3, &quot;File Matching and Batch Processing&quot;
File Polling (Figure 2–4)
Section 2.2.1.4, &quot;File Polling&quot;
Messages (Figure 2–5)
Section 2.2.1.7, &quot;Native Data Translation&quot;
An additional Adapter Configuration Wizard window is also available for advanced
users. This window is shown in Figure 2–11 and only appears after you make either or
both of the following selections on the File Polling window shown in Figure 2–4:
■
Do not select the Delete files after successful retrieval check box.
■
Set the value of the Minimum File Age field to a value greater than 0.
Oracle Application Server Adapter for Files/FTP 2-29
File and FTP Adapter Concepts
Figure 2–11 File Modification Time
This window enables you to specify one of the following methods for obtaining the
modification time of files on the remote FTP server:
■
File System
This option enables you to obtain the date/time format of the file modification
time with the file system listing command. However, this option is rarely used and
not supported by all FTP servers. See your FTP server documentation to determine
whether your server supports the file system listing command, which command
line syntax to use, and how to interpret the output.
For example, if the file system listing command quote mdtm filename is
supported and returns the following information:
213 20050602102633
specify the start index, end index, and date/time format of the file modification
time in the Data/Time Format field as a single value separated by commas (for
example, 4,18,yyyyMMddHHmmss).
Where:
–
4 is the start index of the file modification time.
–
18 is the end index of the file modification time.
–
yyyyMMddHHmmss is the data/time format of the file modification time
obtained with the quote mdtm filename command.
The resulting service_name.wsdl file includes the following parameters and
values:
FileModificationTime=&quot;FileSystem&quot;
ModificationTimeFormat=&quot;4,18,yyyyMMddHHmmss&quot;
To handle the time zone issue, you must also be aware of the time stamp
difference. The time zone of the FTP server is determined by using the Windows
date/time properties (for example, by double-clicking the time showing in the
Windows task bar). You must then convert the time difference between the FTP
server and the system on which the FTP adapter is running to milliseconds and
add the value as a property in the bpel.xml file:
&lt;activationAgents&gt;
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&lt;activationAgent ...&gt;
&lt;property name=&quot;timestampOffset&quot;&gt;2592000000&lt;/property&gt;
■
Directory Listing
This option enables you to obtain the date/time format from the file modification
time with the FTP directory listing command. For example, if the directory listing
command (ls -l) returns the following information:
12-27-04
07:44AM
2829 NativeData2.txt
specify the start index, end index, and date/time format of the file modification
time as a single value separated by commas in either the Old File Date/Time
Format field or the Recent File Date/Time Format field (for example, 0,17,
MM-dd-yy hh:mma).
Where:
–
0 is the start index of the file modification time.
–
17 is the end index of the file modification time.
–
MM-dd-yy hh:mma is the data/time format of the file modification time
obtained with the ls -l command. For this example, the value is entered in
the Recent File Date/Time Format field. This field indicates that the format is
obtained from the most recent file adhering to the naming convention,
whereas the Old File Date/Time Format field obtains the format from the
oldest file.
The resulting service_name.wsdl file includes the following parameters and
values:
FileModificationTime=&quot;DirListing&quot;
ModificationTimeFormat=&quot;0,17, MM-dd-yy hh:mma&quot;
To handle the time zone issue, you must also be aware of the time stamp
difference. The time zone of the FTP server is determined by using the Windows
date/time properties (for example, by double-clicking the time showing in the
Windows task bar). You must then convert the time difference between the FTP
server and the system on which the FTP adapter is running to milliseconds and
add the value as a property in the bpel.xml file:
&lt;activationAgents&gt;
&lt;activationAgent ...&gt;
&lt;property name=&quot;timestampOffset&quot;&gt;2592000000&lt;/property&gt;
■
File Name Substring
This option enables you to obtain the modification time from the file name. For
example, if the name of the file is fixedLength_20050324.txt, you can specify
the following values:
–
The start index in the Substring Begin Index field (for example, 12).
–
The end index in the End Index field (for example, 20).
–
The date and time format in the Date/Time Format field conforming to the
Java SimpleDateFormat to indicate the file modification time in the file
name (for example, yyyyMMdd).
The resulting service_name.wsdl file includes the following parameters and
values:
FileModificationTime=&quot;Filename&quot;
Oracle Application Server Adapter for Files/FTP 2-31
File and FTP Adapter Concepts
FileNameSubstringBegin=&quot;12&quot;
FileNameSubstringEnd=&quot;20&quot;
ModificationTimeFormat=&quot;yyyyMMdd&quot;
When the Adapter Configuration Wizard completes, configuration files are created in
the Applications Navigator section of JDeveloper BPEL Designer.
The inbound service WSDL file name that is created is also similar to that of the file
adapter. The main differences include the operation type and the file type.
&lt;pc:inbound_binding /&gt;
&lt;operation name=&quot;Get&quot;&gt;
&lt;jca:operation
FileType=&quot;binary&quot;
The inbound header WSDL file named ftpAdapterInboundHeader.wsdl looks as
follows:
&lt;definitions
name=&quot;fileAdapter&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot; &gt;
&lt;types&gt;
&lt;schema attributeFormDefault=&quot;qualified&quot; elementFormDefault=&quot;qualified&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:FTPAPP=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;&gt;
&lt;element name=&quot;InboundFTPHeaderType&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;fileName&quot; type=&quot;string&quot;/&gt;
&lt;element name=&quot;ftpHost&quot; type=&quot;string&quot;/&gt;
&lt;element name=&quot;ftpPort&quot; type=&quot;string&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;!-- Header Message --&gt;
&lt;message name=&quot;InboundHeader_msg&quot;&gt;
&lt;part element=&quot;tns:InboundFTPHeaderType&quot; name=&quot;inboundHeader&quot;/&gt;
&lt;/message&gt;
&lt;/definitions&gt;
See Section 2.2.1.8, &quot;Error Handling&quot; and Section 2.2.1.9, &quot;Guaranteed Delivery and
Recovery from Server Failures&quot; for more information about error handling and
guaranteed delivery capabilities.
2.2.4 FTP Adapter for Put File Concepts
In the outbound direction, the FTP adapter works the same as the Write File operations
of the file adapter in that it receives messages from the BPEL process and writes the
messages in a file to a file system (in this case, remote). Because of this, the Adapter
Configuration Wizard prompts you to connect to the FTP server with the adapter
instance JNDI name, as shown in Figure 2–9.
After logging in, you select the Put File (write) operation and the type of file to deliver.
Figure 2–12 shows this selection.
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Figure 2–12 Selecting the Put File Operation
From this point onward, the windows of the Adapter Configuration Wizard window
for the Put File operation are the same as those for the Write File operation of the file
adapter. Table 2–5 lists the windows that display and provides references to sections
that describe their functionality.
Table 2–5
Adapter Configuration Wizard Windows for Put File Operation
Window
See Section...
File Configuration (Figure 2–7)
Section 2.2.2.2, &quot;Outbound File Directory Creation&quot;
Messages (Figure 2–8)
Section 2.2.2.3, &quot;Native Data Translation&quot;
When the Adapter Configuration Wizard completes, configuration files are created in
the Applications Navigator section of JDeveloper BPEL Designer.
The outbound service WSDL file name that is created is also similar to that of the file
adapter. The main differences include the operation type and the file type.
&lt;pc:inbound_binding /&gt;
&lt;operation name=&quot;Put&quot;&gt;
&lt;jca:operation
FileType=&quot;binary&quot;
The outbound header WSDL file named ftpAdapterOutboundHeader.wsdl looks
as follows:
&lt;definitions
name=&quot;fileAdapter&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot; &gt;
&lt;types&gt;
&lt;schema attributeFormDefault=&quot;qualified&quot; elementFormDefault=&quot;qualified&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:FTPAPP=&quot;http://xmlns.oracle.com/pcbpel/adapter/ftp/&quot;&gt;
&lt;element name=&quot;OutboundFTPHeaderType&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;fileName&quot; type=&quot;string&quot;/&gt;
Oracle Application Server Adapter for Files/FTP 2-33
Using Secure FTP with the FTP Adapter
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;!-- Header Message --&gt;
&lt;message name=&quot;OutboundHeader_msg&quot;&gt;
&lt;part element=&quot;tns:OutboundFTPHeaderType&quot; name=&quot;outboundHeader&quot;/&gt;
&lt;/message&gt;
&lt;/definitions&gt;
See Section 2.2.2.4, &quot;Error Handling&quot; for more information about error handling
capabilities.
2.3 Using Secure FTP with the FTP Adapter
The FTP adapter supports the use of the secure FTP feature on Solaris. This section
provides an overview of secure FTP functionality and describes how to install and
configure this feature.
This section contains the following tasks:
■
Secure FTP Overview
■
Installing and Configuring OpenSSL
■
Installing and Configuring vsftpd
■
Creating an Oracle Wallet
■
Setting Up the FTP Adapter
Note:
The FTP adapter supports the secure FTP feature on Solaris
only.
2.3.1 Secure FTP Overview
In environments in which sensitive data is transferred to remote servers (for example,
sending credit card information to HTTP servers), the issue of security is very
important. Security in these cases primarily refers to two requirements:
■
Trust in the remote server with which you are exchanging data
■
Protection from third parties trying to intercept the data
Secure socket layer (SSL) certificates and encryption focus on satisfying these two
security requirements. When SSL is used in the context of FTP, the resulting security
mechanism is known as FTPS (or FTP over SSL).
To gain the trust of clients in SSL environments, servers obtain certificates (typically,
X.509 certificates) from recognized certificate authorities. When you set up the FTP
server vsftpd in Section 2.3.3, &quot;Installing and Configuring vsftpd&quot;, you use openSSL to
create a certificate for the server. Every client trusts a few parties to begin. If the server
is one of these trusted parties, or if the server’s certificate was issued by one of these
parties, you have established trust, even indirectly. For example, if the server’s
certificate was issued by authority A, which has a certificate issued by authority B, and
the client trusts B, that is good enough. For the setup shown in Figure 2–3, the server’s
certificate is directly imported into the client’s certificate store (or Oracle Wallet) as a
trusted certificate.
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Figure 2–13 Establishing Trust
Client checks for
server certificate
in its trusted store
4
3
1
At runtime, client
gets server
certificate
Certificate
Server generates
certificate
Certificate
2
Client imports server
certificate in its
trusted store
Trusted Store
Certificate
You make the data being transferred immune to spying by encrypting it before
sending it and decrypting it after receiving it. Symmetric encryption (using the same
key to encrypt and decrypt data) is much faster for large amounts of data than the
public key and private key approach. Symmetric encryption is the approach used by
FTPS. However, before the client and server can use the same key to encrypt and
decrypt data, they must agree on a common key. This is typically done by the client
performing the following tasks:
■
■
■
Generating a session key (to be used to encrypt and decrypt data)
Encrypting this session key using the server’s public key that is part of the server’s
certificate
Sending the key to the server
The server decrypts this session key using its private key and subsequently uses it to
encrypt file data before sending it to the client.
The remaining subsections describe how to install and configure secure FTP.
2.3.2 Installing and Configuring OpenSSL
OpenSSL is an open source implementation of the SSL protocol. OpenSSL implements
basic cryptographic functions and provides utility functions. Install and configure
OpenSSL on the Solaris host to use as the FTP server.
1.
Go to the following URL:
http://www.openssl.org/source
2.
Locate openssl-0.9.7g.tar.gz in the list of available files. For example:
3132217 Apr 11 17:21:51 2005 openssl-0.9.7g.tar.gz (MD5) (PGP sign)
3.
4.
Download the following files:
■
openssl-0.9.7g.tar.gz
■
openssl-0.9.7g.tar.gz.md5 (under the MD5 link)
■
openssl-0.9.7g.tar.gz.asc (under the PGP sign link
Unzip the following file using gunzip.
gunzip openssl-0.9.7g.tar.gz
Oracle Application Server Adapter for Files/FTP 2-35
Using Secure FTP with the FTP Adapter
5.
Untar the following file:
tar xvf openssl-0.9.7g.tar
6.
Change directories to the following location:
cd openssl-0.9.7g
7.
Run the following command:
./config --prefix=/usr --openssldir=/usr/local/openssl
8.
Change to the Bourne shell (if not already using it):
sh
9.
Configure and export the PATH:
PATH=${PATH}:/usr/ccs/bin; export PATH
10. Run the following command:
make
11. Exit the Bourne shell:
exit
12. Run the following command:
make test
13. Log in as the super user:
msu
14. Enter the password when prompted.
15. Run the following command:
make install
2.3.3 Installing and Configuring vsftpd
The vsftpd server is a secure and fast FTP server for UNIX systems. Install and
configure vsftpd on the Solaris host to use as the FTP server.
1.
Go to the following location:
ftp://vsftpd.beasts.org/users/cevans/
2.
Download vsftpd-2.0.3 (you need the tar and signature file (.asc file)). For
example:
[BINARY]
[FILE]
3.
vsftpd-2.0.3.tar.gz. . . . . . . . . . .
vsftpd-2.0.3.tar.gz.asc. . . . . . . . .
[Mar 19 21:26]
[Mar 19 21:26]
Unzip the following file using gunzip.
gunzip vsftpd-2.0.3.tar.gz
4.
Unzip the tar file:
tar xvf vsftpd-2.0.3.tar
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5.
Change directories to the following location:
cd vsftpd-2.0.3
6.
Make the following change in the builddefs.h file:
#undef VSF_BUILD_SSL
to
#define VSF_BUILD_SSL
7.
Log in as the super user:
msu
8.
Enter the password when prompted.
9.
Create a file named vsftpd.conf with the following settings in the /etc
directory:
# Standalone mode
listen=YES
max_clients=200
max_per_ip=4
# Access rights
anonymous_enable=YES
#chroot_local_user=YES
#userlist_enable=YES
ftp_username=ftp
local_enable=YES
write_enable=YES
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
chown_uploads=YES
chown_username=ftp
# Security
anon_world_readable_only=NO
allow_anon_ssl=YES
ssl_enable=YES
connect_from_port_20=YES
hide_ids=YES
pasv_min_port=50000
pasv_max_port=60000
# Features
ftpd_banner=&quot;Welcome to the FTP Service&quot;
xferlog_enable=YES
ls_recurse_enable=NO
ascii_download_enable=NO
async_abor_enable=YES
# Performance
one_process_model=NO
idle_session_timeout=120
data_connection_timeout=300
accept_timeout=60
connect_timeout=60
anon_max_rate=50000
Oracle Application Server Adapter for Files/FTP 2-37
Using Secure FTP with the FTP Adapter
Copies of the vsftpd.conf file appear in several locations in
the vsftpd-2.0.3 directory structure. If you use one of those files to
create the vsftpd.conf file in the /etc directory, ensure that it only
includes the parameters and settings described in Step 9.
Note:
10. Run the following commands:
mkdir /var/ftp
useradd -d /var/ftp ftp
chown root /var/ftp
chmod og-w /var/ftp
mkdir /usr/share/empty
mkdir /usr/share/ssl
mkdir /usr/share/ssl/certs
11. Run the following command:
openssl req -x509 -nodes -newkey rsa:1024 -keyout
/usr/share/ssl/certs/vsftpd.pem -out /usr/share/ssl/certs/vsftpd.pem
12. Run the vsftpd daemon from the vsftpd-2.0.3 directory:
./vsftpd
2.3.4 Creating an Oracle Wallet
Oracle Wallet Manager is an application for managing and editing security credentials
in Oracle wallets. A wallet is a password-protected container that stores authentication
and signing credentials, including private keys, certificates, and trusted certificates, all
of which are used by SSL for strong authentication.
1.
Create a new wallet in Oracle Wallet Manager.
2.
Import vsftpd.pem from step 11 in Section 2.3.3, &quot;Installing and Configuring
vsftpd&quot; as a trusted certificate in this wallet.
3.
Save this wallet in PKCS # 12 (.p12) format.
See the Oracle Application Server Administrator’s Guide for details about using Oracle
Wallet Manager.
2.3.5 Setting Up the FTP Adapter
1.
Perform the following tasks on your Solaris host:
mkdir /var/ftp/inDir
mkdir /var/ftp/outDir
chmod 777 /var/ftp/inDir /var/ftp/outDir
2.
Specify the FTP connection parameters in the FTP adapter oc4j-ra.xml file. The
location of this file is based on the installation type you selected.
■
■
If you selected BPEL Process Manager for Developers, edit the Oracle_
Home\integration\orabpel\system\appserver\oc4j\j2ee\home\a
pplication-deployments\default\FtpAdapter\oc4j-ra.xml file.
If you selected BPEL Process Manager for OracleAS Middle Tier, edit the
Oracle_Home\j2ee\OC4J_
BPEL\application-deployments\default\FtpAdapter\oc4j-ra.xm
l file.
2-38 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the File and FTP Adapters
A sample oc4j-ra.xml is as follows:
&lt;connector-factory location=&quot;eis/Ftp/FtpAdapter&quot; connector-name=&quot;FTP Adapter&quot;&gt;
&lt;config-property name=&quot;host&quot; value=&quot;usunnbf29.us.oracle.com&quot;/&gt;
&lt;config-property name=&quot;port&quot; value=&quot;21&quot;/&gt;
&lt;config-property name=&quot;username&quot; value=&quot;ftp&quot;/&gt;
&lt;config-property name=&quot;password&quot; value=&quot;password&quot;/&gt;
&lt;config-property name=&quot;useFtps&quot; value=&quot;true&quot;/&gt;
&lt;config-property name=&quot;walletLocation&quot; value=&quot;D:\wallet\ewallet.p12&quot;/&gt;
&lt;config-property name=&quot;walletPassword&quot; value=&quot;welcome1&quot;/&gt;
&lt;config-property name=&quot;channelMask&quot; value=&quot;both&quot;/&gt;
&lt;config-property name=&quot;securePort&quot; value=&quot;990&quot;/&gt;
&lt;/connector-factory&gt;
Where...
Is...
useFtps
Set to true. This setting is required to use FTP over SSL. The default is
false.
walletLocation The location of the wallet created in Section 2.3.4, &quot;Creating an Oracle
Wallet&quot;
walletPassword The password of the wallet
channelMask
The type of channel: control channel or data channel. Possible values are
both, control, data, or none. The default is both.
securePort
The port for FTP over SSL. The default is 990.
3.
Restart Oracle BPEL Server after changing the oc4j-ra.xml file.
You have now installed and configured secure FTP and are ready to use this
feature with the FTP adapter.
2.4 Use Cases for the File and FTP Adapters
Oracle BPEL Process Manager includes a number of demonstrations of file and FTP
adapters. Some of these demonstrations are described in Readme files. Others are
described in the Oracle BPEL Process Manager documentation set. This section
provides an overview of these demonstrations and a reference to documentation that
more fully describes the scenarios.
This section contains the following topics:
■
File Adapter Use Cases
■
FTP Adapter Use Case
2.4.1 File Adapter Use Cases
This section provides an overview of file adapter demonstrations.
This section contains the following topics:
■
File Reading
■
Message Debatching
■
Reading Delimited Content Files
■
Reading Positional (Fixed Length) Content Files
■
File Writing
Oracle Application Server Adapter for Files/FTP 2-39
Use Cases for the File and FTP Adapters
2.4.1.1 File Reading
Several file reading demonstrations are available:
■
A complex structure demonstration shows how to use the file read and write
functionality of the file adapter. For a demonstration of a complex structure, go to
Oracle_Home\integration\orabpel\samples\tutorials\121.FileAdapter\
ComplexStructure
■
A simple file reading demonstration is provided as part of a larger tutorial that
guides you through the design and execution of a sophisticated process that uses
synchronous and asynchronous services, parallel flows of execution, conditional
branching logic, fault handling and exceptions management, transformations, the
file adapter, the database adapter, and human workflow, notification, and sensor
functionality. In the file reading portion, you configure the file adapter to read an
inbound purchase order request from a file in a directory. See Oracle BPEL Process
Manager Order Booking Tutorial for a tutorial that uses the file reading
functionality of the file adapter.
2.4.1.2 Message Debatching
This demonstration shows how the file adapter processes native data containing
multiple messages defined in a custom format. The file adapter takes a single inbound
file of two records and outputs each record to its own file. For a demonstration of
message debatching, go to
Oracle_Home\integration\orabpel\samples\tutorials\121.FileAdapter\Debatching
2.4.1.3 Reading Delimited Content Files
This demonstration shows how the file adapter reads CSV-formatted entries in an
address book, transforms the file contents using XSLT, and stores the data in a
fixed-length formatted file. For a demonstration of delimited content files, go to
Oracle_Home\integration\orabpel\samples\tutorials\121.FileAdapter\FlatStructure
2.4.1.4 Reading Positional (Fixed Length) Content Files
This demonstration shows how the file adapter reads CSV-formatted entries in an
address book, transforms the file contents using XSLT, and stores the data in a
fixed-length formatted file. For a positional (fixed length) demonstration, go to
Oracle_Home\integration\orabpel\samples\tutorials\121.FileAdapter\FlatStructure
2.4.1.5 File Writing
A simple file writing demonstration is provided as part of the larger tutorial described
in Section 2.4.1.1, &quot;File Reading&quot;. In the file writing portion, you configure the file
adapter to write an outbound purchase order acknowledgment to a file in a directory.
See Oracle BPEL Process Manager Order Booking Tutorial for a demonstration that
uses the file writing functionality of the file adapter.
2.4.2 FTP Adapter Use Case
This demonstration shows how the file adapter processes native data containing
multiple messages defined in a custom format. The native data instance contains an
invoice and purchase order.
In the inbound direction, the FTP adapter retrieves a remote file, processes the file, and
publishes the invoice and purchase order separately to the debatching BPEL process.
2-40 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Summary
In the outbound direction, only purchase orders are generated. The debatching BPEL
process transforms an invoice to a purchase order. The purchase record is simply
copied over. All purchase orders are then written in separate remote output files. For
an FTP demonstration, go to
Oracle_Home\integration\orabpel\samples\tutorials\129.FTPAdapter\FTPDebatching
2.5 Summary
This chapter describes how you use the file and FTP adapters so that your BPEL
process can exchange (read and write) files (both XML and non-XML) on local file
systems and remote file systems (through FTP).
Oracle Application Server Adapter for Files/FTP 2-41
Summary
2-42 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
3
Oracle Application Server Adapter for
Advanced Queuing
This chapter describes how to use the Oracle Application Server Adapter for
Advanced Queuing (AQ adapter), which enables a BPEL process to interact with a
queue.
This chapter contains the following topics:
■
Section 3.1, &quot;Introduction to the AQ Adapter&quot;
■
Section 3.2, &quot;AQ Adapter Features&quot;
■
Section 3.3, &quot;Use Cases for the AQ Adapter&quot;
■
Section 3.4, &quot;Summary&quot;
3.1 Introduction to the AQ Adapter
Oracle Streams Advanced Queuing (AQ) provides a flexible mechanism for
bidirectional, asynchronous communication between participating applications.
Because advanced queues are an Oracle database feature, they are scalable and
reliable. Backup and recovery (including any-point-in-time recovery), logging,
transactional services, and system management are all inherent features of the
database and, therefore, advanced queues. Multiple queues can also service a single
application, partitioning messages in a variety of ways and providing another level of
scalability through load balancing. See Oracle Streams Advanced Queuing User’s Guide
and Reference for more information.
3.2 AQ Adapter Features
The AQ adapter is both a producer and consumer of AQ messages. The enqueue
operation is exposed as a JCA outbound interaction. The dequeue operation is exposed
as a JCA inbound interaction.
The AQ adapter supports both ADT (Oracle object type) and RAW queues as
payloads. It also supports extracting a payload from one ADT member column. The
AQ adapter does not support the AQ XML type.
The AQ adapter supports headers for enqueue and dequeue options. Headers are
comprised of an AQ header and a payload header. The AQ header consists of the
standard message properties that are present in every queue.
You access the AQ adapter from the Adapter Configuration Wizard, which you use to
browse queues and expose the underlying metadata as a WSDL with JCA extensions.
For AQ adapter samples, go to
Oracle Application Server Adapter for Advanced Queuing 3-1
AQ Adapter Features
Oracle_Home\integration\orabpel\samples\tutorials\124.AQAdapter
3.2.1 Enqueue-Specific Features (Message Production)
The AQ adapter supports the following features of Oracle Streams AQ:
■
Correlation identifier
In the Adapter Configuration Wizard, you can specify a correlation identifier
when defining an enqueue operation, which you use to retrieve specific messages.
■
Multiconsumer queue
In Oracle Streams AQ, more than one consumer can process and consume a single
message. To use this feature, you must create multiconsumer queues and enqueue
the messages into these queues. In this configuration, a single message can be
consumed by more than one AQ consumer (dequeue operation), either through
the default subscription list or with an override recipient list. Under this scenario,
a message remains in the queue until it is consumed by all of its intended
consumer agents. The AQ adapter enqueue header enables you to specify the
override recipient list (string values separated by commas) that can retrieve
messages from a queue. All consumers that are added as subscribers to a
multiconsumer queue must have unique values for the Recipient parameter.
This means that two subscribers cannot have the same values for the NAME,
ADDRESS, and PROTOCOL attributes.
■
Message priority
If you specify the priority of enqueued messages, then the messages are dequeued
in priority order. If two messages have the same priority, the order in which they
are dequeued is determined by the enqueue time. You can also create a first-in,
first-out (FIFO) priority queue by specifying the enqueue time priority as the sort
order of the messages. This priority is a property of the AQ adapter enqueue
header. The enqueue time is set automatically by the underlying AQ application.
Here is an example of how to create the FIFO queue:
EXECUTE DBMS_AQADM.CREATE_QUEUE_TABLE( \
queue_table =&gt; 'OE_orders_pr_mqtab', \
sort_list =&gt;'priority,enq_time', \
comment =&gt; 'Order Entry Priority \
MultiConsumer Orders queue table',\
multiple_consumers =&gt; TRUE, \
queue_payload_type =&gt; 'BOLADM.order_typ', \
compatible =&gt; '8.1', \
primary_instance =&gt; 2, \
secondary_instance =&gt; 1);
EXECUTE DBMS_AQADM.CREATE_QUEUE ( \
queue_name =&gt; 'OE_bookedorders_que', \
queue_table =&gt; 'OE_orders_pr_mqtab');
■
Time specification and scheduling
In Oracle Streams AQ, you can specify a delay interval and an expiration interval.
The delay interval determines when an enqueued message is marked as available
to the dequeuers after the message is enqueued. When a message is enqueued
with a delay time set, the message is marked in a WAIT state. Messages in a WAIT
state are masked from the default dequeue calls. The expiration time property is
used to specify an expiration time and the message is automatically moved to an
exception queue if the message is not consumed before its expiration. The delay
3-2 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
AQ Adapter Features
interval, expiration time, and exception queue property are properties of the AQ
adapter enqueue header.
3.2.2 Dequeue and Enqueue Features
Oracle Streams AQ provides the following dequeuing options:
■
Poll option
■
Notification option
The poll option involves processing the messages as they arrive and polling repeatedly
for messages. The AQ adapter supports a polling mechanism for consuming AQ
messages.
The AQ adapter supports the following features of Oracle Streams AQ:
■
Multiconsumer queue
The AQ adapter can retrieve messages from a multiconsumer queue.
■
Navigation of messages for dequeuing
Messages do not have to be dequeued in the same order in which they were
enqueued. You can use a correlation identifier to specify dequeue order. The
Adapter Configuration Wizard defines the correlation ID for the dequeue
operation.
■
Retries with delays
The number of retries is a property of the AQ adapter dequeue header. If the
number of retries exceeds the limit, the message is moved to an exception queue
that you specify. The exception queue is a property of the AQ adapter enqueue
header.
■
Rule-based subscription
Oracle Streams AQ provides content-based message filtering and subject-based
message filtering. A rule defines one or more consumers interest in subscribing to
messages that conform to that rule. For a subject-based rule, you specify a Boolean
expression using syntax similar to the WHERE clause of a SQL query. This Boolean
expression can include conditions on message properties (currently priority and
correlation ID), user data properties (object payloads only), and functions (as
specified in the WHERE clause of a SQL query).
■
AQ headers
Table 3–1 summarizes the AQ header properties for the enqueue and dequeue
operations.
Oracle Application Server Adapter for Advanced Queuing 3-3
AQ Adapter Features
Table 3–1
AQ Header Message Properties
Message
Property
Datatype
Default If Not
Specified
Description
Include in
Message
Header for
Enqueue
Priority
Integer
1
Yes
Yes
Priority of the message.
Include in
Message
Header for
Dequeue
A smaller number indicates a higher
priority.
Delay
Integer
0
The number of seconds after which
the message is available for
dequeuing
Yes
No
Expiration
Integer
-1 (never
expires)
The number of seconds before the
message expires. This parameter is
an offset from the delay.
Yes
No
Correlation
String
-
User-assigned correlation ID
Yes
Yes
RecipientList
String
-
The list of recipients for this
message, separated by commas.
This overrides RecipientList in
the InteractionSpec
Yes
No
ExceptionQueue String
-
The exception queue name
Yes
No
EnqueueTime
String
-
The time at which the message was
enqueued
No
Yes
MessageID
String
-
The hexadecimal representation of
the message ID
No
Yes
OrigMessageId
String
-
The hexadecimal representation of
the original message ID
No
Yes
Attempts
Integer
-
The number of failed attempts at
dequeuing the message
No
Yes
See Oracle Application Server Adapter Concepts for information on AQ adapter
architecture, adapter integration with Oracle BPEL Process Manager, and adapter
deployments.
3.2.3 Supported ADT Payload Types
The AQ adapter supports the following RAW types:
■
BLOB
■
CHAR
■
CLOB
■
DATE
■
DECIMAL
■
DOUBLE PRECISON
■
FLOAT
■
INTEGER
■
NUMBER
■
REAL
■
SMALLINT
3-4 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
AQ Adapter Features
■
TIMESTAMP
■
VARCHAR2
In addition, the primitive types, varrays of objects, or primitives are also supported.
If choosing a payload field instead of the whole ADT, choose only one of the following
datatypes as the payload field:
■
CLOB, either XSD or opaque schema
■
VARCHAR2, either XSD or opaque schema
■
BLOB, opaque schema only
3.2.4 Native Format Builder Wizard
JDeveloper BPEL Designer provides the Native Format Builder Wizard to define XSD
files of various formats, including for the AQ RAW payload. See Chapter 6, &quot;Native
Format Builder Wizard&quot; for more information. For Native Format Builder examples, go
to
Oracle_Home\integration\orabpel\samples\tutorials\124.AQAdapter\
RawQueuePayloadUsingNativeFormat
Payload Schema
The payload schemas depend on the payload type. In the whole ADT case, the schema
is completely generated by the Adapter Configuration Wizard. In the ADT with BLOB
selected as the payload case, an opaque schema must be used, which is defined as:
&lt;element name=&quot;opaqueElement&quot; type=&quot;base64Binary&quot; /&gt;
In all other cases, you can either provide a schema or use an opaque schema, as shown
in Table 3–2.
Table 3–2
Payload Schema
Payload Type
Supported Schema
RAW
User-provided schema or opaque schema
Whole ADT
Must use a schema generated by the Adapter
Configuration Wizard, which is based on the queue
structure
ADT with VARCHAR2 picked as payload
User-provided schema or opaque schema
ADT with CLOB picked as payload
user-provided schema or opaque schema
User-provided schema or opaque schema
ADT with BLOB picked as payload opaque
schema
Opaque schema
If you do not have an XSD, but the payload data is formatted in some way (for
example, in a comma-separated value (CSV) format), then the Native Format Builder
Wizard can be used to generate an appropriate XSD. The Adapter Configuration
Wizard is integrated with the Native Format Builder Wizard. In the Adapter
Configuration Wizard - Messages window, click Define Schema for Native Format to
access the Native Format Builder Wizard.
Oracle Application Server Adapter for Advanced Queuing 3-5
Use Cases for the AQ Adapter
3.3 Use Cases for the AQ Adapter
The following use cases include a general walkthrough of the Adapter Configuration
Wizard, followed by examples of how you modify the general procedure in different
situations. Each example shows relevant parts of the generated WSDL file.
3.3.1 Adapter Configuration Wizard Walkthrough
This procedure shows how to use the Adapter Configuration Wizard. The example
creates an adapter service that enqueues messages to the CUSTOMER_IN_QUEUE
queue, with a payload that is one field within the CUSTOMER_TYPE object (the
customer’s e-mail address), and with a user-defined schema.
1.
Drag and drop a PartnerLink activity onto the right side of the designer window.
2.
Select Define Adapter Service (third icon) in the Create Partner Link window.
3.
Select AQ Adapter from the Adapter Type window and click Next.
4.
Enter a service name (this name can be anything) and click Next.
3-6 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the AQ Adapter
5.
Select a database connection and click Next. This name must typically match with
your connector-factory location setting in the oc4j-ra.xml file. Ensure
that you restart Oracle BPEL Server after changing the oc4j-ra.xml file.
6.
Select Enqueue, to send messages to a queue, or Dequeue, to receive messages
from a queue. Click Next.
Oracle Application Server Adapter for Advanced Queuing 3-7
Use Cases for the AQ Adapter
7.
Select a database schema or click Browse to browse for the correct schema. The
&lt;Default Schema&gt; selection is the schema owned by the connection user. For
example, if you connect as scott/tiger, then the &lt;Default Schema&gt; is scott; you
see all of the queues of scott. In general, you only see schemas and queues that the
connection user has the privileges to see. For this example, Browse is selected.
The Select Queue window appears. Note that all types is selected. This means that
all available types display: RAW, OBJECT, and special OBJECT (XML Gateway,
Business Event System, and B2B Integration) queues.
3-8 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the AQ Adapter
8.
Select the correct queue and click OK.
9.
Verify that you have selected the database schema and click Next.
Oracle Application Server Adapter for Advanced Queuing 3-9
Use Cases for the AQ Adapter
10. Enter an optional correlation ID from 1 to 30 characters in length and click Next.
This is used to identify messages that can be retrieved at a later time by a dequeue
activity using the same correlation ID.
The value to enter is agreed upon between the enqueuing sender and the
dequeuing receiver for asynchronous conversations. The correlation ID maps to an
AQ header. Correlation IDs in the inbound direction enable you to be selective
about the message to dequeue. This field is optional. If you do not enter a value,
all messages in the queue are processed.
If you enter a value for the Correlation ID in the outbound direction, all outbound
messages have the correct ID set to the value entered. You can override this value
on a per message basis in the correlation field of the outbound header.
11. Select the business payload, either the entire object, or just one field within the
object:
■
■
If you select Whole Object CUSTOMER_TYPE, click Next and go to Step 14.
The message schema is automatically generated.
If you select Field within the Object, the business payload is contained in a
single field in the object. Specify the correct file name, either by entering the
3-10 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the AQ Adapter
name or by browsing for it using the Browse button. The field containing the
payload you select must be a CLOB, BLOB, or VARCHAR2.
The Access to non-payload fields also needed check box is available as an
option. Select this check box if you need to specify additional information in a
header field that is separate from the object payload. This selection generates
the additional header schema but does not automatically create the header
variable. Header variable is an optional field used to pass the header to and
from the partnerlink. This header variable is created in the adapter tab of
corresponding receive or invoke activity. See Section 3.3.9, &quot;Header Variables
in JDeveloper BPEL Designer&quot; for more information.
For example, your payload may be a JPG image. You may want to specify a
person’s name in the nonpayload field. This selection generates an additional
header schema file (object_name.xsd, where object_name is the
structured payload object used by the queue). Using this information is
discussed in more detail in Section 3.3.7, &quot;Rule-Based Subscription for
Multiconsumer Queues&quot;.
12. If you select the Browse button, the Select Payload Field window appears. Select
the correct field name and click OK.
Oracle Application Server Adapter for Advanced Queuing
3-11
Use Cases for the AQ Adapter
Figure 3–1 Select Payload Field Window
13. Click Next.
The Messages window appears. These settings define the correct schema for the
message payload.
14. Perform one of the following tasks:
■
■
Check Native format translation is not required (Schema is Opaque), which
disables the rest of the fields.
Click Define Schema for Native Format to start the Native Format Builder
Wizard, if the schema you want to use is not a native schema file. This wizard
guides you through the creation of a native schema file from file formats such
as comma-separated value (CSV), fixed-length, data type description (DTD),
and COBOL Copybook.
3-12 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the AQ Adapter
■
Enter the path for the schema file URL (or browse for the path).
The following steps demonstrate the last option, browsing for the schema file
URL. Click the Browse button.
The Type Chooser window appears, with the Type Explorer navigation tree.
15. Browse the tree and select the appropriate schema type. Click OK.
The Messages window reappears, with the Schema File URL field completed.
Oracle Application Server Adapter for Advanced Queuing
3-13
Use Cases for the AQ Adapter
16. Click Next.
The Finish window appears. This box shows the path and name of the adapter file
that the wizard creates.
17. Click Finish.
The Create Partner Link window appears with the fields completed.
3-14 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the AQ Adapter
18. Click OK.
3.3.1.1 Generated WSDL file
The adapter service generates a WSDL file to serve as the defined adapter interface.
Here is the WSDL file generated by the walkthrough example.
This part of the code segment defines the name of the adapter, and the locations of
various necessary schemas and other definition files.
&lt;definitions
name=&quot;AQ_Example&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/aq/AQ_Example/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/aq/AQ_Example/&quot;
xmlns:plt=&quot;http://schemas.xmlsoap.org/ws/2003/05/partner-link/&quot;
xmlns:jca=&quot;http://xmlns.oracle.com/pcbpel/wsdl/jca/&quot;
xmlns:imp1=&quot;http://xmlns.oracle.com/BPELProcess&quot;
xmlns:hdr=&quot;http://xmlns.oracle.com/pcbpel/adapter/aq/outbound/&quot;
&gt;
This code segment imports the necessary namespaces.
&lt;import namespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/aq/outbound/&quot;
location=&quot;aqAdapterOutboundHeader.wsdl&quot;/&gt;
&lt;import namespace=&quot;http://xmlns.oracle.com/BPELProcess&quot;
location=&quot;bpelprocess.wsdl&quot;/&gt;
This code segment defines the message name and port type for the partner link.
&lt;message name=&quot;BPELProcessProcessRequest_msg&quot;&gt;
&lt;part name=&quot;BPELProcessProcessRequest&quot;
element=&quot;imp1:BPELProcessProcessRequest&quot;/&gt;
&lt;/message&gt;
&lt;portType name=&quot;Enqueue_ptt&quot;&gt;
&lt;operation name=&quot;Enqueue&quot;&gt;
&lt;input message=&quot;tns:BPELProcessProcessRequest_msg&quot;/&gt;
&lt;/operation&gt;
&lt;/portType&gt;
This code segment defines the necessary bindings for the enqueue operation and the
target queue, and identifies the message header.
&lt;binding name=&quot;Enqueue_binding&quot; type=&quot;tns:Enqueue_ptt&quot;&gt;
&lt;jca:binding /&gt;
Oracle Application Server Adapter for Advanced Queuing
3-15
Use Cases for the AQ Adapter
&lt;operation name=&quot;Enqueue&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.aq.outbound.AQEnqueueInteractionSpec&quot;
QueueName=&quot;CUSTOMER_IN_QUEUE&quot;
ObjectFieldName=&quot;CONTACTS.EMAIL&quot;
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;hdr:Header&quot; part=&quot;Header&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
&lt;/binding&gt;
&lt;service name=&quot;AQ_Example&quot;&gt;
&lt;port name=&quot;Enqueue_pt&quot; binding=&quot;tns:Enqueue_binding&quot;&gt;
This last part defines the database connection, the connection factory (as defined in the
oc4j-ra.xml file), and the name and role of the partnerLinkType and portType.
&lt;!--Your runtime connection is declared in
J2EE_HOME/application-deployments/default/DbAdapter/oc4j-ra.xml
These mcf properties here are from your design time connection and
save you from having to edit that file and restart the application server
if eis/AQ/DBConnection2 is missing.
These mcf properties are safe to remove.--&gt;
&lt;jca:address location=&quot;eis/AQ/DBConnection2&quot;
UIConnectionName=&quot;DBConnection2&quot;
ManagedConnectionFactory=&quot;oracle.tip.adapter.aq.AQManagedConnectionFactory&quot;
mcf.ConnectionString=&quot;jdbc:oracle:thin:@144.25.143.7:1521:shashipc&quot;
mcf.UserName=&quot;system&quot;
mcf.Password=&quot;47E570316F19A1CFFD2E2104BF5CA8FE&quot; /&gt;
&lt;/port&gt;
&lt;/service&gt;
&lt;plt:partnerLinkType name=&quot;Enqueue_plt&quot; &gt;
&lt;plt:role name=&quot;Enqueue_role&quot; &gt;
&lt;plt:portType name=&quot;tns:Enqueue_ptt&quot; /&gt;
&lt;/plt:role&gt;
&lt;/plt:partnerLinkType&gt;
&lt;/definitions&gt;
3.3.2 Dequeuing and Enqueuing Object and ADT Payloads
The Adapter Configuration Wizard walkthrough shows how to enqueue one field in
an object. To enqueue or dequeue the entire object as the payload, do the following:
■
■
Select Enqueue or Dequeue in Step 6 in Section 3.3.1, &quot;Adapter Configuration
Wizard Walkthrough&quot;.
Select Whole Object CUSTOMER_TYPE in Step 11 in Section 3.3.1, &quot;Adapter
Configuration Wizard Walkthrough&quot;, and skip to Step 16 in Section 3.3.1, &quot;Adapter
Configuration Wizard Walkthrough&quot;.
The Adapter Configuration Wizard walkthrough provided an enqueue operation
example. For a dequeue operation, the resulting WSDL file differs by including
dequeue information instead of enqueue information, and by lacking an
ObjectFieldName in the jca:Operation section of the code. See the following
code sample for a dequeue operation and compare it to the WSDL file from the general
walkthrough to see these differences:
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&lt;portType name=&quot;Dequeue_ptt&quot;&gt;
&lt;operation name=&quot;Dequeue&quot;&gt;
&lt;input message=&quot;tns:CUSTOMER_TYPE_msg&quot;/&gt;
&lt;/operation&gt;
&lt;/portType&gt;
&lt;binding name=&quot;Dequeue_binding&quot; type=&quot;tns:Dequeue_ptt&quot;&gt;
&lt;pc:inbound_binding /&gt;
&lt;operation name=&quot;Dequeue&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.aq.inbound.AQDequeueActivationSpec&quot;
QueueName=&quot;CUSTOMER_OUT_QUEUE
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;hdr:Header&quot; part=&quot;Header&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
3.3.3 Dequeuing One Column of the Object/ADT Payload
The walkthrough is an example of enqueuing one field or column within an object
payload. To create an adapter that dequeues the one field in an object, the steps are the
same, except that in Step 6 in Section 3.3.1, &quot;Adapter Configuration Wizard
Walkthrough&quot;, select Dequeue.
The following segment of the generated WSDL file specifies that one field, in this case
CONTACTS.EMAIL, is dequeued.
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.aq.inbound.AQDequeueActivationSpec&quot;
QueueName=&quot;CUSTOMER_IN_QUEUE&quot;
ObjectFieldName=&quot;CONTACTS.EMAIL&quot;
OpaqueSchema=&quot;true&quot; &gt;
&lt;/jca:operation&gt;
3.3.4 Processing Large Numbers of Messages
If you want to process large numbers of messages with the AQ adapter, ensure that
you set the cacheWSIFOperation property to true in the bpel.xml file:
&lt;BPELSuitcase&gt;
&lt;BPELProcess id=&quot;HelloWorld&quot; src=&quot;HelloWorld.bpel&quot;&gt;
&lt;partnerLinkBindings&gt;
&lt;partnerLinkBinding name=&quot;Dequeue&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;fileService.wsdl&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
&lt;partnerLinkBinding name=&quot;Enqueue&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;fileWriteService.wsdl&lt;/property&gt;
*&lt;property name=&quot;cacheWSIFOperation&quot;&gt;true&lt;/property&gt;*
&lt;/partnerLinkBinding&gt;
&lt;/partnerLinkBindings&gt;
Set this property through the Property tab of the Create Partner Link or Edit Partner
Link window for the partner link.
3.3.5 Using Correlation ID for Filtering Messages During Dequeue
Perform the following steps to set up an adapter that dequeues messages with a
certain correlation ID only.
Oracle Application Server Adapter for Advanced Queuing
3-17
Use Cases for the AQ Adapter
■
■
Select Dequeue operation in Step 6 in Section 3.3.1, &quot;Adapter Configuration
Wizard Walkthrough&quot;.
Enter the correlation ID in Step 10 in Section 3.3.1, &quot;Adapter Configuration Wizard
Walkthrough&quot;.
The adapter dequeues messages enqueued with that same correlation ID only.
The resulting WSDL file contains the correlation ID:
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.aq.inbound.AQDequeueActivationSpec&quot;
QueueName=&quot;CUSTOMER_OUT_QUEUE&quot;
Correlation=&quot;147&quot;
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
3.3.6 Enqueuing and Dequeuing from Multisubscriber Queues
Multisubscriber queues are accessible by multiple users, and sometimes those users
are only concerned with certain types of messages within the queue. For example, you
may have a multiuser queue for loan applications where loans below $100,000 can be
approved by regular loan-approval staff, whereas loans over $100,000 must be
approved by a supervisor. In this case, the BPEL process can use one adapter to
enqueue loan applications for big loans for supervisors, and another adapter to
enqueue loan applications for smaller loans for regular staff in the same
multisubscriber queue.
If you specify an adapter that enqueues to a multisubscriber queue in Step 8 in
Section 3.3.1, &quot;Adapter Configuration Wizard Walkthrough&quot;, then the Queue
Parameters window also includes a Recipients field with the Correlation Id field, as
shown in Figure 3–2.
Figure 3–2 Queue Parameters Window with Correlation Id Field
Enter the consumer name or names separated by commas that are the intended
recipients for the messages enqueued by the adapter. The message remains in the
queue until all recipients have dequeued the message. If the Recipients field is left
empty, then all currently active consumers are recipients. This field can be overridden
on a per message basis by setting the RecipientList field described in Table 3–1 in
the outbound header.
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The following code is from a WSDL file generated by defining an AQ adapter that
enqueues with a recipient list of Bob:
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.aq.outbound.AQEnqueueInteractionSpec&quot;
QueueName=&quot;IP_IN_QUEUE&quot;
DatabaseSchema=&quot;SCOTT&quot;
ObjectFieldName=&quot;PAYLOAD&quot;
PayloadHeaderRequired=&quot;true&quot;
RecipientList=&quot;Bob&quot;
OpaqueSchema=&quot;true&quot; &gt;
&lt;/jca:operation&gt;
When dequeuing from a multisubscriber queue, the Queue Parameters window
appears, as shown in Figure 3–3.
Figure 3–3 Queue Parameters Window with Consumer Field
The Consumer field is where you specify the consumer name, or the name of the
queue subscriber. This must match the Recipient entry on the enqueue process for the
message to be dequeued. When subscribing to a multiconsumer queue, this field is
required.
The following code is from a WSDL file generated by defining an AQ adapter with a
consumer name:
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.aq.inbound.AQDequeueActivationSpec&quot;
QueueName=&quot;IP_IN_QUEUE&quot;
DatabaseSchema=&quot;SCOTT&quot;
ObjectFieldName=&quot;PAYLOAD&quot;
PayloadHeaderRequired=&quot;true&quot;
Consumer=&quot;Bob&quot;
OpaqueSchema=&quot;true&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;tns:Header_msg&quot; part=&quot;Header&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
Oracle Application Server Adapter for Advanced Queuing
3-19
Use Cases for the AQ Adapter
The Message Selector Rule field enables you to enter rules for accepting messages.
This is discussed in more detail in the following section.
Correlation Id is a number assigned to a message to identify it to specific dequeuers,
as mentioned in Step 10 in Section 3.3.1, &quot;Adapter Configuration Wizard
Walkthrough&quot;. This differs from a subscription rule in that the queue stores messages
with a correlation ID for later use when a subscriber using that correlation ID comes
online.
3.3.7 Rule-Based Subscription for Multiconsumer Queues
When a dequeue is performed from a multisubscriber queue, it is sometimes necessary
to screen the messages and accept only those that meet certain conditions. This
condition may concern header information, as in selecting messages of only priority 1,
or some aspect of the message payload, as in selecting only loan applications above
$100,000.
The Message Selector Rule field appears in Step 10Section 3.3.1, &quot;Adapter
Configuration Wizard Walkthrough&quot; if the selected queue is multisubscriber. Enter a
subscription rule in the form of a Boolean expression using syntax similar to a SQL
WHERE clause, such as priority = 1, or TAB.USER_DATA.amount &gt; 1000. The
adapter only dequeues messages for which this Boolean expression is true.
In Step 11 in Section 3.3.1, &quot;Adapter Configuration Wizard Walkthrough&quot;, Access to
non-payload fields also needed must be checked in order to access header
information.
When this field is checked, the generated WSDL has additional code in the type
section:
&lt;complexType name=&quot;HeaderCType&quot; &gt;
&lt;sequence&gt;
&lt;!-- static header --&gt;
&lt;element name=&quot;QueueHeader&quot; type=&quot;hdr:HeaderType&quot; /&gt;
&lt;!-- payload header --&gt;
&lt;element name=&quot;PayloadHeader&quot; type=&quot;obj1:SERVICE_TYPE&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;element name=&quot;Header&quot; type=&quot;tns:HeaderCType&quot; /&gt;
&lt;element name=&quot;Header&quot; type=&quot;tns:HeaderCType&quot; /&gt;
and the message:
&lt;message name=&quot;Header_msg&quot;&gt;
&lt;part name=&quot;Header&quot; element=&quot;tns:Header&quot;/&gt;
&lt;/message&gt;
Note that PayloadHeader is the type for the whole ADT of the queue. The payload
contains only the chosen payload field. If Access to non-payload fields also needed is
checked, the PayloadHeader contains the whole ADT (including the payload field,
which is also present in the header, but ignored by the adapter).
For working examples of rule-based subscription using header and payload
information, go to
Oracle_Home\integration\orabpel\samples\tutorials\124.AQAdapter\
RuleBasedSubscription_Header
Oracle_Home\integration\orabpel\samples\tutorials\124.AQAdapter\
RuleBasedSubscription_Payload
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3.3.8 Using AQ Headers in a BPEL Process
The entries included in AQ headers are described in Section 3.2.2, &quot;Dequeue and
Enqueue Features&quot;. These header entries are available for composing subscription
rules.
Header information can also be translated into BPEL variables using the Adapter tab
when defining BPEL activities that send or receive messages. This tab enables you to
create header variables for use with the adapters.
You create header variables in invoke, receive, reply, and pick - OnMessage branch
activities. Information passing through header variables is protocol specific.
Note that header information for messages coming from the AQ adapter is different
from header information for corresponding messages flowing into the AQ adapter.
You must use headers if you need to get or set any of these protocol-specific
properties. The following examples describe when you must use headers:
■
■
The AQ adapter enables you to get and set the priority of the message. For
example, you want two different flows in your business process: one for high
priority flows and one for low priority flows. This is possible if you use the
inbound AQ header of the message flowing into the business process. In a similar
fashion, you can set the priority of an outbound message through the outbound
AQ headers.
In a file propagation scenario, files are being moved from one file system to
another using the file adapter. In this case, it is imperative that you maintain file
names across the two systems. Use file headers in both directions and set the file
name in the outbound file header to use the file name in the inbound file header.
3.3.9 Header Variables in JDeveloper BPEL Designer
The following example describes how to create a special header variable in a receive
activity in the outbound direction for the file adapter. You are not restricted to this
direction or adapter type. You can also create this variable in either direction (inbound
or outbound) with other adapter types that include headers (AQ, JMS, and FTP).
1.
Click the flashlight icon to display the Variable Chooser window.
2.
Select the second Variables folder, and click Create to display the Create Variable
window.
3.
Enter a unique and recognizable name in the Name field (for this example,
Variable_Header).
4.
Select Message Type and click the flashlight icon to display the Type Chooser
window.
5.
Expand Message Types, then Project WSDL Files, then service_name.wsdl, and
then Message Types, where service_name is the name you specified for the service
name when you ran the Adapter Configuration Wizard.
A header message named OutboundHeader_msg (or a similar name that includes
Header_msg as part of the name) appears.
6.
If this name appears here, select it and go to Step 8.
7.
If this name does not appear, perform the following additional steps.
a.
Expand Imported WSDL, then fileAdapterOutboundHeader.wsdl (or a
similar name for the direction and adapter type you are using), and then
Message Types.
Oracle Application Server Adapter for Advanced Queuing
3-21
Summary
b.
Select OutboundHeader_msg and go to Step 8.
The name that displays here for the AQ adapter may only be
Header. Select this name. This indicates that the header is static,
because you did not need to select the Access to non-payload fields
check box when configuring the AQ adapter.
Note:
8.
Click OK to close the Type Chooser window, Create Variable window, and
Variable Chooser window.
9.
Complete the setup of the Receive activity.
10. Open the source view of the BPEL process file to view the header variable you
created:
bpelx:headerVariable=&quot;Variable_Header&quot;/&gt;
3.3.10 Configuring a Message Rejection Handler for Data Errors
Rejected messages (that is, messages with data errors) can be directed to a rejected
messages queue, and can also be logged in a directory on the system for later review.
An example of a rejection handler can be found at
Oracle_Home\integration\orabpel\samples\tutorials\124.AQAdapter\
AQMessageRejectionHandler
The readme.txt file in this directory describes a procedure for testing the message
rejection handler.
The Dequeue.wsdl file in this directory includes the following code:
&lt;pc:inbound_binding /&gt;
&lt;operation name=&quot;Dequeue&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.aq.inbound.AQDequeueActivationSpec&quot;
QueueName=&quot;REJECTION_TEST_IN&quot;
DatabaseSchema=&quot;SCOTT&quot;
OpaqueSchema=&quot;false&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;hdr:Header&quot; part=&quot;Header&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
&lt;/binding&gt;
This part of the code directs the errored message to the REJECTION_TEST_IN queue.
3.4 Summary
This chapter discusses Oracle Streams AQ concepts and how to configure various
types of AQ adapters. It also discusses different ways of filtering messages received
from multisubscriber queues, and copying header information into BPEL variables for
decision making.
3-22 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
4
Oracle Application Server Adapter for
Databases
This chapter describes the Oracle Application Server Adapter for Databases (database
adapter), which works in conjunction with Oracle BPEL Process Manager. Support for
stored procedures and functions (for Oracle databases only) is also described.
References to use cases for the database adapter and for stored procedures are
provided.
This chapter contains the following topics:
■
Section 4.1, &quot;Introduction to the Database Adapter&quot;
■
Section 4.2, &quot;Database Adapter Concepts&quot;
■
Section 4.3, &quot;Use Cases for the Database Adapter&quot;
■
Section 4.4, &quot;The Adapter Configuration Wizard&quot;
■
Section 4.5, &quot;Advanced Configuration&quot;
■
Section 4.6, &quot;Third-Party Database Support&quot;
■
Section 4.7, &quot;Stored Procedure and Function Support&quot;
■
■
Section 4.8, &quot;Use Case for Creating and Configuring a Stored Procedure in
JDeveloper BPEL Designer&quot;
Section 4.9, &quot;Summary&quot;
4.1 Introduction to the Database Adapter
The database adapter enables a BPEL process to communicate with Oracle databases
or third-party databases through JDBC. The database adapter service is defined within
a BPEL process partner link using the Adapter Configuration Wizard of Oracle BPEL
Process Manager.
This section contains the following topics:
■
Database Adapter Features
■
Design Overview
4.1.1 Database Adapter Features
The database adapter connects to any relational database. For nonrelational databases
and legacy systems, application and mainframe adapters are available. See Oracle
Application Server Adapter Concepts for information about application and mainframe
adapters.
Oracle Application Server Adapter for Databases 4-1
Introduction to the Database Adapter
To access an existing relational schema, you use the Adapter Configuration Wizard to
do the following:
■
Import a relational schema and map it as an XML schema (XSD)
See Section 4.2.1, &quot;Relational-to-XML Mapping&quot; for more information.
■
Abstract SQL operations such as SELECT, INSERT, and UPDATE as Web services
See Section 4.2.2, &quot;SQL Operations as Web Services&quot; for more information.
While your BPEL process deals with XML and invokes Web services, database rows
and values are queried, inserted, and updated. Unlike other solutions that give you a
way to access data using a fixed schema, stored procedures, streams, or queues, with
the database adapter, you access table data directly and transparently.
Features of the database adapter include:
■
■
■
■
■
Compliance with open standards. The database adapter is an implementation of
the JCA 1.5 connector. Like the other adapters that work with Oracle BPEL Process
Manager, the database adapter is compatible with open standards such as BPEL,
WSIF, and WSDL.
Connectivity to any relational (SQL 92) database using JDBC, or ODBC using the
Sun JdbcOdbcBridge
Ability to map any existing relational schema to XML. The mapping is nonintrusive
to the schema and no changes need to be made to it.
Web services abstraction of SQL operations. The generated WSDL operations are
merge, insert, update, write, delete, select, queryByExample, and
inbound polling, which includes physical delete, logical delete, and
sequencing-based polling strategies.
Leveraging of OracleAS TopLink technology, an advanced object-to-relational
persistence framework. You can access the underlying TopLink project, and use
the OracleAS TopLink Mapping Workbench interface for advanced mapping and
configuration, sequencing, batch and joined relationship reading, batch writing,
parameter binding, statement caching, connection pooling, external transaction
control (JTS and JTA), UnitOfWork for minimal updates, caching, optimistic
locking, advanced query support, and query by example.
See the following for more information:
■
The Oracle BPEL Process Manager forum at
http://forums.oracle.com/forums/forum.jsp?forum=212
■
The OracleAS TopLink forum at
http://forums.oracle.com/forums/forum.jsp?forum=48
This site contains over 2,000 topics, such as implementing native sequencing,
optimistic locking, and JTA-managed connection pools with OracleAS TopLink
You can also access the forums from Oracle Technology Network at
http://www.oracle.com/technology
4.1.2 Design Overview
Figure 4–1 shows how the database adapter interacts with the various design-time and
deployment artifacts.
4-2 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Introduction to the Database Adapter
Figure 4–1 How the Database Adapter Works
Application Server
Connectors
DBAdapter
JNDI
MyDBConnection2
MyDBConnection1
JCA
Adapter
Framework
oc4j-ra.xml
WSIF
Deployment
Oracle
BPEL
Server
JDeveloper
BPEL
Designer
BPEL
Suitcase
BPEL
Artifacts
toplink_mappings.xml
&middot; WSDL
&middot; XSD
Adapter
Configuration
Wizard
Design Time
JDeveloper Project File (.JPR)
OracleAS TopLink Mapping
Workbench Project (.MWP)
The database adapter is a separate JCA 1.5 connector. It is deployed to the application
server during installation, and is configured using oc4j-ra.xml. The oc4j-ra.xml
file is the database adapter deployment descriptor file for Oracle Application Server.
Each entry in oc4j-ra.xml has a Java Naming and Directory Interface (JNDI) name
(location) and session and login properties, and represents a single database and
database adapter instance. The connector is tied to the application server; therefore, it
can be used independently, but any change to oc4j-ra.xml requires restarting the
application server. This file is created by the application server the first time Oracle
BPEL Server comes up. Therefore, in a standalone installation, you do not see this file
unless you start Oracle BPEL Server at least once.
When a business process is executed in Oracle BPEL Process Manager, a Web service
(WSDL) may be invoked (using WSIF) against the database. The jca:address tag in
the WSDL is used to look up an adapter instance, and the jca:operation tag in the
WSDL is used to set up an interaction (outbound) or activation (inbound) with the
database adapter using a JCA interface. The jca:operation tag contains a link to
OracleAS TopLink metadata for executing a query to push XML data to a relational
schema, or vice versa.
The toplink_mappings.xml file and WSDL (with custom jca:operation and
jca:address tags) are created during design time. In JDeveloper BPEL Designer,
you create an endpoint, or partner link, for interacting with the database. Each partner
link has its own WSDL. The WSDL defines all the operations (queries) that can be
performed with that database.
To create the WSDL, you use the Adapter Configuration Wizard, where you import the
relational schema, map it to an XML schema, and define one or more operations. This
produces an XSD representing the schema and a toplink_mappings.xml file.
Oracle Application Server Adapter for Databases 4-3
Database Adapter Concepts
The Adapter Configuration Wizard creates an OracleAS TopLink Mapping Workbench
project (a .mwp file) as part of the JDeveloper BPEL Designer project. Like the
JDeveloper BPEL Designer .jpr file, it enables a user to go back and visually change
mappings or leverage OracleAS TopLink to set advanced properties. Saving the MWP
project does not regenerate toplink_mappings.xml; that is done by running
through the wizard again in edit mode. (No changes are needed; you simply run
through it.)
During deployment, a copy of toplink_mappings.xml is included in the BPEL
suitcase. It is later read by the database adapter and the metadata is cached.
The database adapter is used for relational-to-XML mapping; therefore, no Java class
files are needed. The database adapter generates byte codes for the classes in memory
based on information in the descriptors. You do not compile class files or deal with
class path issues when using the database adapter. The MWP project in the JDeveloper
BPEL Designer project may create Java files as a by-product of using the wizard, but
they are needed at design time only.
4.2 Database Adapter Concepts
This section contains the following topics:
■
Relational-to-XML Mapping
■
SQL Operations as Web Services
4.2.1 Relational-to-XML Mapping
For a flat table or schema, the relational-to-XML mapping is easy to see. Each row in
the table becomes a complex XML element. The value for each column becomes a text
node in the XML element. Both column values and text elements are primitive types.
Table 4–1 shows the structure of the MOVIES table. This table is used in the use cases
described in this chapter. See Section 4.3, &quot;Use Cases for the Database Adapter&quot; for
more information.
Table 4–1
MOVIES Table Description
Name
Null?
Type
TITLE
NOT NULL
VARCHAR2(50)
DIRECTOR
--
VARCHAR2(20)
STARRING
--
VARCHAR2(100)
SYNOPSIS
--
VARCHAR2(255)
GENRE
--
VARCHAR2(70)
RUN_TIME
--
NUMBER
RELEASE_DATE
--
DATE
RATED
--
VARCHAR2(6)
RATING
--
VARCHAR2(4)
VIEWER_RATING
--
VARCHAR2(5)
STATUS
--
VARCHAR2(11)
TOTAL_GROSS
--
NUMBER
DELETED
--
VARCHAR2(5)
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Database Adapter Concepts
Table 4–1 (Cont.) MOVIES Table Description
Name
Null?
Type
SEQUENCENO
--
NUMBER
LAST_UPDATED
--
DATE
The corresponding XML schema definition (XSD) is as follows:
&lt;xs:complexType name=&quot;Movies&quot;&gt;
&lt;xs:sequence&gt;
&lt;xs:element name=&quot;director&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;genre&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;rated&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;rating&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;releaseDate&quot; type=&quot;xs:dateTime&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;runTime&quot; type=&quot;xs:double&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;starring&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;status&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;synopsis&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;title&quot; type=&quot;xs:string&quot;/&gt;
&lt;xs:element name=&quot;totalGross&quot; type=&quot;xs:double&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;viewerRating&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;/xs:sequence&gt;
&lt;/xs:complexType&gt;
As the preceding code example shows, MOVIES is not just a single CLOB or XMLTYPE
column containing the entire XML string. Instead, it is an XML complexType
comprised of elements, each of which corresponds to a column in the MOVIES table.
For flat tables, the relational-to-XML mapping is straightforward.
Table 4–2 and Table 4–3 show the structure of the EMP and DEPT tables, respectively.
These tables are used in the MasterDetail use case. See Section 4.3, &quot;Use Cases for
the Database Adapter&quot; for more information.
Table 4–2
EMP Table Description
Name
Null?
Type
EMPNO
NOT NULL
NUMBER(4)
ENAME
--
VARCHAR2(10)
JOB
--
VARCHAR2(9)
MGR
--
NUMBER(4)
HIREDATE
--
DATE
SAL
--
NUMBER(7,2)
COMM
--
NUMBER(7,2)
DEPTNO
--
NUMBER(2)
Table 4–3
DEPT Table Description
Name
Null?
Type
DEPTNO
NOT NULL
NUMBER(2)
DNAME
--
VARCHAR2(14)
Oracle Application Server Adapter for Databases 4-5
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Table 4–3 (Cont.) DEPT Table Description
Name
Null?
Type
LOC
--
VARCHAR2(13)
As the preceding table definitions show, and as is typical of a normalized relational
schema, an employee’s department number is not stored in the EMP table. Instead,
one of the columns of EMP (DEPTNO) is a foreign key, which equals the primary key
(DEPTNO) in DEPT.
However, the XML equivalent has no similar notion of primary keys and foreign keys.
Consequently, in the resulting XML, the same data is represented in a hierarchy,
thereby preserving the relationships by capturing the detail record inline (embedded)
inside the master.
An XML element can contain elements that are either a primitive type (string,
decimal), or a complex type, that is, another XML element. Therefore, an employee
element can contain a department element.
The corresponding XML shows how the relationship is materialized, or shown inline.
DEPTNO is removed from EMP, and instead you see the DEPT itself.
&lt;EmpCollection&gt;
&lt;Emp&gt;
&lt;comm xsi:nil = &quot;true&quot; &gt;&lt;/comm&gt;
&lt;empno &gt;7369.0&lt;/empno&gt;
&lt;ename &gt;SMITH&lt;/ename&gt;
&lt;hiredate &gt;1980-12-17T00:00:00.000-08:00&lt;/hiredate&gt;
&lt;job &gt;CLERK&lt;/job&gt;
&lt;mgr &gt;7902.0&lt;/mgr
&lt;sal &gt;800.0&lt;/sal&gt;
&lt;dept&gt;
&lt;deptno &gt;20.0&lt;/deptno&gt;
&lt;dname &gt;RESEARCH&lt;/dname&gt;
&lt;loc &gt;DALLAS&lt;/loc&gt;
&lt;/dept&gt;
&lt;/Emp&gt;
...
&lt;/EmpCollection&gt;
Materializing the relationship makes XML human readable, and allows the data to be
sent as one packet of information. No cycles are allowed in the XML; therefore, an
element cannot contain itself. This is handled automatically by the database adapter.
However, you may see duplication (that is, the same XML detail record appearing
more than once under different master records). For example, if a query returned two
employees, both of whom work in the same department, then, in the returned XML,
you see the same DEPT record inline in both the EMP records.
Therefore, when you import tables and map them as XML, it is recommended that you
avoid excessive duplication, although the database adapter does not print an element
inside itself. The database adapter prints the following:
&lt;Emp&gt;
&lt;name&gt;Bob&lt;/name&gt;
&lt;spouse&gt;
&lt;name&gt;June&lt;/name&gt;
&lt;/spouse
&lt;/Emp&gt;
But not:
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&lt;Emp&gt;
&lt;name&gt;Bob&lt;/name&gt;
&lt;spouse&gt;
&lt;name&gt;June&lt;/name&gt;
&lt;spouse&gt;
&lt;name&gt;Bob&lt;/name&gt;
&lt;spouse&gt;
...
&lt;/spouse&gt;
&lt;/spouse&gt;
&lt;/spouse&gt;
&lt;/Emp&gt;
To avoid duplication, you can do the following:
■
■
Import fewer tables. If you import only EMP, then DEPT does not appear.
Remove the relationship between EMP and DEPT in the wizard. This removes the
relationship, but the foreign key column is put back.
In both these cases, the corresponding XML is as follows:
&lt;EmpCollection&gt;
&lt;Emp&gt;
&lt;comm xsi:nil = &quot;true&quot; &gt;&lt;/comm&gt;
&lt;empno &gt;7369.0&lt;/empno&gt;
&lt;ename &gt;SMITH&lt;/ename&gt;
&lt;hiredate &gt;1980-12-17T00:00:00.000-08:00&lt;/hiredate&gt;
&lt;job &gt;CLERK&lt;/job&gt;
&lt;mgr &gt;7902.0&lt;/mgr&gt;
&lt;sal &gt;800.0&lt;/sal&gt;
&lt;deptno &gt;20.0&lt;/deptno&gt;
&lt;/Emp&gt;
...
&lt;/EmpCollection&gt;
Note that one of the two preceding solutions is feasible only if getting back the foreign
key suffices, as opposed to getting back the complete detail record in its entirety.
4.2.1.1 Relational Types to XML Schema Types
Table 4–4 shows how database datatypes are converted to XML primitive types when
you import tables from a database.
Table 4–4
Mapping Database Datatypes to XML Primitive Types
Database Type
XML Type (Prefixed with xs:)
VARCHAR, VARCHAR2, CHAR, NCHAR,
NVARCHAR, NVARCHAR2, MEMO, TEXT,
CHARACTER, CHARACTER VARYING,
UNICHAR, UNIVARCHAR, SYSNAME,
NATIONAL CHARACTER, NATIONAL CHAR,
NATIONAL CHAR VARYING, NCHAR
VARYING, LONG, CLOB, NCLOB,
LONGTEXT, LONGVARCHAR, NTEXT
string
BLOB, BINARY, IMAGE,
LONGVARBINARY, LONG RAW,
VARBINARY, GRAPHIC, VARGRAPHIC,
DBCLOB, BIT VARYING
base64Binary
BIT, NUMBER(1) DEFAULT 0, SMALLINT
DEFAULT 0, SMALLINT DEFAULT 0
boolean
Oracle Application Server Adapter for Databases 4-7
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Table 4–4 (Cont.) Mapping Database Datatypes to XML Primitive Types
Database Type
XML Type (Prefixed with xs:)
TINYINT, BYTE
byte
SHORT, SMALLINT
short
INT, SERIAL
int
INTEGER, BIGINT
integer
NUMBER, NUMERIC, DECIMAL, MONEY,
SMALLMONEY, UNIQUEIDENTIFIER
decimal
FLOAT FLOAT16, FLOAT(16), FLOAT32,
FLOAT(32), DOUBLE, DOUBLE PRECIS,
REAL
double
TIME, DATE, DATETIME, TIMESTAMP,
TIMESTAMP(6), SMALLDATETIME,
TIMESTAMPTZ, TIMESTAMPLTZ,
TIMESTAMP WITH TIME ZONE,
TIMESTAMP WITH LOCAL TIME ZONE
dateTime
Essentially, NUMBER goes to DECIMAL, the most versatile XML datatype for numbers,
VARCHAR2 and CLOB to string, BLOB to base64Binary (to meet the plain-text
requirement), and date types to dateTime.
Any type not mentioned in this discussion defaults to java.lang.String and
xs:string. Timestamp support is basic, because only the xs:dateTime format is
supported. The BFILE, USER DEFINED, OBJECT, STRUCT, VARRAY, and REF types
are specifically not supported.
Because XML is plain text, BLOB and byte values are base 64/MIME encoded so that
they can be passed as character data.
4.2.1.2 Mapping Any Relational Schema to Any XML Schema
The database adapter supports mapping any relational schema on any relational
database to an XML schema, although not any XML schema of your choice, because
the wizard generates the XML schema with no explicit user control over the layout of
the elements. You can control how you map the schema in both the Adapter
Configuration Wizard and later in OracleAS TopLink Mapping Workbench. By pairing
the database adapter with a transformation step, you can map any relational schema to
any XML schema.
4.2.2 SQL Operations as Web Services
After mapping a relational schema as XML, you must also map basic SQL operations
as Web services. Each operation discussed in the following sections has a
corresponding tutorial and readme. It is recommended that you start with these and
try to run one or more as you read this section. As the tutorials demonstrate, some
operations translate directly to the SQL equivalent, while others are more complex.
See the following sections for details:
■
Use Cases for Outbound Invoke Operations
■
Use Cases for Polling Strategies
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4.2.2.1 DML Operations
Data manipulation language (DML) operations align with basic SQL INSERT,
UPDATE, and SELECT operations. SQL INSERT, UPDATE, DELETE, and SELECT are all
mapped to Web service operations of the same name. The WRITE is either an INSERT
or UPDATE, based on the results of an existence check. A distinction is made between
the data manipulation operations—called outbound writes—and the SELECT
operations—called outbound reads. The connection between the Web service and the
SQL for merge (the default for outbound write) and queryByExample are not as
obvious as for basic SQL INSERT, UPDATE, and SELECT.
Merge
Merge first reads the corresponding records in the database, calculates any changes,
and then performs a minimal update. INSERT, UPDATE, and WRITE make the most
sense when you are thinking about a single row and a single table. However, your
XML can contain complex types and map to multiple rows on multiple tables. Imagine
a DEPT with many EMPS, each with an ADDRESS. In this case, you must calculate
which of possibly many rows have changed and which to insert, update, or delete. If a
particular row did not change or only one field changed, the DML calls will be
minimal.
querybyExample
Unlike the SELECT operation, queryByExample does not require a selection criteria
to be specified at design time. Instead, for each invoke, a selection criteria is inferred
from an exemplar input XML record.
For instance, if the output xmlRecord is an employee record, and the input is a
sample xmlRecord with lastName = &quot;Smith&quot;, then on execution, all employees
with a last name of Smith are returned.
A subset of queryByExample is to query by primary key, which can be implemented
by passing in sample XML records where only the primary key attributes are set.
Use queryByExample when you do not want to create a query using the visual query
builder, and want the flexibility of allowing the input record to share the same XML
schema as the output records.
The queryByExample operation is slightly less performant because a new SELECT
needs to be prepared for each execution. This is because the attributes that are set in
the example XML record can vary each time, and therefore the selection criteria varies.
Input xmlRecord:
&lt;Employee&gt;
&lt;id/&gt;
&lt;lastName&gt;Smith&lt;/lastName&gt;
&lt;/Employee&gt;
Output xmlRecord:
&lt;EmployeeCollection&gt;
&lt;Employee&gt;
&lt;id&gt;5&lt;/id&gt;
&lt;lastName&gt;Smith&lt;/lastName&gt;
....
&lt;/Employee&gt;
&lt;Employee&gt;
&lt;id&gt;456&lt;/id&gt;
&lt;lastName&gt;Smith&lt;/lastName&gt;
....
&lt;/Employee&gt;
Oracle Application Server Adapter for Databases 4-9
Database Adapter Concepts
&lt;/EmployeeCollection&gt;
Use Cases for Outbound Invoke Operations
Outbound invoke operations are demonstrated in the following tutorial files:
■
Insert
■
Update
■
Delete
■
Merge
■
SelectAll
■
SelectAllByTitle
■
PureSQLSelect
■
QueryByExample
For these files, go to
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter
4.2.2.2 Polling Strategies
The inbound receive allows you to listen to and detect events and changes in the
database, which in turn can be the initiators of a business process. This is not a
one-time action, but rather an activation. A polling thread is started, which polls a
database table for new rows or events.
Whenever a new row is inserted into the MOVIES table, the polling operation raises it
to Oracle BPEL Process Manager. The stratagem is to poll every record once. The
initial SELECT has to be repeated over time, to receive the rows that exist at the start
and all new rows as they are inserted over time. However, a new row once read is not
likely to be deleted, and therefore can possibly be read repeatedly with each polling.
The various ways to poll for events—called polling strategies, also known as after-read
strategies or publish strategies—range from simple and intrusive to sophisticated and
nonintrusive. Each strategy employs a different solution for the problem of what to do
after reading a row or event so as not to pick it up again in the next polling interval.
The simplest (and most intrusive) solution is to delete the row so that you do not
query it again.
This section discusses the following polling strategies and factors to help you
determine which strategy to employ for a particular situation:
■
Physical Delete
■
Logical Delete
■
Sequencing Table: Last-Read Id
■
Sequencing Table: Last Updated
■
Control Tables
Physical Delete
The physical delete polling strategy polls the database table for records and deletes
them after processing. This strategy can be used to capture events related to INSERT
operations and cannot capture database events related to DELETE and UPDATE
operations on the parent table. This strategy cannot be used to poll child table events.
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This strategy allows multiple adapter instances to go against the same source table.
There is zero data replication.
Preconditions: You must have deletion privileges on the parent and associated child
tables to use the delete polling strategy. Table 4–5 describes the requirements for using
the delete polling strategy.
Table 4–5
Delete Polling Strategy Preconditions
Requirements Met
Conflicts with
Poll for inserts
No delete on source
Shallow delete
1
No updates on source
Cascading delete1
Poll for updates
Minimal SQL
Poll for deletes
Zero data replication
Poll for child updates
Default
--
Allows raw SQL
--
Concurrent polling2
--
1
2
Delete can be configured to delete the top-level row, to cascade all, or to cascade on a case-by-case basis.
Concurrent polling can be configured for both delete and logical delete polling strategies.
Configuration: You can configure the delete polling strategy to delete the top-level
row, to cascade all, or to cascade on a case-by-case basis. This enables deleting only the
parent rows and not the child rows, cascaded deletes, and optional cascaded deletes,
determined on a case-by-case basis. You can configure the polling interval for
performing an event publish at design time.
Delete Cascade Policy: The optional advanced configuration is to specify the cascade
policy of the DELETE. For instance, after polling for an employee with an address and
many phone numbers, the phone numbers are deleted because they are privately
owned (default for one-to-many), but not the address (default for one-to-one). This can
be altered by configuring toplink_mappings.xml, as in the following example:
&lt;database-mapping&gt;
&lt;attribute-name&gt;orders&lt;/attribute-name&gt;
&lt;reference-class&gt;taxonomy.Order&lt;/reference-class&gt;
&lt;is-private-owned&gt;true&lt;/is-private-owned&gt;
You can also configure the activation itself to delete only the top level (master row), or
to delete everything.
A receive operation appears in an inbound WSDL as:
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
…
PollingStrategyName=&quot;DeletePollingStrategy&quot;
DeleteDetailRows=&quot;true&quot;
Logical Delete
The logical delete polling strategy involves updating a special field on each row
processed, and updating the WHERE clause at run time to filter out processed rows. It
mimics logical delete, wherein applications rows are rarely deleted but instead a status
Oracle Application Server Adapter for Databases 4-11
Database Adapter Concepts
column isDeleted is set to true. The status column and the read value must be
provided, but the modified WHERE clause and the post-read update are handled
automatically by the database adapter.
Preconditions: You must have the logical delete privilege or a one-time alter schema
(add column) privilege on the source table. Table 4–6 describes the requirements for
using the logical delete polling strategy.
Table 4–6
Logical Delete Polling Strategy Preconditions
Requirements Met
Conflicts With
Poll for inserts
No updates on source
No delete on source
Poll for deletes
Minimal SQL
--
Zero data replication
--
Minimal configuration
--
Allows raw SQL
--
Poll for updates1
--
Poll for child updates2
--
Concurrent polling3
--
1
2
3
By adding a trigger.
By adding a trigger.
By specifying additional mark unread and reserved values.
Configuration: The logical delete polling strategy requires minimal configuration. You
must specify the mark read column, and the value that indicates a processed record.
A receive operation appears in an inbound WSDL as:
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
…
PollingStrategyName=&quot;LogicalDeletePollingStrategy&quot;
MarkReadField=&quot;STATUS&quot;
MarkReadValue=&quot;PROCESSED&quot;
Given the configuration for logical delete, the database adapter appends the following
WHERE clause to every polling query:
AND (STATUS IS NULL) OR (STATUS &lt;&gt; 'PROCESSED')
Database Configuration: A status column on the table being polled must exist. If it
does not exist already, you can add one to an existing table.
Support for Polling for Updates: Given that rows are not deleted with each read, it is
possible to repetitively read a row multiple times. You should add a trigger to reset the
mark read field whenever a record is changed, as follows:
create trigger Employee_modified
before update on Employee
for each row
begin
:new.STATUS := 'MODIFIED';
end;
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Support for Concurrent Access Polling: Just as a single instance should never process
an event more than once, the same applies to a collection of instances. Therefore,
before processing a record, an instance needs to reserve that record with a unique
value. Again, the status column can be used:
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
…
PollingStrategyName=&quot;LogicalDeletePollingStrategy&quot;
MarkReadField=&quot;STATUS&quot;
MarkUnreadValue=&quot;UNPROCESSED&quot;
MarkReservedValue=&quot;RESERVED-1&quot;
MarkReadValue=&quot;PROCESSED&quot;
The polling query instead looks like the following:
Update EMPLOYE set STATUS = 'RESERVED-1' where (CRITERIA) AND (STATUS =
'UNPROCESSED');
Select … from EMPLOYEE where (CRITERIA) AND (STATUS = 'RESERVED-1');
The after-read UPDATE is faster because it can update all:
Update EMPLOYEE set STATUS = 'PROCESSED' where (CRITERIA) AND (STATUS =
'RESERVED-1');
Sequencing Table: Last-Read Id
This polling strategy involves using a helper table to remember a sequence value. The
source table is not modified; instead, rows that have been read in a separate helper
table are recorded. A sequence value of 1000, for example, means that every record
with a sequence less than that value has already been processed. Because many tables
have some counter field that is always increasing and maintained by triggers or the
application, this strategy can often be used for noninvasive polling. No fields on the
processed row ever need to be modified by the database adapter.
Native sequencing with a preallocation size of 1 can ensure that rows are inserted with
primary keys that are always increasing over time.
This strategy is also called a nondestructive delete because no updates are made to the
source rows, and a sequencing strategy such as the sequence field can be used to
order the rows in a sequence for processing. When the rows are ordered in a line, the
database adapter knows which rows are processed and which are not with a single
unit of information.
Preconditions: You must have a sequencing table or create table privilege on the
source schema. The source table has a column that is monotonically increasing with
every INSERT (an Oracle native sequenced primary key) or UPDATE (the last-modified
timestamp). Table 4–7 describes the requirements for using the sequencing polling
strategy.
Table 4–7
Sequencing Polling Strategy Preconditions
Requirements Met
Conflicts With
Poll for inserts
Poll for deletes
Poll for updates
Allows raw SQL
No delete on source
Concurrent polling
Oracle Application Server Adapter for Databases 4-13
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Table 4–7 (Cont.) Sequencing Polling Strategy Preconditions
Requirements Met
Conflicts With
No updates on source
Poll for child updates
One extra SQL select
--
Zero data replication
--
Moderate configuration
--
Configuration: A separate helper table must be defined. On the source table, you must
specify which column is ever increasing.
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
…
PollingStrategyName=&quot;SequencingPollingStrategy&quot;
SequencingFieldName=&quot;MODIFIED_DATE&quot;
SequencingFieldType=&quot;java.sql.Date&quot;
SequencingTableNameFieldValue=&quot;EMPLOYEE&quot;
SequencingTableName=&quot;SEQUENCING_HELPER&quot;
SequencingTableNameFieldName=&quot;TABLE_NAME&quot;
SequencingTableValueFieldName=&quot;LAST_READ_DATE&quot;
The sequencing field type can be excluded if it is actually a number.
Database Configuration: A sequencing table must be configured once for a given
database. Multiple processes can share the same table. Given the ActivationSpec
specified in the preceding example, the CREATE TABLE command looks as follows:
CREATE TABLE SEQUENCING_HELPER
(
TABLE_NAME VARCHAR2(32) NOT NULL,
LAST_READ_DATE DATE
)
;
Polling for Updates: In the preceding example, the polling is for new objects or
updates, because every time an object is changed, the modified time is updated.
A sample trigger to set the modified time on every insert or update is as follows:
create trigger Employee_modified
before insert or update on Employee
for each row
begin
:new.modified_date := sysdate;
end;
Using a Sequence Number: A sequence number can be used for either insert or
update polling. Native sequencing returns monotonically increasing primary keys, as
long as an increment by 1 is used. You can also use the sequence number of a
materialized view log.
Sequencing Table: Last Updated
This polling strategy involves using a helper table to remember a last_updated
value. A last_updated value of 2005-01-01 12:45:01 000, for example, means
that every record last updated at that time or earlier has already been processed.
Because many tables have rows with a last_updated or creation_time column
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maintained by triggers or the application, this strategy can often be used for
noninvasive polling. No fields on the processed row ever need to be modified by the
database adapter.
This strategy is also called a nondestructive delete because no updates are made to the
source rows, and a sequencing strategy such as the last_updated field can be used
to order the rows in a sequence for processing. When the rows are ordered in a line,
the database adapter knows which rows are processed and which are not with a single
unit of information.
See Sequencing Table: Last-Read Id for information about preconditions and
configuration.
Control Tables
The control table polling strategy involves using a control table to store the primary
key of every row that has yet to be processed. With a natural join between the control
table and the source table (by primary key), polling against the control table is
practically the same as polling against the source table directly. However, an extra
layer of indirection allows the following:
■
■
■
Destructive polling strategies such as the delete polling strategy can be applied to
rows in the control table alone, while shielding any rows in the source table.
Only rows that are meant to be processed have their primary key appear in the
control table. Information that is not in the rows themselves can be used to control
which rows to process (a good WHERE clause may not be enough).
The entire row is not copied to a control table, and any structure under the source
table, such as detail rows, can also be raised without copying.
Streams and materialized view logs make good control tables.
Preconditions: You must have create/alter triggers privilege on the source table.
Table 4–8 describes the requirements for using the control table polling strategy.
Table 4–8
Control Table Polling Strategy Preconditions
Requirements Met
Conflicts With
Poll for inserts
Advanced configuration: the native XML from the database will
have control header, and triggers are required.
Poll for updates
--
Poll for deletes
--
Poll for child updates
Minimal data replication (primary keys are stored in control
table)
No delete on source
--
No updates on source
--
No extra SQL selects
--
Concurrent polling
--
Allows raw SQL
--
Auditing
--
Using triggers, whenever a row is modified, an entry is added to a control table,
containing the name of the master table, and the primary keys. At design time, the
control table is defined to be the root table, with a one-to-one mapping to the master
Oracle Application Server Adapter for Databases 4-15
Database Adapter Concepts
table, based on the matching primary keys. The control table can contain extra control
information, such as a timestamp, and operation type (INSERT, UPDATE, and so on).
The delete polling strategy is useful with this setup. It is important to keep the control
table small, and if the option shouldDeleteDetailRows=&quot;false&quot; is used, then
only the control rows are deleted, giving you a nondestructive delete (the DELETE is
not cascaded to the real tables).
It is possible to reuse the same control table for multiple master tables. In OracleAS
TopLink, you can map the same table to multiple descriptors by mapping the control
table as one abstract class with multiple children. Each child has a unique one-to-one
mapping to a different master table. The advantage of this approach is that you can
specify for each child a class indicator field and value so that you do not need an
explicit WHERE clause for each polling query.
Some sample triggers follow for polling for changes both to a department table and
any of its child employee rows:
CREATE OR REPLACE TRIGGER EVENT_ON_DEPT
AFTER INSERT OR UPDATE ON DEPARTMENT
REFERENCING NEW AS newRow
FOR EACH ROW
DECLARE X NUMBER;
BEGIN
SELECT COUNT(*) INTO X FROM DEPT_CONTROL WHERE (DEPTNO = :newRow.DEPTNO);
IF X = 0 then
insert into DEPT_CONTROL values (:newRow. DEPTNO);
END IF;
END;
CREATE OR REPLACE TRIGGER EVENT_ON_EMPLOYEE
AFTER INSERT OR UPDATE ON EMPLOYEE
REFERENCING OLD AS oldRow NEW AS newRow
FOR EACH ROW
DECLARE X NUMBER;
BEGIN
SELECT COUNT(*) INTO X FROM DEPT_CONTROL WHERE (DEPTNO = :newRow.DEPTNO);
IF X = 0 then
INSERT INTO DEPT_CONTROL VALUES (:newRow.DEPTNO);
END IF;
IF (:oldRow.DEPTNO &lt;&gt; :newRow.DEPTNO) THEN
SELECT COUNT(*) INTO X FROM DEPT_CONTROL WHERE (DEPTNO = :oldRow.DEPTNO);
IF (X = 0) THEN
INSERT INTO DEPT_CONTROL VALUES (:oldRow.DEPTNO);
END IF;
END IF;
END;
Use Cases for Polling Strategies
Polling strategies are demonstrated in the following tutorials:
■
PollingLogicalDeleteStrategy
■
PollingLastUpdatedStrategy
■
PollingLastReadIdStrategy
■
PollingControlTableStrategy
■
MasterDetail (for physical delete polling strategy
For these files, go to
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter
4-16 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Use Cases for the Database Adapter
4.3 Use Cases for the Database Adapter
Using the database adapter is demonstrated in the 122.DBAdapter tutorial. Go to
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter
Table 4–9 shows the database adapter samples that are provided with Oracle BPEL
Process Manager.
Table 4–9
Database Adapter Use Cases
Tutorial Name
Description
Delete
Illustrates the outbound delete operation of the database adapter. An
XML record is passed to the operation and the row in the database with the
same primary key is deleted.
File2StoredProcedure
Describes a simple scenario in which the file adapter is used to provide
instance XML to a stored procedure, ADDEMPLOYEES, which is then
executed. The instance XML provides a value for the parameter of the
stored procedure. The ADDEMPLOYEES procedure must be installed in an
Oracle database (not Oracle Lite).
File2Table
Illustrates the use of an input a native (CSV) data file defined in a custom
format. The input file is a purchase order, which the file adapter processes
and publishes as an XML message to the FIle2Table BPEL process. The
message is transformed to another purchase order format and routed to an
invoke activity.
Insert
Illustrates the outbound insert operation of the database adapter. An
XML record is passed to the operation and inserted into the database as
relational data. (In JDeveloper BPEL Designer, Merge (Insert or Update)
is provided.)
InsertWithCatch
Illustrates the extra steps (based on the Insert tutorial) needed to add
fault handling to your BPEL process.
JPublisherWrapper
Illustrates a workaround for using PL/SQL RECORD types. JPublisher is
used to create a corresponding OBJECT type whose attributes match the
fields of the RECORD, and conversion APIs that convert from RECORD to
OBJECT and vice versa. JPublisher also generates a wrapper procedure (or
function) that accepts the OBJECT and invokes the underlying method
using the conversion APIs in both directions. The invoked methods must
be installed in an in an Oracle database (not Oracle Lite).
MasterDetail
Illustrates how to migrate data from one set of tables to another. The
sample uses the database adapter to read data from one set of tables,
process the data, and write it in to another set of database tables using the
adapter.
Merge
Illustrates the outbound merge operation of the database adapter. An XML
record is passed to the operation and a corresponding row in the database
is either inserted or updated.
PollingControlTableStrategy
Illustrates an inbound polling operation to poll XML instances from the
MOVIES table. When a new row is inserted into the MOVIES table, the
polling operation raises it to Oracle BPEL Process Manager. This strategy
uses a control table to store the primary key of every row that has not yet
been processed. With a natural join between the control table and the
source table (by primary key), polling against the control table is practically
the same as polling against the source table directly.
PollingLastReadIdStrategy
Illustrates an inbound polling operation to poll XML instances from the
MOVIES table. Whenever a new row is inserted into the MOVIES table, the
polling operation raises it to Oracle BPEL Process Manager. This strategy
uses a helper table to remember a sequence value.
Oracle Application Server Adapter for Databases 4-17
The Adapter Configuration Wizard
Table 4–9 (Cont.) Database Adapter Use Cases
Tutorial Name
Description
PollingLastUpdatedStrategy
Illustrates an inbound polling operation to poll XML instances from the
MOVIES table. Whenever a new row is inserted into the MOVIES table, the
polling operation raises it to Oracle BPEL Process Manager. This strategy
involves using a helper table to remember a last_updated value.
PollingLogicalDeleteStrategy Illustrates an inbound polling operation to poll XML instances from the
MOVIES table. Whenever a new row is inserted into the MOVIES table, the
polling operation raises it to Oracle BPEL Process Manager. This strategy
involves updating a special field on each row processed, and updating the
WHERE clause at run time to filter out processed rows.
PureSQLPolling
Illustrates how to poll a table based on a date field.
PureSQLSelect
Illustrates how to bypass the JDeveloper BPEL Designer WHERE-clause
builder to specify arbitrarily complex SQL strings for SELECT operations.
QueryByExample
Illustrates the outbound queryByExample operation of the database
adapter. A SELECT SQL query is built dynamically based on fields set in
an example XML record, and any matching records are returned.
ResultSetConverter
Illustrates a workaround for using REF CURSORs. The solution involves
the use of a Java stored procedure to convert the corresponding
java.sql.ResultSet into a collection (either VARRAY or NESTED
TABLE) of OBJECTs.
SelectAll
Illustrates the outbound SelectAll operation of the database adapter.
With no WHERE clause, all rows in the MOVIES table are returned as XML.
SelectAllByTitle
Illustrates the outbound SelectAllByTitle operation of the database
adapter. The row in the MOVIES table with the selected title is returned as
XML.
Update
Illustrates the outbound Update operation of the database adapter. An
XML record is passed to the operation and the row in the database with the
same primary key is updated. (In JDeveloper BPEL Designer, Merge
(Insert or Update) is provided.)
See Table 4–1 for the structure of the MOVIES table, which is used for many of the use
cases. The readme.txt files that are included with most of the samples provide
instructions.
4.4 The Adapter Configuration Wizard
Using the Adapter Configuration Wizard, you can import tables from the database,
specify relationships spanning multiple tables, generate corresponding XML schema
definitions, and create services to expose the necessary SQL or database operations.
These services are consumed to define partner links that are used in the BPEL process.
You use the Adapter Configuration to both create and edit adapter services.
This section contains the following topics:
■
Starting the Adapter Configuration Wizard
■
Connecting to a Database
■
Selecting the Operation Type
■
Selecting and Importing Tables
■
Defining Primary Keys
■
Creating Relationships
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The Adapter Configuration Wizard
■
Creating the Object Model
■
Defining a WHERE Clause
■
Choosing an After-Read Strategy
■
Internal Processes at Design Time
4.4.1 Starting the Adapter Configuration Wizard
After you create a BPEL project in JDeveloper BPEL Designer, you can start defining a
database adapter. If you lose focus on the window, use alt-tab to get it back.
To launch the Adapter Configuration Wizard:
1.
Ensure that Process Activities is selected in the drop-down list of the Component
Palette section.
2.
Drag and drop a PartnerLink activity onto the right side of the designer window.
3.
Enter a name in the Create Partner Link window.
4.
Click the Define Adapter Service icon to start the Adapter Configuration Wizard.
5.
Click Next on the Welcome window.
6.
Select Database Adapter for the Adapter Service Type and click Next.
See Section 4.4.2, &quot;Connecting to a Database&quot; to continue using the wizard.
4.4.2 Connecting to a Database
Figure 4–2 shows where you select the database connection that you are using with the
service. This is the database from which you import tables to configure the service.
You can provide a Java Naming and Directory Interface (JNDI) name to identify the
database connection, or use the default name that is provided. The JNDI name acts as
a placeholder for the connection used when your service is deployed to Oracle BPEL
Server. This enables you to use different databases for development and production.
The Adapter Configuration Wizard captures the design-time connection in the
generated WSDL as well, to serve as a fallback in case the run-time lookup fails.
Oracle Application Server Adapter for Databases 4-19
The Adapter Configuration Wizard
Figure 4–2 Adapter Configuration Wizard: Service Connection
Note the following:
■
■
In production environments, it is recommended that you add the JNDI entry to the
adapter deployment descriptor (oc4j-ra.xml). This way, the database adapter is
more performant by working in a managed mode. In a nonmanaged mode, the
database adapter uses the design-time connection information.
When you click Next, a connection to the database is attempted. If a connection
cannot be made, you are not able to proceed to the next window, even if you are
editing an existing partner link.
See Section 4.4.3, &quot;Selecting the Operation Type&quot; to continue using the wizard.
4.4.3 Selecting the Operation Type
Figure 4–3 shows where you indicate the type of operation you want to configure for
this service.
Figure 4–3 Adapter Configuration Wizard: Operation Type
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The Adapter Configuration Wizard
The follow operation types are available:
■
Call a Stored Procedure or Function
Select this option if you want the service to execute a stored procedure or function.
See Section 4.7, &quot;Stored Procedure and Function Support&quot; for more information.
■
Perform an Operation on a Table
Select this option for outbound operations. You can select Insert or Update,
Delete, Select, or any combination of the three. These operations loosely translate
to SQL INSERT, UPDATE, DELETE, and SELECT operations. See Section 4.2.2.1,
&quot;DML Operations&quot; for more information.
If you select all three, then after you run the wizard, you see the following
operations in the Operation list of the Invoke window: merge, insert, update,
write, delete, serviceNameSelect, and queryByExample.
Note the following:
■
–
The operations merge, insert, update, and write are created from selecting
Insert or Update.
–
The preceding Invoke window shows the MergeService service name as
part of the Select operation, that is, MergeServiceSelect.
–
The queryByExample operation appears in every WSDL.
–
If the Operation list is initially blank, reselect the partner link and click the
Operation list again.
Poll for New or Changed Records in a Table
Select this option for an inbound operation (that is, an operation that is associated
with a Receive activity). This operation type polls a specified table and returns for
processing any new rows that are added. You can also specify the polling
frequency. See Section 4.2.2.2, &quot;Polling Strategies&quot; for more information.
See Section 4.4.4, &quot;Selecting and Importing Tables&quot; to continue using the wizard.
4.4.4 Selecting and Importing Tables
Figure 4–4 shows where you select the root database table for your operation. If you
are using multiple, related tables, then this is the highest-level table (or highest parent
table) in the relationship tree.
Oracle Application Server Adapter for Databases 4-21
The Adapter Configuration Wizard
Figure 4–4 Adapter Configuration Wizard: Select Table
This window shows all the tables that have been previously imported in the
JDeveloper BPEL Designer project (including tables that were imported for other
partner links). This enables you to reuse configured table definitions across multiple
partner links in a given BPEL project. These are the generated TopLink descriptors.
If the root database table you want to use for this operation has not been previously
imported, you can click Import Tables.... If you want to reimport a table (if the table
structure has changed on the database, for example), import it again. You can then
reimport the table and overwrite the previously configured table definition.
If you reimport a table, you lose any custom relationships you
may have defined on that table, as well as any custom WHERE clauses
(if the table being imported was the root table).
Note:
See Section 4.4.5, &quot;Defining Primary Keys&quot; to continue using the wizard.
4.4.5 Defining Primary Keys
If any of the tables you have imported do not have primary keys defined on the
database, you are prompted to provide a primary key for each one, as shown in
Figure 4–5. You must specify a primary key for all imported tables. You can select
multiple fields if you need to specify a multipart primary key.
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The Adapter Configuration Wizard
Figure 4–5 Adapter Configuration Wizard: Define Primary Keys
The primary key that you specify here is recorded on the offline database table and is
not persisted back to the database schema; the database schema is left untouched.
See Section 4.4.6, &quot;Creating Relationships&quot; to continue using the wizard.
4.4.6 Creating Relationships
Figure 4–6 shows the relationships defined on the root database table and any other
related tables. You can click Create Relationships… to create a new relationship
between two tables, or Remove Relationship to remove it.
Figure 4–6 Adapter Configuration Wizard: Relationships
Note the following regarding creating relationships:
■
If foreign key constraints between tables already exist on the database, then two
relationships are created automatically when you import the tables: a one-to-one
(1:1) from the source table (the table containing the foreign key constraints) to the
target table, as well as a one-to-many (1:M) from the target table to the source
table.
Oracle Application Server Adapter for Databases 4-23
The Adapter Configuration Wizard
■
As Figure 4–6 shows, you see only the relationships that are reachable from the
root database table. If, after removing a relationship, other relationships are no
longer reachable from the root table, then they are not shown in the Relationships
window. Consider the following set of relationships:
A --1:1--&gt; B --1:1--&gt; C --1:M--&gt; D --1:1--&gt; E --1:M--&gt; F
(1)
(2)
(3)
(4)
(5)
If you remove relationship 3, then you see only:
A --1:1--&gt; B
B --1:1--&gt; C
If you remove relationship 2, then you see only:
A --1:1--&gt; B
If you remove relationship 1, you no longer see any relationships.
Figure 4–7 shows where you can create a new relationship.
Figure 4–7 Creating Relationships
To create a new relationship:
1.
Select the parent and child tables.
2.
Select the mapping type (one-to-many, one-to-one, or one-to-one with the foreign
key on the child table).
3.
Associate the foreign key fields to the primary key fields.
4.
Optionally name the relationship (a default name is generated).
Only tables that are reachable from the root table can be
selected as a parent.
Note:
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The Adapter Configuration Wizard
4.4.6.1 What Happens When Relationships Are Created or Removed
When tables are initially imported into the wizard, a TopLink direct-to-field mapping
corresponding to each field in the database is created. Consider the schemas shown in
Figure 4–8 and Figure 4–9:
Figure 4–8 EMPLOYEE Schema
Figure 4–9 ADDRESS Schema
Immediately after importing these two tables, the following mappings in the
Employee descriptor are created:
Employee:
■
id (direct mapping to the ID field, for example, 151)
■
name (direct mapping to the NAME field, for example, Stephen King)
■
addrId (direct mapping to the ADDR_ID field, for example, 345)
When creating a relationship mapping, the direct-to-field mappings to the foreign key
fields are removed and replaced with a single relationship (one-to-one, one-to-many)
mapping. Therefore, after creating a one-to-one relationship between Employee and
Address called homeAddress, the Employee descriptor looks like this:
Employee:
■
id
■
name
■
homeAddress (one-to-one mapping to the ADDRESS table; this attribute now
represents the entire Address object.)
When a relationship is removed, the direct mappings for the foreign keys are restored.
4.4.6.2 Different Types of One-to-One Mappings
The following ways of specifying one-to-one relationships are supported:
■
■
The foreign keys exist on the parent table, as shown in Figure 4–10 and
Figure 4–11.
The foreign keys exist on the child table, as shown in Figure 4–12 and Figure 4–13.
Figure 4–10 Foreign Keys on the Parent Table EMPLOYEE
Figure 4–11 Foreign Keys on the Parent Table ADDRESS
Oracle Application Server Adapter for Databases 4-25
The Adapter Configuration Wizard
Figure 4–12 Foreign Keys on the Child Table EMPLOYEE
Figure 4–13 Foreign Keys on the Child Table ADDRESS
4.4.7 Creating the Object Model
Figure 4–14 shows the object model that is created from the imported table definitions,
including any relationships that you may have defined.
Figure 4–14 Adapter Configuration Wizard: Object Model
If your object model contains self-relationships (for example, the
employee-to-employee manager relationship), then you see these as loops in the tree.
These loops are not present in the XSD. This is the descriptor object model, not the
XSD.
See Section 4.4.8, &quot;Defining a WHERE Clause&quot; to continue using the wizard.
4.4.8 Defining a WHERE Clause
If your service contains a SELECT query (that is, inbound polling services, or
outbound services that contain a SELECT), then you can customize the WHERE clause
of the SELECT statement.
Figure 4–15 shows where you define a WHERE clause for an outbound service. For
inbound services, you do not see the Parameters section.
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The Adapter Configuration Wizard
Figure 4–15 Adapter Configuration Wizard: Define WHERE Clause
Note: The WHERE clause applies to SELECT operations only (that is,
polling for new or changed records, or performing a SELECT
operation on a table). It does not apply to INSERT, UPDATE, and
DELETE operations.
The most basic expression in a WHERE clause can be one of the following three cases,
depending on what the right-hand side (RHS) is:
1.
EMP.ID = 123
In this case, the RHS is a literal value. This RHS is the Literal option shown in
Figure 4–16.
2.
EMP.ADDR_ID = ADDR.ID
In this case, the RHS is another database field. This RHS is the Query Key option
shown in Figure 4–16.
3.
EMP.ID = ?
In this case, the RHS value must be specified at run time. This is the Parameter
option shown in Figure 4–16.
You create the parameters that you need in the WHERE clause by clicking Add before
you move on to build the WHERE clause. To build the WHERE clause, click Edit… to
launch the Expression Builder, as shown in Figure 4–16.
Oracle Application Server Adapter for Databases 4-27
The Adapter Configuration Wizard
Figure 4–16 Expression Builder
See the following for more information:
■
The OracleAS TopLink page on OTN at
http://www.oracle.com/technology/products/ias/toplink/index.html
■
OracleAS TopLink documentation at
http://download.oracle.com/docs/cd/B14099_04/web.htm#toplink
This site contains documentation on configuring expressions using the XPath
Expression Builder.
See Section 4.4.9, &quot;Choosing an After-Read Strategy&quot; to continue using the wizard.
4.4.9 Choosing an After-Read Strategy
When configuring an inbound operation, you have the following options about what
to do after a row or rows have been read:
■
Delete the Rows that Were Read
■
Update a Field in the Table (Logical Delete)
■
Update a Sequencing Table
Figure 4–17 shows these options.
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The Adapter Configuration Wizard
Figure 4–17 Adapter Configuration Wizard: After-Read Strategies
See Section 4.2.2.2, &quot;Polling Strategies&quot; for more information.
4.4.9.1 Delete the Rows that Were Read
With this option, the rows are deleted from the database after they have been read and
processed by the adapter service.
4.4.9.2 Update a Field in the Table (Logical Delete)
With this option, you update a field in the root database table to indicate that the rows
have been read. The WHERE clause of the query is updated automatically after you
complete the configuration, as shown in Figure 4–18.
Figure 4–18 Adapter Configuration Wizard: Logical Delete
Using this approach, your database table looks something like Figure 4–19.
Oracle Application Server Adapter for Databases 4-29
The Adapter Configuration Wizard
Figure 4–19 Updating Fields in a Table
Note the following:
■
■
■
Rows 150 and 153 have been previously read and processed.
At the next polling event, row 152 will be read and processed because it contains
UNPROCESSED in the Status column. Because an explicit Unread Value was
provided, row 151 will not be read.
Row 154 has been flagged as LOCKED and will not be read. You can use this
reserved value if your table is in use by other processes.
4.4.9.3 Update a Sequencing Table
With this option, you are keeping track of the last-read rows in a separate sequence
table. Figure 4–20 shows the information you provide. The WHERE clause of your query
is updated automatically after you complete the configuration.
Figure 4–20 Adapter Configuration Wizard: Last Read IDs Table
Using these settings, your sequence table looks something like Figure 4–21.
Figure 4–21 Updating a Sequence Table
Whenever a row is read, this table is updated with the ID that was just read. Then
when the next polling event occurs, it will search for rows that have an ID greater than
the last-read ID (154).
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The Adapter Configuration Wizard
Typical columns used are event_id, transaction_id, scn (system change
number), id, or last_updated. These columns typically have (monotonically)
increasing values, populated from a sequence number or sysdate.
4.4.10 Internal Processes at Design Time
This section describes happens internally at design time when you use the Adapter
Configuration Wizard to configure the database adapter.
4.4.10.1 Importing Tables
When you import a table, the offline table support of JDeveloper BPEL Designer
creates an offline snapshot of the database table. You can modify this offline version of
the table (for example, you can add a foreign key constraint) without affecting the real
database table. This creates a TopLink descriptor and associated Java source file for the
table, and all the attributes in the descriptor are automapped to their corresponding
database columns. The TopLink descriptor maps the Java class to the offline database
table.
Most typical data columns are mapped as direct-to-field mappings, meaning that the
value in the database column is directly mapped to the attribute. For example, a
SALARY column in the database is mapped to a salary attribute in the object model,
and that attribute contains the value of that column.
If foreign key constraints are already present in the imported tables, then relationship
mappings are autogenerated between the tables. To cover as many scenarios as
possible, two mappings are generated for every foreign key constraint encountered: a
one-to-one mapping from the source table to the target table, and a one-to-many
mapping in the opposite direction. After this is done, you are left with an OracleAS
TopLink Mapping Workbench project in your BPEL project.
The Java classes that are created as part of the descriptor
generation process are never actually deployed with your process or
used at run time. They are present in the design time because
OracleAS TopLink Mapping Workbench is expecting each descriptor
to be associated with a Java class. When your process is deployed, the
mapping metadata is stored in toplink_mappings.xml.
Note:
When you have finished importing tables, you must select a root database table. In
doing so, you are actually selecting which TopLink descriptor stores the autogenerated
query.
4.4.10.2 Creating Relationships
When you create or remove a relationship, you are actually modifying the TopLink
descriptor mappings. Creating a new relationship does the following:
■
Creates a foreign key constraint in the offline database table
■
Adds a one-to-one or one-to-many mapping to the descriptor
■
Removes the direct-to-field mappings to the foreign key fields
Removing a relationship mapping does the following:
■
Removes the one-to-one or one-to-many mapping from the descriptor
■
Removes the foreign key constraint from the offline database table
Oracle Application Server Adapter for Databases 4-31
Advanced Configuration
■
Adds direct-to-field mappings for each foreign key field involved in the
relationship
4.4.10.3 Generating Design-Time Artifacts
The following files are generated:
■
service_name.wsdl—contains the database adapter service definition
■
RootTable.xsd—the XML type definition of the root object
■
toplink_mappings.xml—contains the TopLink mapping metadata for your
BPEL project. It is the only Toplink artifact that is deployed to the server.
4.5 Advanced Configuration
The Adapter Configuration Wizard generates everything you need to use the database
adapter as part of a BPEL process. The following sections describe what happens in
the background when you use the wizard, as well as performance considerations.
This section contains the following topics:
■
The OracleAS TopLink Mapping Workbench Project
■
Relational-to-XML Mappings (toplink_mappings.xml)
■
The Service Definition (WSDL)
■
XML Schema Definition (XSD)
■
Deployment
■
Performance
4.5.1 The OracleAS TopLink Mapping Workbench Project
The wizard works by creating an OracleAS TopLink Mapping Workbench project as
part of your BPEL process project. This TopLink project contains metadata for
mapping a database schema to objects/XML.
The TopLink mappings are stored in two formats. The toplink_mappings.mwp file
is your design time project, which you can edit visually in JDeveloper BPEL Designer.
In contrast, the toplink_mappings.xml file is an XML representation of your
project for use at run time. It is not as easy as editing the .bpel file, where there is
only one file, but you can toggle between Diagram View and Source.
Note the following:
■
■
Rather than edit the toplink_mappings.xml file directly, it is recommended
that you edit the toplink_mappings.mwp visually, and regenerate all the BPEL
artifacts to reflect the changes. You can do this by double-clicking the partner link
to open the Adapter Configuration Wizard in edit mode, and then clicking
through the wizard until you can click Finish. Changing the MWP version does
not update the XML version until you click through the wizard in edit mode.
When running the wizard, any changes that affect the TopLink project (importing
tables, creating or removing mappings, specifying an expression, and so on) are
applied immediately, and are not undone if you cancel the wizard.
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Advanced Configuration
4.5.1.1 Deleting a Descriptor
You cannot remove TopLink descriptors from your project from within the wizard
because removing descriptors can potentially affect other partner links that are sharing
that descriptor. To explicitly remove a descriptor, do the following:
■
Click the TopLink Mappings node under Application Sources under your project
in the Applications - Navigator.
■
Select the descriptor from the tree in the TopLink Mappings - Structure pane.
■
Right-click and select Remove.
4.5.1.2 Returning Partial Objects When Querying
Currently, the Adapter Configuration Wizard does not have built-in support for partial
object reading, that is, returning only specific fields from a table. To achieve this
functionality, you can manually unmap any attributes that you do not want to include
in the result set. Relationship mappings can be unmapped by removing them in the
Relationships window, but direct mappings must be explicitly unmapped on the
TopLink descriptor.
To unmap attributes:
1.
Click the TopLink Mappings node under Application Sources under your project
in the Applications - Navigator.
2.
Select the descriptor containing the attribute you want to unmap from the tree in
the TopLink Mappings - Structure pane.
3.
Right-click the attribute you want to unmap and select Map As &gt; Unmapped.
Oracle Application Server Adapter for Databases 4-33
Advanced Configuration
To remap the attribute, you can do the following:
1.
Click the TopLink Mappings node under Application Sources under your project
in the Applications - Navigator.
2.
Select the descriptor containing the attribute you want to remap from the tree in
the TopLink Mappings - Structure pane.
3.
Right-click the attribute you want to remap and select Map As &gt; Direct to Field.
The TopLink Mappings Editor automatically opens in the JDeveloper BPEL
Designer window.
4.
From Database Field, select the column to which the attribute should be mapped.
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Advanced Configuration
This image shows how to delete a descriptor. The top half of the image shows the
Applications -Navigator window from the JDeveloper. The lower half is the TopLink
Mappings - Structure window. The lower half contains a logical tree of elements. To
the right of these windows, is a window showing the TopLink Mappings. The General
tab is active (the only tab). It contains a field named Database Field containing SSN, an
unselected check box labeled Read Only, an unselected check box labeled Use Method
Accessing with two grayed out fields, Get Method and Set Method. Below this is an
unselected check box labeled Use Default Value When Database Field is Null:, and two
grayed out fields, Type and Value.
***********************************************************************************************
4.5.1.3 Renaming a Mapping
Open the corresponding Java source file and change the name. Then go to the
structure/Mappings pane, and the newly named attribute will appear unmapped.
Right-click it and select Map As to remap it. Then save and regenerate BPEL artifacts.
Keep in mind there are four views, the project view, the table/descriptor view, and the
individual attribute/column view you can access from the TopLink Mappings
structure window. The Java source view is not exactly a TopLink view, but can be
treated as such (when renaming a mapping).
4.5.1.4 Configuring Offline Database Tables
Offline database tables are internal to the OracleAS TopLink Mapping Workbench
project. When you run the wizard, a TopLink project is created. When you import
tables, they are saved as offline table definitions.
You can use the offline database tables to control the micromapping from database
datatype to XML datatype. If you are using a third-party database, you may need to
edit these objects as a workaround. For instance, a serial field on a third-party
database may need to be mapped as Integer so that it is recognized by the wizard
Oracle Application Server Adapter for Databases 4-35
Advanced Configuration
and mapped to xs:integer. See Section A.1.29, &quot;Problems Importing Third-Party
Database Tables&quot; for more information.
Run the wizard once. Then add the following to your JDeveloper BPEL Designer
project: database/schemaName/schemaName.schema
Click the table name (see Figure 4–22) after it is added to your project and change the
types of any of the columns. When you run the wizard again (in edit mode) and click
Finish, the toplink_mappings.xml and XSD file are remapped based on the new
database datatypes.
Figure 4–22 Configuring Offline Tables
Edit the offline table in your JDeveloper BPEL Designer project (see Figure 4–23), not
the table reachable from the ConnectionManager. If you try the latter, the column
types will not be editable, because you are editing the table itself, not an offline
representation of it.
Figure 4–23 Editing Offline Tables
4.5.2 Relational-to-XML Mappings (toplink_mappings.xml)
The database adapter is implemented using OracleAS TopLink. For every business
process, there is an underlying TopLink project, which contains metadata from
mapping a database schema to objects/XML.
In OracleAS TopLink terminology, toplink_mappings.xml is an XML deployment
file. It is generated from a.mwp project file for use at run time. It is recommended that
you edit the project in OracleAS TopLink Mapping Workbench and periodically
refresh toplink_mappings.xml.
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The toplink_mappings.xml file is the run-time version of the OracleAS TopLink
Mapping Workbench project. If you edit this file directly, keep in mind that changes
are not reflected in the design-time toplink_mappings.mwp. Therefore, any changes
are lost when you edit a partner link.
The toplink_mappings.xml file consists of a set of descriptors and mappings.
Descriptors roughly represent a single table in the database schema, and mappings
represent either a single column in the table (direct to field), or a one-to-one or
one-to-many relationship to another table (foreign reference).
When modifying the toplink_mappings.xml file, the recommended approach is to
use OracleAS TopLink Mapping Workbench. The following is an example of a
mapping and a descriptor from a toplink_mappings.xml file.
&lt;mappings&gt;
&lt;database-mapping&gt;
&lt;attribute-name&gt;fname&lt;/attribute-name&gt;
&lt;read-only&gt;false&lt;/read-only&gt;
&lt;field-name&gt;ACTOR.FNAME&lt;/field-name&gt;
&lt;attribute-classification&gt;java.lang.String&lt;/attribute-classification&gt;
&lt;type&gt;oracle.toplink.mappings.DirectToFieldMapping&lt;/type&gt;
&lt;/database-mapping&gt;
and:
&lt;descriptor&gt;
&lt;java-class&gt;BusinessProcess.Actor&lt;/java-class&gt;
&lt;tables&gt;
&lt;table&gt;ACTOR&lt;/table&gt;
&lt;/tables&gt;
&lt;primary-key-fields&gt;
&lt;field&gt;ACTOR.ID&lt;/field&gt;
&lt;field&gt;ACTOR.PROGRAM_ID&lt;/field&gt;
&lt;field&gt;ACTOR.PROGRAM_TYPE&lt;/field&gt;
&lt;/primary-key-fields&gt;
However, the recommended approach is to work from the OracleAS TopLink Mapping
Workbench.
Useful attributes on foreign reference mappings (one-to-one, one-to-many) include:
■
&lt;privately-owned&gt;false/true
If a relationship is privately owned, that means that any target rows are deleted
whenever any source rows are deleted.
This is important for one-to-many relationships because, if you remove Dept
without first deleting its Emp rows, you get a 'child records found' constraint
exception.
If you set privately-owned to true, the database adapter automatically deletes
child records before deleting source rows. In XML everything is assumed to be
privately owned; therefore, this tag is set to true by default.
■
&lt;uses-batch-reading&gt;false/true and &lt;uses-joining&gt;false/true
There are two key optimizations in relation to reading rows with detail rows from
the database.
The following shows the series of selects that OracleAS TopLink uses to read two
department objects (1 and 2), and their employees:
Unoptimized:
Oracle Application Server Adapter for Databases 4-37
Advanced Configuration
SELECT DEPT_COLUMNS FROM DEPT WHERE (subQuery)
SELECT EMP_COLUMNS FROM EMP WHERE (DEPTID = 1)
SELECT EMP_COLUMNS FROM EMP WHERE (DEPTID = 2)
Batch Reading:
SELECT DEPT_COLUMNS FROM DEPT WHERE (subQuery)
SELECT EMP_COLUMNS FROM EMP e, DEPT d WHERE ((subQuery) AND (e.DEPTID =
d.DEPTID))
Joined Reading:
SELECT DEPT_COLUMNS, EMP_COLUMNS FROM DEPT d, EMP e WHERE ((subQuery) AND
(e.DEPTID = d.DEPTID))
Joined reading appears to be the more advanced, but only works for one-to-one
mappings currently, and the detail record cannot be null because the join is not an
outer join.
Therefore, by default, batch reading is enabled, but not joined reading. This can
easily be reversed to improve performance.
If you specify raw SQL for a query, that query cannot be a batched or joined read.
To use batched or joined reading, you must not use raw SQL.
You can set other properties in toplink_mappings.xml.
4.5.3 The Service Definition (WSDL)
The WSDL generated by the Adapter Configuration Wizard defines the adapter
service. This WSDL specifies the various operations exposed by the service. Table 4–10
specifies the operations that are generated based on your selection in the wizard.
Table 4–10
WSDL Operations Generated by the Adapter Configuration Wizard
Adapter Configuration
Wizard Selection
Generated WSDL Operation
Insert or Update
insert, update, merge, write, queryByExample
Delete
delete, queryByExample
Select
serviceNameSelect, queryByExample
Poll for New or Changed
Records in a Table
receive
Of the preceding operations, receive is associated with a BPEL receive activity,
whereas the rest of the preceding operations are associated with a BPEL invoke
activity.
See Section 4.2.2, &quot;SQL Operations as Web Services&quot; for more information on the
preceding operations.
This section discusses the database adapter-specific parameters in the generated
WSDL. This is intended for advanced users who want information about all the
parameters in the generated WSDL.
A given database adapter service is meant for either continuous polling of a data
source (translates to a JCA Activation) or for performing a one-time DML operation
(translates to a JCA Interaction). In the continuous polling case, the WSDL contains
only one receive operation with a corresponding activation spec defined in the binding
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section. In the one-time DML operation case, the WSDL contains multiple operations,
all of which have a corresponding interaction spec defined in the binding section.
Table 4–11 specifies the JCA Activation/Interaction spec associated with each of the
preceding operations:
Table 4–11
Operation and JCA Activation/Interaction Spec
WSDL Operation
JCA Activation/Interaction Spec
insert, update, merge,
write, delete
oracle.tip.adapter.db.DBWriteInteractionSpec
select, queryByExample
oracle.tip.adapter.db.DBReadInteractionSpec
receive
oracle.tip.adapter.db.DBActivationSpec
4.5.3.1 DBWriteInteractionSpec
The following code example shows the binding section corresponding to the movie
service to write to the Movies table:
&lt;binding name=&quot;movie_binding&quot; type=&quot;tns:movie_ptt&quot;&gt;
&lt;jca:binding /&gt;
&lt;operation name=&quot;merge&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBWriteInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
DmlType=&quot;merge&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;operation name=&quot;insert&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBWriteInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
DmlType=&quot;insert&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;operation name=&quot;update&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBWriteInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
DmlType=&quot;update&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;operation name=&quot;write&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBWriteInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
DmlType=&quot;write&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;operation name=&quot;delete&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBWriteInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
DmlType=&quot;delete&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
Oracle Application Server Adapter for Databases 4-39
Advanced Configuration
&lt;input/&gt;
&lt;/binding&gt;
Table 4–12 describes the DBWriteInteractionSpec parameters:
Table 4–12
DBWriteInteractionSpec Parameters
Parameter
Description
Mechanism to Update
DescriptorName
Indirect reference to the root database table that
is being written to
Wizard updates automatically. Do
not modify this manually.
DmlType
The DML type of the operation (insert,
update, merge, write)
Wizard updates automatically. Do
not modify this manually.
MappingsMetaDataURL
Reference to file containing relational-to-XML
mappings (toplink_mappings.xml)
Wizard updates automatically. Do
not modify this manually.
4.5.3.2 DBReadInteractionSpec
The following code example corresponds to the movie service to query the Movies
table:
&lt;binding name=&quot;movie_binding&quot; type=&quot;tns:movie_ptt&quot;&gt;
&lt;jca:binding /&gt;
&lt;operation name=&quot;movieSelect&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBReadInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
QueryName=&quot;movieSelect&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;operation name=&quot;queryByExample&quot;&gt;
&lt;jca:operation
InteractionSpec=&quot;oracle.tip.adapter.db.DBReadInteractionSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
IsQueryByExample=&quot;true&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;/binding&gt;
Table 4–13 describes the DBReadInteractionSpec parameters:
Table 4–13
DBReadInteractionSpec Parameters
Parameter
Description
Mechanism to Update
DescriptorName
Indirect reference to the root database table that
is being queried
Wizard updates automatically. Do
not modify this manually.
QueryName
Reference to the SELECT query inside the
relational-to-XML mappings file
Wizard updates automatically. Do
not modify this manually.
IsQueryByExample
Indicates if this query is a queryByExample or
not
Wizard updates automatically. Do
not modify this manually. This
parameter is needed for
queryByExample only.
MappingsMetaDataURL
Reference to file containing relational-to-XML
mappings (toplink_mappings.xml)
Wizard updates automatically. Do
not modify this manually.
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4.5.3.3 DBActivationSpec
The following code example shows the binding section corresponding to the
MovieFetch service to poll the Movies table using DeletePollingStrategy:
&lt;binding name=&quot;MovieFetch_binding&quot; type=&quot;tns:MovieFetch_ptt&quot;&gt;
&lt;pc:inbound_binding/&gt;
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
DescriptorName=&quot;BPELProcess1.Movies&quot;
QueryName=&quot;MovieFetch&quot;
PollingStrategyName=&quot;DeletePollingStrategy&quot;
MaxRaiseSize=&quot;1&quot;
MaxTransactionSize=&quot;unlimited&quot;
PollingInterval=&quot;5&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;/binding&gt;
Table 4–14 describes the DBActivationSpec parameters:
Table 4–14
DBActivationSpec Parameters
Parameter
Description
Mechanism to Update
DescriptorName
Indirect reference to the root database table that
is being queried
Wizard updates automatically. Do
not modify this manually.
QueryName
Reference to the SELECT query inside the
relational-to-XML mappings file
Wizard updates automatically. Do
not modify this manually.
PollingStrategyName
Indicates the polling strategy to be used
Wizard updates automatically. Do
not modify this manually.
PollingInterval
Indicates how often to poll the root database
table for new events (in seconds)
Wizard updates automatically. Do
not modify this manually.
MaxRaiseSize
Indicates the maximum number of database
records that can be raised at a time to the BPEL
engine
Modify manually in the generated
WSDL.
MaxTransactionSize
Indicates the maximum number of rows to
process as part of one database transaction
Modify manually in the generated
WSDL.
MappingsMetaDataURL
Reference to file containing relational-to-XML
mappings (toplink_mappings.xml)
Wizard updates automatically. Do
not modify this manually.
The following code example is the binding section corresponding to the MovieFetch
service to poll the Movies table using LogicalDeletePollingStrategy:
&lt;binding name=&quot;PollingLogicalDeleteService_binding&quot;
type=&quot;tns:PollingLogicalDeleteService_ptt&quot;&gt;
&lt;pc:inbound_binding/&gt;
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
DescriptorName=&quot;PollingLogicalDeleteStrategy.Movies&quot;
QueryName=&quot;PollingLogicalDeleteService&quot;
PollingStrategyName=&quot;LogicalDeletePollingStrategy&quot;
MarkReadFieldName=&quot;DELETED&quot;
MarkReadValue=&quot;TRUE&quot;
MarkReservedValue=&quot;MINE&quot;
MarkUnreadValue=&quot;FALSE&quot;
Oracle Application Server Adapter for Databases 4-41
Advanced Configuration
MaxRaiseSize=&quot;1&quot;
MaxTransactionSize=&quot;unlimited&quot;
PollingInterval=&quot;10&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;/binding&gt;
Table 4–15 describes all of the additional DBActivationSpec parameters for
LogicalDeletePollingStrategy:
Table 4–15
DBActivationSpec Parameters for LogicalDeletePollingStrategy
Parameter
Description
Mechanism to Update
MarkReadFieldName
Specifies the database column to use to
mark the row as read
Wizard updates automatically. Do not
modify this manually.
MarkReadValue
Specifies the value to which the database
column is set to mark the row as read
Wizard updates automatically. Do not
modify this manually.
MarkReservedValue
Specifies the value to which the database
column is set to mark the row as reserved.
This parameter is optional. You can use it
when multiple adapter instances are
providing the same database adapter
service.
Wizard updates automatically. Do not
modify this manually.
MarkUnreadValue
Specifies the value to which the database
column is set to mark the row as unread.
This parameter is optional. Use it when you
want to indicate specific rows that the
database adapter must process.
Wizard updates automatically. Do not
modify this manually.
The following code example shows the binding section corresponding to the
MovieFetch service to poll the Movies table using
SequencingPollingStrategy:
&lt;binding name=&quot;PollingLastReadIdStrategyService_binding&quot;
type=&quot;tns:PollingLastReadIdStrategyService_ptt&quot;&gt;
&lt;pc:inbound_binding/&gt;
&lt;operation name=&quot;receive&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.db.DBActivationSpec&quot;
DescriptorName=&quot;PollingLastReadIdStrategy.Movies&quot;
QueryName=&quot;PollingLastReadIdStrategyService&quot;
PollingStrategyName=&quot;SequencingPollingStrategy&quot;
SequencingFieldName=&quot;SEQUENCENO&quot;
SequencingTableNameFieldValue=&quot;MOVIES&quot;
SequencingTableName=&quot;PC_SEQUENCING&quot;
SequencingTableNameFieldName=&quot;TABLE_NAME&quot;
SequencingTableValueFieldName=&quot;LAST_READ_ID&quot;
MaxRaiseSize=&quot;1&quot;
MaxTransactionSize=&quot;unlimited&quot;
PollingInterval=&quot;10&quot;
MappingsMetaDataURL=&quot;toplink_mappings.xml&quot; /&gt;
&lt;input/&gt;
&lt;/operation&gt;
&lt;/binding&gt;
Table 4–16 describes all of the additional DBActivationSpec parameters for
SequencingPollingStrategy:
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Table 4–16
DBActivationSpec Parameters for SequencingPollingStrategy
Parameter
Description
Mechanism to update
SequencingFieldName
Specifies the database column that is
monotonically increasing
Wizard updates automatically. Do
not modify this manually.
SequencingFieldType
Specifies the type of the database
column that is monotonically
increasing. This parameter is
optional. Use it if the type is not
NUMBER.
Wizard updates automatically. Do
not modify this manually.
SequencingTableNameFieldValue Specifies the root database table for
this polling query
Wizard updates automatically. Do
not modify this manually.
SequencingTableName
Name of the database table that is
serving as the helper table
Wizard updates automatically. Do
not modify this manually.
SequencingTableNameFieldName
Specifies the database column in the
helper table that is used to store the
root database table name
Wizard updates automatically. Do
not modify this manually.
SequencingTableValueFieldName Specifies the database column in the
helper table that is used to store the
sequence number of the last
processed row in the root database
table name
Wizard updates automatically. Do
not modify this manually.
See Section 4.5.5, &quot;Deployment&quot; for details about the service section of the WSDL.
4.5.4 XML Schema Definition (XSD)
From a database schema, the wizard generates an XML schema representation of that
object. This schema is used by the BPEL process.
For example, from the table named Movies, the following is generated:
&lt;?xml version = '1.0' encoding = 'UTF-8'?&gt;
&lt;xs:schema
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/db/top/SelectAllByTitle&quot;
xmlns=&quot;http://xmlns.oracle.com/pcbpel/adapter/db/top/SelectAllByTitle&quot;
elementFormDefault=&quot;unqualified&quot; attributeFormDefault=&quot;unqualified&quot;
xmlns:xs=&quot;http://www.w3.org/2001/XMLSchema&quot;&gt;
&lt;xs:element name=&quot;MoviesCollection&quot; type=&quot;MoviesCollection&quot;/&gt;
&lt;xs:element name=&quot;Movies&quot; type=&quot;Movies&quot;/&gt;
&lt;xs:complexType name=&quot;MoviesCollection&quot;&gt;
&lt;xs:sequence&gt;
&lt;xs:element name=&quot;Movies&quot; type=&quot;Movies&quot; minOccurs=&quot;0&quot;
maxOccurs=&quot;unbounded&quot;/&gt;
&lt;/xs:sequence&gt;
&lt;/xs:complexType&gt;
&lt;xs:complexType name=&quot;Movies&quot;&gt;
&lt;xs:sequence&gt;
&lt;xs:element name=&quot;director&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;genre&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;rated&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;rating&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;releaseDate&quot; type=&quot;xs:dateTime&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;runTime&quot; type=&quot;xs:double&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
Oracle Application Server Adapter for Databases 4-43
Advanced Configuration
&lt;xs:element name=&quot;starring&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;status&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;synopsis&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;title&quot; type=&quot;xs:string&quot;/&gt;
&lt;xs:element name=&quot;totalGross&quot; type=&quot;xs:double&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;xs:element name=&quot;viewerRating&quot; type=&quot;xs:string&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;/xs:sequence&gt;
&lt;/xs:complexType&gt;
&lt;xs:element name=&quot;findAllInputParameters&quot; type=&quot;findAll&quot;/&gt;
&lt;xs:complexType name=&quot;findAll&quot;&gt;
&lt;xs:sequence/&gt;
&lt;/xs:complexType&gt;
&lt;xs:element name=&quot;SelectAllByTitleServiceSelect_titleInputParameters&quot;
type=&quot;SelectAllByTitleServiceSelect_title&quot;/&gt;
&lt;xs:complexType name=&quot;SelectAllByTitleServiceSelect_title&quot;&gt;
&lt;xs:sequence&gt;
&lt;xs:element name=&quot;title&quot; type=&quot;xs:string&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xs:sequence&gt;
&lt;/xs:complexType&gt;
&lt;/xs:schema&gt;
This is a generated file. Changes to this file do not affect the behavior of the adapter. It
is a declaration of the XML file that the database adapter produces and consumes.
You may need to modify the XSD file if you update the underlying toplink_
mappings.xml. In that case, regenerate both files by rerunning the Adapter
Configuration Wizard in edit mode.
The generated XSD flags all elements as optional with minOccurs=0, except for the
primary key attributes, which are mandatory.
Do not manually modify the XSD file to configure the database
adapter.
Note:
4.5.5 Deployment
After you define the database adapter service and complete the design of your BPEL
process, you compile and deploy the process to Oracle BPEL Server. In the
Applications Navigator of JDeveloper BPEL Designer, right-click the BPEL project and
select Deploy. See Chapter 19, &quot;BPEL Process Deployment and Domain Management&quot;
in Oracle BPEL Process Manager Developer’s Guide for more information about
deployment.
4.5.5.1 Design-Time and Run-time Connection Information
During design time, you specified connection information in the Database Server
JNDI Name field of the Adapter Configuration Wizard, as shown in Figure 4–2,
&quot;Adapter Configuration Wizard: Service Connection&quot;. When a WSDL file is generated
as part of creating a BPEL process, this connection information is specified in the
WSDL.
At run time, if you want to change databases, for example, from a design-time or
development database to a test or production database, then you no longer put the
connection information in the WSDL. Instead, you specify the connection information
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in either the oc4j-ra.xml file or the data-sources.xml file. The following
sections describe how to specify connection information:
■
Specifying Connection Information in the WSDL File
■
Specifying Connection Information in the oc4j-ra.xml File
■
Specifying Connection Information in the data-sources.xml File (Recommended)
See the following sections for other connection information:
■
How the Database Adapter Gets Connection Information
■
Connection Pooling for performance information and connection pooling
Specifying Connection Information in the WSDL File
Use the WSDL file for connection information (specified in the mcf.* parameters)
only if your design-time and run-time databases are the same and if you are not
working in a production environment. (This is referred to as nonmanaged mode.) The
WSDL is provided as a convenience for development and test purposes, but is not
suitable for production. The database adapter uses connection information in the
WSDL at run time if you have not created the corresponding JNDI entry in the
oc4j-ra.xml file.
Example 4–1 shows database connection information specified in the mcf.* properties
of the WSDL.
Example 4–1 WSDL Code Example Showing Database Connection Information in the
mcf.* Properties
&lt;!-- Your runtime connection is declared in
J2EE_HOME/application-deployments/default/DbAdapter/oc4j-ra.xml.
These 'mcf' properties here are from your design time connection and save you from
having to edit that file and restart the application server if eis/DB/scott is
missing.
These 'mcf' properties are safe to remove.
--&gt;
&lt;service name=&quot;get&quot;&gt;
&lt;port name=&quot;get_pt&quot; binding=&quot;tns:get_binding&quot;&gt;
&lt;jca:address location=&quot;eis/DB/scott&quot;
UIConnectionName=&quot;scott&quot;
ManagedConnectionFactory=&quot;oracle.tip.adapter.db.DBManagedConnectionFactory&quot;
mcf.DriverClassName=&quot;oracle.jdbc.driver.OracleDriver&quot;
mcf.PlatformClassName=&quot;oracle.toplink.oraclespecific.Oracle9Platform&quot;
mcf.ConnectionString=&quot;jdbc:oracle:thin:@mypc.home.com:1521:orcl&quot;
mcf.UserName=&quot;scott&quot;
mcf.Password=&quot;7347B141D0FBCEA077C118A5138D02BE&quot;
/&gt;
&lt;/port&gt;
&lt;/service&gt;
When the database adapter uses connection information
specified in the WSDL, you have no connection pooling.
Note:
Specifying Connection Information in the oc4j-ra.xml File
Use the oc4j-ra.xml file for connection information when your design-time and
run-time databases are different. When you specify database connection information
in the oc4j-ra.xml file, the database adapter does not use connection information
from the WSDL. This is local connection pooling information, as opposed to pointing
Oracle Application Server Adapter for Databases 4-45
Advanced Configuration
to an external connection pool. This is also referred to as managed mode using
TopLink connection pooling.
Example 4–2 shows database connection information in the oc4j-ra.xml file.
Example 4–2 oc4j-ra.xml Code Example Showing Database Connection Information
&lt;connector-factory location=&quot;eis/DB/scott&quot; connector-name=&quot;Database Adapter&quot;&gt;
&lt;config-property name=&quot;driverClassName&quot; value=&quot;oracle.jdbc.driver.OracleDriver&quot;/&gt;
&lt;config-property name=&quot;connectionString&quot;
value=&quot;jdbc:oracle:thin:@localhost:1521:orcl&quot;/&gt;
&lt;config-property name=&quot;userName&quot; value=&quot;scott&quot;/&gt;
&lt;config-property name=&quot;password&quot; value=&quot;tiger&quot;/&gt;
&lt;config-property name=&quot;minConnections&quot; value=&quot;5&quot;/&gt;
&lt;config-property name=&quot;maxConnections&quot; value=&quot;5&quot;/&gt;
&lt;config-property name=&quot;minReadConnections&quot; value=&quot;1&quot;/&gt;
&lt;config-property name=&quot;maxReadConnections&quot; value=&quot;1&quot;/&gt;
&lt;config-property name=&quot;usesExternalConnectionPooling&quot; value=&quot;false&quot;/&gt;
&lt;config-property name=&quot;dataSourceName&quot; value=&quot;&quot;/&gt;
&lt;config-property name=&quot;usesExternalTransactionController&quot; value=&quot;false&quot;/&gt;
&lt;config-property name=&quot;platformClassName&quot;
value=&quot;oracle.toplink.internal.databaseaccess.Oracle9Platform&quot;/&gt;
&lt;config-property name=&quot;usesNativeSequencing&quot; value=&quot;true&quot;/&gt;
&lt;config-property name=&quot;sequencePreallocationSize&quot; value=&quot;50&quot;/&gt;
&lt;config-property name=&quot;tableQualifier&quot; value=&quot;&quot;/&gt;
&lt;/connector-factory&gt;
For the Oracle BPEL Process Manager for Developers installation, oc4j-ra.xml is
located at
Oracle_Home\integration\orabpel\system\appserver\oc4j\j2ee\home\
application-deployments\default\DbAdapter\oc4j-ra.xml
For the Oracle BPEL Process Manager for OracleAS Middle Tier installation,
oc4j-ra.xml is located at
Oracle_Home\j2ee\OC4J_BPEL\application-deployments\default\DBAdapter\oc4j-ra.xml
Connection information in the oc4j-ra.xml file is not generated by the Adapter
Configuration Wizard. You must manually update this file and restart Oracle BPEL
Server for updates to oc4j-ra.xml to take effect.
When the database adapter uses connection information
specified in the oc4j-ra.xml file, you are using TopLink connection
pooling.
Note:
See the following topics for more information about the oc4j-ra.xml file:
■
Section 4.5.5.2, &quot;Properties of the oc4j-ra.xml File&quot;
■
Section 4.5.5.3, &quot;Advanced Properties of the oc4j-ra.xml File&quot;
Specifying Connection Information in the data-sources.xml File (Recommended)
Use the data-sources.xml file for connection information for all production
scenarios, particularly high availability environments. Oracle recommends that you
create an entry for connection information in the data-sources.xml file. This
means pointing to a connection pool managed by the application server, which is
preferred over native (TopLink) connection pooling.
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Example 4–3 shows database connection information in the data-sources.xml file.
Example 4–3 data-sources.xml Code Example Showing Database Connection
Information
[data-source class=&quot;com.evermind.sql.DriverManagerDataSource&quot;
name=&quot;LocalDataSource&quot;
location=&quot;loc/LocalDataSource&quot;
xa-location=&quot;LocalDataSource&quot;
ejb-location=&quot;jdbc/LocalDataSource&quot;
connection-driver=&quot;oracle.jdbc.OracleDriver&quot;
max-connections=&quot;50&quot;
min-connections=&quot;10&quot;
connection-retry-interval=&quot;30&quot;
max-connect-attempts=&quot;10&quot;
url=&quot;jdbc:oracle:thin:scott/tiger@localhost:1521:orcl&quot;/]
Your entry in the oc4j-ra.xml file becomes a pointer to this data source.
Example 4–4 shows the oc4j-ra.xml file pointing to connection information in the
data-sources.xml file (Example 4–3) when non-JTA/non-XA pooling is used.
Example 4–4 oc4j-ra.xml Code Example Pointing to Connection Information in the
data-sources.xml File (non-JTA/non-XA Pooling)
[connector-factory location=&quot;eis/DB/loc/LocalDataSource&quot; connector-name=&quot;Database
Adapter&quot;]
[config-property name=&quot;usesExternalConnectionPooling&quot; value=&quot;true&quot;/]
[config-property name=&quot;dataSourceName&quot; value=&quot;loc/LocalDataSource&quot;/]
[config-property name=&quot;usesExternalTransactionController&quot; value=&quot;false&quot;/]
[config-property name=&quot;platformClassName&quot;
value=&quot;oracle.toplink.internal.databaseaccess.Oracle9Platform&quot;/]
[config-property name=&quot;usesNativeSequencing&quot; value=&quot;true&quot;/]
[config-property name=&quot;sequencePreallocationSize&quot; value=&quot;50&quot;/]
[/connector-factory]
In Example 4–4, dataSourceName matches the location attribute in
data-sources.xml, and usesExternalTransactionController is false.
Example 4–5 shows the oc4j-ra.xml file pointing to connection information in the
data-sources.xml file (Example 4–3) when JTA/XA pooling is used.
Example 4–5 oc4j-ra.xml Code Example Pointing to Connection Information in the
data-sources.xml File (JTA/XA Pooling)
[connector-factory location=&quot;eis/DB/LocalDataSource&quot; connector-name=&quot;Database
Adapter&quot;]
[config-property name=&quot;usesExternalConnectionPooling&quot; value=&quot;true&quot;/]
[config-property name=&quot;dataSourceName&quot; value=&quot;jdbc/LocalDataSource&quot;/]
[config-property name=&quot;usesExternalTransactionController&quot; value=&quot;true&quot;/]
[config-property name=&quot;platformClassName&quot;
value=&quot;oracle.toplink.internal.databaseaccess.Oracle9Platform&quot;/]
[config-property name=&quot;usesNativeSequencing&quot; value=&quot;true&quot;/]
[config-property name=&quot;sequencePreallocationSize&quot; value=&quot;50&quot;/]
[/connector-factory]
In Example 4–5, dataSourceName matches the ejb-location attribute in
data-sources.xml, and usesExternalTransactionController is true.
Oracle Application Server Adapter for Databases 4-47
Advanced Configuration
When the database adapter uses connection information
specified in the data-sources.xml file, you are using application
server connection pooling.
Note:
How the Database Adapter Gets Connection Information
Figure 4–24 shows how the database adapter gets connection information from the
three possible sources: the WSDL file, the oc4j-ra.xml file, or the
data-sources.xml file, as described in the preceding sections.
Figure 4–24 How the Database Adapter Gets Connection Information
ENTER
Database adapter looks
for connection
information
Does
WSDL have JNDI
location to look up in
oc4j_ra.xml?
No
Get connection information
from WSDL
(mcf*properties)
Yes
Does
oc4j_ra.xml have a
corresponding
entry?
No
Yes
Does
oc4j_ra.xml point to
data-sources.xml for connection
information?
No
Get connection information
from oc4j_ra.xml
Yes
Get connection information
from data_sources.xml
(recommended approach)
EXIT
4.5.5.2 Properties of the oc4j-ra.xml File
The properties specified in the connection factory use OracleAS TopLink by translating
to roughly 40 properties of an underlying TopLink login object. This is the equivalent
of the OracleAS TopLink sessions.xml file.
Table 4–17, Table 4–18, and Table 4–19 show the configuration properties available to
configure the run-time connection.
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Table 4–17
Run-Time Connection Configuration Properties
Parameter
Description
Mechanism to Update
driverClassName
Name of the Java class for the JDBC
driver being used
See Section 4.6, &quot;Third-Party
Database Support&quot; for more
information.
connectionString
JDBC Connection String
See Section 4.6, &quot;Third-Party
Database Support&quot; for more
information.
userName
Database login name
-
password
Database login password
-
Table 4–18
OracleAS TopLink Connection Pooling for the Database Adapter
Parameter
Description
Mechanism to Update
minConnections
Minimum number of connections in
the pool
This is to use the adapter's local
Toplink connection pool.
maxConnections
Maximum number of connections in
the pool
This is to use the adapter's local
Toplink connection pool.
minReadConnections
Minimum number of read-only
connections in the pool
This is to use the adapter's local
Toplink connection pool.
maxReadConnections
Maximum number of read-only
connections in the pool
This is to use the adapter's local
Toplink connection pool.
Table 4–19
Parameters Used in Application Server Connection Pooling
Parameter
Description
Mechanism to Update
dataSourceName
Points to the data source
configured in the application
server
Use the application server
connection pooling, for
example:
java:comp/env/jdbc/myDa
taSourceName
usesExternalConnectionPooling
Use the application server
connection pooling
Use the application server
connection pooling.
usesExternalTransactionController Indicates if the application server's
connection pool is managed or not
Use the application server
connection pooling.
platformClassName
Indicates the database platform
(see Table 4–20)
-
usesNativeSequencing
Indicates whether or not to use
native database sequencing
-
sequencePreallocationSize
This corresponds to the
INCREMENT BY value on the
native database sequence
-
tableQualifier
Schema name to be used if the
table names are not qualified in
toplink_mappings.xml
Obsolete, because the wizard
qualifies table names as it
generates them.
If the application server connection pool is used, then most connection properties in
this class are managed elsewhere.
Table 4–20 shows the advanced properties, which are database platform variables. Set
the DatabasePlatform name to one of the following variables.
Oracle Application Server Adapter for Databases 4-49
Advanced Configuration
Table 4–20
Database Platform Names
Database
PlatformClassName
Oracle9+ (including 10g)
oracle.toplink.oraclespecific.Oracle9Platform
Oracle8
oracle.toplink.internal.databaseaccess.Oracle8Platform
Oracle7
oracle.toplink.internal.databaseaccess.OraclePlatform
DB2
oracle.toplink.internal.databaseaccess.DB2Platform
Informix
oracle.toplink.internal.databaseaccess.InformixPlatform
Sybase
oracle.toplink.internal.databaseaccess.SybasePlatform
SQLServer
oracle.toplink.internal.databaseaccess.SQLServerPlatform
Any other database
oracle.toplink.internal.databaseaccess.DatabasePlatform
4.5.5.3 Advanced Properties of the oc4j-ra.xml File
The following properties are configurable by using the managed connection factory
entry in the oc4j-ra.xml file:
String connectionString
String userName
String password
String encryptionClassName
Integer minConnections
Integer maxConnections
Boolean useReadConnectionPool
Integer minReadConnections
Integer maxReadConnections
String dataSourceName
String driverClassName
Integer cursorCode
String databaseName
String driverURLHeader
Integer maxBatchWritingSize
String platformClassName
String sequenceCounterFieldName
String sequenceNameFieldName
Integer sequencePreallocationSize
String sequenceTableName
String serverName
Boolean shouldBindAllParameters
Boolean shouldCacheAllStatements
Boolean shouldIgnoreCaseOnFieldComparisons
Boolean shouldForceFieldNamesToUpperCase
Boolean shouldOptimizeDataConversion
Boolean shouldTrimStrings
Integer statementCacheSize
Integer stringBindingSize
String tableQualifier
Integer transactionIsolation
Boolean usesBatchWriting
Boolean usesByteArrayBinding
Boolean usesDirectDriverConnect
Boolean usesExternalConnectionPooling
Boolean usesExternalTransactionController
Boolean usesJDBCBatchWriting
Boolean usesNativeSequencing
Boolean usesNativeSQL
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Boolean usesStreamsForBinding
Boolean usesStringBinding
The following properties appear in the
oracle.toplink.sessions.DatabaseLogin object.
See OracleAS TopLink API reference information on DBConnectionFactory
Javadoc and DatabaseLogin Javadoc at
http://download-east.oracle.com/docs/cd/B10464_02/web.904/b10491/index.html
To configure any of the preceding properties:
1.
Add the following to the ra.xml file:
&lt;config-property&gt;
&lt;config-property-name&gt;usesJDBCBatchWriting&lt;/config-property-name&gt;
&lt;config-property-type&gt;java.lang.Boolean&lt;/config-property-type&gt;
&lt;config-property-value&gt;true&lt;/config-property-value&gt;
&lt;/config-property&gt;
For Oracle BPEL Process Manager for Developers, ra.xml is at
Oracle_Home\integration\orabpel\system\appserver\oc4j\j2ee\home\connectors\
DbAdapter\DbAdapter\META-INF\ra.xml
For Oracle BPEL Process Manager for OracleAS Middle Tier, ra.xml is at
Oracle_Home\j2ee\OC4J_BPEL\connectors\DbAdapter\DbAdapter\META-INF\ra.xml
2.
Add the following to the oc4j-ra.xml file:
&lt;config-property name=&quot;usesJDBCBatchWriting&quot; value=&quot;true&quot;/&gt;
3.
Restart Oracle BPEL Server for the changes to take effect.
You can also update the default oc4j-ra.xml and ra.xml files before you deploy
the database adapter. This way, you deploy once and do not need to restart the
application server.
4.5.6 Performance
The database adapter is preconfigured with many performance optimizations. You
can, however, make some changes to reduce the number of round trips to the
database, as described in the following sections.
4.5.6.1 Outbound Write: Should You Use Merge, Write, or Insert?
If you run through the Adapter Configuration Wizard and select Insert or Update, you
get a WSDL with the following operations: merge (default), insert, update, and
write. The latter three call TopLink queries of the same name, avoiding advanced
functionality that you may not need for straightforward scenarios. You can make the
change by double-clicking an invoke activity and selecting a different operation. The
merge is the most expensive, followed by the write and then the insert.
The merge first does a read of every element and calculates what has changed. If a
row has not changed, it is not updated. The extra reads (for existence) and the complex
change calculation add considerable overhead. For simple cases, this can be safely
avoided; that is, if you changed only two columns, it does not matter if you update all
five anyway. For complex cases, however, the opposite is true. If you have a master
record with 100 details, but you changed only two columns on the master and two on
one detail, the merge updates those four columns on two rows. A write does a write
Oracle Application Server Adapter for Databases 4-51
Advanced Configuration
of every column in all 101 rows. Also, the merge may appear slower, but can actually
relieve pressure on the database by minimizing the number of writes.
The insert operation is the most performant because it uses no existence check and
has no extra overhead. You have no reads, only writes. If you know that you will do an
insert most of the time, use insert, and catch a unique key constraint SQL exception
inside your BPEL process, which can then perform a merge or update instead. Use
merge if you have a mix of new and existing objects (for instance, a master row
containing several new details). The update is similar to insert.
To monitor performance, you can enable debug logging and then watch the SQL for
various inputs.
4.5.6.2 The OracleAS TopLink Cache: When Should You Use It?
Caching is an important performance feature of OracleAS TopLink. However, issues
with stale data can be difficult to manage. By default, the database adapter uses a
WeakIdentityMap, meaning a cache is used only to resolve cyclical references, and
entries are quickly reclaimed by the Java virtual machine. If you have no cycles (and
you ideally should not for XML), you can switch to a NoIdentityMap. The TopLink
default is a SoftCacheWeakIdentityMap. This means that the most frequently used
rows in the database are more likely to appear already in the cache.
For a knowledge article on caching, go to
http://www.oracle.com/technology/tech/java/newsletter/november04.html
4.5.6.3 Existence Checking
One method of performance optimization for merge is to eliminate check database
existence checking. The existence check is marginally better if the row is new, because
only the primary key is returned, not the entire row. But, due to the nature of merge, if
the existence check passes, the entire row must be read anyway to calculate what
changed. Therefore, for every row to be updated, you see one extra round trip to the
database during merge.
It is always safe to use check cache on the root descriptor/table and any child tables if
A is master and B is a privately owned child. If A does not exist, B cannot exist. And if
A exists, all its Bs are loaded as part of reading A; therefore, check cache works.
4.5.6.4 Inbound Polling: maxRaiseSize
This parameter indicates the maximum number of XML records that can be raised at a
time to the BPEL engine. For example, if you set maxRaiseSize = 10, then 10
database records are raised at one time. On read (inbound) you can set
maxRaiseSize = 0 (unbounded), meaning that if you read 1000 rows, you will
create one XML with 1000 elements, which is passed through a single Oracle BPEL
Process Manager instance. A merge on the outbound side can then take all 1000 in one
group and write them all at once with batch writing.
Use the maxRaiseSize parameter for publishing large payloads.
4.5.6.5 Inbound Polling: Choosing a Polling Strategy
Your choice of polling strategy matters too. Avoid the delete polling strategy because it
must individually delete each row. The sequencing polling strategy can destroy 1000
rows with a single update to a helper table.
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4.5.6.6 Relationship Reading (Batch Attribute and Joined Attribute Reading)
Batch reading of one-to-many and one-to-one relationships is on by default. You can
also use joined reading for one-to-one relationships instead, which may offer a slight
improvement.
4.5.6.7 Connection Pooling
You can configure a connection pool if using either the adapter's local connection pool
or an application server data source. Creating a database connection is an expensive
operation. Ideally you should only exceed the minConnections under heavy loads.
If you are consistently using more connections than that at once, then you may spend a
lot of time setting up and tearing down connections. The database adapter also has a
read connection pool. A read connection is more performant because there is no limit
on how many users can use one connection for reading at the same time, a feature that
most JDBC drivers support.
4.5.6.8 Inbound Distributed Polling
The database adapter is designed to scale to the number of unprocessed rows on the
database. By default, it is possible to read and process one database row or 10,000 with
as little as three round trips to the database. The most expensive operations are limited
to a constant number. You can also configure the database adapter for a distributed
environment.
Load Balancing: MaxTransactionSize and Pessimistic Locking
You can set a simple option that enables the database adapter to work safely in a
distributed environment by making the first polling query acquire locks, as shown in
Figure 4–25. In SQL terms, you are making your first SELECT into a SELECT...FOR
UPDATE.
Figure 4–25 Acquiring Locks
The behavior of all polling strategies is as follows:
1.
Read all unprocessed rows.
2.
Process those rows.
3.
Commit.
If any adapter instance performs step 1 while another instance is between steps 1 and
3, then duplicate processing occurs. Acquiring locks on the first operation and
Oracle Application Server Adapter for Databases 4-53
Third-Party Database Support
releasing them in commit solves this problem, and may naturally order the polling
instances.
To enable pessimistic locking, run through the wizard once to create an inbound
polling query. In the Applications Navigator window, expand Application Sources,
then TopLink, and click TopLink Mappings. In the Structure window, click the table
name. In Diagram View, click the following tabs: TopLink Mappings, Queries,
Named Queries, Options; then the Advanced… button, and then Pessimistic Locking
and Acquire Locks. You see the message, &quot;Set Refresh Identity Map Results?&quot; If a
query uses pessimistic locking, it must refresh the identity map results. Click OK
when you see the message, &quot;Would you like us to set Refresh Identity Map Results and
Refresh Remote Identity Map Results to true?” Run the wizard again to regenerate
everything. In the new toplink_mappings.xml file, you see something like this for
the query: &lt;lock-mode&gt;1&lt;/lock-mode&gt;.
Note the following:
■
■
■
■
■
The preceding procedure works in conjunction with every polling strategy where
the first operation is a read.
For the sequencing-based polling strategies, the SELECT FOR UPDATE is applied
to the SELECT on the helper table only. The SELECT on the polled table does not
acquire locks because you do not have write access to those tables.
If an adapter instance fails while polling records, those records are returned to the
unprocessed pool (no commit happens).
No individual adapter instance is special. In an ideal distributed system,
coordination between instances is minimal (here effected with locking). No master
acts as a weak link, and every part is identically configured and interchangeable.
Other than the SELECT FOR UPDATE, no extra reads or writes are performed by
the database adapter in a distributed environment.
Load Balancing: MaxTransactionSize and Pessimistic Locking
After you enable pessimistic locking on a polling query, the maxTransactionSize
activation property automatically behaves differently.
Assume that there are 10,000 rows at the start of a polling interval and that
maxTransactionSize is 100. In standalone mode, a cursor is used to iteratively read
and process 100 rows at a time until all 10,000 have been processed, dividing the work
into 10,000 / 100 = 100 sequential transactional units. In a distributed environment, a
cursor is also used to read and process the first 100 rows. However, the adapter
instance will release the cursor, leaving 9,900 unprocessed rows (or 99 transactional
units) for the next polling interval or another adapter instance.
For load balancing purposes, it is dangerous to set the maxTransactionSize too
low in a distributed environment (where it becomes a speed limit). It is best to set the
maxTransactionSize close to the per CPU throughput of the entire business
process. This way, load balancing occurs only when you need it.
4.6 Third-Party Database Support
The following section discusses how to connect to third-party databases. You can use
one vendor’s database for design time and another for run time because BPEL
processes are database-platform neutral.
This section contains the following topics:
■
Design Time
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■
Run Time
To create an Oracle Lite database connection, follow the steps
for a third-party JDBC driver (because the existing wizard and
libraries for the Oracle Lite database require extra configuration).
Table 4–21 provides information for connecting to an Oracle Lite
database.
Note:
See Section A.1.29, &quot;Problems Importing Third-Party Database Tables&quot; for more
information.
4.6.1 Design Time
The following steps generally apply when you create a database connection using a
third-party JDBC driver. For specific third-party databases, see the following topics:
■
Using a Microsoft SQL Server Database
■
Using an IBM DB2 Database
■
Using a Sybase Database
■
Using an InterSystems Cach&eacute; Database
■
Using a MySQL 4 Database
To create a database connection when using a third-party JDBC driver:
1.
Select Connection Navigator from View.
2.
Right-click Database and select New Database Connection.
3.
Click Next in the Welcome window.
4.
Enter a connection name.
5.
Select Third Party JDBC Driver from Connection Type.
6.
Enter your username, password, and role information.
7.
Click New for Driver Class.
8.
Enter the driver name (for example, some.jdbc.Driver) for Driver Class.
See Table 4–21 for some commonly used driver names.
9.
Click New for Library.
10. Click Edit to add each JAR file of your driver to Class Path.
11. Click OK twice to exit the Create Library windows.
12. Click OK to exit the Register JDBC Driver window.
13. Enter your connection string name for URL and click Next.
See Table 4–21 for some commonly used URLs. Also, sample entries appear in the
deployment descriptor file (oc4j-ra.xml). See Section 4.5.5.2, &quot;Properties of the
oc4j-ra.xml File&quot; for more information.
14. Click Test Connection.
15. If the connection is successful, click Finish.
Oracle Application Server Adapter for Databases 4-55
Third-Party Database Support
4.6.1.1 Using a Microsoft SQL Server Database
When using a Microsoft SQL Server database, follow the database connection steps in
Section 4.6.1, &quot;Design Time&quot; and use the following information:
MS JDBC Driver
URL:
jdbc:microsoft:sqlserver://localhost\NAME:1433;SelectMethod=cursor;d
atabasename=???
Driver Class: com.microsoft.jdbc.sqlserver.SQLServerDriver
Driver Jar: .\SQLServer2000\msbase.jar, msutil.jar, mssqlserver.jar
DataDirect Driver
URL: jdbc:oracle:sqlserver://localhost
Driver Class: com.oracle.ias.jdbc.sqlserver.SQLServerDriver
Driver Jar: .\DataDirect\YMbase.jar, YMoc4j.jar, YMutil.jar,
YMsqlserver.jar
Note the following when connecting to a SQL Server database:
■
User name and password
–
SQL Server 2005 installs with Windows authentication as the default.
Therefore, you do not log in with a user name and password; rather, your
Windows user account either has privilege or does not. JDBC requires you to
provide a user name and password.
According to support.microsoft.com, &quot;Microsoft SQL Server 2000 driver
for JDBC does not support connecting by using Windows NT authentication.&quot;
See
http://support.microsoft.com/default.aspx?scid=kb;en-us;313100
However, the DataDirect driver specification states that it does.
If you use your Windows user name and password, you may see something
like the following:
[Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]Login failed for user
'DOMAIN\USER'. The user is not associated with a trusted SQL Server
connection.[Microsoft][SQLServer 2000 Driver for JDBC]
An error occured while attempting to log onto the database.
You must select mixed mode authentication on a clean installation.
–
■
On a Microsoft SQL Server 2000 Express Edition installation, the system
username is su and the password is whatever you provide.
Connect string
From the sqlcmd login, you can infer your connect string, as in the following
examples:
Example 1:
sqlcmd
1&gt;
jdbc:microsoft:sqlserver://localhost:1433
Example 2:
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sqlcmd -S user.mycompany.com\SQLExpress
1&gt;
jdbc:microsoft:sqlserver://user.mycompany.com\SQLExpress:1433
Example 3:
sqlcmd -S user.mycompany.com\SQLExpress -d master
1&gt;
jdbc:microsoft:sqlserver://user.mycompany.com\SQLExpress:1433;databasename=
master
A full URL is as follows:
jdbc:microsoft:sqlserver://serverName[\instanceName]:tcpPort[;SelectMethod=curs
or][;databasename=databaseName]
■
Database name
If you must explicitly supply the database name, but do not know it, go to
C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data
If you see a file named master.mdf, then one of the database names is master.
■
TCP port
Make sure that SQL Server Browser is running and that your SQL Server service
has TCP/IP enabled and is listening on static port 1433. Disable dynamic ports. In
SQL Native Client Configuration/Client Protocols, make sure that TCP/IP is
enabled and that the default port is 1433.
■
JDBC drivers
You must download the JDBC drivers separately. From www.microsoft.com,
click Downloads and search on jdbc. You can also try using the DataDirect driver.
4.6.1.2 Using an IBM DB2 Database
When using an IBM DB2 database, follow the database connection steps in
Section 4.6.1, &quot;Design Time&quot; and use the following information:
DataDirect Driver
URL: jdbc:db2:localhost:NAME
Driver Class: COM.ibm.db2.jdbc.net.DB2Driver
Driver Jar (v8.1): .\IBM-net\db2java_81.zip, db2jcc_81.jar
JT400 Driver
URL: jdbc:as400://hostname;translate binary=true
Driver Class: com.ibm.as400.access.AS400JDBCDriver
Driver Jar: jt400.jar
For correct character set translation, use translate binary=true.
4.6.1.3 Using a Sybase Database
When using a Sybase database, follow the database connection steps in Section 4.6.1,
&quot;Design Time&quot; and use the following information:
jconn Driver
URL: jdbc:sybase:Tds:localhost:5001/NAME
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Driver Class: com.sybase.jdbc2.jdbc.SybDriver
Driver Jar: .\Sybase-jconn\jconn2.jar
DataDirect Driver
URL: jdbc:oracle:sybase://localhost:5001
Driver Class: com.oracle.ias.jdbc.sybase.SybaseDriver
Driver Jar: .\DataDirect\YMbase.jar, YMoc4j.jar, YMutil.jar,
YMsybase.jar
4.6.1.4 Using an InterSystems Cach&eacute; Database
When using an InterSystems Cach&eacute; database, follow the database connection steps in
Section 4.6.1, &quot;Design Time&quot; and use the following information:
URL: jdbc:Cache://machinename_running_Cache_DB_
Server:1972/Cache_Namespace
Driver Class: com.intersys.jdbc.CacheDriver
Driver Jar: C:\CacheSys\Dev\Java\Lib\CacheDB.jar
The default login is _SYSTEM/sys.
4.6.1.5 Using a MySQL 4 Database
When using a MySQL 4 database, follow the database connection steps in
Section 4.6.1, &quot;Design Time&quot; and use the following information:
URL: jdbc:mysql://hostname:3306/dbname
Driver Class: com.mysql.jdbc.Driver
Driver Jar: mysql-connector-java-3.1.10-bin.jar
4.6.1.6 Summary of Third-Party and Oracle Lite Database Connection Information
Table 4–21 summarizes the preceding connection information for common third-party
databases and for Oracle Olite. Also see Table 4–20, &quot; Database Platform Names&quot; for
PlatformClassName information.
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Table 4–21
Database
Microsoft SQL
Server
Information for Connecting to Third-Party Databases and Oracle Olite Database
URL
Driver Class
Driver Jar
MS JDBC driver:
MS JDBC driver:
MS JDBC driver:
jdbc:microsoft:sqlserver://
localhost\NAME:1433;
SelectMethod=cursor;
databasename=???
com.microsoft.jdbc.sqlserver.
SQLServerDriver
.\SQLServer2000\msbase.
jar, msutil.jar,
mssqlserver.jar
DataDirect driver:
com.oracle.ias.jdbc.sqlserver.
SQLServerDriver
DataDirect driver:
DataDirect driver:
DataDirect driver:
DataDirect driver (v8.1):
jdbc:db2:localhost:NAME
COM.ibm.db2.jdbc.net.DB2Driver
JT400 driver:
JT400 driver:
.\IBM-net\db2java_81.zip,
db2jcc_81.jar
jdbc:as400://hostname;
translate binary=true
com.ibm.as400.access.
AS400JDBCDriver
JT400 driver:
jconn driver:
jconn driver:
DataDirect driver:
jdbc:oracle:sqlserver://
localhost
IBM DB2
.\DataDirect\YMbase.jar,
YMoc4j.jar, YMutil.jar,
YMsqlserver.jar
jt400.jar
Example:
jdbc:as400://localhost;
translate binary=true
Sybase
jconn driver:
jdbc:sybase:Tds:localhost:5001/ com.sybase.jdbc2.jdbc.SybDriver .\Sybase-jconn\jconn2.jar
NAME
DataDirect driver:
DataDirect driver:
DataDirect driver:
com.oracle.ias.jdbc.sybase.
.\DataDirect\YMbase.jar,
InterSystems
Cach&eacute;
jdbc:oracle:sybase://
localhost:5001
SybaseDriver
YMoc4j.jar, YMutil.jar,
YMsybase.jar
jdbc:Cache://machinename_
running_Cache_DB_Server:1972/
Cache_Namespace
com.intersys.jdbc.CacheDriver
C:\CacheSys\Dev\Java\Lib\
CacheDB.jar
com.mysql.jdbc.Driver
mysql-connector-java3.1.10-bin.jar
oracle.lite.poljdbc.
POLJDBCDriver
Oracle_Home\integration\
orabpel\lib\olite40.jar
where 1972 is the default port
Example:
jdbc:Cache://127.0.0.1:1972/
Samples
MySQL 4
jdbc:mysql://hostname:3306/
dbname
Example:
jdbc:mysql://localhost:3306/
test
Oracle Olite
Database
jdbc:polite4@localhost:100:
orabpel
4.6.2 Run Time
At run time, put the driver JAR files in the application server class path in either of the
following ways:
■
Edit the class path in the following files:
For the Oracle BPEL Process Manager for Developers installation, go to
Oracle_Home/integration/orabpel/system/appserver/oc4j/j2ee/home/config/
server.xml
For the Oracle BPEL Process Manager for OracleAS Middle Tier installation, go to
Oracle_Home/j2ee/OC4J_BPEL/config/server.xml
Or
Oracle Application Server Adapter for Databases 4-59
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■
Drop the JAR files into the following directories:
For the Oracle BPEL Process Manager for Developers installation, go to
Oracle_Home/integration/orabpel/system/appserver/oc4j/j2ee/home/applib
For the Oracle BPEL Process Manager for OracleAS Middle Tier installation, go to
Oracle_Home/j2ee/OC4J_BPEL/applib
4.7 Stored Procedure and Function Support
This section describes how the database adapter supports the use of stored procedures
and functions for Oracle databases only. Stored procedures and functions for
non-Oracle databases are not supported out-of-the-box.
This section contains the following topics:
■
Design Time: Using the Adapter Configuration Wizard
■
Design Time: WSDL and XSD Generation
■
Run Time: Before Stored Procedure Invocation
■
Run Time: After Stored Procedure Invocation
■
Advanced Topics
4.7.1 Design Time: Using the Adapter Configuration Wizard
The Adapter Configuration Wizard – Stored Procedures is used to generate an adapter
service WSDL and the necessary XSD. The adapter service WSDL encapsulates the
underlying stored procedure or function as a Web service with a WSIF JCA binding.
The XSD describes the procedure or function, including all the parameters and their
types. This XSD provides the definition used to create instance XML that is submitted
to the database adapter at run time.
4.7.1.1 Using Top-Level Standalone APIs
This section describes how to use the wizard with APIs that are not defined in PL/SQL
packages. You use the Adapter Configuration Wizard – Stored Procedures to select a
procedure or function and generate the XSD. See Section 4.4, &quot;The Adapter
Configuration Wizard&quot; if you are not familiar with how to start the wizard.
In the wizard, select Database Adapter, as shown in Figure 4–26.
Figure 4–26 Selecting the Database Adapter in the Adapter Configuration Wizard
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After entering a service name (for example, ProcedureProc) and an optional
description for the service, you associate a connection with the service, as shown in
Figure 4–27. You can select an existing connection from the list or create a new
connection.
Figure 4–27 Setting the Database Connection in the Adapter Configuration Wizard
For the Operation Type, select Call a Stored Procedure or Function, as shown in
Figure 4–28.
Figure 4–28 Calling for a Stored Procedure or Function in the Adapter Configuration
Wizard
Next you select the schema and procedure or function. You can select a schema from
the list or select &lt;Default Schema&gt;, in which case the schema associated with the
connection is used. If you know the procedure name, enter it in the Procedure field. If
the procedure is defined inside a package, then you must include the package name, as
in EMPLOYEE.GET_NAME.
If you do not know the schema and procedure names, click Browse to access the
Stored Procedures window, shown in Figure 4–29.
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Figure 4–29 Searching for a Procedure or Function
Select a schema from the list or select &lt;Default Schema&gt;. The available procedures
are displayed in the left window. To search for a particular API in a long list of APIs,
enter search criteria in the Search field. For example, to find all APIs that begin with
XX, enter XX% and click the Search button. Clicking the Show All button displays all
available APIs.
Figure 4–30 shows how you can select the PROC procedure and click the Arguments
tab. The Arguments tab displays the parameters of the procedure, including their
names, type, mode (IN, IN/OUT or OUT) and the numeric position of the parameter in
the definition of the procedure.
Figure 4–30 Viewing the Arguments of a Selected Procedure
Figure 4–31 shows how the Source tab displays the code that implements the
procedure. Text that matches the name of the procedure is highlighted.
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Figure 4–31 Viewing the Source Code of a Selected Procedure
After you select a procedure or function and click OK, information about the API is
displayed, as shown in Figure 4–32. Use Back or Browse to make revisions, or Next
followed by Finish to conclude.
Figure 4–32 Viewing Procedure or Function Details in the Adapter Configuration Wizard
When you have finished using the Adapter Configuration Wizard, two files are added
to the existing project: servicename.wsdl (for example, ProcedureProc.wsdl)
and the generated XSD. The generated XSD file is named schema_package_
procedurename.xsd. In this case, SCOTT_PROC.xsd is the name of the generated
XSD file.
4.7.1.2 Using Packaged APIs and Overloading
Using APIs defined in packages is similar to using standalone APIs. The only
difference is that you can expand the package name to see a list of all the APIs defined
within the package, as shown in Figure 4–33.
APIs that have the same name but different parameters are called overloaded APIs. As
shown in Figure 4–33, the package called PACKAGE has two overloaded procedures
called OVERLOAD.
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Figure 4–33 A Package with Two Overloaded Procedures
As Figure 4–34 shows, the code for the entire PL/SQL package is displayed, regardless
of which API from the package is selected when you view the Source tab. Text that
matches the name of the procedure is highlighted.
Figure 4–34 Viewing the Source Code of an Overloaded Procedure
After you select a procedure or function and click OK, information about the API is
displayed, as shown in Figure 4–35. The schema, procedure name, and parameter list
are displayed. Note how the procedure name is qualified with the name of the package
(PACKAGE.OVERLOAD). Use Back or Browse to make revisions, or Next followed
by Finish to conclude.
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Figure 4–35 Viewing Procedure or Function Details in the Adapter Configuration Wizard
When you have finished using the Adapter Configuration Wizard, two files are added
to the existing project: Overload.wsdl and SCOTT_PACKAGE_OVERLOAD_2.xsd.
The _2 appended after the name of the procedure in the XSD filename differentiates
the overloaded APIs.
4.7.2 Design Time: WSDL and XSD Generation
The Adapter Configuration Wizard – Stored Procedures is capable of creating a WSDL
and a valid XSD that describes the signature of a stored procedure or function. The
following sections describe the relevant structure and content of both the WSDL and
the XSD, and their relationship with each other.
4.7.2.1 The WSDL–XSD Relationship
In the paragraphs that follow, the operation name, ProcedureProc, and procedure
name, PROC, are taken from an example cited previously (see Figure 4–32). The
generated WSDL imports the XSD.
&lt;types&gt;
&lt;schema xmlns=”http://www.w3.org/2001/XMLSchema”&gt;
&lt;import
namespace=”http://xmlns.oracle.com/pcbpel/adapter/db/SCOTT/PROC/”
schemaLocation=”SCOTT_PROC.xsd”/&gt;
&lt;/schema&gt;
&lt;/types&gt;
The namespace is derived from the schema, package, and procedure name, and
appears as the targetNamespace in the generated XSD.
A root element called InputParameters is created in the XSD for specifying
elements that correspond to the IN and IN/OUT parameters of the stored procedure.
Another root element called OutputParameters is also created in the XSD for
specifying elements only if there are any IN/OUT or OUT parameters. Note that
IN/OUT parameters appear in both root elements.
These root elements are represented in the XSD as an unnamed complexType
definition whose sequence includes one element for each parameter. If there are no IN
or IN/OUT parameters, the InputParameters root element is still created; however,
the complexType is empty. A comment in the XSD indicates that there are no such
parameters. An example of one of these root elements follows.
&lt;element name=&quot;InputParameters&quot;
&lt;complexType&gt;
&lt;sequence&gt;
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&lt;element …&gt;
…
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
The WSDL defines message types whose parts are defined in terms of these two root
elements.
&lt;message name=”args_in_msg”
&lt;part name=”InputParameters” element=”db:InputParameters”/&gt;
&lt;/message&gt;
&lt;message name=”args_out_msg”
&lt;part name=”OutputParameters” element=”db:OutputParameters”/&gt;
&lt;/message&gt;
The db namespace is the same as the targetNamespace of the generated XSD. Note
that the args_in_msg message type always appears in the WSDL while args_out_
msg is included only if the OutputParameters root element is generated in the XSD.
An operation is defined in the WSDL whose name is the same as the adapter service
and whose input and output messages are defined in terms of these two message
types.
&lt;portType name=”ProcedureProc_ptt”&gt;
&lt;operation name=”ProcedureProc”&gt;
&lt;input message=”tns:args_in_msg”/&gt;
&lt;output message=”tns:args_out_msg”/&gt;
&lt;/operation&gt;
&lt;/portType&gt;
The input message always appears while the output message depends on the existence
of the OutputParameters root element in the XSD. The tns namespace is derived
from the operation name and is defined in the WSDL as
xmlns:tns=”http://xmlns.oracle.com/pcbpel/adapter/db/ProcedureProc/”
The root elements in the XSD define the structure of the parts used in the messages
that are passed into and sent out of the Web service encapsulated by the WSDL.
The input message in the WSDL corresponds to the InputParameters root element
from the XSD. The instance XML supplies values for the IN and IN/OUT parameters of
the stored procedure. The output message corresponds to the OutputParameters
root element. This is the XML that gets generated after the stored procedure has
executed. It holds the values of any IN/OUT and OUT parameters.
4.7.2.2 Supported Primitive Datatypes
Many primitive datatypes have well-defined mappings and therefore are supported
by both the design-time and run-time components. In addition, you can use
user-defined types such as VARRAY, nested tables, and OBJECT. Table 4–22 lists the
primitive datatypes supported by the database adapter for stored procedures.
Table 4–22 Primitive Datatypes Supported by the Database Adapter for Stored
Procedures
SQL or PL/SQL Type
XML Schema Type
BINARY_DOUBLE
double
DOUBLE PRECISION
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Table 4–22 (Cont.) Primitive Datatypes Supported by the Database Adapter for Stored
Procedures
SQL or PL/SQL Type
XML Schema Type
BINARY_FLOAT
float
FLOAT
REAL
BINARY_INTEGER
int
INTEGER
PLS_INTEGER
SMALLINT
BLOB
base64Binary
LONG RAW
RAW
CHAR
string
CLOB
LONG
VARCHAR2
DATE
dateTime
TIMESTAMP
DECIMAL
decimal
NUMBER
4.7.2.3 Generated XSD Attributes
Table 4–23 lists the attributes used in the generated XSDs. Attributes prefixed with db:
are specific to the database adapter.
Table 4–23
Generated XSD Attributes
Attribute
Example
Purpose
name
name=&quot;param&quot;
Name of an element
type
type=&quot;string&quot;
XML schema type
db:type
db:type=&quot;VARCHAR2&quot;
SQL or PL/SQL type
db:index
db:index=&quot;1&quot;
Position of a parameter
db:default
db:default=&quot;true&quot;
Has a default clause
minOccurs
minOccurs=&quot;0&quot;
Minimum occurrences
maxOccurs
maxOccurs=&quot;1&quot;
Maximum occurrences
nillable
nillable=&quot;true&quot;
Permits null values
The db namespace is used to distinguish attributes used during run time from
standard XML schema attributes. The db:type attribute is used to indicate what the
database type is so that a suitable JDBC type mapping can be obtained at run time. The
db:index attribute is used as an optimization by both the design-time and run-time
components to ensure that the parameters are arranged in the proper order. Parameter
indices begin at 1 for procedures and 0 for functions. The return value of a function is
represented as an OutputParameter element whose name is the name of the function
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and whose db:index is 0. The db:default attribute is used to indicate whether or
not a parameter has a default clause.
The minOccurs value is set to 0 to allow for an IN parameter to be removed from the
XML. This is useful when a parameter has a default clause defining a value for the
parameter (for example, X IN INTEGER DEFAULT 0). At run time, if no element is
specified for the parameter in the XML, the parameter is omitted from the invocation
of the stored procedure, thus allowing the default value to be used. Each parameter
can appear at most once in the invocation of a stored procedure or function. Therefore,
maxOccurs, whose default value is always 1, is always omitted from elements
representing parameters.
The nillable attribute is always set to true to allow the corresponding element in
the instance XML to have a null value (for example, &lt;X/&gt; or &lt;X&gt;&lt;/X&gt;). In some cases,
however, to pass schema validation, an element such as this, which does have a null
value, must state this explicitly (for example, &lt;X xsi:nil=&quot;true&quot;/&gt;). The
namespace, xsi, used for the nillable attribute, must be declared explicitly in the
instance XML (for example,
xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;).
4.7.2.4 User-Defined Types
The wizard can also generate valid definitions for user-defined types such as
collections (VARRAY and nested tables) and OBJECT. These are created as
complexType definitions in the XSD.
For VARRAY, the complexType definition defines a single element in its sequence,
called name_ITEM, where name is the name of the VARRAY element. All array
elements in the XML are so named. Given the following VARRAY type definition,
SQL&gt; CREATE TYPE FOO AS VARRAY (5) OF VARCHAR2 (10);
and a VARRAY element, X, whose type is FOO, the following complexType is
generated:
&lt;complexType name=&quot;FOO&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;X_ITEM&quot; db:type=&quot;VARCHAR2&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;5&quot;
nillable=&quot;true&quot;/&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;maxLength value=&quot;10&quot;/&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
The minOccurs value is 0 to allow for an empty collection. The maxOccurs value is
set to the maximum number of items that the collection can hold. Note that the
db:index attribute is not used. Having nillable set to true allows individual
items in the VARRAY to be null.
Note the use of the restriction specified on the element of the VARRAY, FOO. This is
used on types such as CHAR and VARCHAR2, whose length is known from the
declaration of the VARRAY (or nested table). It specifies the type and maximum length
of the element. An element value that exceeds the specified length causes the instance
XML to fail during schema validation.
The attribute values of a parameter declared to be of type FOO look as follows in the
generated XSD:
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&lt;element name=&quot;X&quot; type=&quot;db:FOO&quot; db:type=&quot;Array&quot; db:index=&quot;1&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
The type and db:type values indicate that the parameter is represented as an array
defined by the complexType called FOO in the XSD. The value for db:index is
whatever the position of that parameter is in the stored procedure.
A nested table is treated almost identically to a VARRAY. The following nested table
type definition,
SQL&gt; CREATE TYPE FOO AS TABLE OF VARCHAR2 (10);
is also generated as a complexType with a single element in its sequence, called
name_ITEM. The element has the same attributes as in the VARRAY example, except
that the maxOccurs value is unbounded because nested tables can be of arbitrary size.
&lt;complexType name=&quot;FOO&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;X_ITEM&quot; … maxOccurs=&quot;unbounded&quot; nillable=&quot;true&quot;&gt;
...
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
An identical restriction is generated for the X_ITEM element in the VARRAY. The
attributes of a parameter, X, declared to be of this type, are the same as in the VARRAY
example.
An OBJECT definition is also generated as a complexType. Its sequence holds one
element for each attribute in the OBJECT. The following OBJECT,
SQL&gt; CREATE TYPE FOO AS OBJECT (X VARCHAR2 (10), Y NUMBER);
is represented as a complexType called FOO with two sequence elements.
&lt;complexType name=&quot;FOO&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;X&quot; db:type=&quot;VARCHAR2&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;/&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;maxLength value=&quot;10&quot;/&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;element name=&quot;Y&quot; type=&quot;decimal&quot; db:type=&quot;NUMBER&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
The minOccurs value is 0 to allow for the element to be removed from the XML. This
causes the value of the corresponding attribute in the OBJECT to be set to null at run
time. The nillable value is true to allow empty elements to appear in the XML,
annotated with the xsi:nil attribute, to indicate that the value of the element is null.
Again, the db:index attribute is not used.
Note the use of a restriction on the VARCHAR2 attribute. The length is known from the
declaration of the attribute in the OBJECT.
4.7.2.5 Complex User-Defined Types
User-defined types can be defined in arbitrarily complex ways. An OBJECT can
contain attributes whose types are defined as any of the aforementioned user-defined
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types. This means that the type of an attribute in an OBJECT can be another OBJECT,
VARRAY or a nested table, and so on. The base type of a VARRAY or a nested table can
also be an OBJECT. Allowing the base type of a collection to be another collection
supports multidimensional collections.
4.7.2.6 Object Type Inheritance
The wizard is capable of generating a valid XSD for parameters whose types are
defined using OBJECT-type inheritance. Given the following type hierarchy,
SQL&gt; CREATE TYPE A AS OBJECT (A1 NUMBER, A2 VARCHAR2 (10)) NOT FINAL;
SQL&gt; CREATE TYPE B UNDER A (B1 VARCHAR2 (10));
and a procedure containing a parameter, X, whose type is B,
SQL&gt; CREATE PROCEDURE P (X IN B) AS BEGIN … END;
the wizard generates an InputParameters element for parameter X as
&lt;element name=&quot;X&quot; type=&quot;db:B&quot; db:index=&quot;1&quot; db:type=&quot;Struct&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
where the definition of OBJECT type B in the XSD is generated as the following
complexType.
&lt;complexType name=&quot;B&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;A1&quot; type=&quot;decimal&quot; db:type=&quot;NUMBER&quot; minOccurs=&quot;0&quot;
nillable=&quot;true&quot;/&gt;
&lt;element name=&quot;A2&quot; db:type=&quot;VARCHAR2&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;&gt;
...
&lt;/element&gt;
&lt;element name=&quot;B1&quot; db:type=&quot;VARCHAR2&quot; minOccurs=&quot;0&quot; nillable=&quot;true&quot;&gt;
...
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
Restrictions on the maximum length of attributes A2 and B1 are added appropriately.
Notice how the OBJECT type hierarchy is flattened into a single sequence of elements
that corresponds to all of the attributes in the entire hierarchy.
4.7.2.7 Object References
The wizard can also generate a valid XSD for parameters that are references to OBJECT
types (for example, object references), or are user-defined types that contain an object
reference somewhere in their definition. In this example,
SQL&gt; CREATE TYPE FOO AS OBJECT (…);
SQL&gt; CREATE TYPE BAR AS OBJECT (F REF FOO, …);
SQL&gt; CREATE PROCEDURE PROC (X OUT BAR, Y OUT REF FOO) AS BEGIN … END;
the wizard generates complexType definitions for FOO and BAR as already indicated,
except that for BAR, the element for the attribute, F, is generated as
&lt;element name=”F” type=”db:FOO” db:type=”Ref” minOccurs=”0” nillable=”true”/&gt;
where together, the type and db:type attribute values indicate that F is a reference
to the OBJECT type FOO.
For a procedure PROC, the following elements are generated in the
OutputParameters root element of the XSD:
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&lt;element name=”X” type=”db:BAR” db:index=”1” db:type=”Struct” minOccurs=”0”
nillable=”true”/&gt;
&lt;element name=”Y” type=”db:FOO” db:index=”2” db:type=”Ref” minOccurs=”0”
nillable=”true”/&gt;
For Y, note the value of the db:type attribute, Ref. Together with the type attribute,
the element definition indicates that Y is a reference to FOO.
Note that there is a restriction on the use of object references that limits their parameter
mode to OUT only. Passing an IN or IN/OUT parameter into an API that is either
directly a REF or, if the type of the parameter is user-defined, contains a REF
somewhere in the definition of that type, is not permitted.
4.7.2.8 Referencing Types in Other Schemas
You can refer to types defined in other schemas, provided that the necessary privileges
to access them have been granted. For example, suppose type OBJ was declared in
SCHEMA1:
SQL&gt; CREATE TYPE OBJ AS OBJECT (…);
The type of a parameter in a stored procedure declared in SCHEMA2 can be type OBJ
from SCHEMA1:
CREATE PROCEDURE PROC (O IN SCHEMA1.OBJ) AS BEGIN … END;
This is possible only if SCHEMA1 granted permission to SCHEMA2 to access type OBJ:
SQL&gt; GRANT EXECUTE ON OBJ TO SCHEMA2;
If the required privileges are not granted, an error occurs when trying to create
procedure PROC in SCHEMA2:
PLS-00201: identifier &quot;SCHEMA1.OBJ&quot; must be declared
Because the privileges have not been granted, type OBJ from SCHEMA1 is not visible to
SCHEMA2; therefore, SCHEMA2 cannot refer to it in the declaration of parameter O.
4.7.3 Run Time: Before Stored Procedure Invocation
This section discusses important considerations of stored procedure support.
4.7.3.1 Value Binding
Consider the extraction of values from the XML and how the run time works given
those values. The possible cases for data in the XML corresponding to the value of a
parameter whose type is one of the supported primitive datatypes value are as
follows:
1.
The value of an element is specified (for example, &lt;X&gt;100&lt;/X&gt;).
2.
The value of an element is not specified (for example, &lt;X/&gt;).
3.
The value is explicitly specified as null (for example, &lt;X xsi:nil=&quot;true&quot;/&gt;)
4.
The element is not specified in the XML at all.
Each case is handled differently.
In the first case, the value is taken from the XML as-is and is converted to the
appropriate object according to its type. That object is then bound to its corresponding
parameter during preparation of the stored procedure invocation.
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In the second and third cases, the actual value extracted from the XML is null. The
type converter accepts null and returns it without any conversion. The null value is
bound to its corresponding parameter regardless of its type. Essentially, this is the
same as passing null for parameter X.
The fourth case has two possibilities. The parameter either has a default clause or it
does not. If the parameter has a default clause, then the parameter is completely
excluded from the invocation of the stored procedure. This allows the default value to
be used for the parameter. On the other hand, if the parameter does not have a default
clause, then the parameter is included in the invocation of the procedure. A null value
is bound to the parameter by default:
SQL&gt; CREATE PROCEDURE PROC (X IN INTEGER DEFAULT 0) AS BEGIN … END;
Here, no value is bound to the parameter. In fact, the parameter is completely
excluded from the invocation of the stored procedure. This allows the value of 0 to
default for parameter X.
To summarize, the following PL/SQL is executed in each of the four cases:
1.
&quot;BEGIN PROC (X=&gt;?); END;&quot; - X = 100
2.
&quot;BEGIN PROC (X=&gt;?); END;&quot; - X = null
3.
&quot;BEGIN PROC (X=&gt;?); END;&quot; - X = null
4.
There are two possibilities:
a.
&quot;BEGIN PROC (); END;&quot; - X = 0 (X has a default clause)
b.
&quot;BEGIN PROC (X=&gt;?); END;&quot; - X = null (X does not have a default
clause)
With the exception of default clause handling, these general semantics also apply to
item values of a collection or attribute values of an OBJECT whose types are one of the
supported primitive datatypes. The semantics of &lt;X/&gt; when the type is user-defined
are, however, quite different.
For a collection, whether it is a VARRAY or a nested table, the following behavior can
be expected given a type definition such as
SQL&gt; CREATE TYPE ARRAY AS VARRAY (5) OF VARCHAR2 (10);
and XML for a parameter, X, which has type ARRAY, that appears as follows:
&lt;X&gt;
&lt;X_ITEM xsi:nil=&quot;true&quot;/&gt;
&lt;X_ITEM&gt;Hello&lt;/X_ITEM&gt;
&lt;X_ITEM xsi:nil=&quot;true&quot;/&gt;
&lt;X_ITEM&gt;World&lt;/X_ITEM&gt;
&lt;/X&gt;
The first and third elements of the VARRAY are set to null. The second and fourth are
assigned their respective values. No fifth element is specified in the XML; therefore,
the VARRAY instance has only four elements.
Assume an OBJECT definition such as
SQL&gt; CREATE TYPE OBJ AS OBJECT (A INTEGER, B INTEGER, C INTEGER);
and XML for a parameter, X, which has type OBJ, that appears as
&lt;X&gt;
&lt;A&gt;100&lt;/A&gt;
&lt;C xsi:nil=&quot;true&quot;/&gt;
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&lt;/X&gt;
The value 100 is assigned to attribute A and null is assigned to attributes B and C.
Because there is no element in the instance XML for attribute B, a null value is
assigned.
The second case, &lt;X/&gt;, behaves differently if the type of X is user-defined. Rather than
assigning null to X, an initialized instance of the user-defined type is created and
bound instead.
In the preceding VARRAY example, if &lt;X/&gt; or &lt;X&gt;&lt;/X&gt; is specified, then the value
bound to X is an empty instance of the VARRAY. In PL/SQL, this is equivalent to
calling the type constructor and assigning the value to X. For example,
X := ARRAY();
Similarly, in the preceding OBJECT example, an initialized instance of OBJ, whose
attribute values have all been null assigned, is bound to X. Like the VARRAY case, this
is equivalent to calling the type constructor. For example,
X := OBJ(NULL, NULL, NULL);
To specifically assign a null value to X when the type of X is user-defined, add the
xsi:nil attribute to the element in the XML, as in
&lt;X xsi:nil=&quot;true&quot;/&gt;
4.7.3.2 Datatype Conversions
This section describes the conversion of datatypes such as CLOB, DATE, TIMESTAMP,
and binary datatypes including RAW, LONG RAW and BLOB.
For CLOB parameters, a temporary CLOB is first created. The data extracted from the
XML is then written to it before binding the CLOB to its corresponding parameter. The
temporary CLOB is freed when the interaction completes. For other character types,
such as CHAR and VARCHAR2, the data is simply extracted and bound as necessary.
Note that it is possible to bind an XML document to a CLOB (or VARCHAR2 if it is large
enough). However, appropriate substitutions for &lt;, &gt;, and so on, must first be made
(for example, &amp;lt; for &lt; and &amp;gt; for &gt;).
Note that the XML schema type, dateTime, represents both DATE and TIMESTAMP.
This means that the XML values for both datatypes must adhere to the XML schema
representation for dateTime. Therefore, a simple DATE string, 01-JAN-05, is invalid.
XML schema defines dateTime as YYYY-MM-DDTHH:mm:ss. Therefore, the correct
DATE value is 2005-01-01T00:00:00.
Data for binary datatypes must be represented in a human readable manner. The
chosen XML schema representation for binary data is base64Binary. The type
converter uses the javax.mail.internet.MimeUtility encode and decode APIs
to process binary data. The encode API must be used to encode all binary data into
base64Binary form so that it can be used in an XML file. The type converter uses the
decode API to decode the XML data into a byte array. This is then bound either
directly, as is the case with RAW and LONG RAW parameters, or is used to create a
temporary BLOB, which is then bound to its associated BLOB parameter. The
temporary BLOB is freed when the interaction completes.
Conversions for the remaining datatypes are straightforward and require no
additional information.
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4.7.4 Run Time: After Stored Procedure Invocation
After the procedure (or function) executes, the values for any IN/OUT and OUT
parameters are retrieved. These correspond to the values of the elements in the
OutputParameters root element in the generated XSD.
4.7.4.1 Datatype Conversions
Conversions of the data retrieved are straightforward. However, BLOB, CLOB (and
other character data), as well as RAW and LONG RAW conversions, require special
attention.
When a CLOB is retrieved, the entire contents of that CLOB are written to the
corresponding element in the generated XML. Standard DOM APIs are used to
construct the XML. This means that character data, as for types like CLOB, CHAR, and
VARCHAR2, is massaged as needed to make any required substitutions so that the
value is valid and can be placed in the XML for subsequent processing. Therefore,
substitutions for &lt; and &gt;, for example, in an XML document stored in a CLOB are
made so that the value placed in the element within the generated XML for the
associated parameter is valid.
Raw data, such as for RAW and LONG RAW types, is retrieved as a byte array. For
BLOBs, the BLOB is first retrieved, and then its contents are obtained, also as a byte
array. The byte array is then encoded using the
javax.mail.internet.MimeUtility encode API into base64Binary form. The
encoded value is then placed in its entirety in the XML for the corresponding element.
The MimeUtility decode API must be used to decode this value back into a byte
array.
Conversions for the remaining datatypes are straightforward and require no
additional information.
4.7.4.2 Null Values
Elements whose values are null appear as empty elements in the generated XML and
are annotated with the xsi:nil attribute. This means that the xsi namespace is
declared in the XML that is generated. Generated XML for a procedure PROC, which
has a single OUT parameter, X, whose value is null, looks as follows:
&lt;db:OutputParameters …
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”&gt;
&lt;X xsi:nil=”true”/&gt;
&lt;/db:OutputParameters&gt;
The db namespace is also declared (that is, xmlns:db=&quot;...&quot;). Note that XML
elements for parameters of any type (including user-defined types) appear this way if
their value is null.
4.7.4.3 Function Return Values
The return value of a function is treated as an OUT parameter at position 0 whose
name is the name of the function itself. For example,
CREATE FUNCTION FACTORIAL (X IN INTEGER) RETURN INTEGER AS
BEGIN
IF (X &lt;= 0) THEN RETURN 1;
ELSE RETURN FACTORIAL (X - 1);
END IF;
END;
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An invocation of this function with a value of 5, for example, results in a value of 120
and appears as &lt;FACTORIAL&gt;120&lt;/FACTORIAL&gt; in the XML generated in
OutputParameters.
4.7.5 Advanced Topics
This section discusses scenarios for types that are not supported directly using the
stored procedure functionality that the database adapter provides. The following
sections describe workarounds that address the need to use these datatypes.
4.7.5.1 Support for REF CURSOR
Neither the design-time nor run-time components support REF CURSOR types
directly. The solution is to use a collection of an OBJECT type. Because the number of
rows returned by a REF CURSOR is usually unknown, it is best to use a nested table as
the collection type. This solution involves using a Java stored procedure to convert a
ResultSet into an instance of the declared collection type. A sample tutorial
illustrating this is provided in the following directory:
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter\ResultSetConverter
4.7.5.2 Support for PL/SQL Boolean, PL/SQL Record, and PL/SQL Table Types
The wizard provides a mechanism that detects when these types are used and then
invokes Oracle JPublisher to generate the necessary wrappers automatically. Oracle
JPublisher generates two SQL files, one to create schema objects, and another to drop
them. The SQL that creates the schema objects is automatically executed from within
the wizard to create the schema objects in the database schema before the XSD is
generated. For example, suppose the following package specification is declared:
CREATE PACKAGE PKG AS
TYPE REC IS RECORD (X NUMBER, Y VARCHAR2 (10));
TYPE TBL IS TABLE OF NUMBER INDEX BY PLS_INTEGER;
PROCEDURE PROC (R REC, T TBL, B BOOLEAN);
END;
Figure 4–36 shows the step in the wizard that is displayed when procedure PROC from
package PKG is selected.
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Figure 4–36 Specifying a Stored Procedure in the Adapter Configuration Wizard
As Figure 4–36 shows, the original procedure name is fully qualified, PKG.PROC. The
type of parameter, R, is the name of the RECORD. The type of T is the name of the
TABLE. The type of B is BOOLEAN. The name of the wrapper package that is generated
is derived from the service name, bpel_ServiceName (for example, bpel_
UseJPub). This is the name of the generated package that contains the wrapper
procedure. The check box can be used to force the wizard to overwrite an existing
package when the schema objects are created.
Clicking Next reveals the Finish page of the wizard, as shown in Figure 4–37.
Figure 4–37 Defining a Database Adapter Service: Finish Page
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The contents of this page describe what the wizard has detected and what actions are
performed when the Finish button is clicked. The following summarizes the contents
of this page:
1.
The name of the generated WSDL is UseJPub.wsdl.
2.
Two SQL scripts are created and added to the BPEL process project:
3.
a.
BPEL_USEJPUB.sql – Creates the schema objects.
b.
BPEL_USEJPUB_drop.sql – Drops the schema objects.
The name of the generated XSD is SCOTT_USEJPUB_PKG-24PROC.xsd.
When you click Finish, Oracle JPublisher is invoked to generate the SQL files and load
the schema objects into the database. The process of generating wrappers may take
quite some time to complete. Processing times for wrappers that are generated in the
same package usually require less time after an initial wrapper has been generated for
another procedure within the same package.
The following user-defined types are generated to replace the PL/SQL types from the
original procedure:
SQL&gt; CREATE TYPE PKG_REC AS OBJECT (X NUMBER, Y VARCHAR2 (10));
SQL&gt; CREATE TYPE PKG_TBL AS TABLE OF NUMBER;
The naming convention for these types is OriginalPackageName_
OriginalTypeName. BOOLEAN is replaced by INTEGER in the wrapper procedure.
Acceptable values for the original BOOLEAN parameter now that it is an INTEGER are 1
for true and 0 for false. Any value other than 1 is considered false. The generated
wrapper procedure uses APIs from the SYS.SQLJUTL package to convert from
INTEGER to BOOLEAN and vice-versa.
A new wrapper package called BPEL_USEJPUB is created that contains the wrapper
for procedure PROC, called PKG$PROC, as well as conversion APIs that convert from
the PL/SQL types to the user-defined types and vice-versa. If the original procedure is
a root-level procedure, the name of the generated wrapper procedure is
TOPLEVEL$OriginalProcedureName.
The generated XSD represents the signature of wrapper procedure PKG$PROC and not
the original procedure. The name of the XSD file is URL-encoded, which replaces $
with -24.
Note the naming conventions for the generated artifacts:
■
■
■
■
The service name is used in the names of the WSDL and SQL files. It is also used
as the name of the wrapper package.
The name of the generated XSD is derived from the schema name, service name,
and the original package and procedure names.
The name of a user-defined type is derived from the original package name and
the name of its corresponding PL/SQL type.
The name of the wrapper procedure is derived from the original package and
procedure names. TOPLEVEL$ is used for root-level procedures.
The name of the generated wrapper package is limited to 30 characters. The name of
the wrapper procedure is limited to 29 characters. If the names generated by Oracle
JPublisher are longer than these limits, they are truncated.
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When the PartnerLink that corresponds with the service associated with the procedure
is invoked, the generated wrapper procedure is executed instead of the original
procedure.
4.7.5.3 Default Clauses in Wrapper Procedures
If a procedure contains a special type that requires a wrapper to be generated, the
default clauses on any of the parameters are not carried over to the wrapper. For
example, consider
SQL&gt; CREATE PROCEDURE NEEDSWRAPPER (
&gt;
B BOOLEAN DEFAULT TRUE, N NUMBER DEFAULT 0) IS BEGIN … END;
Assuming that this is a root-level procedure, the signature of the generated wrapper
procedure is
TOPLEVEL$NEEDSWRAPPER (B INTEGER, N NUMBER)
The BOOLEAN type has been replaced by INTEGER. The default clauses on both
parameters are missing in the generated wrapper. Parameters of generated wrapper
procedures never have a default clause, even if they did in the original procedure.
In this example, if an element for either parameter is not specified in the instance XML,
then a null value is bound to that parameter during the invocation of the wrapper
procedure. The default value of the parameter that is specified in the original
procedure is not used.
To address this, the generated SQL file that creates the wrapper must be edited,
restoring the default clauses to the parameters of the wrapper procedure. The wrapper
and any additional schema objects must then be reloaded into the database schema.
After editing the SQL file, the signature of the wrapper procedure is
TOPLEVEL$NEEDSWRAPPER (B INTEGER DEFAULT 1, N NUMBER DEFAULT 0)
For BOOLEAN parameters, the default value for true is 1 and the default value for false
is 0.
As a final step, the XSD generated for the wrapper must be edited. A special attribute
must be added to elements representing parameters that now have default clauses.
Add db:default=&quot;true&quot; to each element representing a parameter that now has a
default clause. For example,
&lt;element name=&quot;B&quot; … db:default=&quot;true&quot; …/&gt;
&lt;element name=&quot;N&quot; … db:default=&quot;true&quot; …/&gt;
This attribute is used at run time to indicate that, if the element is missing from the
instance XML, the corresponding parameter must be omitted from the procedure call.
The remaining attributes of these elements remain exactly the same.
4.8 Use Case for Creating and Configuring a Stored Procedure in
JDeveloper BPEL Designer
This tutorial describes how to integrate a stored procedure into Oracle BPEL Process
Manager with JDeveloper BPEL Designer. Other tutorials that demonstrate stored
procedures and functions are File2StoredProcedure, JPublisherWrapper, and
ResultSetConverter. Go to
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter
This section contains the following topics:
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■
Creating a Stored Procedure
■
Creating a Database Connection
■
Creating a Workspace and a Greeting Process
■
Creating a Partner Link
■
Creating an Invoke Activity
■
Creating an Initial Assign Activity
■
Creating a Second Assign Activity
■
Validating, Compiling, and Deploying the Greeting Process
■
Running the Greeting Process
Note:
Stored procedures are supported for Oracle databases only.
4.8.1 Creating a Stored Procedure
1.
Connect to the scott schema of the Oracle database using SQL*Plus. This is the
schema in which to create the stored procedure. This example assumes tiger is
the password.
sqlplus scott/tiger
2.
Create the stored procedure (note the blank space after Hello):
SQL&gt; CREATE PROCEDURE HELLO (NAME IN VARCHAR2, GREETING OUT VARCHAR2) AS
2 BEGIN
3
GREETING := 'Hello ' || NAME;
4 END;
5 /
Procedure created.
4.8.2 Creating a Database Connection
Use the Create Database Connection Wizard in JDeveloper BPEL Designer to create a
connection to the scott schema in which you created the stored procedure.
1.
Go to JDeveloper BPEL Designer.
2.
Select Connection Navigator from the View main menu.
3.
Right-click Database in the Connection Navigator window and select New
Database Connection.
This starts the Create Database Connection Wizard.
4.
Click Next on the Welcome window.
5.
Enter a name (for example, myConnection) in the Connection Name field of the
Type window.
6.
Select the database connection type (for example, Oracle (JDBC)) from the
Connection Type list, and click Next.
7.
Enter scott in the Username field of the Authentication window.
8.
Enter the password for scott in the Password field (tiger for this example).
9.
Leave the remaining fields as they are, and click Next.
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10. Enter the following connection information. If you do not know this information,
contact your database administrator.
Field
Example of Value
Driver
thin
Host Name
localhost
JDBC Port
1521
SID
ORCL
11. Click Next.
12. Click Test Connection on the Test window.
If the connection was successful, the following message appears:
Success!
13. Click Finish.
4.8.3 Creating a Workspace and a Greeting Process
1.
Select Application Navigator from the View main menu in JDeveloper BPEL
Designer.
2.
Select New from the File main menu.
3.
Double-click Workspace in the Items window to display the Create Workspace
window.
4.
Enter a name (for example, myWorkspace) in the Workspace Name field and
accept the default path in the Directory Name field.
5.
Deselect the Add a New Empty Project check box.
6.
Click OK.
7.
Right-click this new workspace in the Applications Navigator section.
8.
Select New Project.
9.
Double-click BPEL Process Project in the Items window to display the BPEL
Process Project window.
10. Enter Greeting in the BPEL Process Name field.
11. Select Synchronous BPEL Process from the Template list.
12. Leave the Use Default check box selected.
13. Click OK.
The bpel.xml, Greeting.bpel, and Greeting.wsdl files are created in the
Applications Navigator.
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4.8.4 Creating a Partner Link
1.
Ensure that Process Activities is selected in the drop-down list of the Component
Palette section in the upper right section of JDeveloper BPEL Designer.
2.
Drag and drop a PartnerLink activity onto the right side of the designer window
under the Partner Links header.
The Create Partner Link window appears.
3.
Enter Hello in the Name field.
4.
Click the third icon at the top (the Define Adapter Service icon). This starts the
Adapter Configuration Wizard.
5.
Click Next on the Welcome window.
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6.
Select Database Adapter on the Adapter Type window and click Next.
7.
Enter Hello in the Service Name field on the Service Name window. This is the
same name as that of the partner link.
8.
Click Next.
9.
Select the database connection in the Connection field on the Service Connection
page that you created for the scott schema in Section 4.8.2, &quot;Creating a Database
Connection&quot;.
10. Ensure that eis/DB/connection_name displays in the Database Server JNDI Name
field. The connection_name is the name you selected in the Connection field and
the connection to the scott schema that you created in Section 4.8.2, &quot;Creating a
Database Connection&quot;. The name is case sensitive. Ensure that it correctly matches
the case of the connection name.
11. Click Next.
12. Select Call a Stored Procedure or Function on the Operation Type window.
13. Click Next.
The Specify Stored Procedure window appears.
14. Click Browse to the right of the Procedure field.
The Stored Procedures window appears.
15. Leave &lt;Default Schema&gt; selected in the Schema list. This defaults to the scott
schema in which the stored procedure is defined.
16. Select Hello in the Stored Procedures navigation tree.
Note: As an alternative, you can also enter Hello in the Search field,
click Search to display this stored procedure for selection in the
Stored Procedures navigation tree, and then select it.
The Arguments tab displays the parameters of the stored procedure.
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17. Click the Source tab to display the Hello stored procedure source code. You
entered this syntax when you created the stored procedure using SQL*Plus in
Section 4.8.1, &quot;Creating a Stored Procedure&quot;.
18. Click OK.
The Specify Stored Procedure window displays your selections. They appear as
they did when the Arguments tab displayed in the Stored Procedures window in
Step 16.
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19. Click Next.
20. Click Finish to complete adapter configuration.
The Create Partner Link window is automatically completed. The window looks
as follows:
Field
Value
Name
Hello
WSDL File
file:/c:/OraBPELPM/integration/jdev/jdev/mywork/myWorkspace/Gre
eting/Hello.wsdl
Note: OraBPELPM is the Oracle home directory used in this example.
In addition, this directory path with a drive letter represents an
example on Windows operating systems. If running this tutorial on
Unix operating systems, your directory path varies.
Partner Link Type
Hello_plt
My Role
Leave unspecified.
Partner Role
Hello_role
21. Click Apply.
22. Click OK.
23. Select Save All from the File main menu.
The following files appear under Greeting &gt; Integration Content in the
Applications Navigator. These files contain the parameters you specified with the
Adapter Configuration Wizard.
■
Hello.wsdl
Corresponds with the new stored procedure partner link
■
SCOTT_HELLO.xsd
Provides the definition of the stored procedure, including its parameters
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4.8.5 Creating an Invoke Activity
You now create an invoke activity to specify an operation you want to invoke for the
service (identified by the Hello partner link).
1.
Drag and drop an invoke activity below the receiveInput Receive activity.
2.
Double-click the invoke activity to display the Invoke window.
3.
Enter the following details:
Field
Value
Name
Greet
Partner Link
Hello
The Operation (Hello) field is automatically filled in.
4.
Click the first icon to the right of the Input Variable field. This is the automatic
variable creation icon.
A variable named Greet_Hello_InputVariable automatically appears in the Name
field. This variable provides the value for the in parameter of the stored
procedure. The type is http://xmlns.oracle.com/pcbpel/adapter/db/Hello/}args_
in_msg.
5.
Ensure that Global Variable is selected.
6.
Click OK on the Create Variable window.
7.
Click the first icon to the right of the Output Variable field.
8.
A variable named Greet_Hello_OutputVariable automatically appears in the
Name field. This variable stores the value of the out parameter of the procedure
after it executes. The type is
http://xmlns.oracle.com/pcbpel/adapter/db/Hello/}args_out_msg.
9.
Ensure that Global Variable is selected.
10. Click OK in the Create Variable window.
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Your selections for the Invoke window appear.
11. Click OK in the Invoke window.
12. Select Save All from the File main menu.
The process displays a link from the Greet Invoke activity to the Hello partner
link.
4.8.6 Creating an Initial Assign Activity
You now create an Assign activity to assign the input value to the in parameter of the
stored procedure.
1.
Drag and drop an Assign activity from the Component Palette section to above
the Greet Invoke activity.
2.
Double-click the assign icon to display the Assign window.
3.
Click the General tab.
4.
Enter Input in the Name field.
5.
Click Apply.
6.
Click the Copy Rules tab.
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7.
Click Create to display the Create Copy Rule window.
8.
Enter the following values:
Field
Value
From
■
Type
Variable
■
Variables
Expand and select Variables, then inputVariable, then payload, then
client:GreetingProcessRequest, and then client:input.
■
Type
Variable
■
Variables
Expand and select Variables, then Greet_Hello_InputVariable, then
InputParameters, then ns2:InputParameters, and then NAME.
To
The Create Copy Rule window appears as follows:
9.
Click OK to close the Create Copy Rule window.
10. Click OK to close the Assign window.
11. Select Save All from the File main menu.
4.8.7 Creating a Second Assign Activity
You now create an Assign activity to retrieve the value of the out parameter of the
stored procedure.
1.
Drag and drop an Assign activity from the Component Palette section to below
the Greet Invoke activity.
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2.
Double-click the assign icon to display the Assign window.
3.
Click the General tab.
4.
Enter Output in the Name field.
5.
Click Apply.
6.
Click the Copy Rules tab.
7.
Click Create to display the Create Copy Rule window.
8.
Enter the following values:
Field
Value
From
■
Type
Variable
■
Variables
Expand and select Variable, then Greet_Hello_OutputVariable, then
OutputParameters, then ns2:OutputParameters, and then GREETING.
■
Type
Variable
■
Variables
Expand and select Variables, then outputVariable, then payload, then
client:GreetingProcessResponse, and then client:result.
9.
Click OK to close the Create Copy Rule window.
To
10. Click OK to close the Assign window.
The Greeting process appears as follows in JDeveloper BPEL Designer.
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11. Select Save All from the File main menu.
4.8.8 Validating, Compiling, and Deploying the Greeting Process
1.
Go to the Applications Navigator section.
2.
Right-click Greeting.
3.
Select Deploy, then LocalBPELServer, and then Deploy to default domain.
4.
Enter the domain password (initially set to bpel) when prompted.
5.
Click OK.
This compiles the BPEL process. Review the bottom of the window for any errors.
If there are no errors, deployment was successful.
4.8.9 Running the Greeting Process
1.
Log in to Oracle BPEL Console using Internet Explorer by selecting Start, then All
Programs, then Oracle - Oracle_Home, then Oracle BPEL Process Manager 10.1.2,
and then BPEL Console, or by running the $ORACLE_
HOME/integration/orabpel/bin/startorabpel.sh script for UNIX.
2.
Enter the password (initially set to bpel) when prompted.
The Dashboard tab of Oracle BPEL Console appears. Note that your BPEL
process, Greeting, now appears in the Deployed BPEL Processes list.
3.
Click Greeting.
The Testing this BPEL Process page appears with the Initiate tab selected.
4.
Enter your first name in the input field (for example, John).
5.
Click Post XML Message.
After the procedure executes and the BPEL process finishes the value appears as
follows:
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Value:
6.
&lt;GreetingProcessResponse&gt;
&lt;result&gt;Hello John&lt;result&gt;
&lt;/GreetingProcessResponse&gt;
Click Audit Instance.
The Instances tab of Oracle BPEL Console appears, along with the sequence of
process activities.
7.
Click More... on the Greet activity to see the input to and output from the stored
procedure.
Note the &lt;NAME&gt; tag and its value in the &lt;InputParameters&gt; element. This
value came from the inputVariable and was set by the Input Assign activity.
Note the &lt;GREETING&gt; tag and its value in the &lt;OutputParameters&gt; element.
This value came from the output parameter of the stored procedure. The value
was then assigned to the outputVariable by the Output Assign activity.
8.
Click the Flow tab to view the process flow.
The process diagram appears.
9.
Click any of the activities to view the XML as it passed through the BPEL process.
For example, click the Greet Invoke activity to display the following:
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Summary
4.9 Summary
This chapter describes how to use the database adapter to communicate with Oracle
and third-party databases. The Adapter Configuration Wizard and advanced
configuration capabilities are explained, as is support for stored procedures and
functions. A use case is also provided that describes how to create and configure a
stored procedure in JDeveloper BPEL Designer.
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5
Oracle Application Server Adapter for Java
Message Service
This chapter describes how to use the Oracle Application Server Adapter for Java
Message Service (JMS adapter), which enables a BPEL process to interact with JMS.
This chapter contains the following topics:
■
Section 5.1, &quot;Introduction to the JMS Adapter&quot;
■
Section 5.2, &quot;JMS Adapter Features&quot;
■
Section 5.3, &quot;Use Cases for the JMS Adapter&quot;
■
Section 5.4, &quot;Summary&quot;
5.1 Introduction to the JMS Adapter
The JMS architecture uses one client interface to many messaging servers. The JMS
model has two messaging domains: point-to-point and publish-subscribe. In the
point-to-point domain, messages are exchanged through a queue and each message is
delivered to only one receiver. In the publish-subscribe model, messages are sent to a
topic and can be read by many subscribed clients. For JMS adapter example files, go to
Oracle_Home\integration\orabpel\samples\tutorials\123.JmsAdapter
5.2 JMS Adapter Features
The JMS adapter includes the following features:
■
■
■
■
■
■
Based on JMS version 1.0.2b
Is a generic JMS adapter and can work with any JMS provider. It has been certified
against OC4J JMS, Oracle JMS (OJMS based on advanced queuing (AQ)), TIBCO
JMS, and IBM Websphere MQSeries. (JMS providers OJMS 8.1.7, 9.0.1.4, and 9.2,
and IBM MQSeries JMS 5.2 and 5.3).
Supports JMS topics and queues
Supports byte and text message types only in this release. The Adapter
Configuration Wizard provides the Native Format Builder Wizard for consuming
native data payloads at run time. The Native Format Builder Wizard creates XSD
definitions for the underlying native data.
Supports JMS headers and properties
Supports the JMS message selector for performing filtering while subscribing to
JMS topics and queues. This parameter is based on the SQL 92 language for
Oracle Application Server Adapter for Java Message Service 5-1
Use Cases for the JMS Adapter
filtering messages based on fields present in the JMS header and properties
section.
■
Supports specifying a durable JMS subscriber
■
Supports persistent and nonpersistent modes of a JMS publisher
■
The JMS API specifies three types of acknowledgments that can be sent by the JMS
publisher:
–
DUPS_OK_ACKNOWLEDGE, for consumers that are not concerned about
duplicate messages
–
AUTO_ACKNOWLEDGE, in which the session automatically acknowledges the
receipt of a message
–
CLIENT_ACKNOWLEDGE, in which the client acknowledges the message by
calling the message's acknowledge method
A transaction enables an application to coordinate a group of messages for production
and consumption, treating messages sent or received as a single unit. When an
application commits a transaction, all messages it received within the transaction are
removed by the JMS provider. The messages it sent within the transaction are
delivered as one unit to all JMS consumers. If the application rolls back the transaction,
the messages it received within the transaction are returned to the messaging system
and the messages it sent are discarded. The JMS adapter supports JMS transactions. A
JMS-transacted session supports transactions that are located within the session. A
JMS-transacted session's transaction does not have any effects outside of the session.
See Oracle Application Server Adapter Concepts for information on JMS adapter
architecture, adapter integration with Oracle BPEL Process Manager, and adapter
deployments.
5.3 Use Cases for the JMS Adapter
The following use cases demonstrate the procedure for configuring a JMS adapter and
examine the resulting WSDL files and associated oc4j-ra.xml files.
5.3.1 Concepts
Messaging is any mechanism that allows communication between programs.
Messages are structured data that one application sends to another. Message-oriented
middleware (MOM) is an infrastructure that supports scalable enterprise messaging.
MOM ensures fast, reliable asynchronous communication, guaranteed message
delivery, receipt notification, and transaction control. JMS is a Java interface developed
by Sun Microsystems for producing, sending, and receiving messages of an enterprise
messaging system. JMS is an API that JMS vendors implement. Oracle provides two
implementations of JMS: OC4J JMS and Oracle JMS based on Oracle advanced queues.
A JMS producer creates JMS messages and a JMS consumer consumes JMS messages.
JMS supports two messaging paradigms: point-to-point (queues) and
publish/subscribe (topics).
Point-to-Point
In point-to-point messaging, the messages are stored in a queue until they are
consumed. One or more producers write to the queue and one or more consumers
extract messages from the queue. The JMS consumer sends an acknowledgment after
consumption of a message; this results in purging of the message from the queue.
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Publish/Subscribe
In publish/subscribe messaging, producers publish messages to a topic and the
consumer subscribes to a particular topic. Many publishers can publish to the same
topic, and many consumers can subscribe to the same topic. All messages published to
the topic by the producers are received by all consumers subscribed to the topic. By
default, subscribers receive messages only when they are active. However, JMS API
supports durable subscriptions that ensure that consumers receive messages that were
published even when they are not up and running. The durable subscription involves
registering the consumer with a unique ID for retrieving messages that were sent
when the consumer was inactive. These messages are persisted by the JMS provider
and are either sent to the consumer when it becomes active again or purged from
storage if the message expires. The JMS producer can be set either to persistent or
nonpersistent mode. The messages are not persisted in the latter case and can be used
only for nondurable subscriptions.
Note: JMS adapter does not remove durable subscriptions after the
BPEL partner link, which was using a particular durable subscription,
is no longer using it. You need to remove the durable subscribers
manually.
The JMS API supports both synchronous or asynchronous communication for message
consumption. In the synchronous case, the consumer explicitly calls the receive()
method on the topic or queue. In the asynchronous case, the JMS client registers a
message listener for the topic or queue and the message is delivered by calling the
listener's onMessage() method.
Destination, Connection, Connection Factory, and Session
The destination property contains the addressing information for a JMS queue or
topic.
Connections represent a physical connection to the JMS provider. The connection
factory is used to create JMS connections. A session is used to create a destination, JMS
producer, and JMS consumer objects for a queue or topic.
Structure of a JMS Message
The JMS message has a mandatory standard header element, optional properties
element, and optional standard payload element. The payload can be a text message,
byte message, map message, stream message, or object message. The properties
element is JMS provider-specific and varies from one JMS provider to another.
JMS Header Properties
Table 5–1 describes the JMS header properties.
Table 5–1
JMS Header Properties
Property Name
Description
JMSDestination
The destination to which the message is sent, and is set by the
JMS producer
JMSDeliveryMode
Set to persistent or nonpersistent mode by the JMS consumer
JMSExpiration
Duration of the message before the expiration is set by the
consumer
JMSPriority
Number between 0 and 9 set by the consumer. Larger numbers
represent a higher priority.
Oracle Application Server Adapter for Java Message Service 5-3
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Table 5–1 (Cont.) JMS Header Properties
Property Name
Description
JMSMessageID
Unique message identifier set by the consumer
JMSTimestamp
Time stamp when the message was sent to the JMS provider for
forwarding
JMSCorrelationId
Set by both producers and consumers for linking the response
message with the request message. This is an optional attribute.
JMSReplyTo
Optional attribute indicating the destination to which to send a
message reply. Can be set by the producer and consumer.
JMSType
JMS message type
JMSRedelivered
Set by the JMS provider to indicate that the provider has tried to
send this message once before to the consumer and has failed
5.3.2 Using the Adapter Configuration Wizard to Configure a JMS Adapter
This section describes how to create an adapter service for a partner link.
1.
Click Define Adapter Service (third icon) in the Create Partner Link window, as
shown in Figure 5–1:
Figure 5–1 Create Partner Link Window
The Adapter Configuration Wizard - Welcome window appears.
2.
If you do not want to see this window each time you use the Adapter
Configuration Wizard, select the Skip this Page Next Time check box. Then click
Next.
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Figure 5–2 Welcome Window for the Adapter Configuration Wizard
3.
Select JMS Adapter from the list of available adapter types and click Next.
Figure 5–3 Adapter Type Window
The Service Name window appears.
4.
Enter a name for the service. You may also add an optional description. Click
Next.
Oracle Application Server Adapter for Java Message Service 5-5
Use Cases for the JMS Adapter
Figure 5–4 Service Name Window
The JMS Connection window appears.
5.
Enter the JMS connection JNDI name and click Next.
Figure 5–5 JMS Connection Window
The JNDI name is key in determining the JMS type. The name
must match an endpoint in the oc4j-ra.xml file, which defines the
configuration properties.
Note:
See Section 5.3.4, &quot;oc4j-ra.xml file&quot; for more information.
The Operation window appears.
6.
Select Consume Message or Produce Message. The operation name is filled in
automatically. Click Next.
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Figure 5–6 Operation Window
In this case, Consume Message was selected. This enables the adapter to consume
(receive) inbound messages from a JMS destination. The Consume Operation
Parameters window appears.
7.
Enter values for the following fields:
■
Destination Name
The JNDI name of the JMS queue or topic from which to receive the message.
The name to enter is based on the type of JMS provider you are using. See the
following sections for details:
■
–
Section 5.3.6, &quot;Configuring for OJMS&quot;
–
Section 5.3.7, &quot;Configuring for OC4J JMS&quot;
–
Section 5.3.8, &quot;Configuring for TIBCO JMS&quot;
–
Section 5.3.9, &quot;Configuring for IBM Websphere JMS&quot;
Message Body Type
Select either TextMessage or BytesMessage.
The StreamMessage and MapMessage message types are not supported in
this release.
■
Durable Subscriber ID
This field is optional. If you are setting up a durable subscriber, then the
durable subscriber ID is required. Normally a subscriber loses messages if it
becomes disconnected, but a durable subscriber downloads stored messages
when it reconnects.
■
Message Selector
This field is also optional. It filters messages based on header and property
information. The message selector rule is a Boolean expression. If the
expression is true, then the message is consumed. If the expression is false,
then the message is rejected.
For example, you can enter logic such as:
Oracle Application Server Adapter for Java Message Service 5-7
Use Cases for the JMS Adapter
■
–
JMSPriority &gt; 3. Based on this, messages with a priority greater than 3 are
consumed; all other messages are rejected.
–
JMSType = 'car' AND color = 'blue' AND weight &gt; 2500
–
Country in ('UK', 'US', 'France')
Use MessageListener
This field is set to true by default, which means that the server does an
asynchronous callback to the adapter. If this is set to false, the adapter
performs a synchronous blocking receive.
This example shows a consume message operation. For a
produce message operation, this window is different. See Section 5.3.5,
&quot;Produce Message Procedure&quot; to see how this part of the procedure
differs.
Note:
After you enter the appropriate parameters, click Next.
Figure 5–7 Consume Operation Parameters Window
8.
The Messages window appears. These settings define the correct schema for the
message payload.
You can perform one of the following:
■
■
■
Check Native format translation is not required (Schema is Opaque), which
disables the rest of the fields.
Click Define Schema for Native Format to start the Native Format Builder
Wizard, which guides you through the process of defining the native format.
Enter the path for the schema file URL (or browse for the path).
The following steps demonstrate the last option: browsing for the schema file
URL. Click the Browse button.
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Figure 5–8 Messages Window
The Type Chooser window appears, with the Type Explorer navigation tree.
9.
Browse the tree and select the appropriate schema type. Then click OK.
Figure 5–9 Selecting a Schema from the Type Chooser Window
The Messages window appears again, this time with the Schema File URL field
and the Schema Element field filled in.
Oracle Application Server Adapter for Java Message Service 5-9
Use Cases for the JMS Adapter
Figure 5–10 Completed Messages Window
10. Click Next.
The Finish window appears. This box shows the path and name of the adapter file
that the wizard creates.
11. Click Finish.
The Create Partner Link window appears with the fields populated.
Figure 5–11 Completed Create Partner Link Window
12. Click OK.
5.3.3 Generated WSDL File
The following WSDL file is generated by the Adapter Configuration Wizard:
&lt;definitions
name=&quot;JMS_Example&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/jms/JMS_Example/&quot;
xmlns=&quot;http://schemas.xmlsoap.org/wsdl/&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/adapter/jms/JMS_Example/&quot;
xmlns:plt=&quot;http://schemas.xmlsoap.org/ws/2003/05/partner-link/&quot;
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xmlns:jca=&quot;http://xmlns.oracle.com/pcbpel/wsdl/jca/&quot;
xmlns:opaque=&quot;http://xmlns.oracle.com/pcbpel/adapter/opaque/&quot;
xmlns:pc=&quot;http://xmlns.oracle.com/pcbpel/&quot;
xmlns:hdr=&quot;http://xmlns.oracle.com/pcbpel/adapter/jms/&quot;
&gt;
This code segment defines the name of the adapter, and the locations of various
necessary schemas and other definition files.
&lt;import namespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/jms/&quot;
location=&quot;jmsAdapterInboundHeader.wsdl&quot;/&gt;
This code segment imports the necessary namespace.
&lt;types&gt;
&lt;schema targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/adapter/opaque/&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot; &gt;
&lt;element name=&quot;opaqueElement&quot; type=&quot;base64Binary&quot; /&gt;
&lt;/schema&gt;
&lt;/types&gt;
&lt;message name=&quot;Consume_Message_msg&quot;&gt;
&lt;part name=&quot;opaque&quot; element=&quot;opaque:opaqueElement&quot;/&gt;
&lt;/message&gt;
&lt;portType name=&quot;Consume_Message_ptt&quot;&gt;
&lt;operation name=&quot;Consume_Message&quot;&gt;
&lt;input message=&quot;tns:Consume_Message_msg&quot;/&gt;
&lt;/operation&gt;
&lt;/portType&gt;
This code segment defines the message type, name, and the port type for the partner
link.
&lt;binding name=&quot;Consume_Message_binding&quot; type=&quot;tns:Consume_Message_ptt&quot;&gt;
&lt;pc:inbound_binding /&gt;
&lt;operation name=&quot;Consume_Message&quot;&gt;
&lt;jca:operation
ActivationSpec=&quot;oracle.tip.adapter.jms.inbound.JmsConsumeActivationSpec&quot;
DestinationName=&quot;jms/DemoQue&quot;
UseMessageListener=&quot;true&quot;
PayloadType=&quot;TextMessage&quot;
OpaqueSchema=&quot;true&quot; &gt;
&lt;/jca:operation&gt;
&lt;input&gt;
&lt;jca:header message=&quot;hdr:InboundHeader_msg&quot; part=&quot;inboundHeader&quot;/&gt;
&lt;/input&gt;
&lt;/operation&gt;
&lt;/binding&gt;
This code segment defines the necessary bindings for the consume message operation,
the target queue, and identifies the message header.
&lt;service name=&quot;JMS_Example2&quot;&gt;
&lt;port name=&quot;Consume_Message_pt&quot; binding=&quot;tns:Consume_Message_binding&quot;&gt;
&lt;jca:address location=&quot;eis/Jms/topics.xml&quot; /&gt;
&lt;/port&gt;
&lt;/service&gt;
&lt;plt:partnerLinkType name=&quot;Consume_Message_plt&quot; &gt;
&lt;plt:role name=&quot;Consume_Message_role&quot; &gt;
&lt;plt:portType name=&quot;tns:Consume_Message_ptt&quot; /&gt;
&lt;/plt:role&gt;
&lt;/plt:partnerLinkType&gt;
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Use Cases for the JMS Adapter
&lt;/definitions&gt;
This last part defines the database connection, the connection factory (as defined in the
oc4j-ra.xml file), and the name and role of the partnerLinkType and portType.
5.3.4 oc4j-ra.xml file
The oc4j-ra.xml file defines the endpoints for the JMS connection factories. The
connection factories include configuration properties for each endpoint. Endpoints are
added to accommodate different types of connections, as demonstrated in the
following sections. The following example is from the generic oc4j-ra.xml file:
&lt;?xml version=&quot;1.0&quot;?&gt;
&lt;!DOCTYPE oc4j-connector-factories PUBLIC &quot;-//Oracle//DTD Oracle Connector
9.04//EN&quot; &quot;http://xmlns.oracle.com/ias/dtds/oc4j-connector-factories-9_04.dtd&quot;&gt;
&lt;oc4j-connector-factories&gt;
&lt;connector-factory location=&quot;eis/MyJmsTopic1&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;jms/TopicConnectionFactory&quot;/&gt;
&lt;config-property name=&quot;factoryProperties&quot; value=&quot;&quot;/&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot;/&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;true&quot;/&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot;/&gt;
&lt;config-property name=&quot;username&quot; value=&quot;admin&quot;/&gt;
&lt;config-property name=&quot;password&quot; value=&quot;welcome&quot;/&gt;
&lt;/connector-factory&gt;
&lt;connector-factory location=&quot;eis/MyJmsTopic2&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
...
&lt;/oc4j-connector-factories&gt;
5.3.5 Produce Message Procedure
A produce message operation has certain differences in the definition procedure,
particularly in Step 7 of Section 5.3.2, &quot;Using the Adapter Configuration Wizard to
Configure a JMS Adapter&quot;. Instead of specifying consume operation parameters, you
specify the following produce operation parameters. This enables the adapter to
produce (send) outbound messages for a JMS destination. The Produce Operation
Parameters window is shown in Figure 5–12.
■
Destination Name:
The JNDI name of the JMS queue or topic to which to deliver the message. The
name to enter is based on the type of JMS provider you are using. See the
following sections for detail:
■
–
Section 5.3.6, &quot;Configuring for OJMS&quot;
–
Section 5.3.7, &quot;Configuring for OC4J JMS&quot;
–
Section 5.3.8, &quot;Configuring for TIBCO JMS&quot;
–
Section 5.3.9, &quot;Configuring for IBM Websphere JMS&quot;
Message Body Type:
The supported values are TextMessage or BytesMessage. The StreamMessage
and MapMessage message types are not supported in this release.
■
Delivery Mode:
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The values are Persistent or Nonpersistent. A persistent delivery mode specifies a
persistent JMS publisher; that is, a publisher that stores messages for later use by a
durable subscriber. A durable subscriber is a consume message with a durable
subscriber ID in the corresponding field in Step 7 of Section 5.3.2, &quot;Using the
Adapter Configuration Wizard to Configure a JMS Adapter&quot;. A nondurable
subscriber loses any messages that are produced when the adapter is not active. A
durable subscriber downloads messages that have been stored in the persistent
publisher, and therefore does not have to remain active at all times to receive all
the messages.
■
Priority:
Select a priority value, with 9 representing the highest priority and 0 representing
the lowest priority. The default is 4.
■
TimeToLive:
The amount of time before the message expires and is no longer available to be
consumed.
Figure 5–12 Produce Operation Parameters Window
5.3.6 Configuring for OJMS
Configure the OJMS provider within the resource-provider element in the global
application.xml file. You can configure the resource provider with a URL
property. The following demonstrates a URL configuration:
&lt;resource-provider class=&quot;oracle.jms.OjmsContext&quot; name=&quot;ojmsdemo&quot;&gt;
&lt;description&gt;OJMS/AQ&lt;/description&gt;
&lt;property name=&quot;url&quot; value=&quot;jdbc:oracle:thin:@localhost:1521:my&quot; /&gt;
&lt;property name=&quot;username&quot; value=&quot;jmsuser&quot; /&gt;
&lt;property name=&quot;password&quot; value=&quot;jmsuser&quot; /&gt;
&lt;/resource-provider&gt;
In the oc4j-ra.xml file, add the following code segments:
&lt;connector-factory location=&quot;eis/aqjms/Topic&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;java:comp/resource/ojmsdemo/TopicConnectionFactories/myTCF&quot; /&gt;
&lt;config-property name=&quot;factoryProperties&quot; value=&quot;&quot; /&gt;
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Use Cases for the JMS Adapter
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot; /&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;username&quot; value=&quot;jmsuser&quot; /&gt;
&lt;config-property name=&quot;password&quot; value=&quot;jmsuser&quot; /&gt;
&lt;/connector-factory&gt;
&lt;connector-factory location=&quot;eis/aqjms/Queue&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot; value=&quot;
java:comp/resource/ojmsdemo/QueueConnectionFactories/myQCF&quot; /&gt;
&lt;config-property name=&quot;factoryProperties&quot; value=&quot;&quot; /&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot; /&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;false&quot; /&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;username&quot; value=&quot;jmsuser&quot; /&gt;
&lt;config-property name=&quot;password&quot; value=&quot;jmsuser&quot; /&gt;
&lt;/connector-factory&gt;
In this case, correct JMS connection JNDI names for Step 5 of Section 5.3.2, &quot;Using the
Adapter Configuration Wizard to Configure a JMS Adapter&quot; are eis/aqjms/Topic
or eis/aqjms/Queue.
Set the isTransacted value in the oc4j-ra.xml file to true. Setting it to false
leads to exception errors.
Access the OJMS Resources
The OJMS syntax for the connection factory is as follows:
java:comp/resource + JMS_provider_name + TopicConnectionFactories + user_defined_
name
or
java:comp/resource + JMS_provider_name + QueueConnectionFactories + user_defined_
name
The user_defined_name can be anything and does not match any other
configuration. The ConnectionFactories details what type of factory is being
defined. For this example, the JMS provider name is defined in the
resource-provider element as ojmsdemo.
For a queue connection factory: Because the JMS provider name is ojmsdemo and you
decide to use a name of myQCF, the connection factory name is
java:comp/resource/ojmsdemo/QueueConnectionFactories/myQCF.
For a topic connection factory: Because the JMS provider name is ojmsdemo and you
decide to use a name of myTCF, the connection factory name is
java:comp/resource/ojmsdemo/TopicConnectionFactories/myTCF.
The user-defined names of myQCF and myTCF are not used for anything else in your
logic. Therefore, you can choose any name.
Destination
The OJMS syntax for any destination is as follows:
java:comp/resource + JMS_provider_name + Topics + Destination_name
or
java:comp/resource + JMS_provider_name + Queues + Destination_name
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The topic or queue details which type of destination is being defined. The destination
name is the actual queue or topic name defined in the database.
For this example, the JMS provider name is defined in the resource-provider
element as ojmsdemo. In the database, the queue name is aqQueue.
For a queue: If the JMS provider name is ojmsdemo and the queue name is aqQueue,
the JNDI name for the queue is
java:comp/resource/ojmsdemo/Queues/aqQueue.
For a topic: If the JMS provider name is ojmsdemo and the topic name is aqTopic,
the JNDI name for the topic is
java:comp/resource/ojmsdemo/Topics/aqTopic.
OJMS and Remote Databases
To configure the adapter to use a remote database, the entries in the
application.xml file must look as follows:
&lt;resource-provider class=&quot;oracle.jms.OjmsContext&quot; name=&quot;ojmsdemo&quot;&gt;
&lt;description&gt;OJMS/AQ&lt;/description&gt;
&lt;property name=&quot;url&quot;
value=&quot;jdbc:oracle:thin:@remote-host:remote-port:remote-sid&quot; /&gt;
&lt;property name=&quot;username&quot; value=&quot;jmsuser&quot; /&gt;
@ &lt;property name=&quot;password&quot; value=&quot;jmsuser&quot; /&gt;
&lt;/resource-provider&gt;
5.3.7 Configuring for OC4J JMS
If the OC4J JMS server is running on another remote host, you can configure the JMS
adapter to talk to the server by using the following connector entry. Note that the only
difference with this connector entry is in the factory properties. The factory properties
can establish a JNDI context for the adapter. Substitute [hostname] with the
hostname of the server on which the OC4J JMS server is running. If the RMI port of the
remote OC4J instance is not the default value (23791), you must specify the RMI port
in the provider URL (that is, ormi://remotehost.domain.com:23795).
&lt;connector-factory location=&quot;eis/RemoteOC4JJMS/Queue&quot; connector-name=&quot;Jms
Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;jms/QueueConnectionFactory&quot; /&gt;
&lt;config-property name=&quot;factoryProperties&quot;
value=&quot;java.naming.factory.initial=com.evermind.server.ApplicationClientInitialCon
textFactory;java.naming.provider.url=ormi://[hostname];
java.naming.security.principal=admin;java.naming.security.credentials=welcome&quot; /&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot; /&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;false&quot; /&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;username&quot; value=&quot;admin&quot; /&gt;
&lt;config-property name=&quot;password&quot; value=&quot;welcome&quot; /&gt;
&lt;/connector-factory&gt;
In this case, the correct JMS connection JNDI name for Step 5 of Section 5.3.2, &quot;Using
the Adapter Configuration Wizard to Configure a JMS Adapter&quot; is
eis/RemoteOC4JJMS/Queue.
In addition, you must have the file META-INF/application-client.xml in the
classpath. The contents of the file can be the following:
&lt;application-client/&gt;
Oracle Application Server Adapter for Java Message Service 5-15
Use Cases for the JMS Adapter
To put this file in the classpath, put the specified contents into the file at Oracle_
Home\integration\orabpel\system\classes\META-INF\application-cli
ent.xml and restart Oracle BPEL Server.
If you set isTransacted to true in the oc4j-ra.xml file for an outbound
connection, you receive an error. Do not set this value to true for outbound
connections.
Destination Name
The destination name for OC4J JMS is either a JNDI location (for example,
jms/demoQueue or jms/demoTopic) or the actual name of the destination as
configured in jms.xml (for example, Demo Queue or Demo Topic).
5.3.8 Configuring for TIBCO JMS
The BPEL OC4J application.xml file should contain the following jar file, where
Tibco EMS is installed in C:\tibco\ems. The JMS and JNDI jar files are already
present in the classpath and do not need to be included.
&lt;library path=”C:\tibco\ems\clients\java\tibjms.jar” /&gt;
Create the appropriate endpoints for the JMS connection factories in oc4j-ra.xml.
After this change is made, restart Oracle BPEL Server. Here are the appropriate code
segments. You can modify the necessary parameters and use this for your purpose:
&lt;connector-factory location=&quot;eis/tibjms/Topic&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;TopicConnectionFactory&quot; /&gt;
&lt;config-property name=&quot;factoryProperties&quot;
value=&quot;java.naming.factory.initial=com.tibco.tibjms.naming.TibjmsInitialContextFac
tory;java.naming.provider.url=tibjmsnaming://localhost:7222;java.naming.security.p
rincipal=admin;java.naming.security.credentials=password&quot; /&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot; /&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;username&quot; value=&quot;admin&quot; /&gt;
&lt;config-property name=&quot;password&quot; value=&quot;password&quot; /&gt;
&lt;/connector-factory&gt;
&lt;connector-factory location=&quot;eis/tibjms/Queue&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;QueueConnectionFactory&quot; /&gt;
&lt;config-property name=&quot;factoryProperties&quot;
value=&quot;java.naming.factory.initial=com.tibco.tibjms.naming.TibjmsInitialContextFac
tory;java.naming.provider.url=tibjmsnaming://localhost:7222;java.naming.security.p
rincipal=admin;java.naming.security.credentials=password&quot; /&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot; /&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;false&quot; /&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;username&quot; value=&quot;admin&quot; /&gt;
&lt;config-property name=&quot;password&quot; value=&quot;password&quot; /&gt;
&lt;/connector-factory&gt;
In this case, correct JMS connection JNDI names for Step 5 of Section 5.3.2, &quot;Using the
Adapter Configuration Wizard to Configure a JMS Adapter&quot; are eis/tibjms/Topic
or eis/tibjms/Queue.
When using Tibco JMS, always set the ClientID property as follows in the Oracle_
Home\integration\orabpel\system\appserver\oc4j\j2ee\home\applica
tion-deployments\default\FtpAdapter\oc4j-ra.xml file:
5-16 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
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&lt;config-property name=&quot;factoryProperties&quot;
value=&quot;ClientID=clientId{time}&quot;/&gt;
The substring {time} instructs the run time to replace it with the value of Java
System.currentTimeMillis(). The other supported substitutions are:
■
{checksum}
A checksum based on the values of the oc4j-ra.xml connection factory
properties (referenced through jca:address).
■
{sequence}
Next member of an increasing series of integers starting at zero.
These settings enable you to specify a fixed or a variable ClientID in oc4j-ra.xml.
5.3.8.1 Direct Connection
A direct connection can also be defined instead of the JNDI connection. A direct
connection is necessary for the Solaris middle tier. Use the following direct connection
entry in the oc4j-ra.xml file, instead of the JNDI entry.
&lt;connector-factory location=&quot;eis/tibjmsDirect/Topic&quot; connector-name=&quot;Jms
Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;com.tibco.tibjms.TibjmsTopicConnectionFactory&quot;/&gt;
&lt;config-property name=&quot;factoryProperties&quot;
@ value=&quot;ServerUrl=tcp://152.69.159.188:7222;UserName=admin;UserPassword=passwor
d&quot;/&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot;/&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;true&quot;/&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot;/&gt;
&lt;config-property name=&quot;username&quot; value=&quot;admin&quot;/&gt;
@ &lt;config-property name=&quot;password&quot; value=&quot;password&quot;/&gt;
&lt;/connector-factory&gt;
Destination Name
The destination name is the name of the topic or queue as listed in the Tibco JMS
server. For example, the sample queue is called queue.sample while the sample
topic is called topic.sample.
When you need to distinguish between a queue or topic, you can prefix the name with
either $topics: or $queues: depending on the type of destination. For example, the
destination name $queues:common refers to a queue that is distinct from the topic
called $topics:common. Note that you must escape the $ character in the .wsdl file
for the partner link because the adapter framework processes the $ as a special
character. The escape character is the backslash (\).
5.3.9 Configuring for IBM Websphere JMS
The BPEL OC4J application.xml file should contain the following jar files,
assuming MQ Series is installed in the C:\mqseries directory.
&lt;library path=&quot;C:\mqseries\java\lib\com.ibm.mq.jar&quot; /&gt;
&lt;library path=&quot;C:\mqseries\java\lib\com.ibm.mqjms.jar&quot; /&gt;
Create the appropriate endpoints for the JMS connection factories in oc4j-ra.xml.
After this change is made, you must restart Oracle BPEL Server. Here are the
appropriate code segments. You can modify the necessary parameters and use this for
your purpose.
Oracle Application Server Adapter for Java Message Service 5-17
Summary
&lt;connector-factory location=&quot;eis/mqseries/Queue&quot; connector-name=&quot;Jms Adapter&quot;&gt;
&lt;config-property name=&quot;connectionFactoryLocation&quot;
value=&quot;com.ibm.mq.jms.MQQueueConnectionFactory&quot; /&gt;
&lt;config-property name=&quot;factoryProperties&quot;
value=&quot;QueueManager=my.queue.manager;TransportType=1;HostName=myhost.com;Port=1414
;Channel=MYCHANNEL&quot; /&gt;
&lt;config-property name=&quot;acknowledgeMode&quot; value=&quot;AUTO_ACKNOWLEDGE&quot; /&gt;
&lt;config-property name=&quot;isTopic&quot; value=&quot;false&quot; /&gt;
&lt;config-property name=&quot;isTransacted&quot; value=&quot;true&quot; /&gt;
&lt;config-property name=&quot;username&quot; value=&quot;MUSR_MQADMIN&quot; /&gt;
&lt;config-property name=&quot;password&quot; value=&quot;password&quot; /&gt;
&lt;/connector-factory&gt;
In this case, the correct JMS connection JNDI name for Step 5 of Section 5.3.2, &quot;Using
the Adapter Configuration Wizard to Configure a JMS Adapter&quot; is
eis/mqseries/Queue.
Destination Name
The destination name is the name of the topic or queue listed in your MQ Series
configuration. For example, the name of the queue can be
queue:///MYQUEUE?targetClient=1.
5.4 Summary
This chapter describes how to use the Adapter Configuration Wizard to configure a
JMS adapter, the options available for this adapter, and how to configure adapters for
different application servers.
5-18 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
6
Native Format Builder Wizard
This chapter describes the Native Format Builder Wizard, which enables you to create
native schemas used for translation. Use cases and constructs for the schema are also
provided.
This chapter contains the following topics:
■
Section 6.1, &quot;Creating Native Schema Files with the Native Format Builder Wizard&quot;
■
Section 6.2, &quot;Understanding Native Schema&quot;
■
Section 6.3, &quot;Native Schema Constructs&quot;
■
Section 6.4, &quot;Summary&quot;
6.1 Creating Native Schema Files with the Native Format Builder Wizard
Oracle BPEL Process Manager requires native schemas for translation, which are based
on XML schema. However, not all commonly used formats use XML schema files. To
address this situation, Oracle BPEL Process Manager provides the Native Format
Builder Wizard. This wizard is accessible from the Define Schema for Native Format
button of the Messages window of the Adapter Configuration Wizard shown in
Figure 6–1. The Messages window is the last window to display in the Adapter
Configuration Wizard prior to the Finish window.
Figure 6–1 Starting the Native Format Builder Wizard
Native Format Builder Wizard 6-1
Creating Native Schema Files with the Native Format Builder Wizard
6.1.1 Supported Formats
The Native Format Builder Wizard guides you through the creation of a native schema
file from the following formats shown in Figure 6–2. A sample data file format for the
selected type must already exist; you cannot create a native schema without one. You
can also select to modify an existing native schema previously created with this
wizard, except for those generated from a DTD or COBOL Copybook.
Figure 6–2 Native Format Builder Wizard
6.1.1.1 Delimited (such as CSV files)
This option enables you to create native schemas for records, where the fields are
separated by a value such as a comma or pound sign.
6.1.1.2 Fixed Length (Positional)
This option enables you to create native schemas for records, where the fields are all
fixed lengths.
6.1.1.3 DTD
This option enables you to generate native schema from the user-supplied DTD.
6.1.1.4 COBOL Copybook
This option enables you to generate native schema from the user-supplied COBOL
Copybook definition.
A COBOL mainframe application typically uses a COBOL Copybook file to define its
data layout. The converter creates a native schema from a copybook such that the
runtime translator can parse the associated data file.
A COBOL Copybook is typically a collection of group items (structures). These group
items contain other items, which can be groups or elementary items. Elementary items
are items that cannot be further subdivided. For example:
01 Purchase-Order
05 Buyer
10 BuyerName PIC X(5) USAGE DISPLAY.
6-2 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Creating Native Schema Files with the Native Format Builder Wizard
04 Seller
08 SellerName PICTURE XXXXX.
Purchase-order is a group item with two child group items (Buyer, Seller). The
numbers 01, 05, 04, and so on indicate the level of the group (that is, the hierarchy of
data within that group).
Groups can be defined that have different level-numbers for the same level in the
hierarchy. For example, Buyer and Seller have different level numbers, but are at
the same level in the hierarchy. A group item includes all group and elementary items
that follow it until a level number less than or equal to the level number of that group
is encountered.
Each of the group items (Buyer and Seller) has a child elementary item. The PIC or
PICTURE clause defines the data layout. For example, BuyerName defines an
alphanumeric type of size equal to five characters. SellerName has exactly the same
data layout as BuyerName.
Group items in COBOL can be mapped to elements in XML schema with the
complexType. Similarly, elementary items can be mapped to elements of type simple
type with certain native format annotations to help the run time translator parse the
corresponding data file.
For example, the Buyer item can be mapped to the following definition:
&lt;!--COBOL declaration : 05 Buyer--&gt;
&lt;element name=&quot;Buyer&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;!--COBOL declaration : 10 Name PIC X(5)--&gt;
&lt;element name=&quot;Name&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;5&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
User Inputs
You are expected to provide the following information:
■
■
■
■
■
Target namespace for the native schema to be generated
Character set of the host computer on which the data file was generated. By
default this is set to EBCDIC (ebcdic-cp-us).
Byte order of the host computer on which the data file was generated. By default
this is set to big endian.
Record delimiter, which is typically the newline character, or no delimiter, or any
user-supplied string
Container tag name for generated native schema. By default, this is set to
Root-Element.
COBOL Clauses
Table 6–1 describes COBOL clauses. The numeric types covered in Table 6–1 are stored
as one character per digit. Support for clauses is defined as follows:
■
Y indicates the clause is supported.
■
N indicates the clause is not supported.
■
I indicates the clause is ignored.
Native Format Builder Wizard 6-3
Creating Native Schema Files with the Native Format Builder Wizard
Table 6–1
COBOL Clauses (Numeric Types Stored as One Character Per Digit)
COBOL
Clause
Design Time Runtime Supported
Support
Support Synonyms Comments
PIC X(n)
Y
Y
XXX…
Alphanumeric – An allowable
character from the character set of the
computer. Each X corresponds to 1
byte.
PIC A(n)
Y
Y
AA…
Alphabetic – Any letter of the alphabet
or space. Each A corresponds to 1 byte.
PIC 9(n)
DISPLAY
Y
Y
9999…
Any character position that contains a
numeral. Each 9 is counted in the size
of the item.
OCCURS n
TIMES
Y
Y
Fixed length array
JUSTIFIED
Y
Y
For A and X types. Right justifies with
the space pad.
REDEFINES
Y
Y
Allows the same computer memory
area to be described by different data
items.
PIC
9(m)V9(n)
DISPLAY
Y
Y
Size = n+m bytes
OCCURS
DEPENDING
ON
Y
Y
BLANK WHEN
ZERO
I
I
Ignored
RENAMES
N
N
This is rarely seen in COBOL
Copybooks
INDEX
N
N
4-byte index
SYNCHRONIZE I
D
I
POINTER
N
N
Y
Y
SYNC
PROCEDURE-P
OINTER
FILLER
The numeric types covered in Table 6–1 are stored as one character per digit. Table 6–2
covers numeric types that are stored in a more efficient manner.
Table 6–2
COBOL Clauses (Numeric Types Stored More Efficiently)
COBOL
Clause
Design Time Runtime Supported
Support
Support Synonyms Comments
USAGE [IS]
Y
Y
PIC 9(n)
COMP
Y
Y
Both these keywords are optional.
COMPUTAT
IONAL,
BINARY,
COMP-4
Length varies with n:
■
n = 1-4 (2 bytes)
■
n = 5-9 (4 bytes)
■
n = 10-18 (8 bytes)
6-4 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Creating Native Schema Files with the Native Format Builder Wizard
Table 6–2 (Cont.) COBOL Clauses (Numeric Types Stored More Efficiently)
COBOL
Clause
Design Time Runtime Supported
Support
Support Synonyms Comments
COMP-1
Y
Y
COMPUTAT
IONAL-1
Single precision, floating point number
that is 4 bytes long.
COMP-2
Y
Y
COMPUTAT
IONAL-2
Double precision, floating point
number that is 8 bytes long.
PIC 9(n)
COMP-3
Y
Y
PACKED-D
ECIMAL,
COMPUTAT
IONAL-3
Two digits are stored in each byte. An
additional half byte at the end is
allocated for the sign, even if the value
is unsigned.
PIC 9(n)
COMP-4
Y
Y
COMPUTAT
IONAL-4
Treated the same as a COMP type and
given its own data type in case custom
behavior must be added.
PIC 9(n)
COMP-5
N
N
PIC S9(n)
DISPLAY
Y
Y
PIC S9(n)
COMP
Y
Y
PIC S9(n)
COMP-3
Y
Y
PIC
9(m)V9(n)
COMP
Y
Y
Length is the same as COMP.
PIC
9(m)V9(m)
COMP-3
Y
Y
Length = Ceiling ((n+m+1)/2)
Capacity of the native binary
representation.
PIC S99…
Sign nibble in the right-most zone by
default. S is not counted in the size.
Same as COMP. Negative numbers are
represented as two’s complement.
The following clauses can be added to impact the sign position.
■
SIGN IS LEADING
Used with signed zoned numerics.
■
SIGN IS TRAILING
Used with signed zoned numerics.
■
SIGN IS LEADING SEPARATE
The character S is counted in the size
■
SIGN IS TRAILING SEPARATE
The character S is counted in the size
These assume that the numerics are stored using IBM COBOL
format. If these are generated for other platforms with different data
storage formats, a custom data handler for that type must be written.
Note:
Table 6–3 describes picture editing types.
Native Format Builder Wizard 6-5
Creating Native Schema Files with the Native Format Builder Wizard
Table 6–3
Edited Pictures
Edited Pictures
Supported Editing Types
Edited
alphanumeric
Simple Insertion: B(blank) 0 / ,
Edited float
numeric
Special insertion: . (period)
Edited numeric
■
■
■
Simple Insertion: B(blank) 0
/ ,
Special insertion: . (period)
Fixed Insertion: cs + - CR
DB (Inserts a symbol at the
beginning or end)
Unsupported Editing Types
■
Floating Insertion: cs + -
■
Zero suppression: Z *
■
Replacement insertion: Z * + c
Edited pictures are more for presentation purposes and are rarely seen in data files. It
is assumed that the editing symbols are also present in the data. For example, if you
have:
05
AMOUNT
PIC 999.99
Then this field is six bytes wide and has a decimal point in the data.
Simple, special, and fixed insertion are handled by this method. Floating insertion,
zero suppression, and replacement insertion are not supported.
6.1.2 Native Format Builder Wizard Windows
For delimited and fixed-length files, you are guided through windows that prompt
you for the following information to create definitions in native schema format:
■
The data file to sample (from which to create a native schema) and its encoding
■
The number of rows to skip and the number of rows to sample in the file
■
If the file contains multiple records, are they the same type or different types
■
The target namespace, container element name, and record name
■
■
The record delimiter (for example, end-of-line) and field delimiter (for example,
comma or pound sign) or field length
The field properties (such as name, datatype, delimiter, and length)
DTD and COBOL Copybook files already include definitions in their native formats.
For these formats, the Native Format Builder Wizard prompts you for the following
information to create native schema versions of these definitions.
■
■
The filename of the DTD or COBOL Copybook definition, namespace, and root
element
The character set, byte order, and records delimiter (for COBOL Copybook only)
As you move through the wizard windows, the native schema file being created
displays at the bottom. This enables you to watch the native schema file being built.
The final window displays the generated native schema for the native format shown in
Figure 6–3. You can edit this format before clicking Next.
6-6 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
Figure 6–3 Native Schema Generated From Native Format
When you click Finish, you are returned to the Messages window of the Adapter
Configuration Wizard shown in Figure 6–1. The Schema File URL and Schema
Element fields are filled in with details about your newly created native schema file.
You can now use the Adapter Configuration Wizard to create a WSDL file for the
adapter to communicate with your BPEL process.
6.2 Understanding Native Schema
This section provides use cases and explains various constructs of native schema to
translate the native format data to XML.
This section contains the following topics:
■
Use Cases for the Native Format Builder
■
Native Schema Constructs
Not all native schemas can be generated from the Native
Format Builder Wizard. This wizard can handle only basic scenarios.
This section describes the capabilities of the native schema using
various examples and use cases.
Note:
6.2.1 Use Cases for the Native Format Builder
This section contains the following topics:
■
Defining a Comma-Separated Value File Structure
■
Defining a * Separated Value File Structure
■
Defining a Fixed Length Structure
■
Defining a More Complex Structure - Invoice
■
COBOL Copybook
Native Format Builder Wizard 6-7
Understanding Native Schema
6.2.1.1 Defining a Comma-Separated Value File Structure
A comma-separated value (CSV) file is a common non-XML file structure. A CSV file
may or may not have the first few line as headers, in which case, you may want to
ignore them.
Native Data Format to Be Translated
The following native data format is provided:
Name,Street,City,State,Country
Oracle India Private Limited, Lexington Towers, Bangalore, Karnataka, India
Intel India Private Limited, Ring Road, Bangalore, Karnataka, India
Native Schema
The corresponding native schema definition can be defined as follows:
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
xmlns:tns=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:encoding=&quot;US-ASCII&quot;
nxsd:headerLines=&quot;1&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;xsd:element name=&quot;AddressBook&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element name=&quot;Address&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element name=&quot;Name&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; &gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Street&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; &gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;City&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; &gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;State&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; &gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Country&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; &gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
The nxsd:headerLines=&quot;1&quot; in this schema, at the xsd:schema construct, means
to skip one line in the native data before actually translating the rest of the data. This is
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because the first line is a header line. If set, nxsd:stream=&quot;chars&quot; means the data is
to be read as characters. If set, nxsd:stream=&quot;bytes&quot; means to read the native
data as bytes. For each of the element declarations, Name, Street, City, State,
Country, which have a corresponding scalar data, the nxsd:style=&quot;terminated&quot;
defines that the corresponding data is stored in terminated style. The actual terminator
is then defined by the nxsd:terminatedBy=&quot;,&quot; attribute specified at that construct.
See Section 6.2.2.2, &quot;Defining Terminated Data&quot; for details on the terminated style.
Translated XML Using the Native Schema
The native data using the corresponding native schema format is translated to the
following XML:
&lt;AddressBook xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Address&gt;
&lt;Name&gt;Oracle India Private Limited&lt;/Name&gt;
&lt;Street&gt;Lexington Towers&lt;/Street&gt;
&lt;City&gt;Bangalore&lt;/City&gt;
&lt;State&gt;Karnataka&lt;/State&gt;
&lt;Country&gt;India&lt;/Country&gt;
&lt;/Address&gt;
&lt;Address&gt;
&lt;Name&gt;Intel India Private Limited&lt;/Name&gt;
&lt;Street&gt;Ring Road&lt;/Street&gt;
&lt;City&gt;Bangalore&lt;/City&gt;
&lt;State&gt;Karnataka&lt;/State&gt;
&lt;Country&gt;India&lt;/Country&gt;
&lt;/Address&gt;
&lt;/AddressBook&gt;
6.2.1.2 Defining a * Separated Value File Structure
The use case defined in previous example is just one specific case of the *SV class,
where the wildcard can be substituted by any character or string (for example, for the
native data containing a + separated value).
Native Data Format to Be Translated
The following native data format is provided:
a+b+c+d+e
f+g+h+i+j
Native Schema
The corresponding native schema definition is similar to the one in the previous use
case except that in lieu of nxsd:terminatedBy=&quot;,&quot; you now define the terminated
by format as nxsd:terminatedBy=&quot;+&quot;. See Section 6.2.2.2, &quot;Defining Terminated
Data&quot; for details on the terminated style.
6.2.1.3 Defining a Fixed Length Structure
In this example, the native data used is the same as in the CSV case. The only
difference is that here the data is fixed length, and not CSV.
Native Data Format to Be Translated
The following native data format is provided:
Name
Oracle India Private Limited
Intel India Private Limited
Street
Lexington Towers
Outer Ring Road
City
State
Country
Bangalore Karnataka India
Bangalore Karnataka India
Native Format Builder Wizard 6-9
Understanding Native Schema
Native Schema
The corresponding native schema definition is similar to the definition of the CSV, but
the style now changes from nxsd:style=&quot;terminated&quot; to
nxsd:style=&quot;fixedLength&quot; along with the relevant attributes for the fixed length
style. For the style fixed length, the one mandatory attribute is the length:
nxsd:length. The value of nxsd:length is the actual length of the data to be read.
The complete definition for fixed length style for the native data to be translated can
be defined as follows:
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
xmlns:tns=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:encoding=&quot;US-ASCII&quot;
nxsd:headerLines=&quot;1&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;xsd:element name=&quot;AddressBook&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element name=&quot;Address&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element name=&quot;Name&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;31&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Street&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;19&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;City&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;10&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;State&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;10&quot;&gt;
&lt;/xsd:element&gt;
&lt;xsd:element name=&quot;Country&quot; type=&quot;xsd:string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot;&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
See Section 6.2.2.1, &quot;Defining Fixed Length Data&quot; for details on the fixed length style.
6.2.1.4 Defining a More Complex Structure - Invoice
An invoice is a more complex structure than the structure in the previous CSV, *SV,
and fixed length use cases. An invoice usually contains buyer information, seller
information, and line items.
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Native Data Format to Be Translated
The following native data format for an invoice is provided:
6335722^Company One^First Street
999
San Jose
95129USCA650-801-6250
^Oracle^Bridge Parkway 1600
Redwood Shores 94065USCA650-506-7000
001|BPEL Process Manager Enterprise Edition|20000,2,+40000+
002|BPEL Process Manager Standard Edition|10000,5,+50000+
003|BPEL Process Manager Developer Edition|1000,20,+20000+#110000
The first line in the native data is purchaser details, followed by seller details, followed
by line items, and finally the total for the line items. Both purchaser and seller have the
same structure:
■
The first 7 characters are the UID
■
This is followed by the buyer/seller name surrounded by “^”
■
This is followed by the address until the end of the line
This address contains a fixed length street, city, and so on. The last line item ends with
the sharp symbol “#”, followed by the line-item total.
Native Schema
The native schema definition corresponding to the preceding native data can be
defined as follows:
&lt;schema attributeFormDefault=&quot;qualified&quot; elementFormDefault=&quot;qualified&quot;
targetNamespace=&quot;http://xmlns.oracle.com/ias/pcbpel/fatransschema/demo&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/ias/pcbpel/fatransschema/demo&quot;
xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
nxsd:version=&quot;NXSD&quot; nxsd:stream=&quot;chars&quot;&gt;
&lt;element name=&quot;invoice&quot; type=&quot;tns:invoiceType&quot; /&gt;
&lt;complexType name=&quot;invoiceType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;purchaser&quot; type=&quot;tns:partnerType&quot; /&gt;
&lt;element name=&quot;seller&quot; type=&quot;tns:partnerType&quot; /&gt;
&lt;element name=&quot;line-item&quot; type=&quot;tns:line-itemType&quot;
maxOccurs=&quot;unbounded&quot; nxsd:style=&quot;array&quot;
nxsd:cellSeparatedBy=&quot;${eol}&quot; nxsd:arrayTerminatedBy=&quot;#&quot;/&gt;
&lt;element name=&quot;total&quot; type=&quot;double&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;complexType name=&quot;partnerType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;uid&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;7&quot; nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;/&gt;
&lt;element name=&quot;name&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;^&quot;/&gt;
&lt;element name=&quot;address&quot; type=&quot;tns:addressType&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;complexType name=&quot;addressType&quot;&gt;
&lt;sequence&gt;
Native Format Builder Wizard 6-11
Understanding Native Schema
&lt;element name=&quot;street1&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;15&quot; nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;/&gt;
&lt;element name=&quot;street2&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;10&quot; nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;/&gt;
&lt;element name=&quot;city&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;15&quot; nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;/&gt;
&lt;element name=&quot;postal-code&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;5&quot; nxsd:padStyle=&quot;none&quot;/&gt;
&lt;element name=&quot;country&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;2&quot; nxsd:padStyle=&quot;none&quot;/&gt;
&lt;element name=&quot;state&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;2&quot; nxsd:padStyle=&quot;none&quot;/&gt;
&lt;element name=&quot;phone&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;complexType name=&quot;line-itemType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;uid&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:length=&quot;3&quot; nxsd:padStyle=&quot;none&quot;/&gt;
&lt;element name=&quot;description&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;|&quot;/&gt;
&lt;element name=&quot;price&quot; type=&quot;double&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot;/&gt;
&lt;element name=&quot;quantity&quot; type=&quot;integer&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot;/&gt;
&lt;element name=&quot;line-total&quot; type=&quot;double&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;+&quot;/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema
The translated XML looks as follows:
&lt;invoice xmlns=&quot;http://xmlns.oracle.com/pcbpel/demoSchema/invoice-nxsd&quot;&gt;
&lt;purchaser&gt;
&lt;uid&gt;6335722&lt;/uid&gt;
&lt;name&gt;Company One&lt;/name&gt;
&lt;address&gt;
&lt;street1&gt;First Street&lt;/street1&gt;
&lt;street2&gt;999&lt;/street2&gt;
&lt;city&gt;San Jose&lt;/city&gt;
&lt;postal-code&gt;95129&lt;/postal-code&gt;
&lt;country&gt;US&lt;/country&gt;
&lt;state&gt;CA&lt;/state&gt;
&lt;phone&gt;650-801-6250&lt;/phone&gt;
&lt;/address&gt;
&lt;/purchaser&gt;
&lt;seller&gt;
&lt;uid/&gt;
&lt;name&gt;Oracle&lt;/name&gt;
&lt;address&gt;
&lt;street1&gt;Bridge Parkway&lt;/street1&gt;
&lt;street2&gt;1600&lt;/street2&gt;
&lt;city&gt;Redwood Shores&lt;/city&gt;
&lt;postal-code&gt;94065&lt;/postal-code&gt;
&lt;country&gt;US&lt;/country&gt;
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&lt;state&gt;CA&lt;/state&gt;
&lt;phone&gt;650-506-7000&lt;/phone&gt;
&lt;/address&gt;
&lt;/seller&gt;
&lt;line-item&gt;
&lt;uid&gt;001&lt;/uid&gt;
&lt;description&gt;BPEL Process Manager Enterprise Edition&lt;/description&gt;
&lt;price&gt;20000&lt;/price&gt;
&lt;quantity&gt;2&lt;/quantity&gt;
&lt;line-total&gt;40000&lt;/line-total&gt;
&lt;/line-item&gt;
&lt;line-item&gt;
&lt;uid&gt;002&lt;/uid&gt;
&lt;description&gt;BPEL Process Manager Standard Edition&lt;/description&gt;
&lt;price&gt;10000&lt;/price&gt;
&lt;quantity&gt;5&lt;/quantity&gt;
&lt;line-total&gt;50000&lt;/line-total&gt;
&lt;/line-item&gt;
&lt;line-item&gt;
&lt;uid&gt;003&lt;/uid&gt;
&lt;description&gt;BPEL Process Manager Developer Edition&lt;/description&gt;
&lt;price&gt;1000&lt;/price&gt;
&lt;quantity&gt;20&lt;/quantity&gt;
&lt;line-total&gt;20000&lt;/line-total&gt;
&lt;/line-item&gt;
&lt;total&gt;110000&lt;/total&gt;
&lt;/invoice&gt;
6.2.1.5 Using the Native Format Translator for removing or adding namespaces to
XML with no namespace
When the native data is XML and that XML has no namespace, then the Native Format
Translator can be used to add a namespace to an inbound XML document and remove
the namespace from an outbound XML document.
The XML has no namespace when either of the following is true:
■
■
The XML has a corresponding XML schema and there is no target namespace
specified in that XML schema.
The XML has a corresponding DTD; which was converted to the XML schema.
In both cases, we need to create a wrapper schema with targetNamespace specified,
and the wrapper schema should include the actual schema. In addition, the wrapper
schema should also have the nxsd:version attribute set to DTD. For example:
--wrapper.xsd
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
targetNamespace=&quot;myNamespace&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
nxsd:version=&quot;DTD&quot;&gt;
&lt;include schemaLocation=&quot;actual.xsd&quot;/&gt;
&lt;/schema&gt;
Note: Ensure that elementFormDefault=&quot;qualified&quot; is
specified in the actual schema.
Native Format Builder Wizard 6-13
Understanding Native Schema
Using this wrapper.xsd in place of actual.xsd would add myNamespace
namespace to the inbound xml and would remove myNamespace namespace from the
outbound xml.
6.2.1.6 COBOL Copybook
A demonstration is provided that shows how the file adapter and FTP adapter process
a file in COBOL Copybook format (through use of the Native Format Builder Wizard)
to create a native schema file for translation. For a demonstration that uses the Native
Format Builder Wizard to convert a COBOL Copybook file to a native schema file, go
to
Oracle_Home\integration\orabpel\samples\tutorials\121.FileAdapter\CobolCopyBook
The following COBOL Copybook examples are also provided:
■
Multiple Root Levels
■
Single Root Level, Virtual Decimal, Fixed Length Array
■
Variable Length Array
■
Numeric Types
Multiple Root Levels
A COBOL Copybook can have multiple root levels. If all root levels are at 01 level,
each such group implicitly redefines the other.
01
01
01
PAYROLL-E-RECORD.
05 PAYROLL-E-EMPLOYEE-NUMBER
05 PAYROLL-E-TRANS-CODE
05 PAYROLL-E-NAME
05 FILLER
PIC
PIC
PIC
PIC
X(10).
X(02).
X(08).
X(25).
PAYROLL-F-RECORD.
05 PAYROLL-F-EMPLOYEE-NUMBER
05 PAYROLL-F-TRANS-CODE
05 PAYROLL-F-IDENTIFIER-VALUE
05 PAYROLL-F-NAME
PIC
PIC
PIC
PIC
X(10).
X(02).
X(03).
X(30).
PAYROLL-H-RECORD.
05 PAYROLL-H-EMPLOYEE-NUMBER
05 PAYROLL-H-TRANS-CODE
05 PAYROLL-H-HED-NUMBER
05 FILLER
PIC
PIC
PIC
PIC
X(10).
X(02).
9(03).
X(30).
The generated schema:
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; ?&gt;
&lt;!--Native format was generated from COBOL copybook :
D:\work\jDevProjects\CCB\Copybooks\payroll.cpy--&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:extn=&quot;http://xmlns.oracle.com/pcbpel/nxsd/extensions&quot;
targetNamespace=&quot;http://TargetNamespace.com/ccb/implicitRedefines&quot;
xmlns:tns=&quot;http://TargetNamespace.com/ccb/implicitRedefines&quot;
elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;
nxsd:version=&quot;NXSD&quot; nxsd:encoding=&quot;cp037&quot; nxsd:byteOrder=&quot;bigEndian&quot;
nxsd:stream=&quot;chars&quot;&gt;
&lt;xsd:element name=&quot;Payroll-Records&quot;&gt;
&lt;xsd:complexType&gt;
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&lt;!--Please add values for nxsd:lookAhead attributes for the elements in the
choice model group.--&gt;
&lt;xsd:choice minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;!--COBOL declaration : 01 PAYROLL-E-RECORD --&gt;
&lt;xsd:element name=&quot;PAYROLL-E-RECORD&quot; nxsd:lookAhead=&quot;&quot; nxsd:lookFor=&quot;&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 05 PAYROLL-E-EMPLOYEE-NUMBER PIC X(10)--&gt;
&lt;xsd:element name=&quot;PAYROLL-E-EMPLOYEE-NUMBER&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;10&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-E-TRANS-CODE PIC X(02)--&gt;
&lt;xsd:element name=&quot;PAYROLL-E-TRANS-CODE&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;2&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-E-NAME PIC X(08)--&gt;
&lt;xsd:element name=&quot;PAYROLL-E-NAME&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;8&quot;/&gt;
&lt;!--COBOL declaration : 05 FILLER PIC X(25)--&gt;
&lt;xsd:element name=&quot;FILLER&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;25&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;!--COBOL declaration : 01 PAYROLL-F-RECORD --&gt;
&lt;xsd:element name=&quot;PAYROLL-F-RECORD&quot; nxsd:lookAhead=&quot;&quot; nxsd:lookFor=&quot;&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 05 PAYROLL-F-EMPLOYEE-NUMBER PIC X(10)--&gt;
&lt;xsd:element name=&quot;PAYROLL-F-EMPLOYEE-NUMBER&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;10&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-F-TRANS-CODE PIC X(02)--&gt;
&lt;xsd:element name=&quot;PAYROLL-F-TRANS-CODE&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;2&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-F-IDENTIFIER-VALUE PIC X(03)--&gt;
&lt;xsd:element name=&quot;PAYROLL-F-IDENTIFIER-VALUE&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;3&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-F-NAME PIC X(30)--&gt;
&lt;xsd:element name=&quot;PAYROLL-F-NAME&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;30&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;!--COBOL declaration : 01 PAYROLL-H-RECORD --&gt;
&lt;xsd:element name=&quot;PAYROLL-H-RECORD&quot; nxsd:lookAhead=&quot;&quot; nxsd:lookFor=&quot;&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 05 PAYROLL-H-EMPLOYEE-NUMBER PIC X(10)--&gt;
&lt;xsd:element name=&quot;PAYROLL-H-EMPLOYEE-NUMBER&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;10&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-H-TRANS-CODE PIC X(02)--&gt;
&lt;xsd:element name=&quot;PAYROLL-H-TRANS-CODE&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
Native Format Builder Wizard 6-15
Understanding Native Schema
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;2&quot;/&gt;
&lt;!--COBOL declaration : 05 PAYROLL-H-HED-NUMBER PIC 9(03)--&gt;
&lt;xsd:element name=&quot;PAYROLL-H-HED-NUMBER&quot; type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;head&quot;
nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;3&quot;/&gt;
&lt;!--COBOL declaration : 05 FILLER PIC X(30)--&gt;
&lt;xsd:element name=&quot;FILLER&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;30&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:choice&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
The top-level payroll records are enclosed in a choice model group. Each payroll
record also has two attributes: nxsd:lookAhead and nxsd:lookFor that help
identify the type of record during runtime processing of the data file. Therefore, you
must add values for these attributes. For example, assume PAYROLL-F-RECORD
occurs when the PAYROLL-F-TRANS-CODE field has a value of FR. The record
element then looks as follows:
&lt;xsd:element name=&quot;PAYROLL-F-RECORD&quot; nxsd:lookAhead=&quot;10&quot; nxsd:lookFor=&quot;FR&quot;&gt;
The value 10 indicates the position of the lookahead field.
The following COBOL Copybook has multiple root elements at the 05 level:
05 ORG-NUM
05 EMP-RECORD.
10 EMP-SSN
10 EMP-WZT
PIC 99.
PIC 9(4)V(6).
PIC 9(6).
The generated schema:
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; ?&gt;
&lt;!--Native format was generated from COBOL copybook :
D:\work\jDevProjects\CCB\Copybooks\multipleRoot.cpy--&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:extn=&quot;http://xmlns.oracle.com/pcbpel/nxsd/extensions&quot;
targetNamespace=&quot;http://TargetNamespace.com/ccb/multipleRoots&quot;
xmlns:tns=&quot;http://TargetNamespace.com/ccb/multipleRoots&quot;
elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;
nxsd:version=&quot;NXSD&quot; nxsd:encoding=&quot;ASCII&quot;
nxsd:byteOrder=&quot;littleEndian&quot; nxsd:stream=&quot;chars&quot;&gt;
&lt;xsd:element name=&quot;emp-info&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;!--COBOL declaration : 05 ORG-NUM PIC 99--&gt;
&lt;xsd:element name=&quot;ORG-NUM&quot; type=&quot;xsd:long&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;head&quot; nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;2&quot;/&gt;
&lt;!--COBOL declaration : 05 EMP-RECORD--&gt;
&lt;xsd:element name=&quot;EMP-RECORD&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 10 EMP-SSN PIC 9(4)V(6)--&gt;
&lt;xsd:element name=&quot;EMP-SSN&quot; type=&quot;xsd:decimal&quot;
nxsd:style=&quot;virtualDecimal&quot; extn:assumeDecimal=&quot;4&quot;
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extn:picSize=&quot;9&quot;/&gt;
&lt;!--COBOL declaration : 10 EMP-WZT PIC 9(6)--&gt;
&lt;xsd:element name=&quot;EMP-WZT&quot; type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;head&quot;
nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;6&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
In this (non-01 level) case, an unbounded sequence of the root level items is generated.
Single Root Level, Virtual Decimal, Fixed Length Array
The following COBOL Copybook has a single root level item PO-RECORD. In a single
root level case, the level number does not matter because the converter’s behavior is
the same. This COBOL Copybook also shows an example of a field declared as a
virtual decimal (PO-ITEM-PRICE).
05 PO-RECORD.
10 PO-BUYER.
15 PO-UID
PIC 9(7).
15 PO-NAME
PIC X(15).
15 PO-ADDRESS.
20 PO-STREET PIC X(15).
20 PO-CITY
PIC X(10).
20 PO-ZIP
PIC 9(5).
20 PO-STATE PIC X(2).
10 PO-ITEM.
15 POITEM OCCURS 3 TIMES.
20 PO-LINE-ITEM.
25 PO-ITEM-ID
PIC
25 PO-ITEM-NAME
PIC
25 PO-ITEM-QUANTITY PIC
25 PO-ITEM-PRICE
PIC
10 PO-TOTAL PIC 9(7)V9(2).
9(3).
X(40).
9(2).
9(5)V9(2).
The generated schema:
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; ?&gt;
&lt;!--Native format was generated from COBOL copybook : D:\work\
jDevProjects\CCB\Copybooks\po-ccb.cpy--&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:extn=&quot;http://xmlns.oracle.com/pcbpel/nxsd/extensions&quot;
targetNamespace=&quot;http://TargetNamespace.com/ccb/singleRoot&quot;
xmlns:tns=&quot;http://TargetNamespace.com/ccb/singleRoot&quot;
elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;
nxsd:version=&quot;NXSD&quot; nxsd:encoding=&quot;cp037&quot; nxsd:byteOrder=&quot;bigEndian&quot;
nxsd:stream=&quot;chars&quot;&gt;
&lt;xsd:element name=&quot;Root-Element&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 05 PO-RECORD --&gt;
&lt;xsd:element name=&quot;PO-RECORD&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 10 PO-BUYER--&gt;
Native Format Builder Wizard 6-17
Understanding Native Schema
&lt;xsd:element name=&quot;PO-BUYER&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 15 PO-UID PIC 9(7)--&gt;
&lt;xsd:element name=&quot;PO-UID&quot; type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;head&quot;
nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;7&quot;/&gt;
&lt;!--COBOL declaration : 15 PO-NAME PIC X(15)--&gt;
&lt;xsd:element name=&quot;PO-NAME&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;15&quot;/&gt;
&lt;!--COBOL declaration : 15 PO-ADDRESS--&gt;
&lt;xsd:element name=&quot;PO-ADDRESS&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 20 PO-STREET PIC X(15)--&gt;
&lt;xsd:element name=&quot;PO-STREET&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;
nxsd:length=&quot;15&quot;/&gt;
&lt;!--COBOL declaration : 20 PO-CITY PIC X(10)--&gt;
&lt;xsd:element name=&quot;PO-CITY&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;
nxsd:length=&quot;10&quot;/&gt;
&lt;!--COBOL declaration : 20 PO-ZIP PIC 9(5)--&gt;
&lt;xsd:element name=&quot;PO-ZIP&quot; type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;head&quot; nxsd:paddedBy=&quot;0&quot;
nxsd:length=&quot;5&quot;/&gt;
&lt;!--COBOL declaration : 20 PO-STATE PIC X(2)--&gt;
&lt;xsd:element name=&quot;PO-STATE&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot; &quot;
nxsd:length=&quot;2&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;!--COBOL declaration : 10 PO-ITEM--&gt;
&lt;xsd:element name=&quot;PO-ITEM&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 15 POITEM OCCURS 3 TIMES--&gt;
&lt;xsd:element name=&quot;POITEM&quot; minOccurs=&quot;3&quot; maxOccurs=&quot;3&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 20 PO-LINE-ITEM--&gt;
&lt;xsd:element name=&quot;PO-LINE-ITEM&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 25 PO-ITEM-ID PIC 9(3)--&gt;
&lt;xsd:element name=&quot;PO-ITEM-ID&quot; type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;head&quot;
nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;3&quot;/&gt;
&lt;!--COBOL declaration : 25 PO-ITEM-NAME PIC X(40)--&gt;
&lt;xsd:element name=&quot;PO-ITEM-NAME&quot;
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type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;40&quot;/&gt;
&lt;!--COBOL declaration : 25 PO-ITEM-QUANTITY PIC 9(2)--&gt;
&lt;xsd:element name=&quot;PO-ITEM-QUANTITY&quot;
type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot;
nxsd:padStyle=&quot;head&quot;
nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;2&quot;/&gt;
&lt;!--COBOL declaration : 25 PO-ITEM-PRICE PIC 9(5)V9(2)--&gt;
&lt;xsd:element name=&quot;PO-ITEM-PRICE&quot;
type=&quot;xsd:decimal&quot;
nxsd:style=&quot;virtualDecimal&quot;
extn:assumeDecimal=&quot;5&quot;
extn:picSize=&quot;7&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;!--COBOL declaration : 10 PO-TOTAL PIC 9(7)V9(2)--&gt;
&lt;xsd:element name=&quot;PO-TOTAL&quot; type=&quot;xsd:decimal&quot;
nxsd:style=&quot;virtualDecimal&quot; extn:assumeDecimal=&quot;7&quot;
extn:picSize=&quot; &quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
Variable Length Array
05 EMP-RECORD .
10 EMP-NAME
PIC X(30).
10 EMP-DIV-NUM
PIC 9(5).
10 DIV-ENTRY OCCURS 1 TO 50 TIMES
DEPENDING ON EMP-DIV-NUM.
20 DIV-CODE
PIC X(30).
The generated schema:
&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; ?&gt;
&lt;!--Native format was generated from COBOL copybook : D:\work\
jDevProjects\CCB\Copybooks\odo.cpy--&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:extn=&quot;http://xmlns.oracle.com/pcbpel/nxsd/extensions&quot;
targetNamespace=&quot;http://TargetNamespace.com/ccb/varLengthArray&quot;
xmlns:tns=&quot;http://TargetNamespace.com/ccb/varLengthArray&quot;
elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;
nxsd:version=&quot;NXSD&quot; nxsd:encoding=&quot;cp037&quot; nxsd:byteOrder=&quot;bigEndian&quot;
nxsd:stream=&quot;chars&quot;&gt;
&lt;xsd:element name=&quot;Root-Element&quot;&gt;
&lt;xsd:complexType&gt;
Native Format Builder Wizard 6-19
Understanding Native Schema
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration :05 EMP-RECORD --&gt;
&lt;xsd:element name=&quot;EMP-RECORD&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:annotation&gt;
&lt;xsd:appinfo&gt;
&lt;nxsd:variables&gt;
&lt;nxsd:variable name=&quot;DIV-ENTRY_var0&quot;/&gt;
&lt;/nxsd:variables&gt;
&lt;/xsd:appinfo&gt;
&lt;/xsd:annotation&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 10 EMP-NAME PIC X(30)--&gt;
&lt;xsd:element name=&quot;EMP-NAME&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;30&quot;/&gt;
&lt;!--COBOL declaration : 10 EMP-DIV-NUM PIC 9(5)--&gt;
&lt;xsd:element name=&quot;EMP-DIV-NUM&quot; type=&quot;xsd:long&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;head&quot;
nxsd:paddedBy=&quot;0&quot; nxsd:length=&quot;5&quot;&gt;
&lt;xsd:annotation&gt;
&lt;xsd:appinfo&gt;
&lt;nxsd:variables&gt;
&lt;nxsd:assign name=&quot;DIV-ENTRY_var0&quot; value=&quot;${0}&quot;/&gt;
&lt;/nxsd:variables&gt;
&lt;/xsd:appinfo&gt;
&lt;/xsd:annotation&gt;
&lt;/xsd:element&gt;
&lt;!--COBOL declaration : 10 DIV-ENTRY OCCURS 1 TO 50 TIMES DEPENDING ON
EMP-DIV-NUM--&gt;
&lt;xsd:element name=&quot;DIV-ENTRY&quot; nxsd:style=&quot;array&quot;
nxsd:arrayLength=&quot;${DIV-ENTRY_var0}&quot; minOccurs=&quot;1&quot;
maxOccurs=&quot;50&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 20 DIV-CODE PIC X(30)--&gt;
&lt;xsd:element name=&quot;DIV-CODE&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:padStyle=&quot;tail&quot;
nxsd:paddedBy=&quot; &quot; nxsd:length=&quot;30&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
Numeric Types
01
NUMERIC-FORMATS.
05
Salary
05
Rating
05
Age
05
Revenue
05
Growth
05
Computation
PIC 9(5) COMP-3.
PICTURE S9(5).
PIC 9(3) USAGE COMP.
PIC 9(3)V9(2).
PIC S9(3) SIGN IS LEADING.
COMP-1.
The generated schema:
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&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; ?&gt;
&lt;!--Native format was generated from COBOL copybook :
D:\work\jDevProjects\CCB\Copybooks\numeric.cpy--&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:extn=&quot;http://xmlns.oracle.com/pcbpel/nxsd/extensions&quot;
targetNamespace=&quot;http://TargetNamespace.com/ccb/numeric&quot;
xmlns:tns=&quot;http://TargetNamespace.com/ccb/numeric&quot;
elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;
nxsd:version=&quot;NXSD&quot; nxsd:encoding=&quot;cp037&quot; nxsd:byteOrder=&quot;bigEndian&quot;
nxsd:stream=&quot;bytes&quot;&gt;
&lt;xsd:element name=&quot;Numerics&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration :01 NUMERIC-FORMATS--&gt;
&lt;xsd:element name=&quot;NUMERIC-FORMATS&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:complexType&gt;
&lt;xsd:sequence&gt;
&lt;!--COBOL declaration : 05 Salary PIC 9(5) COMP-3--&gt;
&lt;xsd:element name=&quot;Salary&quot; type=&quot;xsd:long&quot; nxsd:style=&quot;comp3&quot;
extn:sign=&quot;unticked&quot; extn:picSize=&quot;5&quot;/&gt;
&lt;!--COBOL declaration : 05 Rating PICTURE S9(5)--&gt;
&lt;xsd:element name=&quot;Rating&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;signZoned&quot; extn:sign=&quot;ticked&quot;
extn:picSize=&quot;5&quot; extn:signPosn=&quot;tailUpperNibble&quot;/&gt;
&lt;!--COBOL declaration : 05 Age PIC 9(3) USAGE COMP--&gt;
&lt;xsd:element name=&quot;Age&quot; type=&quot;xsd:long&quot; nxsd:style=&quot;comp&quot;
extn:picSize=&quot;3&quot; extn:sign=&quot;unticked&quot;/&gt;
&lt;!--COBOL declaration : 05 Revenue PIC 9(3)V9(2)--&gt;
&lt;xsd:element name=&quot;Revenue&quot; type=&quot;xsd:decimal&quot;
nxsd:style=&quot;virtualDecimal&quot; extn:assumeDecimal=&quot;3&quot;
extn:picSize=&quot;5&quot;/&gt;
&lt;!--COBOL declaration : 05 Growth PIC S9(3) SIGN IS LEADING--&gt;
&lt;xsd:element name=&quot;Growth&quot; type=&quot;xsd:string&quot;
nxsd:style=&quot;signZoned&quot; extn:sign=&quot;ticked&quot;
extn:picSize=&quot;3&quot; extn:signPosn=&quot;headUpperNibble&quot;/&gt;
&lt;!--COBOL declaration : 05 Computation COMP-1--&gt;
&lt;xsd:element name=&quot;Computation&quot; type=&quot;xsd:float&quot;
nxsd:style=&quot;comp1&quot; extn:sign=&quot;ticked&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;/xsd:element&gt;
&lt;/xsd:schema&gt;
In this case, all the numeric types follow formats specified according to IBM COBOL
formats. If the data file originates from a different system using different layouts, the
generated schema requires modification.
6.2.2 Native Schema Constructs
This section contains the following topics:
■
Defining Fixed Length Data
■
Defining Terminated Data
■
Defining Surrounded Data
Native Format Builder Wizard 6-21
Understanding Native Schema
■
Defining Lists
■
Defining Arrays
■
Conditional Processing
■
Defining Dates
■
Using Variables
6.2.2.1 Defining Fixed Length Data
Fixed length data in the native format can be defined in the native schema using the
fixed length style. There are three types of fixed length:
■
With padding
■
Without padding
■
With the actual length also being read from the native data
Native Data Format to Be Translated: With Padding
The actual data may be less than the length specified. In this case, you can specify the
paddedBy and padStyle as head or tail. When the data is read, the pads are trimmed
accordingly.
GBP*UK000012550.00
Native Schema: With Padding
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;fixedlength&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;currency_code&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;4&quot;
nxsd:padStyle=&quot;tail&quot; nxsd:paddedBy=&quot;*&quot;&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;maxLength value=&quot;4&quot; /&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/element&gt;
&lt;element name=&quot;country_code&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;2&quot;
nxsd:padStyle=&quot;none&quot;&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;length value=&quot;2&quot; /&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/element&gt;
&lt;element name=&quot;to_usd_rate&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;12&quot;
nxsd:padStyle=&quot;head&quot; nxsd:paddedBy=&quot;0&quot;&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;maxLength value=&quot;12&quot; /&gt;
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&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: With Padding
&lt;fixedlength xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;currency_code&gt;GBP&lt;/currency_code&gt;
&lt;country_code&gt;UK&lt;/country_code&gt;
&lt;to_usd_rate&gt;12550.00&lt;/to_usd_rate&gt;
&lt;/fixedlength&gt;
Native Data Format to Be Translated: Without Padding
To define a fixed length data in native schema, you can use the fixed length style. In
case the actual data is less than the length specified, the white spaces are not trimmed.
GBP*UK000012550.00
Native Schema: Without Padding
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;fixedlength&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;currency_code&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;4&quot;&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;maxLength value=&quot;4&quot; /&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/element&gt;
&lt;element name=&quot;country_code&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;2&quot;&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;length value=&quot;2&quot; /&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/element&gt;
&lt;element name=&quot;to_usd_rate&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;12&quot;&gt;
&lt;simpleType&gt;
&lt;restriction base=&quot;string&quot;&gt;
&lt;maxLength value=&quot;12&quot; /&gt;
&lt;/restriction&gt;
&lt;/simpleType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
Native Format Builder Wizard 6-23
Understanding Native Schema
&lt;/schema&gt;
Translated XML Using the Native Schema: Without Padding
&lt;fixedlength xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;currency_code&gt;GBP*&lt;/currency_code&gt;
&lt;country_code&gt;UK&lt;/country_code&gt;
&lt;to_usd_rate&gt;000012550.00&lt;/to_usd_rate&gt;
&lt;/fixedlength&gt;
Native Data Format to Be Translated: Actual Length Also Being Read from the
Native Data
When the length of the data is also stored in the native stream, this style is used to first
read the length, and subsequently read the data according to the length read.
03joe13DUZac.1HKVmIY
Native Schema: Actual Length Also Being Read from the Native Data
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;fixedlength&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;user&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:identifierLength=&quot;2&quot; /&gt;
&lt;element name=&quot;encr_user&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:identifierLength=&quot;2&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: Actual Length Also Being Read from
the Native Data
&lt;fixedlength xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;user&gt;joe&lt;/user&gt;
&lt;encr_user&gt;DUZac.1HKVmIY&lt;/encr_user&gt;
&lt;/fixedlength&gt;
6.2.2.2 Defining Terminated Data
This format is used when the terminating mark itself is supposed to be treated as part
of the actual data and not as a delimiter. When it is not clear whether the mark is part
of actual data or not, you can use the nxsd:quotedBy to be safe. Specifying
nxsd:quotedBy means the corresponding native data may or may not be quoted. If it
is quoted, the actual data is read from the begin quote to the end quote as specified in
nxsd:quotedBy. Otherwise, it is read until the terminatedBy is found.
The following examples are provided:
■
Optionally quoted
6-24 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
■
Not quoted
Native Data Format to Be Translated: Optionally Quoted
Fred,&quot;2 Old Street, Old Town,Manchester&quot;,20-08-1954,0161-499-1718
Native Schema: Optionally Quoted
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;terminated&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;PersonName&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; /&gt;
&lt;element name=&quot;Address&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy=&quot;&amp;quot;&quot;/&gt;
&lt;element name=&quot;DOB&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; /&gt;
&lt;element name=&quot;Telephone&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
Translated XML Using the Native Schema: Optionally Quoted
&lt;terminated xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;PersonName&gt;Fred&lt;/PersonName&gt;
&lt;Address&gt;2 Old Street, Old Town,Manchester&lt;/Address&gt;
&lt;DOB&gt;20-08-1954&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1718&lt;/Telephone&gt;
&lt;/terminated&gt;
Native Data Format to Be Translated: Not Quoted
This is used when the data is terminated by a particular string or character.
1020,16,18,,1580.00
Native Schema: Not Quoted
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;terminated&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;product&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; /&gt;
Native Format Builder Wizard 6-25
Understanding Native Schema
&lt;element name=&quot;ordered&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; /&gt;
&lt;element name=&quot;inventory&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; /&gt;
&lt;element name=&quot;backlog&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; /&gt;
&lt;element name=&quot;listprice&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: Not Quoted
&lt;terminated xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;product&gt;1020&lt;/product&gt;
&lt;ordered&gt;16&lt;/ordered&gt;
&lt;inventory&gt;18&lt;/inventory&gt;
&lt;backlog&gt;&lt;/backlog&gt;
&lt;listprice&gt;1580.00&lt;/listprice&gt;
&lt;/terminated&gt;
6.2.2.3 Defining Surrounded Data
This is used when the native data is surrounded by a mark.
The following examples are provided:
■
Left and right surrounding marks are different
■
Left and right surrounding marks are the same
Native Data Format to Be Translated: Left and Right Surrounding Marks Are
Different
(Ernest Hemingway Museum){Whitehead St.}
Native Schema: Left and Right Surrounding Marks Are Different
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:tns=&quot;http://www.oracle.com/ias/processconnect&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;limstring&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Landmark&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:leftSurroundedBy=&quot;(&quot; nxsd:rightSurroundedBy=&quot;)&quot; /&gt;
&lt;element name=&quot;Street&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:leftSurroundedBy=&quot;{&quot; nxsd:rightSurroundedBy=&quot;}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
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Understanding Native Schema
Translated XML Using the Native Schema: Left and Right Surrounding Marks Are
Different
&lt;limstring xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Landmark&gt;Ernest Hemingway Museum&lt;/Landmark&gt;
&lt;Street&gt;Whitehead St.&lt;/Street&gt;
&lt;/limstring&gt;
Native Data Format to Be Translated: Left and Right Surrounding Marks Are the
Same
.FL..Florida Keys.+Key West+
Native Schema: Left and Right Surrounding Marks Are the Same
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:tns=&quot;http://www.oracle.com/ias/processconnect&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;limstring&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;State&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;.&quot;/&gt;
&lt;element name=&quot;Region&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;.&quot; /&gt;
&lt;element name=&quot;City&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;+&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: Left and Right Surrounding Marks Are
the Same
&lt;limstring xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;State&gt;FL&lt;/State&gt;
&lt;Region&gt;Florida Keys&lt;/Region&gt;
&lt;City&gt;Key West&lt;/City&gt;
&lt;/limstring&gt;
6.2.2.4 Defining Lists
This format is for lists with the following characteristics:
■
All items separated by the same mark, except the last item (bounded)
■
All items separated by the same mark, including the last item (unbounded)
Native Data Format to Be Translated: All Items Separated by the Same Mark, But
the Last Item Terminated by a Different Mark (Bounded)
125,200,255
Native Schema: All Items Separated by the Same Mark, But the Last Item
Terminated by a Different Mark (Bounded)
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
Native Format Builder Wizard 6-27
Understanding Native Schema
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;list&quot; type=&quot;tns:Colors&quot; /&gt;
&lt;complexType name=&quot;Colors&quot; nxsd:style=&quot;list&quot; nxsd:itemSeparatedBy=&quot;,&quot;
nxsd:listTerminatedBy=&quot;${eol}&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Red&quot; type=&quot;string&quot; /&gt;
&lt;element name=&quot;Green&quot; type=&quot;string&quot; /&gt;
&lt;element name=&quot;Blue&quot; type=&quot;string&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: All Items Separated by the Same
Mark, But the Last Item Terminated by a Different Mark (Bounded)
&lt;list xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Red&gt;125&lt;/Red&gt;
&lt;Green&gt;200&lt;/Green&gt;
&lt;Blue&gt;255&lt;/Blue&gt;
&lt;/list&gt;
Native Data Format to Be Translated: All Items Separated by the Same Mark,
Including the Last Item (Unbounded)
configure;startup;runtest;shutdown;
Native Schema: All Items Separated by the Same Mark, Including the Last Item
(Unbounded)
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:tns=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;list&quot; type=&quot;tns:CommandSet&quot; /&gt;
&lt;complexType name=&quot;CommandSet&quot; nxsd:style=&quot;list&quot; nxsd:itemSeparatedBy=&quot;;&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Cmd1&quot; type=&quot;string&quot; /&gt;
&lt;element name=&quot;Cmd2&quot; type=&quot;string&quot; /&gt;
&lt;element name=&quot;Cmd3&quot; type=&quot;string&quot; /&gt;
&lt;element name=&quot;Cmd4&quot; type=&quot;string&quot; /&gt;
&lt;/sequence&gt;
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&lt;/complexType&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: All Items Separated by the Same
Mark, Including the Last Item (Unbounded)
&lt;list xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Cmd1&gt;configure&lt;/Cmd1&gt;
&lt;Cmd2&gt;startup&lt;/Cmd2&gt;
&lt;Cmd3&gt;runtest&lt;/Cmd3&gt;
&lt;Cmd4&gt;shutdown&lt;/Cmd4&gt;
&lt;/list&gt;
6.2.2.5 Defining Arrays
This is for an array of complex types where the individual cells are separated by a
separating character and the last cell of the array is terminated by a terminating
character.
The following examples are provided:
■
All cells separated by the same mark, except the last cell (bounded)
■
All cells separated by the same mark, including the last cell (unbounded)
■
Cells not separated by any mark, except the last cell (bounded)
■
The number of cells also being read from the native data
Native Data Format to Be Translated: All Cells Separated by the Same Mark, But
the Last Cell Terminated by a Different Mark (Bounded)
&quot;Smith, John&quot;,&quot;1 Old Street, Old Town, Manchester&quot;,,&quot;0161-499-1717&quot;.
Fred,&quot;2 Old Street, Old Town,Manchester&quot;,&quot;20-08-1954&quot;,&quot;0161-499-1718&quot;.
&quot;Smith, Bob&quot;,,,0161-499-1719.#
Native Schema: All Cells Separated by the Same Mark, But the Last Cell
Terminated by a Different Mark (Bounded)
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;array&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Member&quot; maxOccurs=&quot;unbounded&quot;
nxsd:style=&quot;array&quot; nxsd:cellSeparatedBy=&quot;${eol}&quot;
nxsd:arrayTerminatedBy=&quot;#&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Name&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Address&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;DOB&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
Native Format Builder Wizard 6-29
Understanding Native Schema
&lt;element name=&quot;Telephone&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;.&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: All Cells Separated by the Same Mark,
But the Last Cell Terminated by a Different Mark (Bounded)
&lt;array xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, John&lt;/Name&gt;
&lt;Address&gt;1 Old Street, Old Town, Manchester&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1717&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Fred&lt;/Name&gt;
&lt;Address&gt;2 Old Street, Old Town,Manchester&lt;/Address&gt;
&lt;DOB&gt;20-08-1954&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1718&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, Bob&lt;/Name&gt;
&lt;Address&gt;&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1719&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;/array&gt;
Native Data Format to Be Translated:
All Cells Separated by the Same Mark, Including the Last Cell (Unbounded)
&quot;Smith, John&quot;,&quot;1 Old Street, Old Town, Manchester&quot;,,&quot;0161-499-1717&quot;.
Fred,&quot;2 Old Street, Old Town,Manchester&quot;,&quot;20-08-1954&quot;,&quot;0161-499-1718&quot;.
&quot;Smith, Bob&quot;,,,0161-499-1719.
Native Schema:
All Cells Separated by the Same Mark, Including the Last Cell (Unbounded)
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;array&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Member&quot; maxOccurs=&quot;unbounded&quot;
nxsd:style=&quot;array&quot; nxsd:cellSeparatedBy=&quot;\r\n&quot;&gt;
&lt;complexType&gt;
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&lt;sequence&gt;
&lt;element name=&quot;Name&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Address&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;DOB&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Telephone&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;.&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: All Cells Separated by the Same Mark,
Including the Last Cell (Unbounded)
&lt;array xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, John&lt;/Name&gt;
&lt;Address&gt;1 Old Street, Old Town, Manchester&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1717&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Fred&lt;/Name&gt;
&lt;Address&gt;2 Old Street, Old Town,Manchester&lt;/Address&gt;
&lt;DOB&gt;20-08-1954&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1718&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, Bob&lt;/Name&gt;
&lt;Address&gt;&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1719&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;/array&gt;
Native Data Format to Be Translated: Cells Not Separated by Any Mark, But the
Last Cell Terminated by a Mark (Bounded)
&quot;Smith, John&quot;,&quot;1 Old Street, Old Town, Manchester&quot;,,&quot;0161-499-1717&quot;
Fred,&quot;2 Old Street, Old Town,Manchester&quot;,&quot;20-08-1954&quot;,&quot;0161-499-1718&quot;
&quot;Smith, Bob&quot;,,,0161-499-1719
#
Native Schema: Cells Not Separated by Any Mark, But the Last Cell Terminated
by a Mark (Bounded)
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
Native Format Builder Wizard 6-31
Understanding Native Schema
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;array&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Member&quot; maxOccurs=&quot;unbounded&quot;
nxsd:style=&quot;array&quot; nxsd:arrayTerminatedBy=&quot;#&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Name&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Address&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;DOB&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Telephone&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;\r\n&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: Cells Not Separated by Any Mark, But
the Last Cell Terminated by a Mark (Bounded)
&lt;array xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, John&lt;/Name&gt;
&lt;Address&gt;1 Old Street, Old Town, Manchester&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1717&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Fred&lt;/Name&gt;
&lt;Address&gt;2 Old Street, Old Town,Manchester&lt;/Address&gt;
&lt;DOB&gt;20-08-1954&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1718&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, Bob&lt;/Name&gt;
&lt;Address&gt;&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1719&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;/array&gt;
Native Data Format to Be Translated: The Number of Cells Being Read from the
Native Data
3&quot;Smith, John&quot;,&quot;1 Old Street, Old Town, Manchester&quot;,,&quot;0161-499-1717&quot;
Fred,&quot;2 Old Street, Old Town,Manchester&quot;,&quot;20-08-1954&quot;,&quot;0161-499-1718&quot;
&quot;Smith, Bob&quot;,,,0161-499-1719
Native Schema: The Number of Cells Being Read from the Native Data
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
6-32 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;arrayidentifierlength&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Member&quot; maxOccurs=&quot;unbounded&quot; nxsd:style=&quot;array&quot;
nxsd:arrayIdentifierLength=&quot;1&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Name&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Address&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;DOB&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;,&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Telephone&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;\r\n&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: The Number of Cells Being Read from
the Native Data
&lt;arrayidentifierlength xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, John&lt;/Name&gt;
&lt;Address&gt;1 Old Street, Old Town, Manchester&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1717&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Fred&lt;/Name&gt;
&lt;Address&gt;2 Old Street, Old Town,Manchester&lt;/Address&gt;
&lt;DOB&gt;20-08-1954&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1718&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;Member&gt;
&lt;Name&gt;Smith, Bob&lt;/Name&gt;
&lt;Address&gt;&lt;/Address&gt;
&lt;DOB&gt;&lt;/DOB&gt;
&lt;Telephone&gt;0161-499-1719&lt;/Telephone&gt;
&lt;/Member&gt;
&lt;/arrayidentifierlength&gt;
6.2.2.6 Conditional Processing
The following examples are provided:
■
Processing one element within a choice model group based on the condition
Native Format Builder Wizard 6-33
Understanding Native Schema
■
Processing elements based within a sequence model group on the condition
Native Data Format to Be Translated: Processing One Element within a Choice
Model Group Based on the Condition
PO28/06/2004^|ABCD Inc.|Oracle
OracleApps025070,000.00
Database 021230,000.00
ProcessCon021040,000.00
PO01/07/2004^|EFGH Inc.|Oracle
Websphere 025070,000.00
DB2
021230,000.00
Eclipse
021040,000.00
SO29/06/2004|Oracle Apps|5
Navneet Singh
PO28/06/2004^|IJKL Inc.|Oracle
Weblogic 025070,000.00
Tuxedo
021230,000.00
JRockit
021040,000.00
IN30/06/2004;Navneet Singh;Oracle;Oracle Apps;5;70,000.00;350,000.00
Native Schema: Processing One Element within a Choice Model Group Based on
the Condition
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:tns=&quot;http://www.oracle.com/ias/processconnect&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;container&quot;&gt;
&lt;complexType&gt;
&lt;choice maxOccurs=&quot;unbounded&quot; nxsd:choiceCondition=&quot;fixedLength&quot;
nxsd:length=&quot;2&quot;&gt;
&lt;element ref=&quot;tns:PurchaseOrder&quot; nxsd:conditionValue=&quot;PO&quot; /&gt;
&lt;element ref=&quot;tns:SalesOrder&quot; nxsd:conditionValue=&quot;SO&quot; /&gt;
&lt;element ref=&quot;tns:Invoice&quot; nxsd:conditionValue=&quot;IN&quot; /&gt;
&lt;/choice&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;!-- PO --&gt;
&lt;element name=&quot;PurchaseOrder&quot; type=&quot;tns:POType&quot;/&gt;
&lt;complexType name=&quot;POType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Date&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;^&quot; /&gt;
&lt;element name=&quot;Buyer&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;|&quot; /&gt;
&lt;element name=&quot;Supplier&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
6-34 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Items&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Line-Item&quot; minOccurs=&quot;3&quot; maxOccurs=&quot;3&quot;&gt;
&lt;complexType&gt;
&lt;group ref=&quot;tns:LineItems&quot; /&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;group name=&quot;LineItems&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Id&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;10&quot;
nxsd:padStyle=&quot;none&quot;/&gt;
&lt;element name=&quot;Quantity&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:identifierLength=&quot;2&quot; /&gt;
&lt;element name=&quot;Price&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/group&gt;
&lt;!-- SO --&gt;
&lt;element name=&quot;SalesOrder&quot; type=&quot;tns:SOType&quot; /&gt;
&lt;complexType name=&quot;SOType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Date&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;|&quot; /&gt;
&lt;element name=&quot;Item&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;|&quot; /&gt;
&lt;element name=&quot;Quantity&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Buyer&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;!-- INV --&gt;
&lt;element name=&quot;Invoice&quot; type=&quot;tns:INVType&quot; /&gt;
&lt;complexType name=&quot;INVType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Date&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Purchaser&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Seller&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Item&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Price&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Quantity&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;TotalPrice&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
Native Format Builder Wizard 6-35
Understanding Native Schema
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: Processing One Element Within a
Choice Model Group Based on the Condition
&lt;container xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;PurchaseOrder&gt;
&lt;Date&gt;28/06/2004&lt;/Date&gt;
&lt;Buyer&gt;ABCD Inc.&lt;/Buyer&gt;
&lt;Supplier&gt;Oracle&lt;/Supplier&gt;
&lt;Items&gt;
&lt;Line-Item&gt;
&lt;Id&gt;OracleApps&lt;/Id&gt;
&lt;Quantity&gt;50&lt;/Quantity&gt;
&lt;Price&gt;70,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Database &lt;/Id&gt;
&lt;Quantity&gt;12&lt;/Quantity&gt;
&lt;Price&gt;30,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;ProcessCon&lt;/Id&gt;
&lt;Quantity&gt;10&lt;/Quantity&gt;
&lt;Price&gt;40,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;/Items&gt;
&lt;/PurchaseOrder&gt;
&lt;PurchaseOrder&gt;
&lt;Date&gt;01/07/2004&lt;/Date&gt;
&lt;Buyer&gt;EFGH Inc.&lt;/Buyer&gt;
&lt;Supplier&gt;Oracle&lt;/Supplier&gt;
&lt;Items&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Websphere &lt;/Id&gt;
&lt;Quantity&gt;50&lt;/Quantity&gt;
&lt;Price&gt;70,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;DB2
&lt;/Id&gt;
&lt;Quantity&gt;12&lt;/Quantity&gt;
&lt;Price&gt;30,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Eclipse
&lt;/Id&gt;
&lt;Quantity&gt;10&lt;/Quantity&gt;
&lt;Price&gt;40,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;/Items&gt;
&lt;/PurchaseOrder&gt;
&lt;SalesOrder&gt;
&lt;Date&gt;29/06/2004&lt;/Date&gt;
&lt;Item&gt;Oracle Apps&lt;/Item&gt;
&lt;Quantity&gt;5&lt;/Quantity&gt;
&lt;Buyer&gt;Navneet Singh&lt;/Buyer&gt;
&lt;/SalesOrder&gt;
&lt;PurchaseOrder&gt;
6-36 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
&lt;Date&gt;28/06/2004&lt;/Date&gt;
&lt;Buyer&gt;IJKL Inc.&lt;/Buyer&gt;
&lt;Supplier&gt;Oracle&lt;/Supplier&gt;
&lt;Items&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Weblogic &lt;/Id&gt;
&lt;Quantity&gt;50&lt;/Quantity&gt;
&lt;Price&gt;70,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Tuxedo
&lt;/Id&gt;
&lt;Quantity&gt;12&lt;/Quantity&gt;
&lt;Price&gt;30,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;JRockit
&lt;/Id&gt;
&lt;Quantity&gt;10&lt;/Quantity&gt;
&lt;Price&gt;40,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;/Items&gt;
&lt;/PurchaseOrder&gt;
&lt;Invoice&gt;
&lt;Date&gt;30/06/2004&lt;/Date&gt;
&lt;Purchaser&gt;Navneet Singh&lt;/Purchaser&gt;
&lt;Seller&gt;Oracle&lt;/Seller&gt;
&lt;Item&gt;Oracle Apps&lt;/Item&gt;
&lt;Price&gt;5&lt;/Price&gt;
&lt;Quantity&gt;70,000.00&lt;/Quantity&gt;
&lt;TotalPrice&gt;350,000.00&lt;/TotalPrice&gt;
&lt;/Invoice&gt;
&lt;/container&gt;
Native Data Format to Be Translated: Processing Elements within a Sequence
Model Group Based on the Condition
PO28/06/2004^|ABCD Inc.|Oracle
OracleApps025070,000.00
Database 021230,000.00
ProcessCon021040,000.00
PO01/07/2004^|EFGH Inc.|Oracle
Websphere 025070,000.00
DB2
021230,000.00
Eclipse
021040,000.00
SO29/06/2004|Oracle Apps|5
Navneet Singh
PO28/06/2004^|IJKL Inc.|Oracle
Weblogic 025070,000.00
Tuxedo
021230,000.00
JRockit
021040,000.00
IN30/06/2004;Navneet Singh;Oracle;Oracle Apps;5;70,000.00;350,000.00
Native Schema: Processing Elements within a Sequence Model Group Based on
the Condition
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
xmlns:tns=&quot;http://www.oracle.com/ias/processconnect&quot;
targetNamespace=&quot;http://www.oracle.com/ias/processconnect&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
Native Format Builder Wizard 6-37
Understanding Native Schema
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;container&quot;&gt;
&lt;complexType&gt;
&lt;sequence maxOccurs=&quot;unbounded&quot;&gt;
&lt;element ref=&quot;tns:PurchaseOrder&quot; minOccurs=&quot;0&quot; nxsd:startsWith=&quot;PO&quot; /&gt;
&lt;element ref=&quot;tns:SalesOrder&quot; minOccurs=&quot;0&quot; nxsd:startsWith=&quot;SO&quot; /&gt;
&lt;element ref=&quot;tns:Invoice&quot; minOccurs=&quot;0&quot; nxsd:startsWith=&quot;IN&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;!-- PO --&gt;
&lt;element name=&quot;PurchaseOrder&quot; type=&quot;tns:POType&quot;/&gt;
&lt;complexType name=&quot;POType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Date&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;^&quot; /&gt;
&lt;element name=&quot;Buyer&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:surroundedBy=&quot;|&quot; /&gt;
&lt;element name=&quot;Supplier&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Items&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;Line-Item&quot; minOccurs=&quot;3&quot; maxOccurs=&quot;3&quot;&gt;
&lt;complexType&gt;
&lt;group ref=&quot;tns:LineItems&quot; /&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;group name=&quot;LineItems&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Id&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;10&quot;
nxsd:padStyle=&quot;none&quot;/&gt;
&lt;element name=&quot;Quantity&quot; type=&quot;string&quot; nxsd:style=&quot;fixedLength&quot;
nxsd:identifierLength=&quot;2&quot; /&gt;
&lt;element name=&quot;Price&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/group&gt;
&lt;!-- SO --&gt;
&lt;element name=&quot;SalesOrder&quot; type=&quot;tns:SOType&quot; /&gt;
&lt;complexType name=&quot;SOType&quot;&gt;
6-38 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
&lt;sequence&gt;
&lt;element name=&quot;Date&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;|&quot; /&gt;
&lt;element name=&quot;Item&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;|&quot; /&gt;
&lt;element name=&quot;Quantity&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Buyer&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;!-- INV --&gt;
&lt;element name=&quot;Invoice&quot; type=&quot;tns:INVType&quot; /&gt;
&lt;complexType name=&quot;INVType&quot;&gt;
&lt;sequence&gt;
&lt;element name=&quot;Date&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Purchaser&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Seller&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Item&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Price&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;Quantity&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;;&quot; /&gt;
&lt;element name=&quot;TotalPrice&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema: Processing Elements within a
Sequence Model Group Based on the Condition
&lt;container xmlns=&quot;http://www.oracle.com/ias/processconnect&quot;&gt;
&lt;PurchaseOrder&gt;
&lt;Date&gt;28/06/2004&lt;/Date&gt;
&lt;Buyer&gt;ABCD Inc.&lt;/Buyer&gt;
&lt;Supplier&gt;Oracle&lt;/Supplier&gt;
&lt;Items&gt;
&lt;Line-Item&gt;
&lt;Id&gt;OracleApps&lt;/Id&gt;
&lt;Quantity&gt;50&lt;/Quantity&gt;
&lt;Price&gt;70,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Database &lt;/Id&gt;
&lt;Quantity&gt;12&lt;/Quantity&gt;
&lt;Price&gt;30,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;ProcessCon&lt;/Id&gt;
&lt;Quantity&gt;10&lt;/Quantity&gt;
&lt;Price&gt;40,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;/Items&gt;
Native Format Builder Wizard 6-39
Understanding Native Schema
&lt;/PurchaseOrder&gt;
&lt;PurchaseOrder&gt;
&lt;Date&gt;01/07/2004&lt;/Date&gt;
&lt;Buyer&gt;EFGH Inc.&lt;/Buyer&gt;
&lt;Supplier&gt;Oracle&lt;/Supplier&gt;
&lt;Items&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Websphere &lt;/Id&gt;
&lt;Quantity&gt;50&lt;/Quantity&gt;
&lt;Price&gt;70,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;DB2
&lt;/Id&gt;
&lt;Quantity&gt;12&lt;/Quantity&gt;
&lt;Price&gt;30,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Eclipse
&lt;/Id&gt;
&lt;Quantity&gt;10&lt;/Quantity&gt;
&lt;Price&gt;40,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;/Items&gt;
&lt;/PurchaseOrder&gt;
&lt;SalesOrder&gt;
&lt;Date&gt;29/06/2004&lt;/Date&gt;
&lt;Item&gt;Oracle Apps&lt;/Item&gt;
&lt;Quantity&gt;5&lt;/Quantity&gt;
&lt;Buyer&gt;Navneet Singh&lt;/Buyer&gt;
&lt;/SalesOrder&gt;
&lt;PurchaseOrder&gt;
&lt;Date&gt;28/06/2004&lt;/Date&gt;
&lt;Buyer&gt;IJKL Inc.&lt;/Buyer&gt;
&lt;Supplier&gt;Oracle&lt;/Supplier&gt;
&lt;Items&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Weblogic &lt;/Id&gt;
&lt;Quantity&gt;50&lt;/Quantity&gt;
&lt;Price&gt;70,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;Tuxedo
&lt;/Id&gt;
&lt;Quantity&gt;12&lt;/Quantity&gt;
&lt;Price&gt;30,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;Line-Item&gt;
&lt;Id&gt;JRockit
&lt;/Id&gt;
&lt;Quantity&gt;10&lt;/Quantity&gt;
&lt;Price&gt;40,000.00&lt;/Price&gt;
&lt;/Line-Item&gt;
&lt;/Items&gt;
&lt;/PurchaseOrder&gt;
&lt;Invoice&gt;
&lt;Date&gt;30/06/2004&lt;/Date&gt;
&lt;Purchaser&gt;Navneet Singh&lt;/Purchaser&gt;
&lt;Seller&gt;Oracle&lt;/Seller&gt;
&lt;Item&gt;Oracle Apps&lt;/Item&gt;
&lt;Price&gt;5&lt;/Price&gt;
&lt;Quantity&gt;70,000.00&lt;/Quantity&gt;
&lt;TotalPrice&gt;350,000.00&lt;/TotalPrice&gt;
&lt;/Invoice&gt;
6-40 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Understanding Native Schema
&lt;/container&gt;
6.2.2.7 Defining Dates
This example shows how to define dates.
Native Data Format to Be Translated
11/16/0224/11/02
11-20-2002
23*11*2002
01/02/2003 01:02
01/02/2003 03:04:05
Native Schema
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;dateformat&quot;&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;StartDate&quot; type=&quot;dateTime&quot; nxsd:dateFormat=&quot;MM/dd/yy&quot;
nxsd:style=&quot;fixedLength&quot; nxsd:length=&quot;8&quot; /&gt;
&lt;element name=&quot;EndDate&quot; type=&quot;dateTime&quot;
nxsd:dateFormat=&quot;dd/MM/yy&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Milestone&quot; type=&quot;dateTime&quot; nxsd:dateFormat=&quot;MM-dd-yyyy&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;DueDate&quot; type=&quot;dateTime&quot;
nxsd:dateFormat=&quot;dd*MM*yyyy&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Date&quot; type=&quot;dateTime&quot;
nxsd:dateFormat=&quot;MM/dd/yyyy hh:mm&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;element name=&quot;Date&quot; type=&quot;dateTime&quot;
nxsd:dateFormat=&quot;MM/dd/yyyy hh:mm:ss&quot;
nxsd:style=&quot;terminated&quot; nxsd:terminatedBy=&quot;${eol}&quot; /&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema
&lt;dateformat xmlns=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;&gt;
&lt;StartDate&gt;2002-11-16T00:00:00&lt;/StartDate&gt;
&lt;EndDate&gt;2002-11-24T00:00:00&lt;/EndDate&gt;
&lt;Milestone&gt;2002-11-20T00:00:00&lt;/Milestone&gt;
&lt;DueDate&gt;2002-11-23T00:00:00&lt;/DueDate&gt;
&lt;Date&gt;2003-01-02T01:02:00&lt;/Date&gt;
&lt;Date&gt;2003-01-02T03:04:05&lt;/Date&gt;
&lt;/dateformat&gt;
6.2.2.8 Using Variables
This example shows how to use variables.
Native Format Builder Wizard 6-41
Understanding Native Schema
Native Data Format to Be Translated
{,;}Fred,&quot;2 Old Street, Old Town,Manchester&quot;,&quot;20-08-1954&quot;;&quot;0161-499-1718&quot;
phone-2
phone-3
Native Schema
&lt;?xml version=&quot;1.0&quot; encoding=&quot;US-ASCII&quot;?&gt;
&lt;schema xmlns=&quot;http://www.w3.org/2001/XMLSchema&quot;
xmlns:nxsd=&quot;http://xmlns.oracle.com/pcbpel/nxsd&quot;
targetNamespace=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;
elementFormDefault=&quot;qualified&quot;
attributeFormDefault=&quot;unqualified&quot;
nxsd:stream=&quot;chars&quot;
nxsd:version=&quot;NXSD&quot;&gt;
&lt;element name=&quot;variable&quot;&gt;
&lt;annotation&gt;
&lt;documentation&gt;
1. var1 - variable declaration
2. var2 - variable declaration with default value
3. EOL - variable declaration with referencing a system variable
&lt;/documentation&gt;
&lt;appinfo&gt;
&lt;junkies/&gt;
&lt;nxsd:variables&gt;
&lt;nxsd:variable name=&quot;var1&quot; /&gt;
&lt;nxsd:variable name=&quot;var2&quot; value=&quot;,&quot; /&gt;
&lt;nxsd:variable name=&quot;SystemEOL&quot; value=&quot;${system.line.separator}&quot; /&gt;
&lt;/nxsd:variables&gt;
&lt;junkies/&gt;
&lt;junkies/&gt;
&lt;junkies/&gt;
&lt;/appinfo&gt;
&lt;/annotation&gt;
&lt;complexType&gt;
&lt;sequence&gt;
&lt;element name=&quot;delims&quot; type=&quot;string&quot; nxsd:style=&quot;surrounded&quot;
nxsd:leftSurroundedBy=&quot;{&quot; nxsd:rightSurroundedBy=&quot;}&quot; &gt;
&lt;annotation&gt;
&lt;appinfo&gt;
&lt;junkies/&gt;
&lt;junkies/&gt;
&lt;junkies/&gt;
&lt;nxsd:variables&gt;
&lt;nxsd:assign name=&quot;var1&quot; value=&quot;${0,1}&quot;/&gt;
&lt;nxsd:assign name=&quot;var2&quot; value=&quot;${1}&quot; /&gt;
&lt;/nxsd:variables&gt;
&lt;/appinfo&gt;
&lt;/annotation&gt;
&lt;/element&gt;
&lt;element name=&quot;PersonName&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${var1}&quot; nxsd:quotedBy=&quot;&amp;quot;&quot; /&gt;
&lt;element name=&quot;Address&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${var1}&quot; nxsd:quotedBy=&quot;&amp;quot;&quot;/&gt;
&lt;element name=&quot;DOB&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${var2}&quot; nxsd:quotedBy='&quot;'/&gt;
6-42 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Native Schema Constructs
&lt;element name=&quot;Telephone1&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Telephone2&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;element name=&quot;Telephone3&quot; type=&quot;string&quot; nxsd:style=&quot;terminated&quot;
nxsd:terminatedBy=&quot;${eol}&quot; nxsd:quotedBy='&quot;'/&gt;
&lt;/sequence&gt;
&lt;/complexType&gt;
&lt;/element&gt;
&lt;/schema&gt;
Translated XML Using the Native Schema
&lt;variable xmlns=&quot;http://xmlns.oracle.com/pcbpel/nxsd/smoketest&quot;&gt;
&lt;delims&gt;,;&lt;/delims&gt;
&lt;PersonName&gt;Fred&lt;/PersonName&gt;
&lt;Address&gt;2 Old Street, Old Town,Manchester&lt;/Address&gt;
&lt;DOB&gt;20-08-1954&lt;/DOB&gt;
&lt;Telephone1&gt;0161-499-1718&lt;/Telephone1&gt;
&lt;Telephone2&gt;phone-2&lt;/Telephone2&gt;
&lt;Telephone3&gt;phone-3&lt;/Telephone3&gt;
&lt;/variable&gt;
6.3 Native Schema Constructs
Table 6–4 shows the constructs applicable only on the &lt;schema&gt; tag.
Table 6–4
Constructs Applicable Only on the &lt;schema&gt; Tag
Construct
Description
byteOrder
The byte order of the native data as bigEndian or
littleEndian.
encoding
The encoding in which the actual data is stored. Any legal
encoding supported by java.io.InputStreamReader.
headerLines
A positive integer specifying the number of lines to be skipped,
before translating the native data.
headerLinesTerminated Skip until the specified string, before translating the native data.
By
standalone
If declared, adds the standalone attribute in the XML declaration
prolog of the translated XML, with the actual value as that
specified in nxsd:standalone. Allowed values are true and
false.
stream
Whether the data is stored as characters or bytes. Allowed
values are CHARS and BYTES.
uniqueMessageSeparato String specifying the unique message separator in the native
r
data, in case of a batch of messages.
version
The type of native data. Possible values are NXSD, DTD, XSD, and
OPAQUE.
xmlversion
If declared, adds the XML declaration prolog to the translated
XML with the actual value as that specified in
nxsd:xmlversion. Allowed values are 1.0 and 1.1.
Table 6–5 shows the constructs applicable on all tags other than the &lt;schema&gt; tag.
Native Format Builder Wizard 6-43
Native Schema Constructs
Table 6–5
Constructs Applicable On All Tags Other Than the &lt;schema&gt; Tag
Construct
Description
arrayIdentifierLength The length of the array being stored in the native data occupying
the specified length
arrayLength
The value of this construct is used as the length of the array,
which can also be a variable resolved to a valid number. This
value overrides any minOccurs and maxOccurs attributes of
the particle where it is specified. Use this feature as follows:
nxsd:style=&quot;array&quot; nxsd:arrayLength=&quot;10&quot;
This indicates that the array length is 10.
arrayTerminatedBy
The last item in the array being terminated by the specified
string
assign
Assigns a value to the already declared variable
cellSeparatedBy
The cells of the array in the native data being separated by the
specified string
choiceCondition
Either fixedLength or terminated
conditionValue
Matches the string read from the native stream for the
choiceCondition, against the specified string in the
conditionValue
dateFormat
A valid Java date format representing the date in the native data
identifierLength
The number of characters and bytes in which the actual length of
the data is stored
itemSeparatedBy
The items in the list being separated by the specified string
leftSurroundedBy,
The native data surrounded
rightSurroundedBy
length
The length of the native data to be read. Used with fixed length
style.
listTerminatedBy
The last item in the list being terminated by the specified string
lookAhead
Looks for a match ahead of the current position in the input
stream. If a match is found, the node on which this construct is
specified is processed; otherwise, it is skipped. Use this feature
as follows:
nxsd:lookAhead=&quot;20&quot; nxsd:lookFor=&quot;abc&quot;
This indicates to skip 20 characters and look for the string abc
starting from that location. If this is found, the node is processed;
otherwise, it is skipped.
paddedBy
The string used for padding
padStyle
head, tail, or none
quotedBy
The native data being quoted by the specified string
skip
Skips the specified number of bytes or characters
skipLines
Skips the number of lines specified
skipUntil
Skips until the string specified
startsWith
Looks for the specified string in the native data. If it exists, then
proceeds with the element where it is specified; otherwise, skips
and processes the next element.
6-44 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Summary
Table 6–5 (Cont.) Constructs Applicable On All Tags Other Than the &lt;schema&gt; Tag
Construct
Description
style
The style used to read the native data from the input stream.
Allowed values are fixedLength, surrounded, terminated,
list, and array.
surroundedBy
The native data being surrounded by the specified string
terminatedBy
The native data being terminated by the string specified
variable
Declares a single variable
variables
Declares a set of variables or assigns the already declared
variables a valid value
6.4 Summary
Oracle BPEL Process Manager requires native schemas for translation, which are based
on XML schema. However, not all commonly used formats use XML schema files. This
chapter describes the Native Format Builder Wizard, which enables you to create
native schemas used for translation. The Native Format Builder Wizard guides you
through the creation of a native schema file from delimited formats (such as CSVs),
fixed length formats, DTD formats, and COBOL Copybook formats. This chapter also
provides use cases and constructs for the schema.
Native Format Builder Wizard 6-45
Summary
6-46 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
A
Troubleshooting and Workarounds
This appendix describes Oracle BPEL Process Manager troubleshooting methods.
This appendix contains the following topics:
■
■
■
■
■
■
Section A.1, &quot;Troubleshooting the Oracle Application Server Adapter for
Databases&quot;
Section A.2, &quot;Troubleshooting the Oracle Application Server Adapter for
Databases When Using Stored Procedures&quot;
Section A.3, &quot;Troubleshooting the Oracle Application Server Adapter for
Files/FTP&quot;
Section A.4, &quot;Troubleshooting the Oracle Application Server Adapter for
Advanced Queuing&quot;
Section A.5, &quot;Troubleshooting the Oracle Application Server Adapter for Java
Message Service (JMS)&quot;
Section A.6, &quot;Summary&quot;
A.1 Troubleshooting the Oracle Application Server Adapter for Databases
The following sections describe possible issues and solutions when using the Oracle
Application Server Adapter for Databases (database adapter).
A.1.1 Could Not Create OracleAS TopLink Session Exception
Problem
At run time, you may see the &quot;Could not create the TopLink session&quot;
exception.
Solution
This common error occurs when the run-time connection is not configured properly.
See Section 4.5.5, &quot;Deployment&quot; for more information.
A.1.2 Could Not Find Adapter for eis/DB/my_connection
Problem
You may see the &quot;Could not find adapter for eis/DB/my_
connection/....&quot; exception.
Troubleshooting and Workarounds
A-1
Troubleshooting the Oracle Application Server Adapter for Databases
Solution
See Section 4.5.5, &quot;Deployment&quot; for more information.
A.1.3 Changes Through OracleAS TopLink Mapping Workbench
Changes through OracleAS TopLink Mapping Workbench require you to run the
Adapter Configuration Wizard again in edit mode to force a refresh of the toplink_
mappings.xml file.
A.1.4 Redeploying from the Command Line
If you redeploy using obant, unless the bpel.xml or .bpel files have changed, the
redeployment is skipped by design.
A.1.5 Cannot Change Customers_table.xsd
Problem
Changes to Customers_table.xsd are not reflected, or you get an exception.
Solution
You cannot specify the XSD format that the database adapter produces. See
Section 4.5.4, &quot;XML Schema Definition (XSD)&quot; for details.
A.1.6 No Target Foreign Keys Error
Problem
After clicking Finish, or at deployment, you may see the following exception:
Caused by Exception [TOPLINK-0] (OracleAS TopLink - 10g (9.0.4.4) (Build 040705)):
oracle.toplink.exceptions.IntegrityException
Descriptor Exceptions:
---------------------Exception [TOPLINK-64] (OracleAS TopLink - 10g (9.0.4.4) (Build 040705)):
oracle.toplink.exceptions.DescriptorException
Exception Description: No target foreign keys have been specified for this
mapping.
Mapping: oracle.toplink.mappings.OneToManyMapping[phonesCollection]
Descriptor: Descriptor(Test.Customers --&gt; [DatabaseTable(CUSTOMERS)])
This generally means that there was a problem in the wizard.
Solution
The simplest solution is to create all constraints on the database first. Also, depending
on the problem, you may only need to fix something in the offline tables, and then run
the wizard again.
If you want to create a one-to-many mapping from CUSTOMERS to PHONES, you
need a foreign key constraint on PHONES.
This procedure assumes that this constraint does not exist on the database, and that
you tried to create it with the wizard and it generated an exception.
A-2 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Databases
■
■
■
■
In your JDeveloper BPEL Designer project, click the plus sign (+) in the
Applications Navigator to add files to your project. Select database &gt;
schemaName &gt; schemaName.schema. This imports all your database objects.
Open the PHONES table and manually create the foreign key constraint from
PHONES to CUSTOMERS.
Save all.
Now open the OracleAS TopLink project. In JDeveloper BPEL Designer, go to
Application Sources &gt; TopLink &gt; TopLink Mappings. In the Structure window,
open CUSTOMERS and double-click the phonesCollection mapping.
You should now see a Table Reference tab in the main window. This was probably
blank previously. From the menu, select the one you just created.
■
Save again.
■
Edit the database partner link.
Click Next to the end in the wizard, and then click Finish and Close.
This refreshes toplink_mappings.xml for your project.
■
■
Open the toplink_mappings.xml file in JDeveloper BPEL Designer. You may
need to add it to the project first.
Search for phonesCollection.
–
You should find a tag like this:
&lt;database-mapping&gt;
&lt;attribute-name&gt;phonesCollection&lt;/attribute-name&gt;
–
Scroll down and you should now see something like this:
&lt;source-key-fields&gt;
&lt;field&gt;CUSTOMERS.someColumn&lt;/field&gt;
&lt;/source-key-fields&gt;
&lt;target-foreign-key-fields&gt;
&lt;field&gt;PHONES.someColumn&lt;/field&gt;
&lt;/target-foreign-key-fields&gt;
–
■
If you do not see the tags shown here, then manually add them. This is not the
preferred method because toplink_mappings.xml is a generated file,
which gets refreshed whenever you edit a database partner link.
Undeploy the old process in Oracle BPEL Console, and redeploy your fixed
process with a new revision number.
A.1.7 No Primary Key Exception
Problem
After clicking Finish, or at deployment, you may see the following exception:
Caused by Exception [TOPLINK-0] (OracleAS TopLink - 10g (9.0.4.4) (Build 040705)):
oracle.toplink.exceptions.IntegrityException
Descriptor Exceptions:
---------------------Exception [TOPLINK-46] (OracleAS TopLink - 10g (9.0.4.4) (Build 040705)):
oracle.toplink.exceptions.DescriptorException
Exception Description: There should be one non-read-only mapping defined for the
Troubleshooting and Workarounds
A-3
Troubleshooting the Oracle Application Server Adapter for Databases
primary key field [PHONES.ID].
Descriptor: Descriptor(Test.Phones --&gt; [DatabaseTable(PHONES)])
This probably means that no primary key was defined for PHONES.
Solution
If this exception appears in conjunction with the No Target Foreign Keys error, then
see Section A.1.6, &quot;No Target Foreign Keys Error&quot; and resolve that problem first.
Otherwise, do the following:
■
Open Application Sources &gt; TopLink &gt; TopLink Mappings.
–
In the Structure window, double-click PHONES.
On the first page, you should see Primary Keys:. Ensure that columns are
selected and that they are mapped in the project.
–
■
Save.
Edit the database partner link.
Click Next to the end in the wizard, and then click Finish and Close.
■
Open toplink_mappings.xml. For the PHONES descriptor, you should see
something like this:
&lt;primary-key-fields&gt;
&lt;field&gt;PHONES.ID&lt;/field&gt;
&lt;/primary-key-fields&gt;
–
■
Make sure that there is at least one field, and for that field, make sure you can
find it somewhere else in the toplink_mappings.xml file. If you can, then
this means that the database adapter can detect it. If not, then you must map
this field.
Open Application Sources &gt; Test &gt; Phones.
You should see Java code. Add a line as follows:
long id;
■
Save.
■
Now open Application Sources &gt; TopLink &gt; TopLink Mappings.
Double-click PHONES and go to the Structure window.
You should be able to map the id as DirectToField, and set the database field to
ID.
■
Save and then edit the database partner link.
Click Next to the end in the wizard, and then click Finish and Close.
■
Undeploy the old process in Oracle BPEL Console, and redeploy your fixed
process with a new revision number.
A.1.8 dateTime Conversion Exceptions
Problem
You may get a conversion exception when you pass in an xs:dateTime value to the
database adapter.
A-4 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Databases
Solution
If an attribute is of type xs:dateTime, then the database adapter is expecting a string
in one of the following formats:
1999-12-25T07:05:23-8:00
1999-12-25T07:05:23.000-8:00
1999-12-25T15:05:23:000Z
1999-12-25T15:05:23
The format 1999-12-25 is accepted, although it is not a valid xs:dateTime value.
The xs:dateTime format is yyyy-MM-ddTHH:mm:ss.SSSZ, where
■
yyyy is the year (2005, for example)
■
MM is the month (01 through 12)
■
dd is the day (01 through 31)
■
HH is the hour (00 through 23)
■
mm is the minute (00 through 59)
■
ss is the second (00 through 59)
■
SSS is milliseconds (000 through 999), optional
■
Z is the time zone designator (+hh:mm or -hh:mm), optional
A DATE column may exist on an Oracle Database, which can accept the 25-DEC-1999
date format. However, this is not a date format that the database adapter can accept.
The following workaround applies to TopLink only.
■
If you want to pass in the 25-DEC-1999 date format, then map the attribute as a
plain string. The database adapter passes the value through as-is.
–
To do this, you must edit the offline database table and change the column
datatype from DATE to VARCHAR2.
■
Save.
■
Edit the database partner link.
Click Next to the end in the wizard, and then click Finish and Close.
While not a valid xs:dateTime format, the format yyyy-mm-dd is a valid xs:date
format.
A.1.9 Issues with Oracle DATE
Problem
The time portion of DATE fields may be truncated on Oracle9 or greater platforms
when using
oracle.toplink.internal.databaseaccess.DatabasePlatform. For
example, 2005-04-28 16:21:56 becomes 2005-04-28T00:00:00.000+08:00.
Or, the millisecond portion of DATE fields may be truncated on Oracle9 or greater
platforms when using
oracle.toplink.internal.databaseaccess.Oracle9Platform. For
example, 2005-04-28 16:21:56.789 becomes
2005-04-28T16:21:56.000+08:00.
Or, you may have trouble with TIMESTAMPTZ (time stamp with time zone) or
TIMESTAMPLTZ (time stamp with local time zone).
Troubleshooting and Workarounds
A-5
Troubleshooting the Oracle Application Server Adapter for Databases
Solution
You must set the platformClassName for Oracle platforms, because these include
special workarounds for working with date-time values on Oracle. So, if you are
connecting to an Oracle9 platform, you must set the platformClassName
accordingly.
Due to an issue with the time portion of DATE being truncated with Oracle9 JDBC
drivers, the property oracle.jdbc.V8Compatible was set when using any Oracle
platform class name. Therefore, use
oracle.toplink.internal.databaseaccess.Oracle9Platform to solve the
time truncation problem.
However, starting with Oracle9, dates started to include millisecond precision. Setting
oracle.jdbc.V8Compatible in response had the drawback of returning the
milliseconds as 000, as an Oracle8 database did. (This also introduced an issue with
null IN/OUT DATE parameters for stored procedure support.) You do not see any
truncation (of the time portion or milliseconds) when using the Oracle9Platform
class.
You must also use the Oracle9Platform class if you have TIMESTAMPTZ and
TIMESTAMPLTZ.
If you want DATE to be treated like a date (with no time portion), set the
attribute-classification in the toplink_mappings.xml to java.sql.Date.
In general, if you are having an issue with a particular database, check to see if
TopLink has a custom platformClassName value for that database, and whether
you are using it.
See Section 4.5.5, &quot;Deployment&quot; and Table 4–19, &quot; Parameters Used in Application
Server Connection Pooling&quot; for more information.
A.1.10 TIMESTAMP Datatype Is Not Supported for a Microsoft SQL Server Database
Because the TIMESTAMP datatype is not supported, the best approach is to unmap a
TIMESTAMP column. Note the following in support of unmapping TIMESTAMP:
■
■
■
■
TIMESTAMP values can never be used as the primary key.
JDeveloper offline tables interprets TIMESTAMP as a dateTime type, although it
is actually a binary value; therefore, you must change the type anyway.
As a binary value, TIMESTAMP has no meaning or use after it is converted to XML
and base64 encoded.
TIMESTAMP values cannot be modified; therefore, at a minimum, you must mark
it read only.
Note that TIMESTAMP is similar to the pseudocolumn ROWID, which is technically a
column but is never mapped by default by the database adapter.
See Section 4.5.1, &quot;The OracleAS TopLink Mapping Workbench Project&quot; and go to the
steps for unmapping a mapping.
A.1.11 Handling a Database Adapter Fault
To understand how to handle faults, such as a unique constraint violation on inserts or
when a database or network is temporarily unavailable, see the InsertWithCatch
tutorial at Oracle_
Home\integration\orabpel\samples\tutorials\122.DBAdapter.
A-6 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Databases
A.1.12 Table Not Found: SQL Exception
Problem
A BPEL process modeled against one database does not run against another database.
The most likely cause for this problem is that you are using a different schema in the
second database. For example, if you run the wizard and import the table
SCOTT.EMPLOYEE, then, in the toplink_mappings.xml file, you see
SCOTT.EMPLOYEE. If you run the sample in the USER schema on another database,
you get a &quot;table not found&quot; exception.
Solution
Until qualifying all table names with the schema name is made optional, manually edit
toplink_mappings.xml and replace SCOTT. with nothing, as shown in the
following example.
Change:
&lt;project&gt;
&lt;project-name&gt;toplink_mappings&lt;/project-name&gt;
&lt;descriptors&gt;
&lt;descriptor&gt;
&lt;java-class&gt;BPELProcess1.A&lt;/java-class&gt;
&lt;tables&gt;
&lt;table&gt;SCOTT.A&lt;/table&gt;
&lt;/tables&gt;
To:
&lt;project&gt;
&lt;project-name&gt;toplink_mappings&lt;/project-name&gt;
&lt;descriptors&gt;
&lt;descriptor&gt;
&lt;java-class&gt;BPELProcess1.A&lt;/java-class&gt;
&lt;tables&gt;
&lt;table&gt;A&lt;/table&gt;
&lt;/tables&gt;
You must repeat this step every time after running the Adapter Configuration Wizard.
Note: Having EMPLOYEE on both the SCOTT and USER schemas, and
querying against the wrong table, can result in a problem that is
difficult to detect. For this reason, the database adapter qualifies the
table name with the schema name.
See Section 4.5.5, &quot;Deployment&quot; for more information.
A.1.13 Switching from a Development Database to a Production Database
See the following for more information:
■
Section 4.5.5, &quot;Deployment&quot;
■
Section A.1.12, &quot;Table Not Found: SQL Exception&quot;
Troubleshooting and Workarounds
A-7
Troubleshooting the Oracle Application Server Adapter for Databases
A.1.14 Only One Employee Per Department Appears
Problem
Many departments with many employees are read in, but only one employee per
department appears.
Solution
You must use a transform with a for-each statement. An Assign activity with a
too-simplistic XPath query can result in only the first employee being copied over.
For an example of how to use a transform for database adapter outputs, go to
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter\MasterDetail
A.1.15 Outbound SELECT on a CHAR(X) or NCHAR Column Returns No Rows
Problem
If you use an outbound SELECT to find all employees where firstName = some_
parameter, then you have a problem if firstName on the database is a CHAR
column, as opposed to a VARCHAR2 column.
It is a known problem with some databases that if you insert a CHAR value (for
example, ’Jane’) into a CHAR(8) field, then the database pads the value with extra
spaces (for example, ‘Jane ‘).
If you then execute the query
SELECT ... WHERE firstName = ‘Jane’;
no rows may be returned. Although you are querying for the same value that you
inserted, and some tools such as SQL*Plus and SQL Worksheet operate as expected,
the query does not work with the database adapter.
Solution
The best practice is to use a CHAR column for fields that must be fixed, such as SSN,
and VARCHAR2 for columns that can take a variable length, such as firstName.
Transforming the value to add padding may be difficult, and using SELECT to trim the
value on the database (as opposed to padding the other side) requires using SQL
statements. For example:
SELECT ... WHERE trim(firstName) = #firstName;
Note that # is an OracleAS TopLink convention for denoting input parameters.
A.1.16 ORA-00932: Inconsistent Datatypes Exception Querying CLOBs
Problem
When querying on table A, which has a one-to-one relationship to B, where B contains
a CLOB, you may see the following exception:
Exception Description: java.sql.SQLException: ORA-00932: inconsistent
datatypes: expected - got CLOB
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Solution
A SELECT returning CLOB values must not use the DISTINCT clause. The simplest
way to avoid DISTINCT is to disable batch attribute reading from A to B. Batch
reading is a performance enhancement that attempts to simultaneously read all Bs of
all previously queried As. This query uses a DISTINCT clause. Use joined reading
instead, or neither joined reading nor batch attribute reading.
Because both DISTINCT and CLOBs are common, you may see this problem in other
scenarios. For example, an expression like the following uses a DISTINCT clause:
SELECT DISTINCT dept.* from Department dept, Employee emp WHERE ((dept.ID =
emp.DEPTNO) and (emp.name = 'Bob Smith'));
See Section 4.5.2, &quot;Relational-to-XML Mappings (toplink_mappings.xml)&quot; for more
information about batch reading and joined reading.
A.1.17 ORA-17157: 4K/32K Driver Limit with CLOBs and BLOBs
Problem
When inserting large objects (LOBs), you may get an exception such as
java.sql.SQLException: setString can only process strings of less than 32766
characters Error Code: 17157
Solution
Check the platformClassName property in the oc4j-ra.xml file. For an Oracle
database, set the property to Oracle8Platform (for Oracle8) or Oracle9Platform
(for Oracle9i and Oracle10g). See Table 4–20, &quot; Database Platform Names&quot; for a list of
platformClassName properties for Oracle and third-party databases.
For more information, see &quot;How-To: Map Large Objects (LOBs) to Oracle Databases
with OracleAS TopLink&quot; at
http://www.oracle.com/technology/products/ias/toplink/technical/tips/lo
b/index.html
If you are using Oracle Database 10g and having difficulties with CLOBs, configure the
database adapter to use a data source, and add
&lt;propertyname=&quot;SetBigStringTryClob&quot; value=&quot;true&quot; /&gt; to the
&lt;data-source&gt; element in the OC4J data-sources.xml file.
See section &quot;Specifying Connection Information in the data-sources.xml File
(Recommended)&quot; in Chapter 4, &quot;Oracle Application Server Adapter for Databases&quot; for
more information.
Also, see &quot; Handling CLOBs - Made Easy with Oracle JDBC 10g&quot; at
http://www.oracle.com/technology/sample_
code/tech/java/codesnippet/jdbc/clob10g/handlingclobsinoraclejdbc10g.ht
ml
A.1.18 MERGE Sometimes Does UPDATE Instead of INSERT, or Vice Versa
Problem
You may sometimes notice that MERGE performs an UPDATE when it should do an
INSERT, or vice versa.
Troubleshooting and Workarounds
A-9
Troubleshooting the Oracle Application Server Adapter for Databases
Solution
MERGE works by first determining, for each element in the XML, whether the
corresponding database row exists or not. For each row, it does an existence check.
There are two known limitations with the existence check.
First, you can configure the existence check to either Check cache or Check database.
You can configure this for each descriptor (mapped table) in your Mapping
Workbench Project. The default is Check database, but TopLink's check database
works like &quot;check cache first, then database&quot; for performance reasons. If a row exists in
the cache, but was deleted from the database (the cache is stale), then you may see an
UPDATE when you expect an INSERT. You can configure caching and a
WeakIdentityMap is used by default, meaning rows are only held in memory while
being processed. However, Java garbage collection is not controlled by the adapter.
Therefore, if you insert a row, delete it in a separate process, and insert it again, all
within a very short time, you may see an INSERT and then an UPDATE. One solution is
to use NoIdentityMap. However, performance may suffer, and if you are doing
SELECT statements on a mapped schema with complex cycles (which you should
avoid!), then the adapter can be trapped in an endless loop when building the XML.
Second, there is a timing issue to doing a read first and then later an INSERT or
UPDATE. If the same row is simultaneously inserted by multiple invokes, then each
may do an existence check that returns false, and then all attempt an INSERT. This
does not seem realistic, but the following scenario did come up:
A polling receive reads 100 employee rows and their departments from database A.
With maxRaiseSize set to 1, 100 business process instances were initiated. This led
to 100 simultaneous invokes to database B, one for each employee row. No problems
were encountered when existence checking on employee, but some employees had the
same department. Hence, many of the 100 invokes failed because the existence checks
on department were more or less simultaneous.
There are two solutions to this problem. The first is to avoid it. In a data
synchronization-style application, setting maxRaiseSize to unlimited boosts
performance and eliminates this problem. A second solution is to retry MERGE in your
BPEL process. Optimistic lock and concurrency exceptions are common, and the best
solution is usually to wait and try again a short time later.
A.1.19 Message Loss with the MERGE Invoke Operation
Problem
Using the MERGE invoke operation, 100 rows are passed to the database adapter.
However, not all the rows are inserted into the database table as expected.
See Section A.1.18, &quot;MERGE Sometimes Does UPDATE Instead of INSERT, or Vice
Versa&quot; for more information about this problem. A flaw in MERGE existence checking
allows cases where a row is not inserted when it should be, thus appearing as message
loss.
Solution
Use NoIdentityMap instead of WeakIdentityMap.
1.
In JDeveloper BPEL Designer, open your project.
2.
In the Applications - Navigator, double-click the TopLink Mappings node under
Application Sources for your project.
The TopLink project appears in the TopLink Mappings - Structure pane.
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3.
Click each descriptor in the TopLink Mappings - Structure pane so that it appears
in the main window.
Along the top of the main window, you see the following tabs: Descriptor Info,
Queries, Query Keys, and Identity.
4.
Click the Identity tab.
5.
From the Identity Map list, select NoIdentityMap.
6.
Set Existence Checking to Check database (the default).
The value Check Cache becomes illegal when no caching is used.
7.
From File, select Save All.
8.
Run the Adapter Configuration Wizard again in edit mode to regenerate
toplink_mappings.xml.
9.
(Optional) Verify that the solution worked by closing and then reopening
toplink_mappings.xml.
You will see that NoIdentityMap globally replaced WeakIdentityMap.
10. Redeploy the process.
See Section 4.5.1, &quot;The OracleAS TopLink Mapping Workbench Project&quot; for more
information on editing the underlying TopLink project.
A.1.20 Integrity Violation Occurs with Delete or DeletePollingStrategy
Problem
Child records found an integrity violation with DeletePollingStrategy.
When deleting rows, you must be aware of integrity constraints. For example, if
DEPARTMENT has a one-to-many relationship to EMPLOYEE, that means DEPTID is a
foreign key on EMPLOYEE. If you delete a DEPARTMENT record, but not its employees,
then DEPTID becomes a broken link and this can trigger an integrity constraint.
This problem occurs because you imported a table by itself and did not import its
related tables. For example, if you import only the DEPARTMENT table from the
database and not the EMPLOYEE table, which has an integrity constraint on column
DEPTID, then the database adapter does not know about EMPLOYEE and it cannot
delete a record from DEPARTMENT. You receive an exception.
Solution
Make sure you import the master table and all its privately-owned relationships. Or
set the constraint on the database to CASCADE for deletions, or use a nondelete polling
strategy.
Make sure that the one-to-many relationship between DEPARTMENT and EMPLOYEE is
configured to be privately owned. It is by default, but if the above fails, check the
run-time X-R mappings file. See Section 4.2.1, &quot;Relational-to-XML Mapping&quot; for more
information.
If the problem is not this simple, OracleAS TopLink supports shallow/two-phase
inserts (but does not support this for DELETE). For example, if A has a foreign key
pointing to B, and B has a foreign key pointing to A, then there is no satisfactory order
by which you can delete both A and B. If you delete A first, then you orphan B. If you
delete B first, then you orphan A. The safest DELETE is a two-phase DELETE that
performs an UPDATE first as follows:
Troubleshooting and Workarounds
A-11
Troubleshooting the Oracle Application Server Adapter for Databases
UPDATE B set A_FK = null;
DELETE from A;
DELETE from B;
A.1.21 Some Queried Rows Appear Twice or Not at All in the Query Result
Problem
When you execute a query, you may get the correct number of rows, but some rows
appear multiple times and others do not appear at all.
This behavior is typically because the primary key is configured incorrectly. If the
database adapter reads two different rows that it thinks are the same (for example, the
same primary key), then it writes both rows into the same instance and the first row’s
values are overwritten by the second row’s values.
Solution
■
Open Application Sources &gt; TopLink &gt; TopLink Mappings. In the Structure
window, double-click PHONES. On the first page, you should see Primary Keys.
Make sure that the correct columns are selected to make a unique constraint.
■
Save and then edit the database partner link.
Click Next to the end, and then click Finish and Close.
■
Open your toplink_mappings.xml file. For the PHONES descriptor, you should
see something like this:
&lt;primary-key-fields&gt;
&lt;field&gt;PHONES.ID1&lt;/field&gt;
&lt;field&gt;PHONES.ID2&lt;/field&gt;
&lt;/primary-key-fields&gt;
A.1.22 Importing a Same-Named Table, with Same Schema Name, but Different
Databases
Problem
Importing a table from a database on one host and also importing a table with the
same name, and the same schema name, from a database on another host raises an
error.
Solution
Create one project against database #1 and model the adapter service. Next create a
second project against database #2 and model the adapter service. (Because the
databases are on different hosts, you use different database connections.) Then create a
third project, but do not run the Adapter Configuration Wizard. Instead, copy the
BPEL artifacts (WDSL, XSD, and toplink_mapings.xml) from projects one and
two. Deploy only the third project.
If the two tables are identical, or if the data you are interested in is identical, then you
need not follow the preceding procedure.
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A.1.23 Problems Creating a Relationship Manually for a Composite Primary Key
Problem
In the Relationship window of the Adapter Configuration Wizard, all elements of the
primary key appear and cannot be removed. Therefore, a foreign key referring to only
part of the composite primary key cannot be created.
Solution
Because foreign key constraints must map to every part of the primary key (not a
subset), there is no solution. The database adapter allows a foreign key only with a
corresponding primary key at the other end.
A.1.24 Must Fully Specify Relationships Involving Composite Primary Keys
The wizard does not let you create an ambiguous relationship. For example, assume
that a PurchaseOrder has a 1-1 billTo relationship to a Contact. For uniqueness,
the primary key of Contact is name and province. This means PurchaseOrder
must have two foreign keys (bill_to_name and bill_to_province). If there is
only one foreign key (bill_to_name), then the wizard does not allow you to create
that ambiguous 1-1 relationship. Otherwise, the same purchase order can be billed to
multiple people.
A.1.25 Database Adapter Throws an Exception When Using a BFILE
The BFILE, USER DEFINED, OBJECT, STRUCT, VARRAY, and REF types are not
supported.
A.1.26 During Design-Time, Wizard Does Not Allow Deletion of a Table
Because a table may be used for other services inside the same project, it cannot be
deleted within the interface. No problems occur if the unneeded table remains as part
of your project.
A.1.27 Changes to JDeveloper Project Are Made Even If Wizard Is Cancelled
Problem
When you run the Adapter Configuration Wizard, any changes that affect the TopLink
project (importing tables, creating or removing mappings, specifying an expression,
and so on) are applied immediately, and are not undone if you cancel the wizard.
Solution
If you remove one or more of the autogenerated relationships and later want to get
them back, you must reimport the tables containing the corresponding database
constraints.
A.1.28 Problems Removing a Relationship, Then Adding a New Relationship with the
Same Name
Problem
The database adapter can become unstable if, within the same wizard session, you
remove a relationship and then immediately create a relationship with the same name.
Troubleshooting and Workarounds
A-13
Troubleshooting the Oracle Application Server Adapter for Databases
Solution
You can do one of the following:
■
■
Give the new relationship a different name from the one you removed.
Finish the wizard after you remove the first relationship. Then, start the wizard
again in edit mode to add the new relationship, using the same name as the
deleted relationship.
A.1.29 Problems Importing Third-Party Database Tables
Problem
When you import tables from some third-party databases, JDeveloper can encounter
problems handling certain datatypes. You may see error messages such as &quot;Columns
of type VARCHAR cannot have a size specified&quot; or &quot;A primary or
unique key must define at least one column.&quot; An error message such as
&quot;null&quot; may also indicate an unsupported datatype.
Solution
Use the following workaround:
1.
Click OK to dismiss the error message; then cancel the Adapter Configuration
Wizard.
2.
Edit the offline table definition to change the type of the columns mentioned in the
error message to the closest supported type.
The offline table definitions for your project are under the Database Objects &gt;
schema name node in the Applications Navigator of JDeveloper BPEL Designer.
The following summarizes how to find the closest offline database table datatype:
Third-Party Database
Datatype
Offline Database Table
Datatype
XML Datatype
VARCHAR, CLOB, anything
string-like
VARCHAR2
xs:string
RAW, BYTE, BLOB
BLOB
xs:base64Binary
Any imprecise number
FLOAT
xs:double
Anything numeric
NUMERIC
xs:decimal
Any time value
DATE
xs:dateTime
The preceding table summarizes Table 4–4, &quot; Mapping Database Datatypes to XML
Primitive Types&quot;. Use Table 4–4 to find the closest supported type for your
third-party database. For xs:string, for example, use any of the types listed in
the Database Type column. When you change a datatype, only the corresponding
XML type is relevant. The varchar2, varchar, clob, and nvarchar types all
map to xs:string.
3.
Run the Adapter Configuration Wizard again and continue with the rest of the
wizard.
If you do not see the Database Objects &gt; schema name node in the Applications
Navigator after importing your tables, then add it manually by clicking the Add to
project name.jpr button in the Applications Navigator. Then select the database &gt;
schemaName &gt; schemaName.schema file.
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See Section 4.5.1.4, &quot;Configuring Offline Database Tables&quot; for more information.
See Section 4.6, &quot;Third-Party Database Support&quot; for information about using the
correct third-party JDBC drivers.
A.1.30 Problems Importing Object Tables
Problem
JDeveloper does not currently support importing object tables. If you try to import an
object table, then you see the following message: &quot;The following tables were
’Object Tables’ and aren’t supported offline.&quot;
Solution
There is currently no workaround for this problem.
A.1.31 Relationships Not Autogenerated When Tables Are Imported Separately
Problem
If tables are imported one at a time, relationships are not generated even if foreign key
constraints exist on the database.
Solution
Relationship mappings can be autogenerated only if all the related tables are imported
in one batch. When importing tables, you can select multiple tables to be imported as a
group. If you have related tables, then they should all be imported at the same time.
A.1.32 Primary Key Is Not Saved
Problem
If you try to create a relationship that has the same name as the primary key field
name, then you encounter a problem in which the PK field becomes unmapped.
Solution
To add the PK mapping back manually, follow these instructions:
1.
Open the Java source for the descriptor to which you want to add the mapping
(for example, Movies.java).
2.
Add a new Java attribute appropriate for the field to which you are mapping. For
example, if the PK of the Movies table is a VARCHAR field named TITLE, then
create a new attribute: &quot;private String title;&quot;
3.
Save the Java file.
4.
Click the TopLink Mappings node in the Applications - Navigator pane; then
choose the Descriptor from the TopLink Mappings - Structure pane. You see the
newly created attribute in the Descriptor as unmapped (in this example, title).
5.
Right-click the new attribute and select Map As &gt; Direct To Field.
6.
Double-click the new attribute. The TopLink Mappings editor should appear in the
main JDeveloper window. Change the database field to match the PK field on the
database (in this example, TITLE).
Troubleshooting and Workarounds
A-15
Troubleshooting the Oracle Application Server Adapter for Databases
7.
Click the Descriptor in the TopLink Mappings - Structure pane. Ensure that the
PK field has a check box next to it in the Primary Keys list.
8.
Run the Adapter Configuration Wizard again and continue with the rest of the
wizard.
A.1.33 Table Column Name Is a Java Keyword
Problem
If you import a database table that contains a column whose name is a Java keyword,
you receive the following error message:
The following error occurred: null
Solution
Do the following in JDeveloper BPEL Designer:
1.
Click OK in the error dialog box.
2.
Click Cancel in the Adapter Configuration Wizard.
3.
Click Cancel in the Create Partner Link dialog box.
4.
Open the .java file that was generated during the failed import. In the
Application Navigator, click Applications, then WorkspaceName, then
ProcessName, then Application Sources, then ProcessName, and then
TableName.java.
5.
Rename any Java fields that have errors. For example, you may see
private String class;
If you have syntax error highlighting turned on, this line will be underlined in red,
indicating there is a Java error. Change the line to
private String myClass;
(Or use some other nonreserved word.)
6.
Delete all the methods from the Java class. This step is normally handled
automatically by the database adapter, but must be done manually here because of
the error encountered during import. After you delete the methods, your class
looks something like this:
package MyBPELProcess;
public class MyDatabaseTable {
private String fieldOne;
private String fieldTwo;
...
private String fieldN;
}
7.
Remap the field that you renamed in Step 5. Click the Mapping tab at the bottom
of the Java Class editor. The Structure pane updates to show the Java class
attributes. Right-click the field that you renamed in step 5 (unlike the other fields,
it has a single dot icon indicating it is unmapped) and select Map As -&gt; Direct To
Field. In the main editor window, select the database field that this Java field maps
to (the field has the same name as the attribute did before you renamed it). Then
close the Java Class editor.
8.
From File, select Save All.
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9.
Rerun the Adapter Configuration Wizard. When you get to the Select Table page,
your database table will already be in the list. Select it and continue with the
wizard. Do not import the table again.
A.1.34 Catching a Database Exception
Problem
Extra steps are needed to add fault handling to a BPEL process.
Solution
The steps for catching a database exception are provided in the 122.DBAdapter
tutorial. Go to
Oracle_Home\integration\orabpel\samples\tutorials\122.DBAdapter\InsertWithCatch
See the readme.txt files in both the Insert and InsertWithCatch directories.
The readme for the InsertWithCatch tutorial describes two kinds of faults—binding
faults (for example, inserting a row that already exists) and remote faults (for example,
inserting a row when the network or database is unavailable). The readme provides
steps for catching an exception and a list of common Oracle database error codes.
See Oracle Database Error Messages for a complete list of error codes.
A.1.35 Connection Settings Error: Too Many Transactions
Problem
When using Oracle Lite, you may see the following error:
java.sql.SQLException: [POL-3261] there are too many transactions
This means that the maximum number of connections from the database has been
exceeded.
Oracle BPEL Server uses a data source called BPELServerDataSource, which is
configured with a large connection pool size. The connections may all be allocated to
the BPEL engine, thus leaving no connections available for the database adapter.
Solutions
Try the following solutions, in order of preference.
Solution 1
Use an Oracle database instead of Oracle Lite. This error occurs with Oracle Lite only.
Solution 2
Try reducing the values for max-connections and, in particular, for
min-connections. You may need to experiment to find values that work in your
environment. Start with a value of 5 for both max-connections and
min-connections and see if your performance is acceptable. You must use higher
values for a production database.
To set the values for max-connections and min-connections:
1.
Open data-sources.xml, located in
Oracle_Home\integration\orabpel\appserver\oc4j\j2ee\home\config
Troubleshooting and Workarounds
A-17
Troubleshooting the Oracle Application Server Adapter for Databases When Using Stored Procedures
2.
In the Oracle Lite datasources section, set max-connections and
min-connections:
&lt;!-- Use these datasources to connect to Oracle Lite --&gt;
&lt;data-source class=&quot;com.evermind.sql.DriverManagerDataSource&quot;
name=&quot;BPELServerDataSource&quot;
location=&quot;loc/BPELServerDataSource&quot;
xa-location=&quot;BPELServerDataSource&quot;
ejb-location=&quot;jdbc/BPELServerDataSource&quot;
connection-driver=&quot;oracle.lite.poljdbc.POLJDBCDriver&quot;
username=&quot;system&quot;
password=&quot;any&quot;
max-connections=&quot;5&quot;
min-connections=&quot;5&quot;
connection-retry-interval=&quot;30&quot;
max-connect-attempts=&quot;10&quot;
url=&quot;jdbc:[email protected]:100:orabpel&quot;/&gt;
Solution 3
Reduce the number of applications that access Oracle Lite. Multiple concurrent BPEL
processes are one application, but can use all the connections.
A.1.36 ORA-01747: invalid user.table.column, table.column, or column specification,
When Using SELECT FOR UPDATE
Ensure that the oc4j-ra.xml file uses the correct value for platformClassName.
See Table 4–20, &quot; Database Platform Names&quot; for the values for various databases. If the
database you are using is listed in the table, use the value shown. For example, use
DB2Platform, not DatabasePlatform, if you are using a DB2 database.
A.2 Troubleshooting the Oracle Application Server Adapter for Databases
When Using Stored Procedures
The following sections describe possible issues and solutions when using the database
adapter for stored procedures.
A.2.1 Design Time: Unsupported or Undefined Parameter Types
Problem
Using an unsupported or undefined parameter type in the chosen API is a common
problem. Consider the following procedure:
PROCEDURE PROC (O OBJ) AS BEGIN … END;
In this example, OBJ refers to a type that is undefined.
After you click Finish on the final page of the wizard, an attempt to generate the XSD
is made, which produces the following error message:
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The message indicates that the named parameter, O, which is of type OBJ, is either not
defined or is otherwise inaccessible.
To generate an XSD for APIs containing parameters whose types are user-defined,
those types must first be defined in the database and be accessible through the
associated service connection. This error also occurs if such types have not been
created (that is, implemented) in the database or if the database is inaccessible.
Solution
Ensure that only supported datatypes are used as types for parameters when choosing
an API. If the types are user-defined, check to ensure that the types are defined in the
database and that the database is accessible when the attempt to generate the XSD is
made.
A.2.2 Design Time: Referencing User-Defined Types in Other Schemas
Problem
When the type of one or more of the parameters in the chosen API is a user-defined
type that belongs to a different schema, a design-time problem can occur.
Assume type OBJ is created in SCHEMA2, as in
CREATE TYPE OBJ AS OBJECT (X NUMBER, Y VARCHAR2 (10));
And, a procedure is created in SCHEMA1 that has a parameter whose type is
SCHEMA2.OBJ, as in
CREATE PROCEDURE PROC (O SCHEMA2.OBJ) AS BEGIN … END;
If you attempt to create the XSD for procedure PROC, you may see the following error:
PLS-00201: identifier SCHEMA1.OBJ must be declared
Solution
SCHEMA1 must grant permission to SCHEMA2 so that SCHEMA2 can refer to type OBJ
from SCHEMA1, as in
SQL&gt; GRANT EXECUTE ON OBJ TO SCHEMA2;
See Section 4.7.2.8, &quot;Referencing Types in Other Schemas&quot; for more information.
Troubleshooting and Workarounds
A-19
Troubleshooting the Oracle Application Server Adapter for Databases When Using Stored Procedures
A.2.3 Run Time: Parameter Mismatches
Problem
A mismatch between the formal parameters provided by the instance XML and the
actual parameters that are defined in the signature of the stored procedure is a
common run-time problem. When this type of error occurs, the invoke activity that
tried to execute the stored procedure faults, as shown in Figure A–1.
Figure A–1 Example of a Faulted Invoke Due to MIsmatched Parameters
The bindingFault has three parts—code, summary, and detail. The information for
these parts comes from the java.sql.SQLException that gets thrown by JDBC
when it attempts to execute the stored procedure. The code is the ORA error number,
seen in Figure A–1 as 6550 and as ORA-06550 in the summary and detail parts. The
summary includes an adapter-specific error message followed by the message from
the SQLException and a suggested resolution to the issue. The detail contains just
the message from the SQLException.
As shown in Figure A–1, the ADDEMPLOYEES stored procedure failed to execute due to
&quot;wrong number or types of arguments&quot; passed into the API. Possible causes for this
problem include:
■
An element corresponding to one of the required parameters was not provided in
the instance XML.
Solution: Add the necessary element to resolve the issue.
■
More elements than were specified in the XSD were included in the instance XML.
Solution: Remove the extra elements from the XML.
■
The XSD does not accurately describe the signature of the stored procedure. For
example, if the type of one of the parameters were to change and the XSD was not
regenerated to reflect that change, a type mismatch can occur between the
db:type of the element and the new type of the modified parameter.
Solution: Ensure that the parameters match the signature of the API, as indicated
in the summary part of the bindingFault.
A.2.4 Run Time: Stored Procedure Not Defined in the Database
Problem
A bindingFault can also occur if the stored procedure is not defined in the database
when an attempt to execute it is made. In this example, the ADDEMPLOYEES API is
invoked, but fails to execute because it is not defined. The invoke activity faults, as
shown in Figure A–2.
A-20 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Files/FTP
Figure A–2
PL/SQL is revealing that &quot;... identifier ADDEMPLOYEES must be declared,&quot; which is
an indication that the stored procedure may not be defined in the database. This can
occur, for example, if the procedure was dropped sometime between when the process
was deployed and when the procedure was invoked. This can also occur if the
required privileges to execute the stored procedure have not been granted.
Solution
Ensure that the API is defined in the database, as indicated in the summary, and that
the appropriate privileges to execute that procedure have been granted.
Some run-time errors can occur if the instance XML does not conform to the XSD
generated for the chosen API. XML validation can be enabled in the partner link that
coincides with the execution of the API. Edit the partnerLinkBinding in the BPEL
suitcase located in your process bpel.xml file, as shown in bold:
&lt;partnerLinkBinding name=”PROC”&gt;
&lt;property name=”wsdlLocation”&gt;Proc.wsdl&lt;/property&gt;
&lt;property name=”validateXML”&gt;true&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
Adding the validateXML property and setting it to true enables XML validation for
all instance XML passed into the service associated with the partner link that executes
the API.
XML validation can also be enabled globally in Oracle BPEL Console. Click Manage
BPEL Domain and look for the validateXML property. Setting the value to true causes
all XML to be validated. Turning on XML validation helps catch and avoid problems
that are associated with the instance XML (rather than the adapter run time).
A.3 Troubleshooting the Oracle Application Server Adapter for Files/FTP
The following sections describe possible issues and solutions when using the Oracle
Application Server Adapter for Files/FTP (file and FTP adapters).
A.3.1 Changing Logical Names with the Adapter Configuration Wizard
If you later rerun the Adapter Configuration Wizard and change a previously specified
logical name to a different name, both the old and new logical names appear in the
bpel.xml file. You must manually edit the bpel.xml file to remove the old logical
name.
Troubleshooting and Workarounds
A-21
Troubleshooting the Oracle Application Server Adapter for Files/FTP
A.3.2 Creating File Names with Spaces with the Native Format Builder Wizard
While the Native Format Builder Wizard does not restrict you from creating native
schema file names with spaces, it is recommended that your file names do not have
spaces in them.
A.3.3 Common User Errors
This section describes common user errors.
■
■
On the Adapter Configuration Wizard - Messages window (Figure 2–5), you can
select the Native format translation is not required (Schema is Opaque) check
box. Opaque cannot be selected in only one direction. Opaque must be selected in
the both inbound and outbound directions.
Messages have a different meaning based on whether they are inbound or
outbound. For example, assume you make the following selections:
–
Select 2 from the Publish Messages in Batches of list (Figure 2–3) in the
inbound direction.
–
Select 3 from the Number of Messages Equal list (Figure 2–7) in the outbound
direction.
If an inbound file contains two records, it is split (debatched) into two messages.
However, because 3 was specified in the outbound direction, a file is not created.
This is because there are not three outbound messages available. Ensure that you
understand the meaning of inbound and outbound messages before selecting
these options.
■
■
■
■
■
If the file adapter or the FTP adapter is not able to read or get your file,
respectively, it may be because you selected to match file names using the regular
expression (regex), but are not correctly specifying the name (Figure 2–3). See
Table 2–2 for details.
You may have content that does not require translation (for example, a JPG or GIF
image) that you just want to send &quot;as is.&quot; The file is passed through in base-64
encoding. This content is known as opaque. To do this, select the Native format
translation is not required (Schema is Opaque) check box on the Adapter
Configuration Wizard - Messages window (Figure 2–5). If you select this check
box, you do not need to specify an XSD file for translation.
The inbound directory must exist for the file adapter or the FTP adapter to read or
get your file, respectively.
If the FTP adapter cannot connect to a remote host, ensure that you have
configured the Oracle_
Home\integration\orabpel\system\appserver\oc4j\j2ee\home\appl
ication-deployments\default\FtpAdapter\oc4j-ra.xml deployment
descriptor file for adapter instance JNDI name and FTP server connection
information. See Section 2.2.3, &quot;FTP Adapter for Get File Concepts&quot; for
instructions.
You cannot use completely static names such as po.txt for outbound files.
Instead, outgoing file names must be a combination of static and dynamic portions.
This is to ensure the uniqueness of outgoing files names, which prevents files from
being inadvertently overwritten. See section &quot;Specifying the Outbound File
Naming Convention&quot; in Chapter 2, &quot;Oracle Application Server Adapter for
Files/FTP&quot; for instructions on creating correct outbound file names.
A-22 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
■
Two header files are created in the Applications Navigator after you finish
running the Adapter Configuration Wizard in both directions:
–
typeAdapterInboundHeader.wsdl
Provides information such as the name of the file being processed and its
directory path, as well as data about which message and part define the
header operations
–
typeAdapterOutboundHeader.wsdl
Provides information about the outbound file name
where type is either ftp or file.
You can define properties in these header files. For example, you can specify
dynamic inbound and outbound file names through use of the InboundHeader_
msg and OutboundHeader_msg message names in the
typeAdapterInboundHeader.wsdl and
typeAdapterOutboundHeader.wsdl files, respectively.
You can also set header variables that appear in the BPEL process file. Header
variables are useful for certain scenarios. For example, in a file propagation
scenario, files are being moved from one file system to another using the file
adapter. In this case, it is imperative that you maintain file names across the two
systems. Use file headers in both directions and set the file name in the outbound
file header to use the file name in the inbound file header.
See the online help available with the Adapters tab of invoke, receive, reply, and
pick - OnMessage branch activities for more information.
■
The Adapter Configuration Wizard - File Modification Time window (Figure 2–11)
prompts you to select a method for obtaining the modification times of files on the
FTP server.
You must perform the following procedure to obtain this information:
1.
Determine the modification time format supported by the FTP Server by
running the command mdtm or ls -al (whichever is supported by the
operating system).
2.
Determine the time difference between the system time (time on which Oracle
BPEL Server is running) and the file modification time. Obtain the file
modification time by running either mdtm or ls -al on the FTP server.
3.
Manually add the time difference to the bpel.xml as a property:
&lt;activationAgents&gt;
&lt;activationAgent ...&gt;
&lt;property name=&quot;timestampOffset&quot;&gt;2592000000&lt;/property&gt;
4.
Specify the Substring Begin Index field and End Index field values that you
determine by running the mdtm or ls -al command on the FTP server.
A.4 Troubleshooting the Oracle Application Server Adapter for Advanced
Queuing
The following sections describe possible issues and solutions when using the Oracle
Application Server Adapter for Advanced Queuing (AQ adapter).
Troubleshooting and Workarounds
A-23
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
A.4.1 Inbound Errors
The following sections describe possible issues and solutions for inbound errors when
using the AQ adapter.
A.4.1.1 JNDI Lookup Failed
Sample error:
&lt;timestamp&gt; &lt;WARN&gt; &lt;default.collaxa.cube.activation&gt; &lt;AdapterFramework::Inbound&gt;
JNDI lookup of 'eis/AQ/aqSample2' failed due to: eis/AQ/aqSample2 not found
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AdapterFramework::Inbound&gt;
Error while performing endpoint Activation: ORABPEL-12510
Unable to locate the JCA Resource Adapter via WSDL port element jca:address.
The Adapter Framework is unable to startup the Resource Adapter specified in the
WSDL jca:address element: {http://xmlns.oracle.com/pcbpel/wsdl/jca/}address:
location='eis/AQ/aqSample2'
Problem
It is likely that either 1) the resource adapter’s RAR file has not been deployed
successfully to the OC4J Application Server or 2) the location attribute in
$J2EE_HOME/application-deployments/default/deployed-adapter-name
/oc4j-ra.xml
has not been set to eis/AQ/aqSample2. In the last case, you may have to add a new
connector-factory entry (connection) to the oc4j-ra.xml. Correct this and then
restart the BPEL/OC4J Application Server.
Solution
1. Look for the file
$J2EE_HOME/application-deployments/default/aqAdapter/
oc4j-ra.xml.
This file should be created when the adapter is deployed, which occurs the first
time Oracle BPEL Process Manager is started. If the adapter is undeployed for
some reason, deploy the adapter with the following command, then follow step 2:
java -jar $J2EE_HOME/admin.jar ormi://localhost admin welcome
-deployconnector -file &lt;path to AQAdapter.rar&gt; -name
AqAdapter&gt;
2.
If $J2EE_HOME/application-deployments/default/aqAdapter
/oc4j-ra.xml exists, make sure the JNDI location is defined in oc4j-ra.xml.
For example:
&lt;connector-factory location=&quot;eis/AQ/aqSample2&quot; connector-name=&quot;AQ Adapter&quot;&gt;
&lt;config-property name=&quot;connectionString&quot;
value=&quot;jdbc:oracle:thin:@myhost:1521:appdb2&quot;/&gt;
&lt;config-property name=&quot;userName&quot; value=&quot;scott&quot;/&gt;
&lt;config-property name=&quot;password&quot; value=&quot;tiger&quot;/&gt;
&lt;/connector-factory&gt;
A.4.1.2 During Initialization, I/O Exception: Network Adapter Did Not Establish the
Connection
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
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DBConnection_connect: database error while try to connect to
jdbc:oracle:thin:@localhost:1521:ORCL : Io exception: The Network Adapter could
not establish the connection
Solution
If the connectionString is correct, make sure the database and listener are up, then
redeploy the process.
If the connectionString is not correct:
1.
Change the connectionString in
$J2EE_HOME\application-deployments\default\AqAdapter\
oc4j-ra.xml.
2.
Restart Oracle BPEL Process Manager.
A.4.1.3 Incorrect Username/Password
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AdapterFramework::Inbound&gt;
Error while performing endpoint Activation: ORABPEL-11929
SQL error while creating managed (database) connection.
SQL error while creating managed (database) connection: Error while trying to
connect to database.
Error while trying to connect to database using connect string
&quot;jdbc:oracle:thin:@localhost:1521:appdb2 - java.sql.SQLException: ORA-01017:
invalid username/password; logon denied
Solution
1. Make sure you have the correct username and password in $J2EE_
HOME\application-deployments\default\AqAdapter\oc4j-ra.xml.
2.
Restart Oracle BPEL Process Manager.
A.4.1.4 Queue Not Found
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
oracle.AQ.AQException: JMS-190: Queue SCOTT.AQ_SUPPORTED_ADT_IN not found
at oracle.AQ.AQUtil.throwAQEx(AQUtil.java:196)
at oracle.AQ.AQOracleSession.getQueue(AQOracleSession.java:720)
at oracle.tip.adapter.aq.database.Queue.connect(Queue.java:102)
at oracle.tip.adapter.aq.database.MessageReader.init(MessageReader.java:575)
Solution
Create the queue and redeploy the process. If this process is deployed from the
samples, all queue creation scripts are located in sql\create_queues.sql under
each project.
A.4.1.5 User Does Not Have DBMS_AQIN Privileges, Which Are Required by the AQ
Java API
Sample error:
2005-04-20 16:10:52,695&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ
Adapter::Inbound&gt; oracle.AQ.AQOracleSQLException: ORA-06550: line 1, column 7:
PLS-00201: identifier 'DBMS_AQIN' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
Troubleshooting and Workarounds
A-25
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
at oracle.AQ.AQOracleQueue.dequeue(AQOracleQueue.java:1795)
at oracle.AQ.AQOracleQueue.dequeue(AQOracleQueue.java:1307)
at
oracle.tip.adapter.aq.database.MessageReader.readMessage(MessageReader.java:399)
at
oracle.tip.adapter.aq.inbound.AQActivationSpecDequeuer.run(AQActivationSpecDequeue
r.java:163)
at oracle.tip.adapter.fw.jca.work.WorkerJob.go(WorkerJob.java:51)
at oracle.tip.adapter.fw.common.ThreadPool.run(ThreadPool.java:267)
at java.lang.Thread.run(Thread.java:534)
Solution
Log on to the database using sys as sysdba, GRANT EXECUTE ON SYS.DBMS_AQIN
to &lt;username&gt;;. No deployment is necessary because this failure occurs after the
connection has succeeded, the adapter automatically reconnects until the error is gone
or the process is undeployed.
A.4.1.6 Translation Error
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
MessageReader_readMessage: Received TranslationException
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
ORABPEL-11211
DOM Parsing Exception in translator.
DOM parsing exception in inbound XSD translator while parsing InputStream.
Check the error stack and fix the cause of the error. Contact oracle support if
error is not fixable.
at
oracle.tip.pc.services.translation.xlators.xsd.XSDTranslator.translateFromNative(X
SDTranslator.java:131)
Solution
Look for the rejected message and find out why it has failed translation. For instance,
the message may not be XML, or the XML root element may be incorrect, or the
message may be blank. If a rejection handler has been defined for this process, look for
the message in the rejection handler. Otherwise, look for the message in the default
rejection handler, which is located at
Oracle_Home\integration\orabpel\domains\default\archive\jca
\AQMessageRejectionHandler\rejectedMessages
For an example of how a user can define the rejection handler, look in
ORACLE_
HOME\integration\orabpel\samples\tutorials\124.AQAdapter\AQMessa
geRejectionHandler
A.4.1.7 Subscriber Already Exists When Using MessageRuleSelector
Sample error:
&lt;timestamp&gt; &lt;INFO&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
Subscriber PriorityOneDequeuer already exists in the database. If the subscriber
does not contain the rule that you want, please undeploy the business process,
drop the subscriber with the following sql*plus command, and redeploy. DECLARE
subscriber sys.aq$_agent;
BEGIN
subscriber := sys.aq$_agent('&lt;subscriber_name&gt;', NULL, NULL);
A-26 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
DBMS_AQADM.REMOVE_SUBSCRIBER(
queue_name =&gt; '&lt;queue_name&gt;',
subscriber =&gt; subscriber); END;
Solution
This is not a problem if the subscriber has been generated with the rule the user
expects. The adapter can create new rule-based subscribers, but cannot modify
existing ones. Hence, the first time you deploy the adapter with a nonnull value for
MessageSelectorRule, a subscriber is created if the consumer does not already
exist, using the consumer as the subscriber and the MessageSelectorRule as the
rule. This message appears in any subsequent redeployment or restart of Oracle BPEL
Process Manager.
You can determine if the rule is what you want for the subscriber by entering the
following SQL command:
SQL&gt; select name, rule, queue from AQ$RuleBased_Raw_In_R;
NAME
-----------------------------RULE
-------------------------------------------------------------------------------QUEUE
-----------------------------PRIORITYONEDEQUEUER
priority = 1
RULEBASED_RAW_IN
A.4.2 Outbound Errors
As a general note, problems in the outbound direction are often not caught at
deployment time, because an outbound thread is only activated if there is a message
going to outbound.
A.4.2.1 JNDI Lookup Failed
Sample error:
Adapter Framework unable to create outbound JCA connection.
file:/C:/050420/integration/orabpel/domains/default/tmp/.bpel_File2AQBLOB_
1.0.jar/EnqueueBlobPayload.wsdl [ Enqueue_ptt::Enqueue(opaque) ] - : The Adapter
Framework was unable to establish an outbound JCA connection due to the following
issue: ORABPEL-12510
Unable to locate the JCA Resource Adapter via WSDL port element jca:address.
The Adapter Framework is unable to startup the Resource Adapter specified in the
WSDL jca:address element: {http://xmlns.oracle.com/pcbpel/wsdl/jca/}address:
location='eis/AQ/aqSample3'
The reason for this is most likely that either 1) the resource adapter’s RAR file has not
been deployed successfully to the OC4J Application server or 2) the location
attribute in $J2EE_
HOME/application-deployments/default/deployed-adapter-name/oc4jra.xmlhas not been set to eis/AQ/aqSample3. In the last case you may have to add
a new connector-factory entry (connection) to oc4j-ra.xml. Correct this and
then restart the BPEL/OC4J Application Server
Solution
See the solution section for the same problem in the inbound section, as described in
Section A.4.1, &quot;Inbound Errors&quot;.
Troubleshooting and Workarounds
A-27
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
A.4.2.2 I/O Exception: Network Adapter Could Not Establish the Connection
2005-04-20 18:41:40,570&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.ws&gt;
&lt;AdapterFramework::Outbound&gt;
file:/C:/050420/integration/orabpel/domains/default/tmp/.bpel_File2AQBLOB_
1.0.jar/EnqueueBlobPayload.wsdl [ Enqueue_ptt::Enqueue(opaque) ] - Could not
invoke operation 'Enqueue' against the 'AQ Adapter' due to: ORABPEL-12511
Adapter Framework unable to create outbound JCA connection.
file:/C:/050420/integration/orabpel/domains/default/tmp/.bpel_File2AQBLOB_
1.0.jar/EnqueueBlobPayload.wsdl [ Enqueue_ptt::Enqueue(opaque) ] - : The Adapter
Framework was unable to establish an outbound JCA connection due to the following
issue: ORABPEL-11929
SQL error while creating managed (database) connection.
SQL error while creating managed (database) connection: Error while trying to
connect to database.
Error while trying to connect to database using connect string
&quot;jdbc:oracle:thin:@localhost:1521:appdb - java.sql.SQLException: Io exception:
The Network Adapter could not establish the connection&quot;
Solution
If the connectionString is not correct, do the following:
1.
Change the connectionString in $J2EE_
HOME\application-deployments\default\AqAdapter\oc4j-ra.xml.
2.
Restart Oracle BPEL Process Manager.
If the connectionString is correct, make sure the database and listener are up. If
you had enabled outbound retry, the message should be automatically retried when
the database and its listener are up.
To configure outbound retry, set the retryMaxCount property and retryInterval
property for the partner link in bpel.xml.
For example, the following configuration means 10 retries, at 60 second intervals.
&lt;partnerLinkBinding name=&quot;EnqueueBLOBPayload&quot;&gt;
&lt;property name=&quot;wsdlLocation&quot;&gt;EnqueueBlobPayload.wsdl&lt;/property&gt;
&lt;property name=&quot;retryMaxCount&quot;&gt;10&lt;/property&gt;
&lt;property name=&quot;retryInterval&quot;&gt;60&lt;/property&gt;
&lt;/partnerLinkBinding&gt;
A.4.2.3 Queue Not Found
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.ws&gt; &lt;AQ Adapter::Outbound&gt;
oracle.AQ.AQException: JMS-190: Queue SCOTT.BLOBPAYLOAD_QUEUE not found
at oracle.AQ.AQUtil.throwAQEx(AQUtil.java:196)
at oracle.AQ.AQOracleSession.getQueue(AQOracleSession.java:720)
at oracle.tip.adapter.aq.database.Queue.connect(Queue.java:102)
at oracle.tip.adapter.aq.database.MessageWriter.init(MessageWriter.java:231)
Solution
Same solution as the inbound Queue not found problem. Create the queue and
redeploy the process. If this process is deployed from the samples, all queue creation
scripts are located in sql\create_queues.sql under each project.
A.4.2.4 Incorrect Username/Password
Sample error:
file:/C:/050420/integration/orabpel/domains/default/tmp/.bpel_File2AQBLOB_
1.0.jar/EnqueueBlobPayload.wsdl [ Enqueue_ptt::Enqueue(opaque) ] - : The Adapter
A-28 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
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Framework was unable to establish an outbound JCA connection due to the following
issue: ORABPEL-11929
SQL error while creating managed (database) connection.
SQL error while creating managed (database) connection: Error while trying to
connect to database.
Error while trying to connect to database using connect string
&quot;jdbc:oracle:thin:@localhost:1521:appdb2 - java.sql.SQLException: ORA-01017:
invalid username/password; logon denied.
Solution
1. Make sure you have the correct username and password in $J2EE_
HOME\application-deployments\default\AqAdapter\oc4j-ra.xml.
2.
Restart Oracle BPEL Process Manager.
A.4.2.5 User Does Not Have DBMS_AQIN Privileges, Which Are Required by the AQ
Java API
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.ws&gt; &lt;AQ Adapter::Outbound&gt;
oracle.AQ.AQOracleSQLException: ORA-06550: line 1, column 7:
PLS-00201: identifier 'DBMS_AQIN' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
at oracle.AQ.AQOracleQueue.enqueue(AQOracleQueue.java:1267)
Solution
Log on to the database using sys as sysdba, GRANT EXECUTE ON SYS.DBMS_AQIN
to &lt;username&gt;;. Again, if you have retry configured for this partner link, retry
automatically happens.
A.4.2.6 Translation Error
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.ws&gt; &lt;AQ Adapter::Outbound&gt; ORABPEL-11101
Translation Failure.
Translation to native failed. Invalid text 'blahblah' in element: 'Root-Element'.
Check the error stack and fix the cause of the error. Contact oracle support if
error is not fixable.
at
oracle.tip.pc.services.translation.xlators.nxsd.NXSDTranslatorImpl.translateToNati
ve(NXSDTranslatorImpl.java:502)
at
oracle.tip.adapter.aq.database.MessageWriter.translateToNative(MessageWriter.java:
1102)
at oracle.tip.adapter.aq.database.MessageWriter.doEnqueue(MessageWriter.java:494)
Solution
1. From Oracle BPEL Console, click the Instances tab.
2.
Click the failed instance and select Debug.
3.
Look for the variable passed to the invoke activity that failed. You should notice
this variable match schema definition. Back track in the Debug window to find
out why.
Troubleshooting and Workarounds
A-29
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
A.4.3 JDeveloper BPEL Designer Errors
I have an AQ inbound to AQ outbound end-to-end scenario. How do I copy the
priority from an inbound queue to an outbound queue?
Solution: Create both the inbound header and outbound header, and use an assign
activity to copy the priority.
Create the inbound header:
1.
Click the receive activity that is linked to the AQ Inbound partner link.
2.
Select the Adapters tab and click the flashlight icon to the right of the Header
Variable field.
3.
Right click Variables and select Create Variable.
4.
Enter a name such as inbound_header.
5.
Click Message type and the flashlight icon.
6.
If a payloadHeader is not required (most cases):
In the Type Chooser window, click Type Explorer &gt; Message Types &gt; Partner
Links &gt; inbound_partnerlink_name &gt; inbound_service.wsdl &gt; Imported WSDL &gt;
aqAdapterInboundHeader.wsdl &gt; Message Types &gt; Header. Go to step 8.
7.
If a payloadHeader is required (only if PayloadHeaderRequired=&quot;true&quot; in
the JCA operation section of service_name.wsdl):
In the Type Chooser window, click Type Explorer &gt; Message Types &gt; Partner
Links &gt; inbound_partnerlink_name &gt; Message Types &gt; Header_msg.
8.
Click OK to exit the Type Chooser window.
9.
While the variable is still highlighted, click OK to pick this variable.
The variable now appears as the header variable.
10. Click OK to exit the receive activity.
Create the outbound header:
1.
Click the invoke activity that is linked to the AQ outbound partner link.
2.
Select the Adapters tab and click the flashlight icon to the right of the Header
Variable field.
3.
Right click Variables and select Create Variable.
4.
Enter a name such as outbound_header.
5.
Click Message type and click the flashlight icon.
6.
If a payloadHeader is not required (most cases):
In the Type Chooser window, click Type Explorer &gt; Message Types &gt; Partner
Links &gt; outbound_partnerlink_name &gt; outbound_service.wsdl &gt; Imported WSDL
&gt; aqAdapterOutboundHeader.wsdl &gt; Message Types &gt; Header. Go step 8.
7.
If a payloadHeader is required, only if PayloadHeaderRequired=&quot;true&quot; in
the JCA operation section of service_name.wsdl:
In the Type Chooser window, click Type Explorer &gt; Message Types &gt; Partner
Links &gt; outbound_partnerlink_name &gt; Message Types &gt; Header_msg.
8.
Click OK to exit the Type Chooser window.
9.
While the variable is still highlighted, click OK to pick this variable.
A-30 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
10. The variable now appears as the header variable. Click OK to exit the receive
activity.
In an Assign activity:
1.
Click the Copy Rules tab and select Create.
2.
In the From section: drill down to priority for the inbound header variable.
3.
In the To section: drill down to priority for the outbound header variable.
4.
Click OK to exit Create Copy Rule window.
5.
Click OK to exit the Assign window.
I redefined the adapter WSDL by stepping through the wizard again. Why doesn't
my service_name.wsdl change?
Solution:
It did work, but JDeveloper BPEL Designer did not refresh the file properly. Close the
service_name.wsdl file and open it again.
I redefined the adapter service WSDL using the wizard. But at deployment time, I
got the following error:
Process &quot;AQSupportedADTTypes&quot; (revision &quot;1.0&quot;) compilation failed.
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.engine.deployment&gt;
&lt;CubeProcessLoader::create&gt; BPEL validation failed.
BPEL source validation failed, the errors are:
[Error ORABPEL-10007]: unresolved messageType
[Description]: in line 16 of
&quot;C:\050420\integration\orabpel\domains\default\tmp\.bpel_AQSupportedADTTypes_
1.0.jar\AQSupportedADTTypes.bpel&quot;, WSDL messageType
&quot;{http://xmlns.oracle.com/pcbpel/adapter/aq/Enqueue/}Header_msg&quot; of variable
&quot;out_header&quot; is not defined in any of the WSDL files.
[Potential fix]: Make sure the WSDL messageType
&quot;{http://xmlns.oracle.com/pcbpel/adapter/aq/Enqueue/}Header_msg&quot; is defined in
one of the WSDLs referenced by the deployment descriptor.
Solution:
When you redefine the adapter service WSDL, you also need to redefine the header
variables. The creation of header variables the input element in the JCA binding
section which defines the header.
For example:
&lt;input&gt;
&lt;jca:header message=&quot;tns:Header_msg&quot; part=&quot;Header&quot;/&gt;
&lt;/input&gt;
When the adapter service is redefined, the old WSDL file is overwritten. Delete the old
header variables and re-create them.
A.4.4 Translation Error
Sample error:
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
MessageReader_readMessage: Received TranslationException
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
ORABPEL-11211
DOM Parsing Exception in translator.
Troubleshooting and Workarounds
A-31
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
DOM parsing exception in inbound XSD translator while parsing InputStream.
Check the error stack and fix the cause of the error. Contact oracle support
if error is not fixable.
at
oracle.tip.pc.services.translation.xlators.xsd.XSDTranslator.translateFromNative(X
SDTranslator.java:131)
Solution:
Look for the rejected message and find out why it has failed translation. The message
may not be XML or the XML root element maybe incorrect, or the message may be
blank. If a rejection handler has been defined for this process, look for the message in
the rejection handler. Otherwise, look for the message in the default rejection handler
which is located at:
ORACLE_
HOME\integration\orabpel\domains\default\archive\jca\AQMessageRe
jectionHandler\rejectedMessages
For an example of how a user can define the rejection handler, look in
ORACLE_
HOME\integration\orabpel\samples\tutorials\124.AQAdapter\AQMessa
geRejectionHandler
A.4.5 Other Problems
I have a new adapter *.RAR file; how do I redeploy the adapter?
1. Save a copy of
$J2EE_HOME\application-deployments\default\AqAdapter
\oc4j-ra.xml so you have your endpoint information.
2.
Undeploy the adapter by entering the following command:
java -jar $JE22_HOME\admin.jar ormi://localhost admin welcome
-undeployconnector -name AqAdapter
3.
Deploy the new .rar file by entering the following command:
java -jar $J2EE_HOME/admin.jar ormi://localhost admin welcome
-deployconnector -file &lt;rarfile&gt; -name AqAdapter
4.
Modify
$J2EE_HOME\application-deployments\default\AqAdapter
\oc4j-ra.xml to add your endpoints.
5.
Restart Oracle BPEL Process Manager. You should not have to redeploy your
business processes.
Subscriber already exists when using MessageRuleSelector
&lt;timestamp&gt; &lt;INFO&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ Adapter::Inbound&gt;
Subscriber PriorityOneDequeuer already exists in the database. If the
subscriber does not contain the rule that you want, please undeploy the
business process, drop the subscriber with the following sql*plus command,
and redeploy.
DECLARE
subscriber sys.aq$_agent;
BEGIN
subscriber := sys.aq$_agent('&lt;subscriber_name&gt;', NULL, NULL);
DBMS_AQADM.REMOVE_SUBSCRIBER(
A-32 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Troubleshooting the Oracle Application Server Adapter for Advanced Queuing
queue_name =&gt; '&lt;queue_name&gt;',
subscriber =&gt; subscriber);
END;
Solution:
This is not a problem if the subscriber has been generated with the rule the user
expects. The adapter can create new rule-based subscribers, but cannot modify
existing ones. Therefore, the first time you deploy the adapter with a nonnull value for
MessageSelectorRule, a subscriber is created if the consumer does not already
exist, using the consumer as the subscriber and the MessageSelectorRule as the
rule. This message would appear in any subsequent redeployment or restart of Oracle
BPEL Process Manager.
You can determine if the rule is what you want for the subscriber by entering the
following SQL command: select name, rule, queue from AQ$ QUEUE_
TABLE_NAME_R;
SQL&gt; select name, rule, queue from AQ$RuleBased_Raw_In_R;
NAME
-----------------------------RULE
-------------------------------------------------------------------------------QUEUE
-----------------------------PRIORITYONEDEQUEUER
priority = 1
RULEBASED_RAW_IN
You do not have DBMS_AQIN privileges, which are required by the AQ Java API
2005-04-20 16:10:52,695&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt; &lt;AQ
Adapter::Inbound&gt;
oracle.AQ.AQOracleSQLException: ORA-06550: line 1, column 7:
PLS-00201: identifier 'DBMS_AQIN' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
at oracle.AQ.AQOracleQueue.dequeue(AQOracleQueue.java:1795)
at oracle.AQ.AQOracleQueue.dequeue(AQOracleQueue.java:1307)
at
oracle.tip.adapter.aq.database.MessageReader.readMessage(MessageReader.java:399)
at
oracle.tip.adapter.aq.inbound.AQActivationSpecDequeuer.run(AQActivationSpecDeq
ueuer.java:163)
at oracle.tip.adapter.fw.jca.work.WorkerJob.go(WorkerJob.java:51)
@ at oracle.tip.adapter.fw.common.ThreadPool.run(ThreadPool.java:267)
at java.lang.Thread.run(Thread.java:534)
Solution:
Log on to the database using sys as sysdba 'GRANT EXECUTE ON SYS.DBMS_
AQIN to username;'. No deployment is necessary because this failure occurs after
the connection has succeeded. The adapter automatically attempts to reconnect until
the error is gone or the process is undeployed.
Failed JNDI Lookup
&lt;timestamp&gt; &lt;WARN&gt; &lt;default.collaxa.cube.activation&gt;
&lt;AdapterFramework::Inbound&gt; JNDI lookup of 'eis/AQ/aqSample2' failed due to:
eis/AQ/aqSample2 not found
&lt;timestamp&gt; &lt;ERROR&gt; &lt;default.collaxa.cube.activation&gt;
Troubleshooting and Workarounds
A-33
Troubleshooting the Oracle Application Server Adapter for Java Message Service (JMS)
&lt;AdapterFramework::Inbound&gt; Error while performing endpoint Activation:
ORABPEL-12510
Unable to locate the JCA Resource Adapter via WSDL port element jca:address.
The Adapter Framework is unable to startup the Resource Adapter specified in
the WSDL jca:address element:
@ {http://xmlns.oracle.com/pcbpel/wsdl/jca/}address:
location='eis/AQ/aqSample2'
Solution:
The reason for this is most likely that either:
1.
The resource adapter’s RAR file has not been deployed successfully to the OC4J
Application Server.
2.
The Resource Adapters RAR file has not been deployed successfully to the
location attribute in:
$J2EE_
HOME/application-deployments/default/deployed-adapter-name/oc
4j-ra.xml has not been set to eis/AQ/aqSample2.
In this case, you may have to add a new connector-factory entry (connection)
to the oc4j-ra.xml file. Add the correct entry and then restart the BPEL
Application Server.
How to fix:
1.
Look for the file $J2EE_
HOME/application-deployments/default/aqAdapter/oc4j-ra.xml.
This file should be created when the adapter is deployed, which occurs the first
time Oracle BPEL Process Manager is started. If the adapter is undeployed for
some reason, deploy the adapter with the following command, then follow step 2:
java -jar $J2EE_HOME/admin.jar ormi://localhost admin welcome
-deployconnector -file &lt;path to AQAdapter.rar&gt; -name
AqAdapter
2.
If $J2EE_
HOME/application-deployments/default/aqAdapter/oc4j-ra.xml
exists, make sure the JNDI location is defined in the oc4j-ra.xml file.
&lt;connector-factory location=&quot;eis/AQ/aqSample&quot; connector-name=&quot;AQ Adapter&quot;&gt;
&lt;config-property name=&quot;connectionString&quot;
value=&quot;jdbc:oracle:thin:@myhost:1521:appdb2&quot;/&gt;
&lt;config-property name=&quot;userName&quot; value=&quot;scott&quot;/&gt;
@ &lt;config-property name=&quot;password&quot; value=&quot;tiger&quot;/&gt;
&lt;/connector-factory&gt;
A.5 Troubleshooting the Oracle Application Server Adapter for Java
Message Service (JMS)
JMS Provider Error
&lt;JMSAdapter::Outbound&gt;
ORABPEL-12165
ERRJMS_PROVIDER_ERR.
Could not produce message due to JMS provider error. Please examine the log
file to determine the problem.
.......
......
A-34 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Summary
.......
Caused by: javax.jms.JMSException: MQJMS1013: operation invalid whilst
session is using asynchronous delivery.
Solution:
This exception occurs when the inbound JMS adapter and the outbound JMS adapter
for MQ provider use same JNDI name. To avoid this exception, specify different JNDI
names in WSDL files for inbound and outbound JMS adapter for MQ provider.
Another workaround is to specify the UseMessageListener property as false in
the inbound WSDL file. For example:
UseMessageListener=&quot;false&quot;
A.6 Summary
This appendix describes Oracle BPEL Process Manager troubleshooting methods.
Troubleshooting and Workarounds
A-35
Summary
A-36 Oracle Application Server Adapters for Files, FTP, Databases, and Enterprise Messaging User’s Guide
Index
A
activationAgent property
fatalErrorFailoverProcess, 2-13
ActivationSpec parameters, 2-16
Adapter Configuration Wizard
configuring the database adapter, 4-18, 4-82
configuring the file adapter, 4-19
design time, 4-31
starting, 1-1, 2-3, 4-19
stored procedures, 4-60
Adapter Configuration wizard
using with the AQ adapter, 3-6
using with the file adapter, 2-3
using with the FTP adapter, 2-3
using with the JMS adapter, 5-4
adapter services
defined in WSDL file, 4-38
adapters
configuring, 1-1
creating header variables, 3-21
definition, 1-1
error handling, 2-12
in JDeveloper BPEL Designer, 1-1
service names, 1-2
ADT payload types
AQ adapter, 3-4
after-read strategy
database adapter, 4-28
APIs, 4-63
application.xml file
configuring OJMS, 5-13
configuring Tibco JMS, 5-16
AQ adapter
ADT payload types, 3-4
AQ header properties, 3-3
correlation identifier, 3-2
dequeue mode, 3-3
enqueue-specific features, 3-2
features, 3-1
generated WSDL file, 3-15
message priority, 3-2
multiconsumer queue, 3-2
payload schema, 3-5
use cases, 3-6
AQ header properties
AQ adapter, 3-3
AQ headers, 3-21
arrayIdentifierLength
construct, 6-44
arrayLength
construct, 6-44
arrays
native schema, 6-29
arrayTerminatedBy
construct, 6-44
assign
construct, 6-44
audit link
instance execution process, 4-90
B
batch processing
support with the file and FTP adapters,
batching
definition, 2-10
byteOrder
construct, 6-43
2-7
C
cellSeparatedBy
construct, 6-44
choiceCondition
construct, 6-44
clauses
clauses to add to impact the sign position in
COBOL Copybook, 6-5
supported COBOL Copybook clauses, 6-3
COBOL Copybook
clauses to add to impact the sign position, 6-5
definition, 6-2
multiple root levels, 6-14
Native Format Builder wizard support, 6-2
numeric types, 6-20
single root level, virtual decimal, fixed length
array, 6-17
supported clauses, 6-3
use cases, 6-14
user inputs, 6-3
variable length array, 6-19
Index-1
compiling
FulfillOrder process, 4-89
complex structure
native schema, 6-10
conditional processing
native schema, 6-33
conditionValue
construct, 6-44
config timeout parameter
configuring in the server.xml file, 2-11
connection information
data-sources.xml file, 4-46
oc4j-ra.xml file, 4-45
WSDL file, 4-45
connection pooling
database adapter, 4-53
constructs
arrayIdentifierLength, 6-44
arrayLength, 6-44
arrayTerminatedBy, 6-44
assign, 6-44
byteOrder, 6-43
cellSeparatedBy, 6-44
choiceCondition, 6-44
conditionValue, 6-44
dateFormat, 6-44
encoding, 6-43
headerLines, 6-43
headerLinesTerminatedBy, 6-43
identifierLength, 6-44
itemSeparatedBy, 6-44
leftsurroundedBy, 6-44
length, 6-44
listTerminatedBy, 6-44
lookAhead, 6-44
native schema, 6-43
paddedBy, 6-44
padStyle, 6-44
quotedBy, 6-44
rightsurroundedBy, 6-44
skip, 6-44
skipLines, 6-44
skipUntil, 6-44
standalone, 6-43
startsWith, 6-44
stream, 6-43
style, 6-45
surroundedBy, 6-45
terminatedBy, 6-45
uniqueMessageSeparator, 6-43
variable, 6-45
variables, 6-45
version, 6-43
xmlversion, 6-43
control table
database adapter, 4-15
copy rules
creating, 4-87, 4-88
correlation identifier
AQ adapter, 3-2
Index-2
creating relationships
database adapter, 4-23
CSV
native schema, 6-8
D
database adapter
after-read strategy, 4-28
choosing a polling strategy, 4-52
connection pooling, 4-53
control table, 4-15
creating a partner link, 4-81
creating a project, 4-80
creating an invoke activity, 4-85
creating relationships, 4-23
creating the object model, 4-26
datatype conversions, 4-73, 4-74
defining keys, 4-22
defining the WHERE clause, 4-26
deleting the rows that were read, 4-29
deployment, 4-44
design overview, 4-2
existence checking, 4-52
features, 4-1
function return values, 4-74
generated XML schema, 4-43
importing and selecting tables, 4-21
inbound distributed polling, 4-53
last updated, 4-14
last-read ID, 4-13
locking, 4-53
logical delete, 4-11
mapping any relational schema to any XML
schema types, 4-8
maxRaiseSize, 4-52
merge operations, 4-9
null values, 4-74
operation type, 4-20
performance, 4-51
physical delete, 4-10
polling strategies, 4-10
query by example operations, 4-9
REF CURSOR support, 4-75
relational types to XML schema types, 4-7
relational-to-XML mappings, 4-4, 4-36
relationship reading, 4-53
running the FulfillOrder process, 4-89
sequencing table, 4-13, 4-14, 4-30
SQL operations as Web services, 4-8
stored procedure design time WSDL and XSD
generation, 4-65
stored procedures and functions, 4-60, 4-71
supported primitive datatypes, 4-66
third-party database support, 4-54
TopLink Mapping Workbench project, 4-32
toplink_mappings.xml file, 4-3
tutorials, 4-17
update a field in the table, 4-29
use cases, 4-10, 4-17
validating, compiling, and deploying, 4-89
value binding, 4-71
database connection
configuring in the oc4j-ra.xml file, 4-3, 4-19
database connection information
data-sources.xml file, 4-46
oc4j-ra.xml file, 4-45
WSDL file, 4-45
database operations
DML operations, 4-9
data-sources.xml file, 4-46
datatype conversions
database adapter, 4-73, 4-74
dateFormat
construct, 6-44
dates
native schema, 6-41
DBActivationSpec, 4-41
DBInsert process
selecting for a partner link, 4-84
DBReadInteractionSpec, 4-40
DBWriteInteractionSpec, 4-39
debatching
definition, 2-3, 2-10
file adapter use case, 2-40
supported with the file and FTP adapters, 2-3
defining keys
database adapter, 4-22
deleting rows that were read
database adapter, 4-29
delimited format
Native Format Builder wizard support, 6-2
delimiters
file adapter use case, 2-40
deploying
FulfillOrder process, 4-89
deployment
of database adapter, 4-44
dequeue mode
AQ adapter, 3-3
DML operations
merge, 4-9
query by example, 4-9
with the database adapter, 4-9
domain
passwords, 4-89
DTD format
Native Format Builder wizard support, 6-2
E
encoding
construct, 6-43
enqueue-specific features
AQ adapter, 3-2
error handling
fatalErrorFailoverProcess property, 2-13
inbound direction for file and FTP adapters,
outbound direction for file and FTP
adapters, 2-25
2-12
rejectedMessageHandlers property, 2-12
uniqueMessageSeparater property, 2-14
errors
default error directory, 2-15
Esc key
stopping creation of XPath expressions, 4-87, 4-88
existence checking
database adapter, 4-52
F
fatalErrorFailoverProcess property
error handling, 2-13
file adapter
ActivationSpec parameters, 2-16
architecture, 2-3
archiving successfully processed files, 2-6
batch processing, 2-7
batching multiple inbound messages, 2-10
batching multiple outbound files, 2-24
binary data format support, 2-2
Cobol Copybook format support, 2-2
debatching use case, 2-40
delimited format support, 2-2
dynamic outbound file names, 2-23
features, 2-1
file delimiter use case, 2-40
file polling, 2-10
file read concepts, 2-4
file read operation, 2-2
file reading use case, 2-40
file size delivery limitations, 2-7
file write concepts, 2-19
file writing use case, 2-40
fixed positional format support, 2-2
fixed positional use case, 2-40
guaranteed delivery and recovery, 2-15
inbound direction, 2-4
inbound header WSDL file, 2-16
inbound WSDL file, 2-15
including and excluding files, 2-8
limitations on outbound file name lengths, 2-21
logical and physical directory paths, 2-6, 2-20
opaque support, 2-2
outbound file directory, 2-19
outbound file naming conventions, 2-21
outbound header WSDL file, 2-27
outbound WSDL file, 2-26
processing large files, 2-11
supported formats, 2-1
supported naming patterns, 2-7
synchronous reads using an invoke activity, 2-17
translating native data, 2-11
use cases, 2-39
write read operation, 2-2
XML format support, 2-2
file names
limitations on file adapter outbound file name
lengths, 2-21
file polling, 2-10
Index-3
file reading
file adapter use case, 2-40
file writing
file adapter use case, 2-40
fixed length data
native schema, 6-22
fixed length structure
native schema, 6-9
fixed positional
file adapter use case, 2-40
fixed-length positional format
Native Format Builder wizard support, 6-2
from Oracle BPEL Console, 2-15
FTP adapter
ActivationSpec parameters, 2-16
architecture, 2-3
archiving successfully processed files, 2-6
batch processing, 2-7
batching multiple inbound messages, 2-10
batching multiple outbound files, 2-24
binary data format support, 2-1
Cobol Copybook format support, 2-1
creating an Oracle Wallet, 2-38
delimited format support, 2-1
dynamic outbound file names, 2-23
features, 2-1
file inbound file directory, 2-19
file modification times, 2-30
file polling, 2-10
file read concepts, 2-4
file read operation, 2-2
file write concepts, 2-19
file write operation, 2-2
fixed positional format support, 2-1
guaranteed delivery and recovery, 2-15
inbound direction, 2-4, 2-29
inbound header WSDL file, 2-16
inbound WSDL file, 2-15
including and excluding files, 2-8
installing and configuring OpenSSL, 2-35
installing and configuring vsftpd, 2-36
logical and physical directory paths, 2-6, 2-20
opaque support, 2-2
outbound direction, 2-33
outbound file naming conventions, 2-21
outbound header WSDL file, 2-27
outbound WSDL file, 2-26
processing large files, 2-11
restrictions on use of RESTART and RECOVERY
commands, 2-28
secure FTP overview, 2-34
serverLineSeparator property for determining line
separations during binary file transfers, 2-29
specifying connection information to an FTP
server, 2-27
SSL, 2-34
supported formats, 2-1
supported naming patterns, 2-7
translating native data, 2-11
use cases, 2-39, 2-40
Index-4
using secure FTP, 2-34
XML format support, 2-1
FTP server
specifying configuration information in the
oc4j-ra.xml file, 2-28
specifying connection information to, 2-27
FulfillOrder process
deploying, 4-89
running, 4-89
function return values
database adapter, 4-74
functions
See stored procedures and functions, 4-60
H
header properties
JMS adapter, 5-3
header variables
creating for an adapter, 3-21
specifying, 2-23
headerLines
construct, 6-43
headerLinesTerminatedBy
construct, 6-43
I
IBM Websphere JMS configuration, 5-17
identifierLength
construct, 6-44
importing tables
database adapter, 4-21
inbound distributed polling
database adapter, 4-53
invoke activities
creating, 4-85
invoke activity
synchronous reads using the file adapter, 2-17
itemSeparatedBy
construct, 6-44
J
Java pattern letters
supported with file and FTP adapters, 2-21
JDeveloper BPEL Designer
adapters, 1-1
JDK regular expressions
supported with the file and FTP adapters, 2-7, 2-9
JMS adapter
concepts, 5-1
generated WSDL files, 5-10
header properties, 5-3
IBM Websphere JMS configuration, 5-17
OC4J JMS configuration, 5-15
oc4j-ra.xml file, 5-12
OJMS configuration, 5-13
point-to-point, 5-2
produce message procedure, 5-12
publish/subscribe, 5-3
Tibco JMS configuration, 5-16
use cases, 5-2
L
last updated
database adapter, 4-14
last-read ID
database adapter, 4-13
leftsurroundedBy
construct, 6-44
length
construct, 6-44
lists
native schema, 6-27
listTerminatedBy
construct, 6-44
LocalBPELServer
using to deploy a process, 4-89
locking
database adapter, 4-53
logical delete
database adapter, 4-11
logical directory paths, 2-6, 2-20
lookAhead
construct, 6-44
M
maxRaiseSize
database adapter, 4-52
merge
DML operations, 4-9
message priority
AQ adapter, 3-2
message recovery, 2-15
messages
file size delivery limitations with the file
adapter, 2-7
multiconsumer queue
AQ adapter, 3-2
N
namespaces
schema must have a namespace, 2-12
naming patterns
supported with the file and FTP adapters,
Native Format Builder wizard
COBOL Copybook format support, 6-2
creating native schema files, 6-1
delimited format support, 6-2
DTD format support, 6-2
fixed-length positional format, 6-2
overview of windows, 6-6
starting, 2-12
supported formats, 6-2
native schema files
creating, 6-1
native schemas
arrayIdentifierLength construct, 6-44
2-7
arrayLength construct, 6-44
arrays, 6-29
arrayTerminatedBy construct, 6-44
assign construct, 6-44
byteOrder construct, 6-43
cellSeparatedBy construct, 6-44
choiceCondition construct, 6-44
complex structure, 6-10
conditional processing, 6-33
conditionValue construct, 6-44
constructs, 6-43
CSV, 6-8
dateFormat construct, 6-44
dates, 6-41
encoding construct, 6-43
fixed length data, 6-22
fixed length structure, 6-9
headerLines construct, 6-43
headerLinesTerminatedBy construct, 6-43
identifierLength construct, 6-44
itemSeparatedBy construct, 6-44
leftsurroundedBy construct, 6-44
length construct, 6-44
lists, 6-27
listTerminatedBy construct, 6-44
lookAheadconstruct, 6-44
paddedBy construct, 6-44
padStyle construct, 6-44
quotedBy construct, 6-44
rightsurroundedBy construct, 6-44
separated value file structure, 6-9
skip construct, 6-44
skipLines construct, 6-44
skipUntil construct, 6-44
standalone construct, 6-43
startsWith construct, 6-44
stream construct, 6-43
style construct, 6-45
surrounded data, 6-26
surroundedBy construct, 6-45
terminated data, 6-24
terminatedBy construct, 6-45
understanding, 6-7
uniqueMessageSeparator construct, 6-43
use cases, 6-7
variable construct, 6-45
variables, 6-41
variables construct, 6-45
version construct, 6-43
xmlversion construct, 6-43
null values
database adapter, 4-74
O
object models
database adapter, 4-26
object type inheritance, 4-70
OC4J JMS configuration, 5-15
oc4j-ra.xml file, 4-45
Index-5
configuring a database connection in, 4-3, 4-19
configuring an FTP server connection in, 2-28
JMS connection factory definitions, 5-12
location of, 2-28, 4-48
OJMS configuration, 5-13
opaque format
supported with file and FTP adapters, 2-2
OpenSSL
installing and configuring, 2-35
Oracle Applications adapter, 1-2
Oracle BPEL Console
accessing, 4-89
manually performing message recovery, 2-15
running a process, 4-89
Oracle Wallet
installing and configuring, 2-38
OracleAS Adapter for AQ
See AQ adapter, 3-1
OracleAS Adapter for Files
See file adapter, 2-1
OracleAS Adapter for FTP
See FTP adapter, 2-1
OracleAS Adapter for JMS
See JMS adapter, 5-1
overloading, 4-63
P
paddedBy
construct, 6-44
padStyle
construct, 6-44
partner links
creating, 4-81
passwords
domain, 4-89
payload schema
AQ adapter, 3-5
payloads
large, 4-52
performance
database adapter, 4-51
physical delete
database adapter, 4-10
point-to-point
JMS adapter, 5-2
polling strategies
database adapter, 4-10
polling strategy
database adapter, 4-52
primitive datatypes
supported, 4-66
procedures
See stored procedures and functions, 4-60
processing large files
with the file adapter, 2-11
produce message procedure
JMS adapter, 5-12
projects
creating, 4-80
Index-6
publish/subscribe
JMS adapter, 5-3
Q
query by example
DML operations, 4-9
quotedBy
construct, 6-44
R
recovery
of messages from Oracle BPEL Console, 2-15
REF CURSOR support
database adapter, 4-75
regex constructs
supported, 2-7, 2-9
rejectedMessageHandlers property
error handling, 2-12
relational-to-XML mappings, 4-36
for database adapter, 4-4
relationship reading
database adapter, 4-53
rightsurroundedBy
construct, 6-44
running
FulfillOrder, 4-89
S
schemas
must have a namespace, 2-12
secure FTP
using with the FTP adapter, 2-34
separated value file structure
native schema, 6-9
sequencing table
database adapter, 4-13, 4-14
sequencing table updates
database adapter, 4-30
serverLineSeparator property
determines line separations during binary file
transfers, 2-29
server.xml file
location of, 2-11
processing large files, 2-11
service names
creating, 2-3
in adapters, 1-2
skip
construct, 6-44
skipLines
construct, 6-44
skipUntil
construct, 6-44
SSL
creating an Oracle Wallet, 2-38
installing and configuring OpenSSL, 2-35
installing and configuring vsftpd, 2-36
secure FTP overview, 2-34
using secure FTP with the FTP adapter, 2-34
standalone
construct, 6-43
startsWith
construct, 6-44
stored procedures and functions
creating a stored procedure use case, 4-78
database adapter, 4-60
design time WSDL and XSD generation, 4-65
invocation at run time, 4-71, 4-74
overloaded procedures, 4-63
run time, 4-71
searching for, 4-61
stream
construct, 6-43
style
construct, 6-45
surrounded data
native schema, 6-26
surroundedBy
construct, 6-45
synchronous reads
using the file adapter in an invoke activity, 2-17
T
terminated data
native schema, 6-24
terminatedBy
construct, 6-45
third-party database support
database adapter, 4-54
Tibco JMS configuration, 5-16
TopLink Mapping Workbench project, 4-32
toplink_mappings.xml file, 4-3, 4-32, 4-36
translation
native data, 2-25
not required, 2-12
of native data, 2-11
requires native schemas, 6-1
translator
converts native data to XML and back, 2-2
troubleshooting and workarounds
AQ adapter, A-23
database adapter, A-1
file adapter, A-21
FTP adapter, A-21
using stored procedures with the database
adapter, A-18
U
uniqueMessageSeparater property
error handling, 2-14
uniqueMessageSeparator
construct, 6-43
updating a field in a table
database adapter, 4-29
use cases
creating a stored procedure, 4-78
using the AQ adapter, 3-6
using the database adapter, 4-17
using the File and FTP adapters, 2-39
using the JMS adapter, 5-2
using the Native Format Builder, 6-7
user-defined types, 4-68, 4-69
using the Native Format Translator for removing or
adding namespaces to XML with no
namespace, 6-13
V
validating
FulfillOrder process, 4-89
value binding
database adapter, 4-71
variable
construct, 6-45
variables
automatically creating, 4-85
construct, 6-45
native schema, 6-41
version
construct, 6-43
vsftpd server
installing and configuring, 2-36
W
Web services
SQL operations as, 4-8
WHERE clause
database adapter, 4-26
WSDL file, 4-45
defining the adapter service, 4-38
inbound direction for file and FTP adapters, 2-15
outbound direction for file and FTP
adapters, 2-26
selecting for a partner link, 4-84
WSDL files
AQ adapter, 3-15
JMS adapter, 5-10
specifying logical directory paths, 2-6, 2-20
WSIL browser
selecting a service, 4-84
X
XML schema
generated by Adapter Configuration wizard, 4-43
xmlversion
construct, 6-43
XPath expressions
creating, 4-87, 4-88
XSD attributes, 4-67
Index-7
Index-8
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Key features

Provides adapters for files, FTP, databases, and enterprise messaging.
Integrates with Oracle BPEL Process Manager.
Supports secure FTP.
Offers native data translation.
Enables guaranteed delivery and recovery from server failures.
Includes a Native Format Builder Wizard.
Frequently asked questions

Oracle Application Server Adapters provide a way to connect Oracle BPEL Process Manager to various external systems, such as files, FTP servers, databases, and messaging queues.
The installation and configuration process is outlined in the User's Guide provided with the software.
The adapters provide comprehensive error handling mechanisms to ensure message reliability and recovery.
Common use cases include file integration, data synchronization between databases, and message-based communication between systems.
What is the purpose of Oracle Application Server Adapters?

How do I install and configure the Oracle Application Server Adapters?

What kind of error handling is available with the adapters?

What are some common use cases for the Oracle Application Server Adapters?

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