TIBCO Jaspersoft Studio development software User guide
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TIBCO J
ASPERSOFT
®
S
TUDIO
U
SER
G
UIDE
R
ELEASE
6.2
http://www.jaspersoft.com
Copyright ©2005-2015, TIBCO Software Inc. All rights reserved. Printed in the U.S.A. TIBCO, the TIBCO logo, TIBCO Jaspersoft, the TIBCO Jaspersoft logo, TIBCO Jaspersoft iReport Designer, TIBCO JasperReports
Library, TIBCO JasperReports Server, TIBCO Jaspersoft OLAP, TIBCO Jaspersoft Studio, and TIBCO Jaspersoft
ETL are trademarks and/or registered trademarks of TIBCO Software Inc. in the United States and in jurisdictions throughout the world. All other company and product names are or may be trade names or trademarks of their respective owners.
This is version 1115-JSP62-09 of the Jaspersoft Studio User Guide.
T
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C
ONTENTS
Chapter 1 Getting Started with Jaspersoft Studio
1.1 Introduction to Jaspersoft Studio
1.2 Installing Jaspersoft Studio
1.2.4 Updating Your Workspace to Jaspersoft® Studio 6.2 and Higher
1.2.5 Compatibility Between Versions
1.2.6 Accessing the Source Code
1.3.1 User Interface Components
1.4 Understanding the Design tab
1.4.4 Specifying Report Properties
1.5 Units of Measure in Jaspersoft Studio
1.5.2 Changing the Field Unit of Measure
1.6 Exporting Reports with Jaspersoft Studio
1.6.3 Choosing Report Templates for PDF
Chapter 2 Concepts of JasperReports
2.1 JRXML Sources and Jasper Files
2.2 Data Sources and Print Formats
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2.3.2 Expression Operators and Object Methods
2.3.3 Using an If-Else Construct in an Expression
2.4 Using Java as a Language for Expressions
2.5 Using Groovy as a Language for Expressions
2.6 Using JavaScript as a Language for Expressions
2.7 Using JasperReports Extensions in Jaspersoft Studio
3.2 Inserting, Selecting, and Positioning Elements
3.2.4 Positioning Elements in Containers
3.7 Inserting Page and Column Breaks
3.8 Working with Composite Elements
3.8.1 Creating and Editing Composite Elements
3.8.2 Exporting and Importing Composite Elements
3.9 Anchors, Bookmarks, and Hyperlinks
3.9.2 Overview of Hyperlink Configuration
3.9.7 Working with Report Units
3.10 Advanced Elements and Custom Components
3.12 Custom Visualization Component
Chapter 4 Creating a Simple Report
4.2 Adding and Deleting Report Elements
4.2.1 Adding Fields to a Report
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Chapter 5 Accessing JasperReports Server from Jaspersoft Studio
5.1 Connecting to JasperReports Server
5.1.1 Advanced Connection Settings
5.1.2 Using Single Sign-on with JasperReports Server
5.2 Publishing a Report to JasperReports Server
5.2.1 Publishing Report Resources
5.2.2 Choosing a Data Source for a Published Report
5.2.3 Example of Publishing a Report
5.3 Publishing a Report Template
5.3.1 Creating a Report Template based on a Template in the Server
5.3.2 Report Template Styles in Jaspersoft® Studio
5.4 Creating and Uploading a Topic for Ad Hoc Views
5.5 Managing Repository Objects through Jaspersoft Studio
5.5.1 Adding, Modifying and Deleting Resources
5.6 Creating and Uploading Chart Themes
5.8 Understanding the repo: Syntax
5.9 Adding a Date/Time Stamp to Scheduled Output in JasperReports Server
6.2 Registration of Fields from a SQL Query
6.3 Registration of JavaBean Fields
6.5.1 Configuring a Report's Metadata for PDF 508 Tags
6.5.2 Configuring a Report's Metadata for Use With the JSON Data Exporter
7.2 Creating and Customizing Templates
7.3.1 Creating a Template Directory
7.3.3 Creating a Template Thumbnail
7.4 Adding Templates to Jaspersoft Studio
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8.3 Using Parameters in Queries
8.3.1 Using Parameters in a SQL Query
8.3.2 Using Parameters with Null Values
8.3.5 Passing Parameters from a Program
9.1 Defining or Editing a Variable
9.2 Base Properties of a Variable
9.3 Other Properties of a Variable
9.3.5 Incrementer Factory Class Name
10.1 Creating and Editing Data Adapters
10.1.1 Creating a Data Adapter
10.1.2 Importing and Exporting Data Adapters
10.2 Using Data Adapters in Reports and Datasets
10.2.1 Data Adapter For a Report
10.2.2 Data Adapters and Report Deployment
10.3 Working with Database JDBC Connections
10.3.1 Creating a Database JDBC Connection
10.3.2 Troubleshooting a Database JDBC Connection
10.3.3 Using a Database JDBC Connection
10.4 Working with a MongoDB Data Adapter
10.4.1 Creating a Native MongoDB Connection
10.4.2 Creating a MongoDB JDBC Data Source
10.5 Working with a Native Cassandra Connection
10.5.1 Creating a Native Cassandra Data Adapter
10.5.2 Using a Cassandra Connection
10.6 Working with a Collection of JavaBeans Data Adapter
10.6.1 Implementing the Factory Class for a Collection of JavaBeans
10.6.2 Creating a Data Adapter from a Factory Class
10.7 Working with XML Data Adapters
10.7.1 Creating a Node Set for an XML Document
10.7.2 Creating an XML Data Adapter
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10.7.3 Registration of Fields for an XML Data Adapter
10.7.4 XML Data Adapters and Subreports
10.8 Working with XML/A Data Adapters
10.8.1 Registration of fields in XML/A Providers
10.9 Working with CSV Data Adapters
10.9.1 Registration of the Fields for a CSV Data Adapter
10.10 Using the Empty Record Data Adapter
10.10.1 Understanding the Empty Record Implementation
10.11 Working with the JRDataSource Interface
10.11.1 Understanding the JRDataSource Interface
10.11.2 Implementing a New JRDataSource
10.11.3 Using a Custom JasperReports Data Source with Jaspersoft Studio
10.12 A Look at TIBCO Spotfire Information Links
11.4.1 Table Properties for Managing Columns
11.4.2 Working with Individual Columns
Chapter 12 Working with Charts
12.5.1 Using the Chart Theme Designer
12.5.2 Editing Chart Theme XML
12.5.3 Creating a JasperReports Extension for a Chart Theme
Chapter 13 HTML5 Charts in Commercial Editions
13.2.1 Creating an HTML5 chart
13.2.4 Setting Advanced Options for HTML5 Charts
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13.4 Dual-Axis, Multi-Axis, and Combination Charts
13.5 Hyperlinks in HTML5 Charts
13.5.1 Creating Hyperlinks in HTML5 Charts
13.5.2 Working with Bucket Properties and Hidden Measures
Chapter 14 Working With the Map Component
14.1 Working with Map Properties
14.2 Viewing Authentication Properties
14.3.4 Using a dataset to set markers on the map
14.4.2 Defining a Path Statically
14.4.3 Defining a Path Dynamically
14.4.4 Modifying Paths and Path Styles
14.5 Properties for Markers and Paths
Chapter 15 Working with TIBCO GeoAnalytics Maps
15.2 Using Expressions for Properties
16.1 Using the Dataset and Query Dialog
16.2 Working with the Query Builder
16.2.1 Query Outline View and Diagram View
16.2.4 Data Selection Criteria (WHERE Conditions)
17.1 Creating the Report Book Framework
17.2 Creating and Adding Reports to the Report Book
17.2.1 Creating a Report for the Report Book
17.2.2 Adding a Report to the Report Book
17.3.1 Sorting on Additional Fields
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17.3.2 Adding Section Introductory Pages
17.4 Configuring the Table of Contents
17.6 Publishing the Report Book
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Jaspersoft Studio is the latest incarnation of the well-known iReport Editor. Because it is built on the Eclipse platform, Jaspersoft Studio is a more complete solution that allows users to extend its capabilities and functionality.
This chapter contains the following sections:
•
Introduction to Jaspersoft Studio
•
•
•
•
Units of Measure in Jaspersoft Studio
•
Exporting Reports with Jaspersoft Studio
1.1
Introduction to Jaspersoft Studio
Jaspersoft® Studio is an Eclipse-based report designer for JasperReports® Library and JasperReports® Server; it's available as an Eclipse plug-in or as a stand-alone application. Jaspersoft® Studio allows you to create sophisticated layouts containing charts, images, subreports, crosstabs, and more. You can access your data through a variety of sources including JDBC, TableModels, JavaBeans, XML, Hibernate, Big Data (such as
Hive), CSV, XML/A, as well as custom sources, then publish your reports as PDF, RTF, XML, XLS, CSV,
HTML, XHTML, text, DOCX, or OpenOffice.
TIBCO JasperReports® Server builds on TIBCO JasperReports® Library as a comprehensive family of Business
Intelligence (BI) products, providing robust static and interactive reporting, report server, and data analysis capabilities. These capabilities are available as either stand-alone products, or as part of an integrated end-to-end
BI suite utilizing common metadata and provide shared services, such as security, a repository, and scheduling.
The server exposes comprehensive public interfaces enabling seamless integration with other applications and the capability to easily add custom functionality.
This section describes functionality that can be restricted by the software license for JasperReports
Server. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
The heart of the TIBCO Jaspersoft® BI Suite is the server, which provides the ability to:
• Easily create new reports based on views designed in an intuitive, web-based, drag and drop Ad Hoc
Editor.
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Efficiently and securely manage many reports.
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Interact with reports, including sorting, changing formatting, entering parameters, and drilling on data.
• Schedule reports for distribution through email and storage in the repository.
• Arrange reports and web content to create appealing, data-rich Jaspersoft® Dashboards that quickly convey business trends.
For business intelligence users, we offer Jaspersoft® OLAP, which runs on the server.
While the Ad Hoc Editor lets users create simple reports, more complex reports can be created outside of the server. You can either use Jaspersoft® Studio or manually write JRXML code to create a report that can be run in the server. We recommend that you use Jaspersoft® Studio unless you have a thorough understanding of the
JasperReports file structure.
You can use the following sources of information to extend your knowledge of JasperReports® Server:
• Our core documentation describes how to install, administer, and use JasperReports® Server. Core documentation is available as PDFs in the doc subdirectory of your JasperReports® Server installation. You can also access PDF and HTML versions of these guides online from the Documentation section of the
Jaspersoft Community website.
• Our Ultimate Guides document advanced features and configuration. They also include best practice recommendations and numerous examples. You can access PDF and HTML versions of these guides online from the Documentation section of the Jaspersoft Community website.
•
Our Online Learning Portal lets you learn at your own pace, and covers topics for developers, system administrators, business users, and data integration users. The Portal is available online from Professional
Services section of our website .
• Our free samples, which are installed with JasperReports® Library, Jaspersoft® Studio, and JasperReports®
Server, are documented online.
JasperReports® Server is a component of both a community project and commercial offerings. Each integrates the standard features such as security, scheduling, a web services interface, and much more for running and sharing reports. Commercial editions provide additional features, including Ad Hoc charts, flash charts, dashboards, Domains, auditing, and a multi-organization architecture for hosting large BI deployments.
1.2
Installing Jaspersoft Studio
Jaspersoft® Studio is available as an Eclipse Rich Client Package (RCP), downloadable from the following location: http://community.jaspersoft.com/project/jaspersoft-studio/releases .
1.2.1
Software Requirements
Jaspersoft Studio requires the Java Runtime Environment (JRE). To compile the report scriptlets, a full distribution of Java is required. The JSS installer includes the required version of Java.
During the JSS download, you must accept the Java license agreement and select the correct operating system.
Jaspersoft Studio supports the following common operating systems:
•
Windows 7/8, 32 or 64 bit
• Linux, 32 or 64 bit
• MacOS X, 64 bit
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1.2.2
Hardware Requirements
Jaspersoft Studio needs a 64-bit or 32-bit processor and at least 500 MB of Hard Disk space. The amount of
RAM needed is dependent upon report complexity. A value of 1 GB dedicated to Jaspersoft Studio is recommended, 2 GB is suggested.
1.2.3
Available Packages
The Eclipse RCP package is available in the following formats for community and commercial versions.
Linux versions:
• TIBCOJaspersoftStudio-x.x.x.final-linux-x86.tgz
• TIBCOJaspersoftStudio-x.x.x.final-linux-x86_64.tgz
Mac:
•
TIBCOJaspersoftStudio-x.x.x.final-mac-x86_64.dmg
Windows:
• TIBCOJaspersoftStudio-x.x.x.final-windows-installer-x86.exe
•
TIBCOJaspersoftStudio-x.x.x.final-windows-installer-x86_64.exe
x.x.x represents the version number of Jaspersoft Studio.
Note that on a 64-bit operating system you can install the 32-bit version of Jaspersoft Studio (although the 64bit is recommended), but you cannot install the 64- bit version of Jaspersoft Studio on a 32-bit operating system.
For community only, unsupported versions for the Eclipse RCP on Windows and Debian are available as a convenience for users who are in a restricted environment and can't download or install an .exe. file:
• TIBCOJaspersoftstudio_x.x.x.final_amd64.deb
•
TIBCOJaspersoftstudio_x.x.x.final_i386.deb
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TIBCOJaspersoftStudio-x.x.x.final.win32.x86_64.zip
• TIBCOJaspersoftStudio-x.x.x.final.win32.x86.zip
The community version is also available as an unsupported Eclipse plug-in, called the Jaspersoft Studio plugin.
You can install it from the Eclipse Marketplace or download using the Eclipse Update Manager. See the following article on the community website for more information about working with the Jaspersoft Studio plugin.
http://community.jaspersoft.com/wiki/contributing-jaspersoft-studio-and-building-sources
1.2.4
Updating Your Workspace to Jaspersoft® Studio 6.2 and Higher
Due to incompatibilities between Eclipse 4.5 and earlier versions of the Jaspersoft® Studio workspace, the workspace format has been updated in Jaspersoft® Studio 6.2. The new workspace format can't be used with
Jaspersoft® Studio 6.1.1 or earlier.
If you are updating to 6.2 or higher from Jaspersoft® Studio 6.1.1 or earlier, you are prompted to choose a new workspace when you launch Jaspersoft® Studio. When you choose a new workspace, a new, empty workspace is created and set as the workspace for your Jaspersoft® Studio instance. This workspace will be used for versions 6.2 and higher. Your previous workspace remains unchanged and can still be used for versions 6.1.1 or earlier.
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To update the reports and data from your earlier version of Jaspersoft® Studio to version 6.2 or higher, you can import some or all of your projects, server connections, data adapters, and project settings into your new workspace.
Importing projects:
1.
(Optional) To import a version of the MyReports project, you must first delete the existing MyReports folder from your current workspace. You can do this, for example, if you have just upgraded to 6.2 or higher and have created a new empty workspace. To delete MyReports in your current workspace, navigate to the workspace location in your file system and delete or move the MyReports directory.
2.
Select File > Import ...
3.
Select Existing Projects into Workspace from the General category.
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Figure 1-1 Selecting projects in Import dialog
4.
Browse to the workspace with you want, click OK, and then click Next.
The Import dialog opens.
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Figure 1-2 Import Projects dialog
5.
To work on a copy without modifying the originals, select Copy projects into workspace.
6.
Click Finish.
The projects you selected are imported into your current workspace.
Your workspace contains server connections, global data adapters, and your Jaspersoft® Studio preferences in addition to your projects. You must import each type separately.
Importing server connections:
1.
Select File > Import ....
2.
Select External JasperReports Server Connections from the Jaspersoft Studio category.
3.
Browse to the workspace with you want, click OK, and then click Next.
The Select the Server Connections dialog opens.
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Figure 1-3 Select the Server Connections dialog
4.
Choose the connections you want.
5.
Click Finish to import the connections.
The selected server connections are imported into your Jaspersoft® Studio instance.
Importing data adapters and settings:
1.
Select File > Import ....
2.
Select External Properties and Data Adapters from the Jaspersoft Studio category.
3.
Browse to the workspace with you want, click OK, and then click Next.
The Select the Data Adapters dialog opens.
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Figure 1-4 Select the Data Adapters dialog
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4.
Choose the data adapters you want. You do not need to import the built-in adapters (One Empty Record and Sample DB).
5.
Click Next.
Figure 1-5 Select the properties dialog
6.
Choose the properties you want and click Finish.
The selected data adapters and properties are imported into your Jaspersoft® Studio instance.
1.2.5
Compatibility Between Versions
When a new version of JasperReports is distributed, some classes usually change. These modified classes typically impact the XML syntax and the
JASPER file structure.
Before JasperReports 1.1.0, this was a serious problem and a major upgrade deterrent, since it required recompiling all the
JRXML files in order to be used with the new library version. Things changed after the release of Version 1.1.0, in which JasperReports assured backwards compatibility, that is, the library is able to understand and execute any JASPER file generated with a previous version of JasperReports.
With JasperReports 3.1, the JRXML syntax moved from a DTD-based definition to XML-based schema. The
XML source declaration syntax now references a schema file, rather than a DTD. Based on what we said previously, this is not a problem since JasperReports assures backwards compatibility. However, many people are used to designing reports with early versions of iReport then generating the reports by compiling
JRXML in
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JasperReports. This was always a risky operation, but it was still valid because the user was not using a new tag in the XML. With the move to an XML schema, the
JRXML output of iReport 3.1.1 and newer can only be compiled with a JasperReports 3.1.0 or later. All versions of Jaspersoft® Studio produce output that is only compatible with later versions of JasperReports® Library.
1.2.6
Accessing the Source Code
The last version of the source code is available from http://community.jaspersoft.com/project/jaspersoftstudio/releases by clicking Browse Source Code, which lets you access the Subversion (SVN) repository
(read only mode) where the most up-to-date version is available. You can download and compile this source code, but since it is a work in progress it might contain new, unreleased features and bugs. All the information necessary to download the Source Code, configure a development environment on the Eclipse IDE, and compile and run the source code are described in the tutorial "Contributing to Jaspersoft Studio and building from sources".
1.3
User Interface
Jaspersoft Studio is offered in two different versions: a stand-alone Rich Client Platform (RCP) product, and an
Eclipse plug-in version. If you have worked with Eclipse, you are likely familiar with the user interface; those familiar with iReport will find that the layout is different in the new designer. Both the stand-alone and plug-in versions have a similar user interface.
shows a preview of the Jaspersoft Studio interface, with the main areas highlighted.
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Figure 1-6 Jaspersoft Studio User Interface
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In Eclipse terminology, the initial layout of the Jaspersoft Studio interface is called a perspective. The default
Jaspersoft Studio perspective contains an editor area and views. Some views appear by themselves, while others are stacked together in tabbed notebooks. You can open and close views and drag them to different positions in the Eclipse workbench.
•
To open a window you have closed, select Window > Open View from the menu. Select the window you want to open from the drop-down list.
•
To reset the interface to the default perspective, select Window > Reset Perspective.
• To save a perspective, select Window > Save Perspective As and enter a name for your perspective.
Some views have additional menus and actions, accessed through icons in the upper right of the menu.
1.3.1
User Interface Components
Jaspersoft Studio has a multi-tab editor, which includes three tabs that allow you to interact with your reports in different ways: Design, Source, and Preview:
• The Design tab is the main one selected when you open a report file and it allows you to graphically create your report.
•
The Source tab contains the JRXML source code for your report.
•
The Preview tab lets you run the report preview after having selected a data source and output format.
You can explore the data using the following views:
• The Repository Explorer view maintains the list of JasperReports Server connections and available data adapters.
•
The Project Explorer view maintains the list of the projects in the current workspace, usually JasperReports
Server project.
• The Outline view shows the complete structure of the report in a tree. When the Design or Source tab is active, clicking an element in the Outline view highlights that element in the editor. The Outline tab is empty when the Preview tab is active.
•
The Properties view lets you view and edit the properties of the element that is currently selected in the report editor or in the Outline view. The properties shown depend on the type of element. For example, the
Properties view for a table shows four tabs: Appearance, Dataset, Table, and Advanced, while the Properties view for a line shows Appearance, Borders, Line, Inheritance, and Advanced. Some properties are read-only, but most are editable. When the root node of a report is selected in Outline view, the Properties view shows the properties for the report.
Unlike many other views, you can open multiple instances of the Properties view at one time and you can pin a selection to a specific Properties view instance. This allows you to view or edit the properties for a specific element while working with other elements in your report, or with another report entirely.
• The Problems view shows a list of problems and errors that can, for example, block the correct compilation of a report.
•
The Report state summary provides statistics on report compilation/filling/execution. Errors are shown here as well.
This comparison table shows the differences in terminology between iReport and Jaspersoft Studio.
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Table 1-1 Comparison of Features in iReport and Jaspersoft Studio iReport
JasperReports Server Repository
Report Inspector
Report Designer
Problems List
Elements palette
Formatting tools
Property sheet
Styles library
--iReport Output window
Jaspersoft Studio
Repository Explorer
Outline view
Report editing area
Problems view
Designer Palette
Available via context menu on the element
Properties view
---
Project Explorer
Report State summary
1.4
Understanding the Design tab
You design a report using the Design tab, which is divided into different horizontal portions named bands.
When the report is joined with the data generating the print, each band is printed multiple times based on its function (and according to the rules that the report designer has set). For instance, the page header is repeated at the beginning of every page, while the detail band is repeated for each record.
1.4.1
The Report Lifecycle
The life cycle of a JasperReport is divided into two phases:
•
Report development – designing and planning the report, creating a JRXML file, and compiling a Jasper file from the JRXML.
• Report execution – loading the Jasper file, filling the report, and exporting the output (a Jasper print object) in a final format.
Jaspersoft Studio is primarily focused on report development, though it is able to preview the result and export it in all the supported formats. Jaspersoft Studio provides support for a wide range of data sources and allows users to create custom data sources, thereby becoming a complete environment for report development and testing.
When you design a report, you specify where the data comes from, how it is positioned on the page, and additional functionality, such as parameters for input controls or complex formulas to perform calculations. The result is a template, similar to a form containing blank space, that is filled with data when the report is executed.
The template is stored in a JRXML file, which is an XML document that contains the definition of the report layout and design.
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Jaspersoft Studio provides a graphical interface for creating JRXML files. The layout is visual, so you can ignore the underlying structure of the JRXML. You can specify the precise page locations of different types of text and data, such as title, footers, detailed records, groups, and summary information. Some portions of a page defined in this way are reused, others stretch to fit the content, and so on. Additional tools let you add charts and subreports, set up an optional query retrieve data out of a data source, and more.
Before executing a report, the JRXML must be compiled in a binary object called a Jasper file. Jasper files are what you need to ship with your application in order to run the reports.
Report execution is performed by passing a Jasper file and a data source to JasperReports. There are many data source types. You can fill a Jasper file from an SQL query, an XML file, a .csv file, an HQL (Hibernate Query
Language) query, a collection of JavaBeans, and others. If you don't have a suitable data source, JasperReports allows you to write your own custom data source. With a Jasper file and a data source, JasperReports is able to generate the final document in the format you want.
Jaspersoft Studio also lets you configure data sources and use them to test your reports. In many cases, datadriven wizards can help you design your reports much quicker. Jaspersoft Studio includes the JasperReports engine itself to let you preview your report output, test, and refine your reports.
1.4.2
Understanding Bands
The Design tab is divided into nine predefined bands to which new groups are added. In addition, Jaspersoft
Studio manages a heading band (group header) and a recapitulation band (group footer) for every group.
A band is as wide as the page width (right and left margins excluded). However, its height, even if it is established during the design phase, can vary during print creation according to the contained elements; it can
“lengthen” toward the bottom of a page in an arbitrary way. This typically occurs when bands contain subreports or text fields that have to adapt to the content vertically. Generally, the height specified by the user should be considered “the minimal height” of the band. Not all bands can be stretched dynamically according to content; in particular the column footer, page footer, and last page footer bands are statically sized.
The sum of all band heights (except for the background) has to always be less than or equal to the page height minus the top and bottom margins.
1.4.3
Band Types
The following table contains brief descriptions of the available bands:
Band Name
Title
Description
The title band is the first visible band. It is created only once and can be printed on a separate page. It is not possible during design to exceed the report page height (top and bottom margins are included). If the title is printed on a separate page, this band height is not included in the calculation of the total sum of all band heights.
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Band Name
Page Header
Column Header The column header band is printed at the beginning of each detail column. Usually labels containing the column names of a tabular report are inserted in this band.
Group Header A report can contains zero or more group bands which permit the collection of detail records in real groups. A group header is always accompanied by a group footer (both can be independently visible or not). Different properties are associated with a group. They determine its behavior from the graphic point of view. It is possible to always force a group header on a new page or in a new column and to print this band on all pages if the bands below it overflow the single page (as a page header, but at group level). It is possible to fix a minimum height required to print a group header: if it exceeds this height, the group header band is printed on a new page (please note that a value too large for this property can create an infinite loop during printing).
Group Footer
Description
The page header band allows you to define a page header. The height specified during the design phase usually does not change during the creation process, except for the insertion of vertically resizable components such as text fields. The page header appears on all printed pages in the position defined during the design phase. Title and summary bands do not include the page header when printed on a separate page.
Column Footer
Page Footer
The group footer band completes a group. Usually it contains fields to view subtotals or separation graphic elements, such as lines.
The column footer band appears on at the end of every column. Its dimension are not resizable at run time (not even if it contains resizable elements such as subreports or text fields with a variable number of text lines).
The page footer band appears on every page where there is a page header. Like the column footer, it is not resizable at run time.
Last Page
Footer
Summary
Background
If you want to make the last page footer different from the other footers, it is possible to use the special last page footer band. If the band height is 0, it is completely ignored, and the layout established for the common page is used for the last page.
The summary band allows you to insert fields containing total calculations, means, or any other information you want to include at the end of the report.
The background enables you to create watermarks and similar effects, such as a frame around the whole page. It can have a maximum height equal to the page height.
1.4.4
Specifying Report Properties
To view or edit report properties, select the report root node in the Outline view. The report properties are shown in the Properties view.
To change the page dimensions of a report, click the Report tab in the Properties view for the report, then click
Edit Page Format. In the Page Format dialog that appears, you can edit the width, height, units, orientation and margins of the report.
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The unit of measurement used by Jaspersoft Studio and JasperReports is the pixel. However, it is possible to specify report dimension using other units of measurement, such as centimeters, millimeters, or inches. Note that because the dimensions management is based on pixels, some rough adjustments can take place when viewing the same data using different units of measurement. The following table shows standard page sizes and their dimensions in pixels.
B1
B2
B3
B4
B5
ARCH_E
A8
A9
A10
B0
A4
A5
A6
A7
A0
A1
A2
A3
Page Type
Letter
Note
Legal
595x842
421x595
297x421
210x297
148x210
105X148
74X105
2836x4008
Dimensions in Pixels
612x792
540x720
612x1008
2380x3368
1684x3368
1190x1684
842x1190
2004x2836
1418x2004
1002x1418
709x1002
501x709
2592x3456
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Page Type
ARCH_D
ARCH_C
ARCH_B
ARCH_A
FLSA
FLSE
HALFLETTER
11X17
LEDGER
Dimensions in Pixels
1728x2593
1296x1728
864x1296
648x864
612x936
612x936
396x612
792x1224
1224x792
By modifying width and height, it is possible to create a report of whatever size you like. Although Jaspersoft enables you to create pixel-perfect reports, the page orientation options, Landscape or Portrait, are there because they are used by certain report exporters. The page margin dimensions are set by means of the four options on the Page Margin tab.
1.4.5
Columns
Pages, one or more of which make up a report, present bands that are independent from the data (such as the title or the page footers) and other bands that are printed only if there are one or more data records to print (such as the group headers and the detail band). These last sections can be divided into vertical columns in order to take advantage of the available space on the page. A column does not concern the record fields, but it does concern the detail band. This means that if you have a record with ten fields and you desire a table view, ten columns are not needed. However, the element must be placed correctly to have a table effect. Ten columns are returned when long records lists (that are horizontally very narrow) are printed.
Next, let's set up columns in a report as an example. Create a new report from File > New > Jasper Report.
Choose as template BlankA4 and name it
ColumnExample
. Use Sample DB - Database JBDC Connection for the data adapter, with the following SQL query: select * from orders
. Fields from the database are discovered. Double-click
SHIPNAME
, to add it to the report field and click Next twice. Finally, click Finish.
From the outline view drag the
SHIPNAME field in the report in the detail band, resize the detail band, and remove the unused bands. Go to the Preview tab to see the compiled report.
By default the number of columns is 1, and its width is equal to the entire page, except the margins. The space between columns is zero by default. Most of the page is unused. If multiple columns are used, this report would look better. On the Page Format dialog set the number of columns to two and compile the report to see the changes.
Jaspersoft Studio automatically calculates maximum column width according to the margins and the page width.
If you want to increase the space between the columns, increase the value of the Space field.
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The restricted area is used to mark every column after the first, to show that all the elements should be placed in the first column; the other columns are replicated automatically during compilation. If you want you can also put elements in the other columns, but in most cases you need only the first. It is not recommended that you use parts of the report as margins and columns after the first, if they have to be considered as though they were a continuation of the first.
Multiple columns are commonly used for print-outs of very long lists (for example, a phone directory). It is important to remember that when you have more than one column, the width of the detail band and of linked bands is reduced to the width of the columns.
The sum of the margins, column widths, and space between columns has to be less than or equal to the page width. If this condition is not met, the compilation results in an error.
1.4.6
Advanced Options
From the Properties tab of the report there are many other options for the report configuration. Select the report root node from the outline view, and in the Properties tab you see:
• Report Name: It is a logical name, independent from the source file's name, and is used only by the
JasperReports library (for example, to name the produced Java file when a report is compiled).
• Title on a new page: This option specifies that the title band is to be printed on a new page, which forces a page break at the end of the title band. In the first page only the title band is printed. However this page is still included in total page count.
• Summary on a new page: This option is similar to Title on a new page except that the summary band is printed as the last page. If you need to print this band on a new page, the new page only contains the summary band.
• Summary with page header and footer: This option specifies if the summary band is to be accompanied by the page header and the page footer.
• Floating column footer: This option forces the printing of the column footer band immediately after the last detail band (or group footer) rather than the end of the column. This option is used, for example, when you want to create tables using the report elements.
• When no data type: When an empty data is supplied as the print number (or the SQL associated with the report returns no records), an empty file is created (or a stream of zero bytes is returned). This default behavior can be modified by specifying what to do in the case of absence of data. The possible values for this field are:
• No Pages: This is the default value; the final result is an empty buffer.
• Blank Page: This returns an empty page.
• All Sections No Detail: This returns a page containing all bands except for the detail band.
1.5
Units of Measure in Jaspersoft Studio
Jaspersoft Studio can handle many units of measure, including pixels, centimeters, millimeters and inches. To accomplish this, we included a measure component in Jaspersoft Studio. This component looks like a standard text box with a place to enter a measure unit to the right of the value.
This component can handle a different measure unit for each field, if needed.
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1.5.1
Configuration
You can set two preferred (default) units of measure, one at the field level, the other at the report level. The report level unit is used wherever there is not a preferred field unit of measure. The report's default unit of measure is the pixel.
To change the report level unit:
1.
Select Window > Preferences to open the Preferences window.
2.
Expand Jaspersoft Studio and select Report Designer.
3.
Use the Default Unit drop-down menu to select one of the following units of measure:
• Pixels
•
Inches
•
Millimeters
• Centimeters
• Meters
1.5.2
Changing the Field Unit of Measure
To change a field's local unit of measure select the field, double-click the unit of measure in the Properties view, and select a supported unit from the pop-up menu:
Figure 1-7 Updating a field's measure unit
1.5.3
Alias and Auto-complete
Jaspersoft Studio has included alias and auto-complete services for units of measure. The following table shows your options.
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Unit
centimeter millimeter meter pixel inch
Accepted Values
centimeter, centimeters, cm millimeter, millimeters, mm meter, meters, m pixel, pixels, px inch, inches, " (double quote)
Enter a value and begin typing a unit of measure. Auto-complete will list the matching supported values for you to choose from.
1.5.4
Approximations
Even through Jaspersoft Studio handles many units of measure, JasperReports works only with pixels. So pixels are the only unit allowed in the project file. Jaspersoft Studio approximates measurements and converts them to pixels. For example, 5 cm is converted to the nearest whole-number value in pixels. In this case the 5 centimeters is converted to 139 pixels (approximately 4.97 cm).
1.6
Exporting Reports with Jaspersoft Studio
In addition to generating and viewing reports, Jaspersoft Studio allows you to export reports into many formats, including PDF, XLS, HTML and others.
1.6.1
Compiling the Report
When you select the Preview tab in the designer bottom bar, Jaspersoft Studio performs a set of operations to create the final report. The first operation compiles the JRXML source file in a Jasper file. This first step can fail if the elements are not correctly positioned (for example, if an element is placed outside of a band), or if an expression in the report has errors and cannot be compiled.
If the compilation runs successfully, the produced Jasper file is loaded and filled using the active connection or data source. This second operation can also lead to errors. This can happen if the referenced database is not active, an invalid query has been provided, or a null field produced an error in an expression during the filling process. If all operations complete without error, the report is displayed in the integrated viewer. Errors are shown in the Report State window, after clicking the Errors button.
If errors occur during the compilation, the tab focus changes from Preview to Design.
1.6.2
Preview and Exporting
If the compilation completes and there are no errors in the file, the preview is shown. From there you can browse the generated report and change its visualization, change the data source or export the report. Note that after changing the data source the report is recompiled automatically. You can also change the preview format as well as save the report in different formats.
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When you set a preview format, the report is automatically regenerated in the chosen format, and the corresponding viewer application is opened.
1.6.3
Choosing Report Templates for PDF
If you are exporting your report to PDF, choose a report template based on the size of the output.
•
For most PDF exports, you can use Actual Size, which supports a maximum size of 14400px by 14400px.
•
For reports with an output height exceeding 14400 px, use a paginated report template that is wide enough for your report. For example, if you have a long report with width less than 842px, you can use the paginated A4 Landscape theme. A report designer can create additional custom templates in Jaspersoft
Studio.
•
Reports with output width exceeding 14400 px will be truncated in PDF.
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C
HAPTER
2 C
ONCEPTS OF
J
ASPER
R
EPORTS
This chapter illustrates JasperReports' base concepts for a better understanding of how Jaspersoft Studio works.
The JasperReports API, the XML syntax for report definition, and details for using the library in your own programs are documented in the JasperReports® Library Ultimate Guide. This guide, along with other information and examples, is directly available on the Jaspersoft community site at http://community.jaspersoft.com
.
JasperReports is published under the LGPL license, which is a less restrictive GPL license. JasperReports can be freely used on commercial programs without buying expensive software licenses and without remaining trapped in the complicated net of open source licenses. This is important when reports created with Jaspersoft Studio are used in a commercial product; in fact, programs only need the JasperReports library to produce prints, which work something like run time executables.
This chapter contains the following sections:
•
JRXML Sources and Jasper Files
•
Data Sources and Print Formats
•
•
Using Java as a Language for Expressions
•
Using Groovy as a Language for Expressions
•
Using JavaScript as a Language for Expressions
•
2.1
JRXML Sources and Jasper Files
JasperReports defines a report with an XML file. A
JRXML file is composed of a set of sections; some concerned with the report’s physical characteristics (such as the dimensions of the page, positioning of the fields, and height of the bands), and some concerned with the logical characteristics (such as the declaration of the parameters and variables and the definition of a query for data selection).
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The following table shows sample report source code.
Table 2-1 A simple JRMXL file example
<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="My first report" pageWidth="595" pageHeight="842" columnWidth="535" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
<queryString language="SQL">
<![CDATA[select * from address order by city]]>
</queryString>
<field name="ID" class="java.lang.Integer">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<field name="FIRSTNAME" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<field name="LASTNAME" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<field name="STREET" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<field name="CITY" class="java.lang.String">
<fieldDescription><![CDATA[]]></fieldDescription>
</field>
<group name="CITY">
<groupExpression><![CDATA[$F{CITY}]]></groupExpression>
<groupHeader>
<band height="27">
<staticText>
<reportElement mode="Opaque" x="0" y="0" width="139" height="27" forecolor="#FFFFFF" backcolor="#000000"/>
<textElement>
<font size="18"/>
</textElement>
<text><![CDATA[CITY]]></text>
</staticText>
<textField hyperlinkType="None">
<reportElement mode="Opaque" x="139" y="0" width="416" height="27" forecolor="#FFFFFF" backcolor="#000000"/>
<textElement>
<font size="18" isBold="true"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$F{CITY}]]>
</textFieldExpression>
</textField>
</band>
</groupHeader>
<groupFooter>
<band height="8">
<line direction="BottomUp">
<reportElement key="line" x="1" y="4" width="554" height="1"/>
</line>
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</band>
</groupFooter>
</group>
<background>
<band/>
</background>
<title>
<band height="58">
<line>
<reportElement x="0" y="8" width="555" height="1"/>
</line>
<line>
<reportElement positionType="FixRelativeToBottom" x="0" y="51" width="555" height="1"/>
</line>
<staticText>
<reportElement x=”65” y=”13” width ”424” height=”35”/>
<textElement textAlignment=”Center”>
<font size=”26” isBold=”true”/>
</textElement>
<text><![CDATA[Classic template]]> </text>
</staticText>
</band>
</title>
<pageHeader>
<band/>
</pageHeader>
<columnHeader>
<band height="18">
<staticText>
<reportElement mode="Opaque" x="0" y="0" width="138" height="18" forecolor="#FFFFFF" backcolor="#999999"/>
<textElement>
<font size="12"/>
</textElement>
<text><![CDATA[ID]]></text>
</staticText>
<staticText>
<reportElement mode="Opaque" x="138" y="0" width="138" height="18" forecolor="#FFFFFF" backcolor="#999999"/>
<textElement>
<font size="12"/>
</textElement>
<text><![CDATA[FIRSTNAME]]></text>
</staticText>
<staticText>
<reportElement mode="Opaque" x="276" y="0" width="138" height="18" forecolor="#FFFFFF" backcolor="#999999"/>
<textElement>
<font size="12"/>
</textElement>
<text><![CDATA[LASTNAME]]></text>
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</staticText>
<staticText>
<reportElement mode="Opaque" x="414" y="0" width="138" height="18" forecolor="#FFFFFF" backcolor="#999999"/>
<textElement>
<font size="12"/>
</textElement>
<text><![CDATA[STREET]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20">
<textField hyperlinkType="None">
<reportElement x="0" y="0" width="138" height="20"/>
<textElement>
<font size="12"/>
</textElement>
<textFieldExpression class="java.lang.Integer"><![CDATA[$F{ID}]]>
</textFieldExpression>
</textField>
<textField hyperlinkType="None">
<reportElement x="138" y="0" width="138" height="20"/>
</textField>
<textElement>
<font size="12"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$F{FIRSTNAME}]]>
</textFieldExpression>
<textField hyperlinkType="None">
<reportElement x="276" y="0" width="138" height="20"/>
<textElement>
<font size="12"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$F{LASTNAME}]]>
</textFieldExpression>
</textField>
<textField hyperlinkType="None">
<reportElement x="414" y="0" width="138" height="20"/>
<textElement>
<font size="12"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$F{STREET}]]>
</textFieldExpression>
</textField>
</band>
</detail>
<columnFooter>
<band/>
</columnFooter>
<pageFooter>
<band height="26">
<textField evaluationTime="Report" pattern="" isBlankWhenNull="false" hyperlinkType="None">
<reportElement key="textField" x="516" y="6" width="36" height="19" forecolor="#000000" backcolor="#FFFFFF"/>
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<textElement>
<font size="10"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA["" +
$V{PAGE_NUMBER}]]></textFieldExpression>
</textField>
<textField pattern="" isBlankWhenNull="false" hyperlinkType="None">
<reportElement key="textField" x="342" y="6" width="170" height="19" forecolor="#000000" backcolor="#FFFFFF"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Right">
<font size="10"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA["Page " +
$V{PAGE_NUMBER} + " of "]]></textFieldExpression>
</textField>
<textField pattern="" isBlankWhenNull="false" hyperlinkType="None">
<reportElement key="textField" x="1" y="6" width="209" height="19" forecolor="#000000" backcolor="#FFFFFF"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement>
<font size="10"/>
</textElement>
<textFieldExpression class="java.util.Date"><![CDATA[new Date()]]>
</textFieldExpression>
</textField>
</band>
</pageFooter>
<summary>
<band/>
</summary>
</jasperReport>
During compilation of the JRXML file (using some JasperReports classes) the XML is parsed and loaded in a
JasperDesign object, which is a rich data structure that allows you to represent the exact XML contents in memory. Regardless of the language used for expressions inside the
JRXML
, JasperReports creates a special Java class that represents the whole report. The report is then compiled, instanced, and serialized in a
JASPER file, ready for loading at any time.
JasperReports' speedy operation is due to all of a report’s formulas being compiled into Java-native bytecode and the report structure being verified during compilation instead of at run time. The JASPER file contains no extraneous resources, such as images used in the report, resource bundles to run the report in different languages, or extra scriptlets and external style definitions. All these resources must be provided by the host application and located at run time.
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2.2
Data Sources and Print Formats
Without a means of supplying content from a dynamic data source, even the most sophisticated and appealing report would be useless. JasperReports gives you two ways to specify fill data for the output report: parameters and data sources. Both kinds of data are presented by means of a generic interface named
JRDataSource
.
Figure 2-1 Data Source and Parameter Flows for Report Creation
JRDataSource allows a set of records organized in tables (rows and columns) to be read. It enables
JasperReports to fill a report with data from an explicit data source, using a JDBC connection (already instanced and opened) to whichever relational database you want to run an SQL query on (which is specified in the report).
If the data don't meet your requirements, you may need to specify values to condition the report’s execution; you can create name/value pairs to pass to the print engine. These pairs are named parameters, and they have to be preventatively declared in the report. Through fillManager
, you can join a
JASPER file and a data source in a JasperPrint object. This object is a meta-print that can create a real print after you export it in the format of your choice through appropriate classes that implement the
JRExporter interface.
JasperReports give you pre-defined exporters, such as those for creating files formatted as
,
XLS
, CVS,
XML, RTF, ODF, text, HTML and SWF. Through the
JRViewer class, you can view the print directly on the screen and print a hard copy.
2.3
Expressions
Many settings in a report are defined by formulas, such as conditions that can hide an element, special calculations, or text processing that requires knowledge of a scripting language.
Formulas can be written in at least three languages, two of which (JavaScript and Groovy) can be used without knowledge of programming methods.
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All formulas in JasperReports are defined through expressions. The default expression language is Java, but if you're not a programmer, we recommend JavaScript or Groovy, because those languages hide a lot of the Java complexity. The language is a property of the document. To set it, select the document root node in the Outline view and choose your language in the
Language property in the Properties view.
An expression is a formula that operates on some values and returns a result, like a formula in a spreadsheet cell.
A cell can have a simple value or a complex formula that refers to other values. In a spreadsheet you refer to values contained in other cells; in JasperReports you use the report fields, parameters, and variables. Whatever is in your expression, when it's computed, it returns a value (which can be null).
2.3.1
Expression Types
An expression's type is determined by the context in which the expression is used. For example, if your expression is used to evaluate a condition, the expression should be Boolean (true or false); if you're creating an expression to display in a text field, it's probably a String or a number (Integer or Double). Using the right type is crucial; JasperReports requires precision when choosing an expression type.
Some of the most important Java types are: java.lang.Boolean
java.lang.Byte
java.lang.Short
java.lang.Integer
java.lang.Long
java.lang.Float
java.lang.Double
Defines an Object that represents a Boolean value such as true and false
Defines an Object that represents a byte
Defines an Object that represents an short integer
Defines an Object that represents integer numbers
Defines an Object that represents long integer numbers
Defines an Object that represents floating point numbers
Defines an Object that represents real numbers java.lang.String
java.util.Date
Defines an Object that represents a text
Defines an Object that represents a date or a timestamp java.lang.Object
A generic java Object
If an expression is used to determine the value of a condition that determines, for instance, whether an element should be printed, the return type is java.lang.Boolean
. To create it, you need an expression that returns an instance of a Boolean object. Similarly, if an expression shows a number in a text field, the return type is java.lang.Integer
or java.lang.Double
.
Neither JavaScript nor Groovy is particularly formal about types, since they are not typed languages; the language itself treats a value in the best way by trying to guess the value type or by performing implicit casts
(conversion of the type).
2.3.2
Expression Operators and Object Methods
Operators in Java, Groovy and JavaScript are similar because these languages share the same basic syntax.
Operators can be applied to a single operand (unary operators) or on two operands (binary operators). The
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%
||
&&
==
-
/
Operator
+
!=
!
following table shows a number of operators, but it is not a complete list. For example, there is a unary operator to add 1 to a variable (++), but it is easier to use x + 1.
Table 2-2 Expression operators
Description
Sum (it can be used to sum two numbers or to concatenate two strings)
Subtraction
Division
Rest, it returns the rest of an integer division
Boolean operator OR
Boolean operator AND
Equals
Not equals
Boolean operator NOT
Example
A + B
A - B
A / B
A % B
A || B
A && B
A == B
A != B
!A
Regarding the Equals operator: in Java, the == operator can only be used to compare two primitive values. With objects, you need to use the special method “equals”; for example, you cannot write an expression like "test" == "test", you need to write "test".equals("test").
Regarding the Equals operator: in Java, the != operator can only be used to compare two primitive values.
Within an expression, you can use the syntax summarized in
Table 2-3, “Syntax for referring to report objects,” on page 36
to refer to the parameters, variables, and fields defined in the report.
Table 2-3 Syntax for referring to report objects
Syntax
$F{name_field}
$V{name_variable}
$P{name_parameter}
Description
Specifies the name_field field ("F" means field).
Specifies the name_variable variable.
Specifies the name_parameter parameter.
$P!{name_parameter}
Special syntax used in the report SQL query to indicate that the parameter does not have to be dealt as a value to transfer to a prepared statement, but that it represents a little piece of the query.
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Syntax
$R{resource_key}
$X{functionName, col_name, param1,
[param2]}
Description
Special syntax for localization of strings.
Syntax for complex queries, such as comparing a column value to a parameter value. Based on the function in the first argument, JasperReports constructs a SQL clause. The following functions are available:
• Functions expecting three arguments for $X{} – EQUAL, NOTEQUAL, LESS,
LESS]
(less than or equal to), GREATER, [GREATER (greater than or equal to),
IN
, NOTIN. For example:
$X{EQUAL, order_date, date_parameter}
• Functions expecting four arguments for $X{} –
BETWEEN
(excludes both endpoints)
BETWEEN]
(includes right endpoint)
[BETWEEN
(includes left endpoint)
[BETWEEN]
(includes both endpoints)
For example:
$X{BETWEEN, order_date, start_date_param, end_date_param}
In summary, fields, variables and parameters represent objects; specify their type when you declare them within a report.
Although expressions can be complicated, usually it is a simple operation that returns a value. There is a simple if-else expression that is very useful in many situations. An expression is just an arbitrary operation that any stage must represent a value. In Java, these operators can be applied only to primitive values, except for the sum operator (+). The sum operator can be applied to a String expression with the special meaning of concatenate.
For example:
$F{city} + “, ” + $F{state} results in a string like:
San Francisco, California
Any object in an expression can include methods. A method can accept zero or more arguments, and it can return or not a value. In an expression you can use only methods that return a value; otherwise, you would have nothing to return from your expression. The syntax of a method call is:
Object.method(argument1, argument2, <etc.>)
Some examples:
Expression
“test”.length()
“test”.substring(0, 3)
“test”.startsWith(“A”)
“test”.substring(1, 2).startsWith(“e”)
Result
4
“tes” false true
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The methods of each object are usually explained in the JasperReports® Library Javadocs, which that are available at http://jasperreports.sourceforge.net/api/ .
You can use parentheses to isolate expressions and make the overall expression more readable.
2.3.3
Using an If-Else Construct in an Expression
A way to create an if-else-like expression is by using the special question mark operator. For example:
(($F{name}.length() > 50) ? $F{name}.substring(0,50) : $F{name})
The syntax is
(<condition>) ? <value on true> : <value on false>
. It is extremely useful, and can be recursive, meaning that the value on true and false can be represented by another expression which can be a new condition:
(($F{name}.length() > 50) ?
(($F{name}.startsWidth(“A”)) ? “AAAA” : “BBB”)
:
$F{name})
This expression returns the String
AAAA when the value of the field name is longer than 50 characters and starts with A, returns BBB if it is longer than 50 characters but does not start with A, and, finally, returns the original field value if neither of these conditions is true.
Despite the possible complexity of an expression, it can be insufficient to define a needed value. For example, if you want to print a number in Roman numerals or return the name of the weekday of a date, it is possible to transfer the elaborations to an external Java class method, which must be declared as static, as shown in the following example:
MyFormatter.toRomanNumber( $F{MyInteger}.intValue() )
The function operand toRomanNumber is a static method of the
MyFormatter class, which takes an int as argument (the conversion from Integer to int is done by means of the intValue() method; it is required only when using Java as language) and gives back the Roman version of a number in a lace.
This technique can be used for many purposes; for example, to read the text from a CLOB field or to add a value into a
HashMap
(a Java object that represents a set of key/value pairs).
2.4
Using Java as a Language for Expressions
Java was the first language supported by JasperReports and is still the most commonly-used language as well as being the default.
Following are some examples of Java expressions:
•
“This is an expression”
• new Boolean(true)
• new Integer(3)
•
(($P{MyParam}.equals("S")) ? "Yes" : "No")
The first thing to note is that each of these expressions represents a Java Object, meaning that the result of each expression is a non-primitive value. The difference between an object and a primitive value makes sense only in
Java, but it is very important: a primitive value is a pure value like the number 5 or the Boolean value true.
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Operations between primitive values have as a result a new primitive value, so the expression:
5+5 results in the primitive value 10. Objects are complex types that can have methods, can be null, and must be
“instanced” with the keyword “new” most of the time. In the second example above, for instance ( new Boolean
(true)
), we must wrap the primitive value true in an object that represents it.
By contrast, in a scripting language such as Groovy and JavaScript, primitive values are automatically wrapped into objects, so the distinction between primitive values and objects wanes. When using Java, the result of our expression must be an object, which is why the expression 5+5 is not legal as-is but must be fixed with something like this: new Integer( 5 + 5 )
The fix creates a new object of type
Integer representing the primitive value 10.
So, if you use Java as the default language for your expressions, remember that expressions like the following are not valid:
•
3 + 2 * 5
• true
•
(($P{MyParam} == 1) ? "Yes" : "No")
These expressions don’t make the correct use of objects. In particular, the first and the second expressions are not valid because they are of primitive types ( integer in the first case and boolean in the second case) which do not produce an object as a result. The third expression is not valid because it assumes that the
MyParam parameter is a primitive type and that it can be compared through the == operator with an int
, but it cannot. In fact, we said that parameters, variables, and fields are always objects and primitive values cannot be compared or used directly in a mathematical expression with an object.
2.5
Using Groovy as a Language for Expressions
The modular architecture of JasperReports provides a way to plug in support for languages other than Java. By default, the library supports bsh, Groovy and JavaScript.
Groovy is a full language for the Java 2 Platform. Inside the Groovy language you can use all classes and JARs that are available for Java. The following table compares some typical JasperReports expressions written in Java and Groovy:
Table 2-4 Groovy and Java code samples
Expression
Field
Sum of two double fields
Comparison of numbers
Comparison of strings
Java
$F{field_name}
Groovy
$F{field_name} new Double($F{f1}.doubleValue() + $F{f2}.doubleValue()) $F{f1} + $F
{f2} new Boolean($F{f}.intValue() == 1) $F{f} == 1 new Boolean($F{f} != null && $F{f}.equals("test")) $F{f} ==
"test"
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The following is a correct Groovy expression: new JREmptyDataSource($F{num_of_void_records})
JREmptyDataSource is a class of JasperReports that creates an empty record set (meaning with the all fields set to null). You can see how you can instance this class (a pure Java class) in Groovy without any problem. At the same time, Groovy allows you to use a simple expression like this one:
5+5
The language automatically encapsulates the primitive value 10 (the result of that expression) in a proper object.
Actually, you can do more: you can treat this value as an object of type
String and create an expression such as:
5 + 5+ ”my value”
Whether or not such an expression resolves to a rational value, it is still a legal expression and the result is an object of type
String with the value:
10 my value
Hiding the difference between objects and primitive values, Groovy allows the comparison of different types of objects and primitive values, such as the legal expression:
$F{Name} == “John”
This expression returns true or false, or, again:
$F{Age} > 18
“340” < 100
Returns true if the
Age object interpreted as a number is greater than 18.
Always returns false.
“340”.substring(0,2) < 100
Always returns true (since the substring method call produces the string “34”, which is less than 100).
Groovy provides a way to greatly simplify expressions and never complains about null objects that can crash a
Java expression throwing a
NullPointerException
. It really does open the doors of JasperReports to people who don’t know Java.
2.6
Using JavaScript as a Language for Expressions
JavaScript is a popular scripting language with a syntax very similar to Java and Groovy. JavaScript has a set of functions and object methods that in some cases differ from Java and Groovy. For example, the method
String.startsWith(...) does not exist in JavaScript. You can still use Java objects in JavaScript. An example is:
(new java.lang.String("test")).startsWith("t")
This is a valid JavaScript expression creating a Java object (in this case a java.lang.String
) and using its methods.
JavaScript is the best choice for users who have no knowledge of other languages. The other significant advantage of JavaScript is that it is not interpreted at run time, but instead generates pure Java byte-code. As a result, it offers almost the same performance as Java itself.
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2.7
Using JasperReports Extensions in Jaspersoft Studio
JasperReports provides several ways to extend its functionality. In general, extensions (like components, fonts, query executors, chart themes, and so on) are packaged in JARs. To use these extensions in Jaspersoft Studio, just add the required JARs to the Jaspersoft Studio classpath. The Jaspersoft Studio classpath is composed of static and reloadable paths. Extensions must be set as static paths, while objects that don’t require a proper descriptor or special loading mechanism (such as scriptlets and custom data sources) can be reloadable.
2.8
A Simple Program
In conclusion, following is an example of a simple program that shows how to produce a PDF file from a Jasper file using a data source named
JREmptyDataSource
, a utility data source that provides zero or more records without fields. The file test.jasper, referenced in the example, is the compiled version of the code in
Table 2-5 JasperTest.java
import net.sf.jasperreports.engine.*; import net.sf.jasperreports.engine.export.*; import java.util.*; public class JasperTest
{ public static void main(String[] args)
{
String fileName = "/devel/examples/test.jasper";
String outFileName = "/devel/examples/test.pdf";
HashMap hm = new HashMap(); try
{
JasperPrint print = JasperFillManager.fillReport( fileName, hm, new JREmptyDataSource());
JRExporter exporter = new net.sf.jasperreports.engine.export.JRPdfExporter(); exporter.setParameter(
JRExporterParameter.OUTPUT_FILE_NAME, outFileName); exporter.setParameter(
JRExporterParameter.JASPER_PRINT,print); exporter.exportReport();
System.out.println("Created file: " + outFileName);
} catch (JRException e)
{ e.printStackTrace();
System.exit(1);
} catch (Exception e)
{ e.printStackTrace();
System.exit(1);
}
}
}
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C
HAPTER
3 R
EPORT
E
LEMENTS
The basic building block of a report is the element. An element is a graphical object, such as a text string or a rectangle. In Jaspersoft Studio, the concept of line or paragraph does not exist, as it does in word processing programs. Everything is created by means of elements, which can contain text, create tables, display images, and so on. This approach follows the model used by the majority of report authoring tools.
Jaspersoft Studio relies on all the basic elements provided in the JasperReports library:
• Line
• Rectangle
•
Ellipse
•
Static text
• Text field (or simply Field)
• Image
•
Frame
•
Subreport
• Crosstab
• Chart
•
Break
Combining these elements, you can produce every kind of report. JasperReports also allows developers to implement their own generic elements and custom components for which they can add support in Jaspersoft
Studio to create a proper plug-in.
This chapter contains the following sections:
•
•
Inserting, Selecting, and Positioning Elements
•
•
•
•
•
Working with Composite Elements
•
Anchors, Bookmarks, and Hyperlinks
•
•
•
Custom Visualization Component
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3.1
Common Element Properties
All elements have a set of common properties. Other properties are specific to element type. An element's properties determine its appearance and position on the page. You can access the properties of a selected element in the Properties view (by default in the upper right area of the UI). In Jaspersoft Studio you place elements within bands (containers). Depending on the elements it contains, you can change the vertical size of a band.
3.1.1
The Palette
Elements appear in the Palette, located by default in the top right of the UI.
Figure 3-1 Elements in the Palette
The palette contains three subpalettes:
•
Basic Elements contains the elements and components available in all editions of Jaspersoft® Studio.
• Composite Elements contains elements created as combinations of other elements, such as Page Number and
Time. You can add your own composite elements to any palette.
•
Components Pro contains elements only available in commercial versions of Jaspersoft® Studio. This subpalette is not visible in the community edition.
3.1.2
Element Properties
Element properties are divided into categories, visible via tabs in the Properties view. The attributes available depend on the element type.
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Figure 3-2 Properties view for a rectangle
•
The Appearance tab allows you to set the location, size, color, and text style of the element.
• The Borders tab allows you to set the padding and border style, color, and width of the element.
• An element tab allows you to set evaluation time along with properties specific to the element type. For example:
• The Static Text tab allows you to define unchangeable text for a field, and control its appearance.
• The Text Field tab allows you to format and position a textfield element.
•
The Image tab allows you to set image alignment, fill, and scale properties.
Some elements have more than one element-specific tab. For example, the Chart component has the Chart and Chart Plot tabs, and the Map component has the Map, Authentication, Markers, and Paths tabs.
• The Inheritance tab allows you to view any attributes inherited from another level, and override those attributes when possible.
•
The Hyperlink tab, available for image, textfield, and chart elements, allows you to define a hyperlink in an element.
•
The Advanced tab displays detailed information about the element.
Frequently, the value of an attribute is undefined, and it has a common default value. This means that the element does not have a specific behavior defined, but gets a behavior from somewhere else. For example, the default value of the attribute "background color" is undefined in most of cases, but when a non-transparent element is added to a report in the design tab, you can see that it has a white background. The value of the background color attribute is inherited from a lower level.
3.2
Inserting, Selecting, and Positioning Elements
3.2.1
Inserting Elements
When you insert an element, you can let Jaspersoft® Studio autosize it, or you can size it as you insert it.
Setting the size of an element when you insert it is useful for tabular elements such as tables and crosstabs.
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To let Jaspersoft® Studio autosize an element:
• Drag an element from the palette to place it in the report editing area.
To size an element at insertion time:
•
Click on the element in the palette. The cursor changes to show that it an element is selected. Click and drag in the report editing area to size and place the element. If you insert a crosstab or table using click and drag, the columns fill the whole crosstab or table.
3.2.2
Selecting Elements
Click to select an element in the report editing area. Drag to adjust the element's position or change its size by selecting it and dragging a corner of the selection frame. To select several elements at the same time draw a rectangle around them; shift-clicking works as well.
When two or more elements are selected, only their common properties are displayed in the Properties view. If the values of the properties are different, the value fields are blank (usually the field is shown empty). To edit properties unique to one element, select only that element.
3.2.3
Positioning Elements
Jaspersoft Studio offers a number of ways to place the elements in your report with precision.
3.2.3.1 Using the Grid
To show a grid for aligning elements in the page, go to View > Show Grid from the main menu. To force the elements to snap to the grid, also select Snap to Grid.
3.2.3.2 Using Bands
The top and left values that define the element’s position are always relative to the parent container (a band or frame).
If you want to move an element from one band to another or to a frame, drag the element node from the Outline view to the new band (or frame) node.
In the report editing area, you can drag an element from one band to another band, but the element’s parent band does not change. In general, an element must stay in its band, but there are exceptions to this rule. For example, you can move an element anywhere in the report without changing or updating the parent band.
3.2.3.3 Guides
When dragging or resizing an element, Jaspersoft Studio suggests places to align it based on the elements currently in the Design tab, the band bounds, and any guides. When the element you're moving or resizing is in line with another element in the report, a guideline appears, allowing you align the elements. To force elements to align with guidelines, select View > Snap to Guides from the main menu.
You can drag and change the position of a guideline at any time with no effect on the element’s position.
To remove a guideline, drag it to the upper-left corner of the report editing area.
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3.2.3.4 The Properties View
You can use the Properties view to edit an element’s properties. By default the Properties view is at the right side of the UI. The Properties view is for more than just elements. You'll use it to edit all the components of a report. When you select something in the designer or the Outline view, the Properties view shows the options specific to that object.
3.2.4
Positioning Elements in Containers
Some elements that can contain many other elements are called containers. Containers include bands, frames, table cells, and crosstab cells. The following tools help you position items inside containers:
• Sizing tools – Let you size an element to fit the height, width, or entire container.
• Container layouts – Let you set how elements are automatically arranged in a container.
Elements inside containers must obey the following rules.
•
Elements in table cell, and crosstab cells must be fully contained by the parent in the design time.
Otherwise, an error will occur at compilation time.
• Elements in bands can extend horizontally past the document margins and/or overflow the top of the band.
Otherwise, an error will occur at compilation time.
•
Frames are able to adapt their size to content.
3.2.4.1 Container Layouts
A container layout is a design-time tool that adjusts the size and the position of elements when they are added to or removed from a container. The concept of layout is specific to Jaspersoft® Studio and works only at design time. Layouts don't make a report stretchable or resizable. At run-time, depending on the design,
JasperReports® Library may still let elements overlap or change their position relative to other elements.
There are four container layouts:
• Free layout (default)
•
Horizontal layout
•
Vertical layout
• Grid layout
To choose a layout:
•
Right-click in the container select Arrange in Container from the menu, then select the layout you want.
or
• Click on the container and then select the option you want from the Layouts menu on the Appearance tab of the Properties view. This is the only way to return to Free Layout after you have selected a different layout.
3.2.4.2 Working with Grid Layout
Grid layout positions elements in a container in a grid of rows and columns. By setting properties on individual elements, you can control the element's placement in the grid, as well as influence the overall height of the rows and width of the columns. Elements can span multiple rows and/or columns. If you resize the container during design, the elements are resized based on their properties.
When grid layout is selected for a container, such as a band, elements inside the container have a Layout section on the Appearance tab of the Properties dialog. The following table shows the properties you can set on a element in a container with grid layout. The property name to use in source view is included in the description.
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Property
Row
Number
Column
Number
Row
Span
Column
Span
Fixed
Size
Row
Weight
Column
Weight
Value
Relative (default) or an integer between 0 and
1000
Relative (default) or an integer between 0 and
250
Integer between 0 and
1000; default = 1
Integer between 0 and
250; default = 1
Boolean; default = false.
Number; default = 1
Number; default = 1
Description
Number of the row from which this element starts. 0 is the first row.
When set to Relative, increments the last evaluated row by 1.
com.jaspersoft.layout.grid.y
Number of the column from which this element starts. 0 is the first column. When set to Relative, increments the last evaluated column by 1.
com.jaspersoft.layout.grid.x
Number of rows that the element spans.
com.jaspersoft.layout.grid.colspan
Number of columns that the element spans com.jaspersoft.layout.grid.rowspan
Set to true to manually size the element. Set to false to have the element size automatically using the element's settings com.jaspersoft.layout.grid.fixed
Number that specifies how much space the element's row takes relative to other rows. Not available when Fixed Size is True.
com.jaspersoft.layout.grid.weight.x
Number that specifies how much space the element's column takes relative to other rows. Not available when Fixed Size is True.
com.jaspersoft.layout.grid.weight.y
To use grid layout:
1.
This example uses a vertical image, that is, an image much taller than it is wide. You can use any vertical image, for example, a company logo rotated vertically. To create the exact image used in this example, create a report with the Green Leaf template. This creates a leaf_banner_green.png file in your workspace.
In your file system, use a graphics editor to rotate the image 90°. Note that this will rotate the image in any report where it is used.
2.
Create a report using the BlankA4 template and the Empty data source. Do not reuse the report created in the previous step.
3.
Add your vertical image to the title band of your report.
4.
Add a chart to the title band of your report, to the right of your image.
5.
Resize the title band to fit a chart.
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Figure 3-3 Title band before applying grid layout
6.
Right-click in a blank space in the Title band and select Arrange in Container > Grid Layout, or select the Title band and select Grid Layout in the Properties view.
The two elements are arranged to fill the band equally.
Figure 3-4 Title band with grid layout
7.
Resize the elements so that the chart takes up most of the space. To do this, select the chart. In Properties view, in the Layout section of the Appearance tab, set Column Weight to 5.
The elements adjust so that the chart width is five times the image width.
Figure 3-5 Grid layout with column weight
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8.
Now add a static text element to the far right of the title band.
The static text is added at the end of the first row.
Figure 3-6 Adding an element to a grid layout
9.
Position the static text. To do this, select the static text. In Properties view, in the Layout section of the
Appearance tab, set the following:
•
Set Row Number to 1 to move the element to the second row. You could also have added the static text directly below the first row, but setting the row explicitly gives you more control.
•
Set Column Span to 2 to have the element span both columns. You could instead set the Column
Number to 2 to move the static text under the chart.
50
Figure 3-7 Using two rows in grid layout
10. Set the relative heights of the rows. To do this, select the chart and set Row Weight to 10 in the Layout section of the Appearance tab of Properties view. You could actually do this by changing the settings on any of the three elements, but in this case, the chart is the main element and you want other elements to adjust to it.
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Figure 3-8 Using row weight in grid layout
3.3
Formatting Elements
Formatting tools help organize the elements in the report. Right-click the element you want to work on and select a tool from the context menu.
Figure 3-9 Formatting Tools Menu
The tools in the context menu are specific to the selected item(s). The following tables explain the tools.
A container is the band, frame, or cell that contains the element.
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Table 3-1 Formatting Tools
Description Icon Tool Name
Order Tools
Send
Backward
Send to Back
Moves the element behind its current layer.
Moves the element to the bottom layer.
Multiple Select?
Yes
Yes
Align in Container Tools
Align to Left Aligns the left sides to that of the primary element.
Match Height Adjusts height to that of primary element.
Yes
Align to
Center
Align to Right
Aligns the centers to that of the primary element.
Aligns the right sides to that of the primary element.
Yes
Yes
Align to Top
Align to
Middle
Align to
Bottom
Size Components Tools
Match Width
Aligns the top sides (or the upper part) to that of the primary element.
Aligns the middles to that of the primary element.
Aligns the bottom sides (or the lower part) to that of the primary element.
Adjusts width to that of primary element.
Yes
Yes
Yes
Yes
Yes
Yes Match Size Resizes to that of primary element.
Size to Container Tools
Fit to Width Adjusts elements to fill width of container.
Fit to Height Adjusts elements to fill height of container.
Yes
Yes
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Icon Tool Name
Fit to Both
Description Multiple Select?
Adjusts elements to fill width and height of container.
Yes
Arrange in Container Tools
Horizontal
Layout
Centers selected elements vertically.
Vertical
Layout
Grid Layout
Centers selected elements horizontally.
Positions elements in a grid based on properties set on each element.
Miscellaneous Tools
Stretch to
Content
Resizes element to fit the content
PDF 508 Tags Adds tags required for PDF 508C compliance
XLS Tags Adds tags that define how data is exported to the
Microsoft Excel format
Yes
Yes
Yes
N/A
3.4
Graphic Elements
Graphic elements like lines and shapes are used to make reports more attractive and readable. You can also add these by dragging them from the palette to the report editing area.
3.4.1
Line
In Jaspersoft Studio, a line is defined by a rectangle for which the line represents the diagonal. By default, the foreground color is used as the default color and a 1-pixel-width line is used as the line style.
You can customize the look, style, and direction of the line in the element’s Properties view.
3.4.2
Rectangle and Ellipse
The rectangle element is usually used to draw frames around other elements. By default, the foreground color setting is used and a normal 1 pixel width
The ellipse is the only element that has no attributes specific to it. The ellipse is drawn in a rectangle that defines the maximum height and width. By default, the foreground color is used, and a normal 1-pixel-width line is used as line style. The background is filled with the background color setting if the element has not been defined as transparent.
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3.4.3
Images
An image is the most complex of the graphic elements. You can insert raster images (such as GIF, PNG and
JPEG images) in the report, but you can also use an image element as a canvas object to render, for example, a
Swing component, or to leverage some custom rendering code.
Dragging an image element from the Palette into the report editing area launches the Create new image
element dialog. This is the most convenient way to specify an image to use in the report. Jaspersoft Studio does not save or store the selected image anywhere, it just uses the file location, translating the absolute path of the selected image into an expression to locate the file when the report is executed. The expression is then set as the value for the
Image Expression property.
You can add an image by explicitly defining the full absolute path of the image file in your expression. This is an easy way to add an image to the report, but, overall, it has a big impact on the report’s portability, since the file may not be found on another machine (for instance, after deploying the report on a web server or running the report on a different computer).
3.4.4
Padding and Borders
For the image and text elements you can visualize a frame or define a particular padding (the space between the element border and its content) for the four sides. Border and padding are specified by selecting the element in the report editing area, and using the Properties view.
In the Properties view, click the Borders option. This includes the following controls:
• Padding allows you to define padding widths for each of the four sides, or to apply the same value to all sides.
•
Borders allow you to select their color, style, and width, as well as choose where it appears.
As always, all the measurements are shown in pixels.
3.5
Text Elements
Two elements are specifically designed to display text in a report: static text and text field. Static text is used for creating labels or to print static text set at design time, that is not meant to change when the report is generated. That said, in some cases you still use a text field to print labels too, since the nature of the static text elements prevents the ability to display text dynamically translated in different languages when the report is executed with a specific locale and it is configured to use a resource bundle leveraging the JasperReports internationalization capabilities.
A text field is similar to a static text string, but the content (the text in the field) is provided using an expression (which can be a simple static text string itself). That expression can return several kinds of value types, allowing the user to specify a pattern to format that value. Since the text specified dynamically can have an arbitrary length, a text field provides several options about how the text must be treated regarding alignment, position, line breaks and so on. Optionally, the text field is able to grow vertically to fit the content when required.
By default both text elements are transparent with no border, with a black text color. The most used text properties can be modified using the text tool bar displayed when a text element is selected. Text element properties can also be modified using the Properties view.
Text fields support hyperlinks as well. See
3.9.4, “Defining Hyperlinks,” on page 64
for more information.
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3.5.1
Static Text
The static text element is used to show non-dynamic text in reports. The only parameter that distinguishes this element from a generic text element is the Text property, where the text to view is specified: it is normal text, not an expression, and so it is not necessary to enclose it in double quotes in order to respect the conventions of
Java, Groovy, or JavaScript syntax.
3.5.2
Text Fields
A text field allows you to print an arbitrary section of text (or a number or a date) created using an expression.
The simplest case of use of a text field is to print a constant string ( java.lang.String
) created using an expression like this:
"This is a text"
A text field that prints a constant value like the one returned by this expression can be easily replaced by a static field; actually, the use of an expression to define the content of a text field provides a high level of control on the generated text (even if it’s just constant text). A common case is when labels have to be internationalized and loaded from a resource bundle. In general, an expression can contain fields, variables and parameters, so you can print in a text field the value of a field and set the format of the value to present. For this purpose, a text field expression does not have to return necessarily a string (that’s a text value): the text field expression class name the following: property specifies what type of value is returned by the expression. It can be one of
Valid Expression Types
java.lang.Object
java.sql.Time
java.lang.Long
java.lang.Short
java.lang.Boolean
java.lang.Byte
java.lang.Double
java.lang.Float
java.util.Date
java.lang.Integer
java.sql.Timestamp
java.io.InputStream
java.math.BigDecimal
java.lang.String
An incorrect expression class is frequently the cause of compilation errors. If you use Groovy or JavaScript you can choose
String as expression type without causing an error when the report is compiled. The side effect is that without specifying the right expression class, the pattern (if set) is not applied to the value.
Let’s see what properties can be set for a text field:
Blank when null
Evaluation time
Evaluation group
If set to true, this option avoids printing the text field content if the expression result is a null object that would be produce the text “null” when converted in a string.
Determines in which phase of the report creation the Text field Expression has to be elaborated.
The group to which the evaluation time is referred if it is set to Group.
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Stretch with overflow
Pattern
When it is selected, this option allows the text field to adapt vertically to the content, if the element is not sufficient to contain all the text lines.
The pattern property allows you to set a mask to format a value. It is used only when the expression class is congruent with the pattern to apply, meaning you need a numeric value to apply a mask to format a number, or a date to use a date pattern.
3.6
Frames
A frame is an element that can contain other elements and optionally draw a border around them. Since a frame is a container of other elements, in Outline view the frame is represented as a node containing other elements.
A frame can contain other frames, and so on recursively. To add an element to a frame, just drag the new element from the palette inside the frame. Alternatively you can use Outline view and drag elements from a band into the frame. The position of an element is always relative to the container position. If the container is a band, the element position is relative to the top of the band and to the left margin. If the container (or element parent) is a frame, the element coordinates are relative to the top left corner of the frame. Since an element dragged from a container to another does not change its top/left properties, when moving an element from a container to another its position is recalculated based on the new container location.
The advantages of using a frame to draw a border around a set of elements, with respect to using a simple rectangle element, are:
• When you move a frame, all the elements contained in the frame move.
•
While using a rectangle to overlap some elements, the elements inside the rectangle are not treated as if they overlap (respect to the frame), so you don't have problems when exporting in HTML (which does not support overlapped elements).
• Finally, the frame automatically stretches according to its content, and the element position type property of its elements refer to the frame itself, not to the band, making the design a bit easier to manage.
3.7
Inserting Page and Column Breaks
Page and column breaks are used to force the report engine to make a jump to the next page or column. A column break in a single column report has the same effect as a page break.
In the Design tab, they are represented as a small line. If you try to resize them, the size is reset to the default, this because they are used just to set a particular vertical position in the page (or better, in the band) at which
Jaspersoft Studio forces a page or column break.
The type of break can be changed in the Properties view.
3.8
Working with Composite Elements
Composite elements are one or more pre-configured elements that you can use in your reports. You can configure properties such as the size, color, or font of an element, or create a text field with a complex expression you frequently use, and then save it as a composite element. Jaspersoft® Studio also ships with several pre-existing composite elements, such as page number and total pages.
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Some element types are hard to reuse in other reports, in particular, those elements that depend on the availability of a specific subdataset having certain fields. You cannot include elements based on a dataset in a composite element. In particular, composite elements can not include charts, tables, lists and crosstabs.
Composite elements can include notes, text fields, static text, images, breaks, rectangles, ellipses, lines, frames
(must contain only permitted elements), barcodes, HTML elements, and other composite elements.
If your composite element contains elements that use expressions (text-field expressions or print-when expressions), the objects you are referencing in those expressions (such as variables, fields or parameters) should available in the report in which you use the composite elements. If the objects are not present, you may receive an error when compiling or previewing the report.
Composite elements cannot include elements based on a dataset, such as charts or crosstabs.
3.8.1
Creating and Editing Composite Elements
To create a composite element:
1.
Open or create a report.
For example: a.
Go to File > New > Jasper Report or click on the main toolbar.
b.
In the New Report Wizard, select Blank A4 in the Report Templates window and click Next.
c.
Select a name and location for your file (for example, Composite Element Sample Report in MyReports) and click Next.
d.
Choose One Empty Record in the Data Source window and click Finish.
2.
Place the elements you want in the Title band and format and position them.
Composite elements must be created from the Title band.
For example, to create a footer that includes your company name and the page number: a.
Drag the Static Text element to the Title band in your report and type My Company. Then align the company name to the to the left by right-clicking the Static Text element and selecting Align in
Container > Align to Left Margin.
b.
Drag the Page Number element to the Title band in your report. Align the Page Number to the right by right-clicking the Page Number element and selecting Align in Container > Align to Right Margin.
Then, with the Page Number element selected, go to the Text Field tab in the Properties view and click to align the text right.
c.
Select both elements, right-click, and choose Align Components > Align Top.
3.
Select all the elements you want in your composite.
4.
(Optional) To have your elements move together, right-click and select Enclose into Frame from the context menu.
5.
Make sure all elements are still selected.
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Figure 3-10 Selected Elements For Composite Element Creation
6.
Right-click and select Save as Composite Element.
The Composite Element Settings dialog box opens.
Figure 3-11 Composite Element Settings Dialog Box
7.
Enter the following information:
• Name: Enter a unique name you want to appear in the palette.
• Description (optional): Enter a description. If the element uses text fields or expressions, it may be useful to mention these, or the expected data adapter, in the description.
• Icon (optional): Choose the icon that will show in the palette for this composite element. You can choose an icon in JPG, PNG, or GIF format. If you click Browse to locate an icon, and you want to use a PNG or a GIF, you must choose the correct format at the bottom right of the file open dialog. If you do not choose an icon, Jaspersoft® Studio uses the default icon .
• Position in Palette: Select one of Basic Elements, Composite Elements, or Components Pro.
8.
Click Finish.
9.
Click OK on the confirmation message.
The new composite element is saved as a .jrtool file in the same location as your report. An icon is added to the bottom of the subpalette you selected.
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Figure 3-12 Composite Element in the Palette
To edit the contents of a composite element:
1.
Right-click on the composite element in the palette and select Open in Designer.
The composite element opens in the Designer as a .jrtool file.
2.
You can add and remove elements and change element formatting. If you add elements, remember to select all elements and create a frame.
3.
Save the file.
To edit the name or location of a composite element:
1.
Right-click on the composite element in the palette and select Edit.
The Composite Element Settings dialog box opens.
2.
Change the name, description, icon, or position in palette.
3.
Click Finish.
4.
Click OK on the confirmation message.
To delete a composite element you have created:
1.
Right-click on the composite element in the palette and select Delete.
The element is removed from the palette.
You cannot delete the composite elements that are shipped with Jaspersoft® Studio.
3.8.2
Exporting and Importing Composite Elements
You can share composite elements between Jaspersoft® Studio installations using import/export.
To export one or more composite elements:
1.
Right-click on a custom composite element in the palette.
2.
Select Export Composite Elements from the context menu.
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Figure 3-13 Exporting Composite Elements
3.
Select the elements you want to export in the Export Composite Elements dialog.
4.
Click Finish.
5.
When prompted, navigate to the location where you want to save the export file, and click OK.
The selected composite elements are saved as a .zip file in the location you chose.
To import a composite element set:
1.
Right-click on any element in the palette.
2.
Select
Import Composite Elements from the context menu.
3.
Navigate to the location where your zip file is stored, select the file you want to upload, and click Open.
4.
Choose a name, optional description, and optional icon in the Import Composite Element dialog and select the palette where you want the composite element to appear. The name in the palette must be unique.
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Figure 3-14 Importing Composite Elements
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5.
If there are additional elements in the file, click Next and configure the next element as in the previous step.
6.
When you have configured all your imported elements, click Finish.
The composite elements are placed in the palette with the settings you configured.
3.9
Anchors, Bookmarks, and Hyperlinks
This section describes the creation of hyperlinks for most types of elements. For HTML5 charts, they are defined in a different way, as described in
13.5, “Hyperlinks in HTML5 Charts,” on page 235
Image, textfield, and chart elements can be used both as anchors into a document and as hypertext links to external sources or other local anchors. JasperReports provides a powerful combination of settings to define hyperlinks. While a hyperlink usually opens a specific URL, JasperReports broadens the concept, extending it to a more complex object that can be used for more complicated functionality, such as executing a report in
JasperReports to perform a drill-down or drill-up operation, pointing to a page within a PDF document, and so on.
To set anchor, bookmark, or hyperlink properties, go to the Hyperlink tab in the Properties view.
Figure 3-15 Anchor, Bookmark, and Hyperlink Properties
This window is divided in two sections:
•
Anchor and Bookmark
• Hyperlink details
Use Anchor and Bookmark to create an anchor inside the current document; it is only available for elements that support hyperlinks (textfield, image, and chart). The name of the anchor is specified by means of an expression, and the bookmark level is used when the report is exported in PDF to create the Table of Content.
Bookmarks can also be displayed in JasperReports® Server when the report is displayed in the interactive viewer.
Note for developers:
In JasperReports 5.6 and later the same table of content is also available in the JasperPrint object, and can be explored by calling the method:
List<PrintBookmark> getBookmarks()
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3.9.1
Anchors and Bookmarks
An anchor is a kind of label that identifies a specific position in a document. The Hyperlink tab includes a text area where you can enter an expression to be the name of the anchor. This name can be referenced by other links. Clicking the button opens the Expression Editor, in which you write or build the expression.
If you plan to export your report as a PDF, set a bookmark level to populate the bookmark tree, making the final document navigation much easier. To make an anchor available in a bookmark, simply choose a bookmark level higher than 1. Defining different levels creates nested bookmarks.
3.9.2
Overview of Hyperlink Configuration
The definition of a hyperlink, given the number of options, may look a little bit cumbersome, but it is very simple in most of the use cases, in example if we really just want to link to an URL.
The Link Target allows to specify where the link should be open. This is probably the less important option, but since it is the first we encounter, it makes sense start from here (note: we may think to change its position, and move it at the bottom). The Link Target is very similar to the target attribute of an HTML anchor. The drop down box to set it, proposes the most common options (Self, Blank, Top, Parent), but it is still possible to manually specify a target name, which actually makes sense only when the hyperlink is used in a web environment (which is when the final export format is HTML like).
There are several type of hyperlink, and each of them can be used for different scopes. The built-in types provided by JasperReports are: Reference, Local Anchor, Local Page, Remote Anchor Remote Page. The first type, Reference, is the one used to create a typical URL link to some web address like http://www.jaspersoft.com/ and it is rendered in all the output formats supporting web link (include for instance
Microsoft Excel and Word).
The other four are used to point to a position within the current or an external document, and primarily work in
PDF and HTML.
Selecting a type, the user interface change accordingly to the information required by the type itself.
Please note the difference between URL parameters and hyperlink parameters. In the panel to configure a hyperlink there is a section called parameters. When working with a hyperlink of type Reference, these parameters are ignored: they don't have anything to do with the parameters that appear in a regular URL (in particular, the part of the URL following the question mark ). The URL should contain a parameter; you can use the Reference Expression. For example:
“http://www.someurl.com/search?city=“ + $F{city} + “&country= “ + $F{country}
The values of the fields city and country are used to dynamically build a URL.
So why are these parameters interesting? Because they can be used by URL Handlers, especial JasperReports
Library extensions, to manipulate and generate a hyperlinks.
The hyperlink type
ReportExecution is one of these custom hyperlink extensions. It is used to execute a
JasperReports Server report from another JasperReports Server report. This hyperlink type requires that the parameter
_report is defined and points to the JasperReports Server report to execute. If this destination report contains one or more input controls, their value can be set by specifying the name of the input control as the parameter name and providing a value.
A
ReportExecution hyperlink is configured in Jaspersoft® Studio by simply dragging a report unit in the
JasperReports Server repository explorer over an element that supports hyperlink (such as a textfield
).
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Figure 3-16 Dragging a report from the server into the Report Design
The auto configured hyperlink has the type set to ReportExecution and all the _report parameter set. Moreover, if the JasperReports Server Report has input controls, they are added to the list of parameters, ready to be populated with a proper value expression, as shown below.
Figure 3-17 Configuring Hyperlink Parameters
So, in general a hyperlink is defined by a type, one or more expressions (in case of Reference, just the Reference
Expression that contains the URL to invoke), and zero or more parameters, depending by the type (in a regular
Jaspersoft® Studio installation, only the type ReportExecution does actually accept parameters).
Additionally, a hyperlink may also be completed with a ToolTip (by using the Tooltip Expression) and a visibility condition (Print When Expression) which can be used to prevent the link to be considered if the print when expression does not return the Boolean value True (note that an empty print when expression is considered as True).
3.9.3
Hyperlink Types
Jaspersoft® Studio provides six types of built-in hypertext links: Reference, LocalAnchor, LocalPage,
RemoteAnchor and RemotePage. Other types of hyperlinks can be implemented and plugged into JasperReports.
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The following table describes the hyperlink types.
Reference
LocalAnchor
LocalPage
RemoteAnchor
RemotePage
ReportExecution
The Reference link indicates an external source that is identified by a normal URL. This is ideal to point, for example, to a servility to manage a record drill-down tools. The only expression required is the hyperlink reference expression.
To point to a local anchor means to create a link between two locations into the same document. It can be used, for example, to link the titles of a summary to the chapters to which they refer.
To define the local anchor, specify a hyperlink anchor expression that produces a valid anchor name.
If instead of pointing to an anchor you want to point to a specific current report page, you need to create a LocalPage link. In this case, it is necessary to specify the page number you are pointing to by means of a hyperlink page expression (the expression has to return an Integer object)
If you want to point to a particular anchor that resides in an external document, you use the RemoteAnchor link. In this case, the URL of the external file referenced must be specified in the Hyperlink Reference Expression field, and the name of the anchor must be specified in the Hyperlink Anchor Expression field.
This link allows you to point to a particular page of an external document. Similarly, in this case the URL of the external file pointed to must be specified in the Hyperlink
Reference Expression field, and the page number must be specified by means of the hyperlink page expression. Some export formats have no support for hypertext links.
This type of hyperlink is used to implement JasperReports Server’s drill-down feature.
Some export formats have no support for hypertext links.
3.9.4
Defining Hyperlinks
Some types of datasets let you assign a hyperlink to the value represented in the chart; in the report output, clicking the chart opens a web page or navigates to a different location in the report.
The click-enabled area depends on the chart type. For example, in pie charts, the hyperlink is linked to each slice of the pie; in bar charts, the click-enabled areas are the bars themselves.
Image, text field, and chart elements can be used both as anchors into a document and as hypertext links to external sources or local anchors.
To create hyperlinks:
1.
Click the Hyperlink tab in the Properties view.
2.
In the Link Target drop-down, choose one of the following target types:
• Self: This is the default setting. It opens the link in the current window.
• Blank: Opens the target in a new window. Used for output formats such as HTML and PDF.
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• Top: Opens the target in the current window but outside eventually frames. Used for output formats such as HTML and PDF.
• Parent: Opens the target in the parent window (if available). Used for output formats such as HTML and PDF.
3.
In the Link Type drop-down, choose whether the link type is None, Reference, LocalAnchor, LocalPage,
RemoteAnchor, RemotePage, or ReportExecution.
See
for an explanation of the different choices.
4.
Click the button next to Hyperlink When Expression to create a tooltip for your hyperlink.
5.
Save your report.
3.9.5
Hyperlink Parameters
Sometimes you need to define some parameters that must be attached to the link. The Link parameters table provides a convenient way to define them. The parameter value can be set using an expression. The parameter expression is supposed to be a string (since it is encoded in the URL). But when using custom link types it makes sense to set different types for parameters.
3.9.6
Hyperlink Tooltips
The tooltip expression is used to set a text to display as tooltip when the mouse is over the element that represents the hyperlink (this only works when the document is exported in a format that supports this type of interactive use).
3.9.7
Working with Report Units
Up to now we focused on creating links of type Reference. Now let's create a hyperlink to invoke a
JasperReports Server report, specifying which report, and setting values for its input controls. This mechanism requires that the report showing the report is executed in JasperReports server, so it may be considered a way to move from a report unit to another, realizing what is more generally called drill-down and drill-up (for example,
I may want to click a bar in a bar chart related to a country to run a report that shows more about this country, or just details the number represented by the bar itself).
The execution of report units can be done by using hyperlink of type ReportExecution. This type requires to define a hyperlink parameter called “_report”, which holds the location of the report unit inside the
JasperReports server repository.
Other hyperlink parameters can be defined to set values for input controls exposed by the report unit.
The next tutorial shows how to create a link to the report unit 04. Product Results by Store Type Report”, located at /public/Samples/Reports/4_Product_Results_by_Store_Type_Report.
When executed, this report can be filtered by country, anyway, since this report unit does not expose through input controls defined at report unit the country parameter, we cannot pass the country value we have.
1.
Create a new report, following the steps described at the beginning of this chapter (when we created a static link to http://www.jaspersoft.com)
2.
Modify the # of orders measure by adding the following properties in the advanced properties tab: a.
hyperlinkType (contributor: SeriesItemHyperlink, Static value: ReportExecution) b.
hyperlinkTarget (contributor: SeriesItemHyperlink, Static value: Blank)
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3_report (contributor: SeriesItemHyperlink, Static value: /public/Samples/Reports/4_Product_Results_ by_Store_Type_Report)
3.
Publish the report in JasperReports Server and preview it on the web. Click a bar column to open the report units we defined in the previous step.
Note that there is no special syntax to define a parameter, just use as property name the name of the parameter, and select the value (static, bucket or measure based).
The report unit 06. Profit Detail Report (/public/Samples/Reports/ProfitDetailReport) is a good candidate for this test. It exposes the parameter ProductFamily, so by adding the ProductFamily hyperlink property, and by setting it to a value like Drink, can pre-filter its results.
Figure 3-18 Measure Configuration for # of Orders
3.10 Advanced Elements and Custom Components
Besides the built-in elements seen up to now, JasperReports supports two technologies that enable you to plugin new JasperReport objects respectively called “custom components” and “generic elements.” Both are supported by Jaspersoft Studio. Without a specific plug-in offered by the custom element provider, there is not much you can do with it; you can just set the common element properties. Therefore, a custom element developer should provide a plug-in for Jaspersoft Studio through which you can, at least, add the element to a report (maybe adding a palette item) and modify the element properties (implementing what is required to display the additional properties in the Properties view when the element is selected.
3.11 Subreports
The subreport element includes a subreport inside a report. The subreport is represented by an external Jasper file. It can use the same database connection as the parent report or a data source specified in the subreport properties. Subreports are useful for charts that don't need all the data in the main report.
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Reflecting standard Eclipse design, saving or previewing a report that contains subreports does not update the subreports. When you edit a subreport, you must explicitly save and build the subreport in order for the changes to be visible when you preview the report that contains it. To build a subreport, use the Build All button on the toolbar, or type Ctrl-B.
The following briefly describes the characteristics of subreports:
Subreport Expression
Subreport Expression Class
This expression returns a subreport expression class object at run time. According to the return type, the expression is evaluated in order to recover a Jasper object to be used to produce the subreport. In case the expression class is set to java.lang.String
, JasperReports looks for a file following the same approach explained for the Image Expression of the
Image element.
This is the class type of the expression; there are several options, each for a different way to load the JasperReport object used for the subreport.
Using cache This specifies whether the subreport's report object is kept in memory or reloaded each time it's used. It is common for a subreport element to be printed more than once (or once for each record in the main dataset).
The cache works only if the subreport expression type is String, because that string is used as key for the cache.
Connection/Datasource Expression This identifies the expression returned at run time when a JDBC connection or a JRDataSource used to fill in the subreport.
Alternatively you can choose not to pass any data. This option is useful at times. However, a subreport, like any report, returns an empty document if data are not provided. So in this case, the subreport should have the document property When No Data
Type set to something like All Sections, No Detail.
Parameters Map Expression
This optional expression can be used to produce a java.util.Map
object at run time. The map must contain a set of coupled names/objects that are passed to the subreport to set a value for its parameters.
Subreport parameters
This table allows you to define some coupled names/expressions that are useful to dynamically set a value for the subreport parameters using calculated expressions.
Subreport return values This table allows you to define how to store values in local variables calculated or processed in the subreport (such as totals and record count).
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To create a subreport:
1.
Drag the Subreport element from the Palette to the area of your report where you want to use it.
The Subreport wizard provides three options:
• Create a new report: Use this option when you need to use data or a query not available in an existing report.
• Select an existing report: Use this option when you want to choose a report from the repository.
• Just create the subreport element: Use this option to create a placeholder to be used later.
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Figure 3-19 Subreport Wizard
2.
Select Create a new report and click Next. The New Report Wizard > Report Templates window appears.
3.
Select a template for your subreport. For this example, select one of the blank templates. Click Next. The
New Report Wizard > Report file window opens.
4.
Select a location for your subreport, and name it. Click Next. The Data Source window opens.
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Figure 3-20 Data Source and Query
5.
Choose to use the same data adapter as the main report, or a different data adapter.
For this example, choose the same adapter (Sugar CRM). Enter the following SQL query: select count (*), shipcity from orders group by shipcity
Add all the fields to the list on the right. Click Next.
6.
Click Next to skip the Group By step. The Subreport > Connection window opens.
Figure 3-21 Subreport > Connection Window
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7.
Choose to connect either to the same database as the main report or to a different database. For this example, click Use same connection used to fill the master report.
8.
Click Next. The Subreport Parameters window opens.
Figure 3-22 Subreport Parameters Window
9.
For this example, skip this window and click Finish. A new report opens containing all bands.
10. Delete all bands but the Title or Summary band to eliminate extra white space in your report.
You now have a location into which to place your table, chart, or other element attached to the new subreport.
3.12 Custom Visualization Component
The custom visualization component lets you leverage JavaScript in Jaspersoft® Studio and JasperReports®
Server. You can create JavaScript modules and use them in your reports to extend their functionality. The main purpose of the custom visualization component is to render SVG (Scalable Vector Graphics) images. Your modules can leverage third-party JavaScript libraries, such as JQuery. For example, perhaps you want to create reports with dynamic behaviors for interaction and animation; you could leverage D3 ( d3js.org
) to bind data to the Document Object Model (DOM) and manipulate the SVG. Such a report is shown in
, “D3-enabled report,” on page 71
.
Please note that this component is only supported by the Jaspersoft Community
( community.jaspersoft.com
). For this release, TIBCO Jaspersoft Technical Support and Engineering do not support it.
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D3-enabled report
The custom visualization component is a powerful and flexible feature, suitable for advanced users of
JasperReports® Library. Using the component requires advanced coding skills in the following technologies:
•
JavaScript
• CSS
• HTML/DHTML
•
Optionally, any third-party library you want to expose in Jaspersoft® Studio and JasperReports® Server.
Before creating reports that use your third-party library, you must configure various applications to work together; you must:
1.
Install PhantomJS ( phantomjs.org
), which renders your JavaScript module's visual component.
2.
Configure Jaspersoft® Studio and JasperReports® Server to use PhantomJS.
3.
Create a JavaScript module that renders an SVG. This main module, as well as any JavaScript it relies on, are optimized and combined into a single JavaScript file (using a RequireJS build file (build.js). Jaspersoft®
Studio simplifies the optimization process to generate the JavaScript implementation of the component.
Place your JavaScript files somewhere that Jaspersoft® Studio can find it, such as attaching it to the report unit or placing it on the classpath.
Next, create and deploy reports that rely on your custom visualization component to render SVG images. Drag the Custom Visualization component from the Elements palette into the Design tab, and create a report-level property of type com.jaspersoft.jasperreports.components.customvisualization.require.js
; it
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You can also create a custom component descriptor in JSON, which lets you add the following to your component:
•
A component UI – You can specify the property names and types and the data items used by the component.
• A thumbnail image – Used when the component is presented in the component choose, which appears when a component is dragged into the design view.
• Locationof implementation files – You can specify the location of the javascript file and CSS file which implement the component.
This component can help you leverage any number of JavaScript libraries, such as:
• D3.js
• Raphäel
•
Highcharts
•
JQuery
For more in-depth information, please see the articles on our Community wiki that describe the custom visualization component.
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HAPTER
4 C
REATING A
S
IMPLE
R
EPORT
JasperReports® Library is a powerful tool, and Jaspersoft Studio exposes much of its functionality to help you design reports. This chapter introduces the basic steps for defining a report and includes the following sections:
•
•
Adding and Deleting Report Elements
•
•
4.1
Creating a New Report
You can add your own templates, or use one of the supplied templates to create a report from scratch. You have three data source options:
• One Empty Record - Empty rows: This is default data adapter for creating a report without data. You might use this option to define the layout of a report and connect it to a data source later.
• Sample DB - Database JBDC Connection: This is an SQL database provided with the Jaspersoft Studio installation.
• Create a new data adapter: Jaspersoft Studio supports a wide variety of data sources.
To create a new report:
1.
Go to File > New > Jasper Report or click displays the Report Templates page.
on the main toolbar. The New Report Wizard window
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Figure 4-1 New Report Wizard
2.
Select the Coffee template and click Next. The New Report Wizard shows the Report file page.
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Figure 4-2 New Report Wizard > Report file
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3.
Navigate to the folder you want the report in and name the report. To create a new folder, see
4.
Click Next. The Data Source dialog opens. The drop-down menu shows all global data adapters as well as any data adapters available in the project folder you selected. For this example, we use one of the global data adapters shipped with the product, but using a data adapter that is local to a project makes it easier to deploy the data adapter to JasperReports® Server. See
10.1, “Creating and Editing Data Adapters,” on page 148
for more information.
5.
Choose Sample DB - Database JDBC Connection. Enter the query select * from orders
.
Figure 4-3 New Report Wizard > Data Source
6.
Click Next. The Fields window appears. The Dataset list shows all the discovered fields.
Figure 4-4 New Report Wizard > Fields
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7.
Select the following fields and click the right arrow to add them to your report.
• ORDERID
•
SHIPNAME
•
SHIPADDRESS
• SHIPCITY
• SHIPREGION
8.
Click Next. The Grouping window appears.
9.
Click Next and Finish.
Jaspersoft Studio now builds the report layout with the selected fields included as shown.
Figure 4-5 New Report in the Design Tab
4.2
Adding and Deleting Report Elements
You can add and delete fields and other elements to your report.
4.2.1
Adding Fields to a Report
To add fields to an already created report:
1.
Select the main node of the report from the Outline view.
2.
Select the Report tab in the Properties view and click the Edit query, filter and sort options button in the Dataset section.
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Figure 4-6 Dataset section in properties view
The Dataset and Query Dialog opens.
Figure 4-7 Dataset and Query Dialog
3.
Add more fields by clicking the Read Fields button. All the fields discovered are added as new fields in the report.
You can also change your query in the same dialog. If a new query discovers fewer fields than used in the existing report, the fields not included the new query are removed from your report.
4.
Click OK to return to the Design tab.
5.
Expand Fields in the Outline view to see all the fields now available for your report.
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Figure 4-8 Fields
6.
To add a field to your report, click the field and drag it into the Design.
When the field object is dragged inside the detail band, Jaspersoft Studio creates a text field element and sets the text field expression for that element.
4.2.2
Deleting Fields
To delete a field from a report, right click the field in the Design and select Delete.
4.2.3
Adding Other Elements
To add other elements, such as lines, images or charts, drag the element from the Palette into the Design. See
3.2.1, “Inserting Elements,” on page 45
for more information.
4.3
Previewing a Report
Click the Preview tab at the bottom of the report. The preview compiles the report in the background with data retrieved by the query through your JDBC connection.The Detail band repeats for every row in the query results, creating a simple table report:
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Figure 4-9 Report Preview
Each subreport is saved in a separate report file. Reflecting standard Eclipse design, saving or previewing a report that contains subreports does not update the subreports. When you edit a subreport, you must first build the subreport and then save the file in order for the subreport changes to be visible when you preview the report that contains it.
• To build a subreport explicitly, use the Build All button on the toolbar, or type Ctrl-B. Alternatively, select Project > Build Automatically to have Jaspersoft® Studio do it for you.
• To save a subreport, use File > Save or File > Save As.
4.4
Creating a Project Folder
Project folders help you organize your reports.
To create a project folder:
1.
Choose File > New > Project. The Select a wizard dialog appears.
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Figure 4-10 Select a Wizard
2.
Enter Jasper in the Wizards bar to filter actions to those related to Jaspersoft Studio
3.
Select JasperReports Project. Click Next. The New JasperReports Project wizard appears.
4.
Enter a name for your project and click Finish. The Project Explorer displays your project.
Figure 4-11
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C
HAPTER
5 A
CCESSING
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ASPER
R
EPORTS
S
ERVER FROM
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ASPERSOFT
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TUDIO
This section describes functionality that can be restricted by the software license for JasperReports®
Server. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft®.
You can connect Jaspersoft® Studio to JasperReports® Server and move reports between the two. Jaspersoft®
Studio uses web services to interact with the server.
Connecting with JasperReports® Server enables you to:
•
Browse the repository on the server from Jaspersoft® Studio.
•
Add reports and subreports to the repository from Jaspersoft® Studio.
• Drag and drop images and other resources from the repository to Jaspersoft® Studio.
• Add and delete folders and resources on the server from Jaspersoft® Studio.
•
Modify resource properties on the server from Jaspersoft® Studio.
•
Link input controls to reports on the server.
• Import and export data sources (JDBC, JNDI, and JavaBean).
• Download, edit, and upload JRXML files.
•
Connect to multiple servers for access to both test and production environments.
•
Create a report in Jaspersoft® Studio based on a Domain in JasperReports® Server (commercial edition only).
This chapter contains the following sections:
•
Connecting to JasperReports Server
•
Publishing a Report to JasperReports Server
•
•
Creating and Uploading a Topic for Ad Hoc Views
•
Managing Repository Objects through Jaspersoft Studio
•
Creating and Uploading Chart Themes
•
•
Understanding the repo: Syntax
•
Adding a Date/Time Stamp to Scheduled Output in JasperReports Server
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5.1
Connecting to JasperReports Server
To connect Jaspersoft® Studio to the server:
1.
Start Jaspersoft Studio.
2.
Open the Repository Explorer, then click the Create a JasperReports Server Connection icon
The Server profile wizard appears.
.
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Figure 5-1 Server Profile Wizard
3.
Enter the URL, user names and password for your server. If the server hosts multiple organizations, enter the name of your organization as well.
The defaults are:
• URL:
• Commercial editions: http://localhost:8080/jasperserver-pro/
• Community edition: http://localhost:8080/jasperserver/
• Organization: There is no default value for this field. If the server hosts multiple organizations, enter the ID of the organization to which you belong.
• User name: jasperadmin
• Password: jasperadmin
Note that if you are upgrading from a previous version of Jaspersoft Studio, the old URL
( http://localhost:8080/jasperserver-pro/services/repository
) still works.
4.
Click Test Connection.
5.
If the test fails, check your URL, organization, user name, and password.
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Connection problems can sometimes be caused by Eclipse's secure storage feature, which improves your security by storing passwords in an encrypted format. For more information, refer to our Eclipse Secure
Storage in Jaspersoft Studio Community wiki page.
6.
If the test is successful, click Finish.
The server appears in the Repository Explorer.
Figure 5-2 Repository Explorer
5.1.1
Advanced Connection Settings
You can configure additional properties for your JasperReports® Server connection using the Advanced Settings in the Server profile wizard. The following options are available:
• JasperReports Library Version – Sets the version of the JRXML output generated by Jaspersoft®
Studio. When you connect to a JasperReports® Server instance that is earlier than your version of
Jaspersoft® Studio, use this setting to convert your JRXML to the version used by the server. You can view server information, including the server version, on the info tab.
• Connection Timeout [ms] – Sets the connection timeout in milliseconds.
• HTTP Chunked Requests – Enables chunked transfer encoding. Disable this option if your firewall blocks incomplete response chunks.
• Use SOAP protocol only – Sets communication between Jaspersoft® Studio and the server to use the
SOAP format. Can't be used with single sign-on.
• Use Single Sign On – Lets you connect to a connect to a JasperReports® Server instance that has been configured to work with the Central Authentication Service (CAS) protocol. See
5.1.2, “Using Single Signon with JasperReports Server,” on page 84
for more information.
• Supports DateRange Expressions – Lets you upload queries with relative dates to JasperReports®
Server. See
8.3.4, “Relative Dates ,” on page 134
• Synchronize DataAdapter Properties – Synchronizes the net.sf.jasperreports.data.adapter
property with the Jaspersoft® Studio data adapter setting.
• Format of Attachements – Sets the message attachment format to MIME or DIME.
• Workspace Folder – Lets you designate the folder in the workspace where you want to store files downloaded from this JasperReports® Server instance.
• Locale – Sets the locale to use for the Jaspersoft® Studio connection to the server.
• Time Zone – Sets the timezone to use for the Jaspersoft® Studio connection to the server.
• Info tab – Shows information about the JasperReports® Server instance, including version number, edition, license expiration, licensed features, and data and timestamp format.
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5.1.2
Using Single Sign-on with JasperReports Server
You can use single sign-on (SSO) to connect to a JasperReports® Server instance that has been configured to work with the Central Authentication Service (CAS) protocol. For information about configuring CAS for
JasperReports® Server, see the JasperReports® Server External Authentication Cookbook.
Configure JasperReports® Server:
1.
Before you begin, configure your JasperReports® Server instance for CAS, as described in the
JasperReports® Server External Authentication Cookbook.
Add the CAS server to your Jaspersoft® Studio workspace:
1.
In Jaspersoft® Studio, select Window > Preferences.
2.
In the Preferences window, navigate to Jaspersoft Studio > Jaspersoft Server Setting > Single Sign
On Server.
Figure 5-3 Single Sign On Servers in Preferences Dialog
3.
In the Single Sign On Servers pane, click Add.
4.
Enter the URL of your CAS server along with the username and password you want to use for access.
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Figure 5-4 SSO Server Settings Dialog
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5.
Click OK.
The CAS server is added to the list of available single sign-on servers.
6.
Click OK.
Configure your JasperReports® Server connection to use CAS:
1.
In Jaspersoft® Studio, open the Repository Explorer, then click the Create a JasperReports Server
Connection icon .
2.
Select Advanced Settings.
3.
Enable the Use Single Sign On option.
The Account section of the Server profile wizard changes.
Figure 5-5 Setting Single Sign-on in the Server Profile Wizard
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4.
If the server hosts multiple organizations, enter the ID of the organization to which you belong. This can be the root organization (in which case you can leave this entry bar blank) or another organization.
5.
Select the CAS server you want to use for this connection from the SSO Server menu.
6.
Click Test Connection to test the connection. This may take some time, especially the first time you connect.
7.
Click OK in the confirmation dialog.
8.
Click OK to create the connection.
5.2
Publishing a Report to JasperReports Server
You can easily publish your reports from Jaspersoft Studio to any JasperReports® Server connection. Publishing to the server uploads the JRXML for the report, along with any resources that the report needs such as images and query resources. You must also configure the data source for the report on the server.
5.2.1
Publishing Report Resources
The reports you create in Jaspersoft® Studio can have embedded resources, such as such as images, query resources, and data adapters using net.sf.jasperreports.data.adapter
. You can use the following columns in Select Resources to publish page of the Report Publishing Wizard to control the resources you upload:
• Overwrite – Controls whether or not you overwrite a resource if it already exists. This setting is important when you republish a report that has been published before. Click on the value in this column to display a drop-down menu with the following choices:
• Overwrite – Creates a new resource or overwrites an existing resource with the current version.
• Ignore – Ignores the resource.
• Overwrite Only Expression – Updates the expression for the resource. Enter the new value in the
Expression column. Does not create or overwrite the resource.
• Expression – When Overwrite or Overwrite Only Expression is selected, lets you choose the expression you want to use. Click on the value in this column and then click ... to open the Expression
Editor and edit the expression that specifies the location where the file is saved. By default, resources such as images are published to a repository location, and the uploaded report uses the repo: syntax to refer to the report location.
• Type – When Overwrite is selected, specifies the existing resource to overwrite. Click on the value in this column to display a drop-down menu with the following choices:
• Save to Folder – Save to a location anywhere on your JasperReports® Server instance. When you choose this option, you are prompted to navigate to the location you want.
• Link to Resource – Links to an existing resource on your JasperReports® Server instance. When you choose this option, you are prompted to navigate to the resource you want. If you modify a report and the report is set to Overwrite, changes overwrite only the path, not the resource.
• Use Local Resource – Save as a resource inside the report unit on JasperReports® Server.
5.2.2
Choosing a Data Source for a Published Report
In JasperReports® Server, data is usually specified using a JasperReports® Server data source. Like a data adapter, a JasperReports® Server data source does not contain data; instead it contains the information
JasperReports® Library needs to construct a
JRDataSource when the report is run. Choosing a JasperReports®
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Server data source instead of a data adapter when you publish a report to JasperReports® Server lets you take advantage of features specific to JasperReports® Server or to use a JNDI connection configured on your application server.
When you upload a report from Jaspersoft® Studio to JasperReports® Server, you can choose one of the following options:
• Data Source from Repository – Use an existing JasperReports® Server data source for your report.
• Local Data Source –Create a JasperReports® Server data source or upload a Jaspersoft® Studio data adapter file to use in your report.
• No Data Source – Make no changes to the data adapter information in your report.
5.2.2.1 Data Source from Repository
The Data Source from Repository option lets you choose an existing data source from the JasperReports
Server repository.
To use the Data Source from Repository option:
•
Make sure the data source is available in JasperReports® Server. If you want to create a data source, select
Local Data Source instead.
•
Click
If you are using a JDBC or JNDI data source, make sure that your connection uses the same driver as your Jaspersoft® Studio data adapter. For example, if you connect to an Oracle database from a commercial edition, you can download and use the native Oracle driver or you can use the TIBCO Oracle
JDBC driver that is included with Jaspersoft® Studio. If your driver in JasperReports® Server does not match the driver used in Jaspersoft® Studio, you could see different data in your uploaded report.
to publish your report and select a JasperReports® Server instance and repository location where you want to save the report. Then click OK. If you are prompted to upload resources, select your settings.
•
Select Data Source from Repository when prompted.
• Click ... and select the correct JasperReports® Server data source from the repository.
5.2.2.2 Local Data Source
The Local Data Source option lets you create a new data source in JasperReports® Server to use with your report, or to upload a data adapter from Jaspersoft Studio to JasperReports Server. To use this option to create a new data source:
•
If you want to use a JNDI data source, first set up the JNDI connection for your database in your application server. Make sure to use the same JDBC driver for your Jaspersoft® Studio adapter and the
JNDI connection in JasperReports® Server.
• Click to publish your report and select a JasperReports® Server instance and repository location where you want to save the report. Then click OK. If you are prompted to upload resources, select your settings.
• Select Local Data Source when prompted.
• Click ... to open the Add Resource wizard.
•
Select the type of data source you want to create , for example, Datasource JDBC, and click Next.
•
On the Resource Editor page, enter a name and unique ID for the data source. You can also enter an optional description. Then click Next.
• On the next page, manually fill in the required information for the data source you want to create.
•
Click Finish to create the data source and use it in your uploaded report.
For some types of data sources, such as JDBC, JNDI, and bean data sources, you can publish a data adapter from
Jaspersoft® Studio and set it as the data source for the report:
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•
Make sure that the data adapter you want to upload is saved locally as an xml file in the same project as your report. See
10.1.2, “Importing and Exporting Data Adapters,” on page 149
for information about exporting a global data adapter to your project; see
10.1.3, “Copying a Data Adapter,” on page 150
for information about copying a data adapter from one project to another.
• Click to publish your report. Select a JasperReports® Server instance and repository location where you want to save the report. Then click OK.
• If you are prompted to upload resources, select your resource settings and click OK.
• Select Local Data Source when prompted.
•
Click ... to open the Add Resource wizard.
•
Select the type of data source you want to create and click Next. Only some data source types can be imported from data adapters in Jaspersoft® Studio, such as Datasource Bean, Datasource JDBC, and
Datasource JNDI.
• On the Resource Editor page, click Import from Jaspersoft Studio. If this button is not available, you can't import the data source type you selected.
•
The Import dialog shows a list of local and global adapters. Make sure to select a local adapter, which will include the name of a file. Click OK then Finish to select the adapter.
• Click Finish to publish the report and selected data adapter to the repository.
If you are using a custom data adapter or any other adapter that uses one or more jars that aren't included in JasperReports® Server, add the jar(s) to a location on your server classpath.
5.2.2.3 No Data Source
Use No Data Source when you have configured net.sf.jasperreports.data.adapter
in your JRXML, as described in
10.2.3, “Default Data Adapter ,” on page 151
net.sf.jasperreports.data.adapter
lets you use multiple data adapters in the same report, for example, using a different data adapter for a subreport.
To use this option:
•
Set the default data adapter(s) for the datasets and subdatasets used in your report, as described in
“Default Data Adapter ,” on page 151
• Follow these guidelines when setting default data adapters in a report that you want to publish:
•
Do not use global data adapters. The default data adapter must reference a local file in the same project as your report, or a data adapter already in your repository.
•
Where possible, use inheritance to reduce the number of times you actually set the default data adapter.
If your report uses a specific adapter multiple times, try to structure the report so that the data adapter is set for a single dataset and other datasets inherit it. For example, if you have a crosstab and a table that use the same data adapter, you could create a subreport that contains the table and crosstab. Then if you set your data adapter as the default for the subreport, the table and crosstab inherit this adapter. Reusing the data adapter improves performance when you run the report.
•
Publish your report and select No Data Source when prompted.
•
When you publish the report, the default data adapters are uploaded to the repository.
5.2.3
Example of Publishing a Report
To publish a report to the server:
1.
Open a report.
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2.
Click the Publish Report button
Wizard opens.
in the upper-right corner of the Designer. The Report Publishing
Figure 5-6 Report Publishing Wizard
3.
Locate the directory for storing your report.
4.
Name the report unit. The report unit contains all report files.
5.
Click Next. The Select Resources window opens. This window displays any resources required by your report, such as images, query resources, and embedded data adapters.
Figure 5-7 Select Resources
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6.
Select any resources you want to upload with your report and check the box if you want to overwrite previous versions of those resources. Click Next. The Configure the data source window opens.
Figure 5-8 Configure Data Source
7.
Select a data source configuration. See
5.2.2, “Choosing a Data Source for a Published Report,” on page 86
for more information.
8.
Click Finish. The report is uploaded to the server. If there are no errors, an appropriate message is shown.
5.3
Publishing a Report Template
This section describes functionality that can be restricted by the software license for Jaspersoft® Studio. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
You can add custom report templates to your JasperReports Server instance by uploading a JRXML file to a
Templates directory. In addition to font and color choice, reports templates can contain images such as logos. In a template, the absolute path of an image is in the repository and cannot be overwritten. Other users can apply your template by selecting Custom Report Template when they create a report from an Ad Hoc View.
5.3.1
Creating a Report Template based on a Template in the Server
It's easiest to start with a template in JasperReports Server and change its properties (such as colors, fonts, and logos) in Jaspersoft® Studio. Then, publish the new template to the server. This example shows how to change the font for a chart title.
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To create a template:
1.
Connect to JasperReports Server as superuser.
2.
In the Repository Explorer, navigate to the Public/Templates directory.
Figure 5-9 Accessing the Templates directory from Jaspersoft® Studio
3.
Right-click A4 Landscape and choose Open in Editor.
Figure 5-10 Default A4 landscape template
The document will look empty, but if you click the Source tab, you see that attributes are set at the
JRXML level. Note the attributes for ChartTitle:
<style name="ChartTitle" forecolor="#000000" fontName="DejaVu Sans" fontSize="12" isBold="true"/>
You can edit styles directly on the Source tab if you choose.
4.
Click the Design tab and in the Outline view, click the arrow next to Styles.
5.
Click ChartTitle. The styles open in the Properties view.
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Figure 5-11 Style tab in Properties view
6.
Make these changes: a.
Font: Century Gothic, 14 pt, bold, italic.
b.
Change the forecolor to red (Click Appearance for that change.) c.
Alignment: Center
You can link to an image in your template by uploading the image to the repository and then dragging it into the appropriate band in the template. The template uses the absolute path to the image in the repository and the image cannot be changed or overwritten.
To save and publish a template:
1.
Save the template with a new name.
2.
Click Yes in the pop-up to publish the report to JasperReports Server.
The Report Publishing wizard appears.
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Figure 5-12 Report Publishing wizard
3.
Select a folder to store your template, and click Next.
5.3.2
Report Template Styles in Jaspersoft® Studio
In Jaspersoft® Studio a report template includes styles that inherit attributes from other styles or from default values. Open one of the default templates in Jaspersoft® Studio to see the available styles listed in the Outline view. When a report template is applied to a report that includes a basic chart, only the ChartTitle style is applied to the chart. In general, report styles control the general look of the report, while chart themes control the look of basic charts (implemented through JFreeCharts). For more information on chart themes, see
The Inheritance tab in the Properties view shows you which styles are inherited and from where. That makes it easy if you want to change a style at a higher level, or have an attribute inherited by more styles.
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Figure 5-13 Inheritance tab
5.4
Creating and Uploading a Topic for Ad Hoc Views
When a JasperReports® Server user creates an Ad Hoc view, she can select a Topic, Domain, or OLAP client connection to provide data to the view. This determines the data presented in the editor and the features available to the user. A Topic is the simplest to create, because it's just a report unit that defines a query. Most other elements of the report unit (such as its layout) are ignored when it's used as a Topic, though input controls you define in the report unit are carried over to the topic's Ad Hoc views and their dependent reports. Topics also support resource bundles and localization.
The following steps show how to create a new Topic based on the sample database provided with Jaspersoft
Studio, and then upload it to the Topics folder in the JasperReports® Server repository.
To create a Topic's JRXML:
1.
In Jaspersoft® Studio, click File > New > Jasper Report. The report wizard appears.
2.
Select a report template and click Next.
3.
Select a location to save the JRXML, enter a name for it, and click Next.
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In this case, name the file my-topic.jrxml.
4.
Select a data adapter for the Topic. In this case, select the Sample DB - database JDBC connection.
This sample includes the same data as the SugarCRM data source in the JasperReports® Server samples.
5.
In the text field, enter a query. In this case, enter: select * from orders
6.
Click Next.
7.
Move all the fields in the left list into the right list and click Next.
8.
Click Next again to skip past the Group By option.
9.
Click Finish. The wizard closes and Jaspersoft Studio displays the JRXML, which has been saved in the location specified.
To upload the Topic:
1.
In the Repository Explorer, expand the Servers node and select the JasperReports® Server instance where you want to put the Topic.
If you haven't created any server connections, create one before proceeding. For more information, see
“Connecting to JasperReports Server,” on page 82
2.
Navigate to the Topic folder. For example, if you are logged in as jasperadmin, navigate to Ad Hoc
Components > Topics.
3.
Right-click the Topics folder and select New. The Add Resource wizard appears.
4.
Click Report Unit and click Next.
5.
Enter a name and optional description it and click Next.
6.
Enable the Local Resource radio button it and click to locate and select the JRXML you created above. For example, click Upload/Download Resource, click Upload from Workspace, select the mytopic.jrxml file.
7.
Click OK to close the upload window and click Next.
8.
Click the Data Source from Repository radio button and click to its right.
9.
Navigate to Analysis Components > Analysis connections, select the SugarCRM data source, and click OK.
10. Click Finish to upload the report unit to the Topics folder so it can be used in the JasperReports® Server
Ad Hoc Editor.
To test the Topic:
1.
Log in to JasperReports® Server.
2.
Click Create > Ad Hoc View.
3.
On the topics tab of the Data Chooser, open the Topics folder. For example, navigate to Organizations >
Topics.
4.
Click the Topic you created above and click Table, Chart, or Crosstab.
5.
Verify that the fields you selected in Jaspersoft Studio all appear in the list of available fields.
If the Topic includes fields with unusual datatypes, those fields don't appear in the Ad Hoc Editor because
JasperReports® Server is not equipped to manage them properly. For example, if the Topic is defined against a MongoDB instance that returns data of type array, this field isn't available in the Ad Hoc Editor.
For more information on datatype support in the Ad Hoc editor, see the JasperReports® Server
Administrator Guide.
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When you create a JRXML file for use as a Topic, you can specify the name to display for each field the Topic returns. To do so, define a field property named adhoc.display
for each field declared in the JRXML. The adhoc.display
field property must have the following syntax:
<property name=”adhoc.display” value=”Any Name”/>
For example, this JRXML code declares a StoreState field displayed in reports as Store State:
<field name=”StoreState” class=”java.lang.String”>
<property name=”adhoc.display” value=”Store State”/>
</field>
Topics also support the $R expressions for field names; for more information, see
2.3, “Expressions,” on page 34
For fields in a non-domain topic the following properties may be of interest:
• dimensionOrMeasure
, which marks a field as a field or a measure
• defaultAgg
, the aggregation to use for this measure (for example, avg
)
• semantic.item.desc
, a description of the field
•
DefaultMask
, which sets a measure as a $ or date
5.5
Managing Repository Objects through Jaspersoft Studio
The Repository Explorer lets you create, view, modify, and delete reports units and the resources they reply on.
This section describes these tasks:
•
Adding, Modifying and Deleting Resources
•
•
•
Creating and Uploading Chart Themes
5.5.1
Adding, Modifying and Deleting Resources
You need to create and manage the resources associated with your reports, such as images, JARs, JRXML files, property files for localized reports, input controls, datatypes, lists of values, style templates (JRTX), and data sources. If you’re maintaining existing reports, you may need to modify existing resources. You can also change the location, name, or description of the repository folders.
You can add, modify, or delete repository resources from Jaspersoft® Studio. In the Repository panel, expand your JasperReports® Server repository and take one of the following actions:
•
To add a resource, right-click a folder, select New, then select the type of object you want to add.
If you choose to add an item other than a JasperReport, a dialog appears for entering information about the object. If you choose to add a JasperReport, a wizard guides you through the process. For the best results when adding a JasperReport, open the JRXML in Jaspersoft® Studio and click .
Follow the steps in the wizard to publish your report. See
JasperReports Server,” on page 86
• To change the location of a repository resource, drag it to a new location.
• To delete a resource from the repository, right-click it and select Delete.
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•
To modify a repository resource, right-click it, select Properties, and make your changes in the Properties dialog. On the General tab, you can view the object’s repository ID, name, and description. (Available tabs depend on the selected resource.)
If you are logged in as a user with sufficient access rights (such as jasperadmin or superuser), you can modify property values and save them back to the repository.
• To change an input control, use the Input Control Resource tab.
Figure 5-14 Properties of an Input Control Resource
5.5.2
Running a Report
Connect to JasperReports Server to test report changes you make in Jaspersoft® Studio. See
JasperReports Server,” on page 82
.
Navigate to your report's JRXML, and click Run Report Unit. If prompted to save the report unit, specify a location on your local computer and click OK. If the report has input controls that require values, you'll be prompted to specify them. The report appears in a browser window.
5.5.3
Editing a Report
In the Repository Explorer, the icon means a report unit, and means a JRXML file. When you work with a JRXML file in the Repository, Jaspersoft® Studio operates on a copy of the file. You need to upload the
JRXML file to put it back into the repository when finished.
To edit a JRXML file in the Repository:
1.
In the Repository Explorer, right-click the JRXML file, and select Open in Editor. The JRXML appears in the Design tab.
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The JRXML is stored locally in your workspace. The default location is in the user directory of your operating system. For example, in Windows, the default workspace is
C:\Users\<username>\JaspersoftWorkspace\MyReports.
2.
Edit the file, either in the Design tab or in the Source tab. For example, in the Repository Explorer navigate to the Images\JR Logo image resource, and drag it into to the report's Title band. The logo appears in the Design tab.
3.
Click Save. If you're prompted to publish the report, click Yes.
4.
Specify a server and a repository location. To save the JRXML to the same report unit where you opened it, click Next.
If the report relies on resources, you're asked if you want to overwrite the resources currently in the repository. If you added resources to the report, you are prompted to add them to the repository.
5.
Click Next. and specify a data source for the report. You can't change a data source through the Publish wizard.
Click Finish. Your changes are saved to the repository.
To edit a Report Unit in the Repository:
1.
In the Repository Explorer, right-click the report unit and select Properties.
2.
On the Resource Editor tab, change the name and description.
3.
On the Report Unit tab, you can change the JRXML file for the report, either by selecting one from the repository, or uploading one through Jaspersoft® Studio.
4.
On the Data Source tab, select the data source from the repository or from Jaspersoft® Studio.
5.
On the Input Controls tab, set the display properties for any input controls:
•
Pop-up Screen: the controls are shown on-top of the report viewer.
• Separate Page: the controls are shown in a different page than the report viewer.
• Top of Page: the controls are shown at the top of the report viewer.
•
In Page: the controls are shown next to the report viewer.
6.
You can also use the JSP field to modify the appearance of the controls. Specify a name of a JSP file in
WEB-INF of the server's host to define the page that displays input controls.
7.
Click Finish.
5.6
Creating and Uploading Chart Themes
Using Jaspersoft® Studio, you can create new chart themes to give a custom look to any JFreeChart. You can set the fonts, colors, line widths, and other settings that determine the appearance of charts. Then upload the chart theme for use in reports generated on the server, either on a report-by-report basis or as a global setting for all charts that don't provide their own theme.
To create a new chart theme in Jaspersoft® Studio:
1.
Select File > New > Other. The New wizard appears.
2.
Expand Jaspersoft Studio, select Chart Themes, and click Next. The new file dialog suggests a default file name. Chart themes use the .jrctx file extension.
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Figure 5-15 New Chart Theme in Jaspersoft® Studio
3.
Specify a location, enter a name, and click Finish.
The chart theme editor appears; it displays several types of charts to help you understand how the theme will be applied to each.
The available options are based on the JFreeChart library used to generate charts.
Jaspersoft® Studio supports only the most common options provided by JFreeCharts.
4.
In the Outline view, select each category and review the available options in the Properties view.
5.
Select a property to change its value.
Depending on the nature of the property, you might type text, select a color, check or clear a check box, or select a value from a drop-down. As you update the chart theme, the Preview tab shows your changes. For example, select Title in the Outline view and choose Bottom from the Position drop-down to move the title beneath the chart.
6.
Click a chart type in the Preview tab to zoom in to examine the effects of your changes more closely. Click again to zoom out.
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Figure 5-16 A Chart Theme Edited in Jaspersoft® Studio
7.
To view the XML that defines the chart theme’s appearance, click the Source tab.
8.
When you are satisfied with the chart theme, click File > Save to save the chart theme. This saves the chart theme to your local hard drive.
To export your theme as a JAR File:
1.
Select your chart theme and click the Export Chart Theme jar icon on the toolbar. A Save As dialog opens.
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Figure 5-17 Exporting a Chart Theme
2.
Choose the location where you want to save your JAR. To upload to an instance of JasperReports® Server, select your server instance and then select the Templates directory. To create a jar on your current system, select a location on your hard drive.
3.
Enter a file name and theme name for your theme.
4.
If you want to use the theme to design reports on your current system, save to a location on your hard drive and select Add the jar to the CLASSPATH to use the theme in the report designer.
5.
Click OK. The chart theme is exported as a JAR.
Once you have uploaded a theme to JasperReports® Server, you can use the repo: syntax in your reports to specify this JAR as your chart theme. The theme can be used at the report or server level in
JasperReports® Server. For more information, refer to the JasperReports® Server Administrator Guide.
5.7
Working with Domains
This section describes functionality that can be restricted by the software license for JasperReports
Server. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
You can create reports based on Domains defined in JasperReports® Server. Such reports use data adapters to load data stored in the Domains. To create a Domain-based report, create a data adapter and design a report with its data. Before you create these objects, you'll need a connection to the server. See
JasperReports Server,” on page 82
.
To create a Domain-based report:
1.
Click File > New > JasperReport. The New Report Wizard appears.
2.
Select a template and click Next.
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3.
Select a location to save your report, enter its name, and click Next.
4.
When prompted for a data adapter, select Domain JRS - Query Executor adapter.
5.
Select a server connection. Ignore the notice that changing the server resets the query. As this is a new report, there's no query yet.
6.
Click Yes. The Domain drop-down is populated with a list of Domains defined on the server.
7.
Click the Domain containing the data for your report. Ignore the notice that changing the Domain resets the query. As this is a new report, there's no query yet.
8.
Click Yes.
9.
Select items in the Domain on the left-side of the dialog, and drag them to the right-side to create fields and filters.
10. When you have the fields and filters you need for your report, click Next. You are prompted to select fields for your dataset.
11. Select the fields to include, and click Next. You are prompted to define grouping in your dataset.
12. Select a field for grouping your data and click Next.
13. Click Finish to complete your report. The blank report appears in the Design tab. Use the Palette and
Outline to define your report as usual.
14. Click Preview to test your report. Jaspersoft® Studio compiles your report; if it's successful your report is filled and displayed.
15. Review your report, make any needed changes, and save it.
16. Click to publish your report. For more information, see
5.2, “Publishing a Report to JasperReports
.
5.8
Understanding the repo: Syntax
In some cases, you may see the repo: syntax used to refer to a location in a JasperReports® Server repository.
The repo: syntax can be used to refer to any type of resource, such as reports, images, data sources, and input controls. The repo: syntax can be used in two ways:
• repo: used without a path – A resource of a report. This syntax is generated when a resource is selected when a report is published to the repository. For example, if you upload an image as a resource of a report, you might see JRXML like this:
<imageExpression class="java.lang.String">
<![CDATA["repo:AllAccounts_Res2"]]>
</imageExpression>
When you publish a report to JasperReports® Server and upload your resources, Jaspersoft® Studio updates the JRXML in the published report to use the repo: syntax to refer to the uploaded resources in the repository.
• repo: used with a path – A resource saved somewhere in the repository. For example, to refer to an image in the repository, you might see JRXML like this:
<imageExpression class="java.lang.String">
<![CDATA["repo:/Images/myimage.jpg"]]>
</imageExpression>
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In a multi-organization deployment of JasperReports® Server, the path used in a repo: expression is relative to the organization of the current user. For example, if User1 in Organization_1 accesses the report,
JasperReports® Server looks for myimage.jpg in the Images folder of Organization_1. If User2 in
Organization_2 accesses the report, JasperReports® Server looks for myimage.jpg in Images folder of
Organization_2.
To set the location globally, use /root as the base of your repo: path. For example, to set the path to an image in the Images folder in Organization1, use the following:
/root/Organizations/Organization_1/Images/myimage.jpg
5.9
Adding a Date/Time Stamp to Scheduled Output in JasperReports
Server
When you add a parameter named
_ScheduledTime to a JRXML report design in Jaspersoft® Studio, and then schedule the report to run in JasperReports® Server, the output includes a date/time stamp showing when the report ran. The following procedure describes how to set up and use this parameter:
To display the date/time that the report ran:
1.
Launch Jaspersoft® Studio, and open an existing report.
2.
In the Outline view, right-click Parameters, and select Create Parameter.
3.
Rename the parameter
_ScheduledTime
.
The new parameter appears in the outline view.
Figure 5-18 _ScheduledTime Parameter in Outline View
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4.
Set the following parameter properties:
• Class = java.util.Date
•
Is for Prompting = unchecked
Figure 5-19 _ScheduledTime Parameter Properties
5.
Drag the _ScheduledTime element from the Outline View to a valid location, such as the Title Band, in the Designer:
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Figure 5-20 Report Design Includes the _ScheduledTime Parameter Element
6.
Now you can set other properties, such as the text color of the date/time stamp. In Properties, check Blank
when Null to prevent the word null from appearing on the report when it runs unscheduled.
7.
Compile the report, and upload it to JasperReports® Server. For more information about uploading reports to JasperReports® Server, see
“Accessing JasperReports Server from Jaspersoft Studio” on page 81
8.
In the server, schedule the report to run immediately.
9.
Open the output file.
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Figure 5-21 Output Showing the Scheduled Time the Report Actually Ran
The date and time the report actually ran appears in the output, as well as the scheduled time. In the screenshot above there was a 13-second delay between the scheduled start time and the actual run time.
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C
HAPTER
6 W
ORKING WITH
F
IELDS
In a report, there are three groups of objects that can store values:
•
Fields
• Parameters
• Variables
Jaspersoft Studio uses these objects in data source queries. In order to use these objects in a report, they must be declared with a discrete type that corresponds to a Java class, such as
String or
Double
. After they have been declared in a report design, the objects can be modified or updated during the report generation process.
This chapter contains the following sections:
•
•
Registration of Fields from a SQL Query
•
Registration of JavaBean Fields
•
6.1
Understanding Fields
A print is commonly created starting from a data source that provides a set of records composed of a series of fields. This behavior is exactly like obtaining the results of an SQL query.
Jaspersoft Studio displays available fields as children of the Fields node in the document outline view. To create a field, right-click the Fields node and select Create Field. The new field is included as an undefined entry on the Properties tab. You can configure the field properties by selecting it.
Select the Object tab to name your field, enter a description, and choose a class.
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Figure 6-1 Object Tab in Properties View of a Field
Select the Advanced tab to enter advanced properties for the field.
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Figure 6-2 Advanced Tab in Properties View of a Field
A field is identified by a unique name, a type, and an optional description. You can also define a set of name/value pair properties for each field. These custom properties are not generally used by JasperReports, but they can be used by external applications or by some custom modules of JasperReports (such as a special query executor).
Jaspersoft Studio determines the value for a field based on your data source. For example, when using an SQL query to fill a report, Jaspersoft Studio assumes that the name of the field matches the name of a field in the query result set. You must ensure that the field name and type match the field name and type in the data source.
You can systematically declare and configure large numbers of fields using the tools provided by Jaspersoft
Studio. Because the number of fields in a report can be quite large (possibly reaching the hundreds), Jaspersoft
Studio provides different tools for handling declaration fields retrieved from particular types of data sources.
Inside each report expression (like the one used to set the content of a textfield) Jaspersoft Studio specifies a field object, using the following syntax:
$F{<field name>} where
<field name>
must be replaced with the name of the field. When using a field expression (for example, calling a method on it), keep in mind that it can have a value of null
, so you should check for that condition.
An example of a Java expression that checks for a null value is:
($F{myField} != null) ? $F{myFiled}.doSomething() : null
This method is generally valid for all the objects, not just fields. Using Groovy or JavaScript this is rarely a problem, since those languages handle a null value exception in a more transparent way, usually returning an empty string.
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In some cases a field can be a complex object, like a JavaBean, not just a simple value like a String or an
Integer. A trick to convert a generic object to a String is to concatenate it to an empty string this way:
$F{myfield}+ “”
All Java objects can be converted to a string; the result of this expression depends on the individual object implementation (specifically, by the implementation of the toString() method). If the object is null, the result returns the literal text string “ null
” as a value.
6.2
Registration of Fields from a SQL Query
An SQL query is the most common way to fill a report. Jaspersoft Studio provides several tools for working with SQL, including a query designer and a way to automatically retrieve and register the fields derived from a query in the report.
Before opening the query dialog, be sure you select the correct connection/data source. All operations performed by the tools in the query dialog use this data source.
) right-click the name of your report in the Outline view and choose
Dataset and Query....
Figure 6-3 Query Dialog
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Jaspersoft Studio doesn't require a query to generate a report. It can obtain data from a data source that is not defined by a query execution. JasperReports supports multiple query languages including:
• CQL
•
HiveQL
•
JSON
• MongoDBQuery
• PLSQL
•
SQL
•
XLS
• XPath
If the selected data source is a JDBC connection, Jaspersoft Studio tests the access connection to the data source as you define the query. This allows Jaspersoft Studio to identify the fields using the query metadata in the result set. The design tool lists the discovered fields in the bottom portion of the window. For each field,
Jaspersoft Studio determines the name and Java type specified by the JDBC driver.
If your query accesses tables containing large amounts of data, scanning the data source for field names could take a while. In this case you might consider disabling the Automatically Retrieve Fields option to quickly finish your query definition. When you've completed the query, click the Read Fields button to start the fields discovery scan.
All fields used in a query must have a unique name. Use alias field names in the query for fields having the same name.
The field name scan may return a large number of field names if you are working with complex tables. To reduce unnecessary complexity, we suggest that you review the list of discovered names and remove fields you're not using in your report.When you click OK all the fields in the list are included in the report design.
Although you can remove them later in the outline view, it’s a good idea at this point in the design process to remove any field names that you won’t be using.
6.3
Registration of JavaBean Fields
One of the most advanced features of JasperReports is its ability to manage data sources that aren't based on simple SQL queries. One example of this is JavaBean collections. In a JavaBean collection, each item in the collection represents a record. JasperReports assumes that all objects in the collection are instances of the same
Java class. In this case the “fields” are the object attributes (or even attributes of attributes).
By selecting the Java Bean tab in the query designer, you can register the fields that correspond to the specified Java classes. We assume you know the Java classes that correspond to the objects that you use in your report.
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Figure 6-4 JavaBeans Tab
Suppose you're using objects of this Java class: com.jaspersoft.ireport.examples.beans.PersonBean
To register fields for the class:
1.
Put the class name in the name field and click Read attributes. Jaspersoft Studio scans the class.
2.
Check the scan results to make sure Jaspersoft Studio has captured the correct object attributes for the class type.
3.
Select the fields you want to use in your report and click Add.
Jaspersoft Studio creates new fields corresponding to the selected attributes and adhesion to the list. The description, in this case, stores the method that the data source must invoke to retrieve the value for the specified field.
Jaspersoft Studio parses a description such as address.state
(with a period between the two attributes) as an attribute path. This attribute path is passed to the function getAddress() to locate the target attribute, and then to getState() to query the status of the attribute. Paths may be arbitrary and long, and Jaspersoft Studio can recursively parse attribute trees within complex JavaBeans and in order to register very specific fields.
We have just discussed the two tools used most frequently to register fields, but we’re not done yet. There are many other tools you can use to discover and register fields, for instance, the HQL and XML node mapping tools.
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6.4
Fields and Textfields
To print a field in a text element, you must set the expression and the textfield class type correctly. You may also need to define a formatting pattern for the field.
To create a corresponding textfield, drag the field you want to display from the Outline view into the design panel. Jaspersoft Studio creates a new textfield with the correct expression (for example,
$F{fieldname}
) and assigns the correct class name.
6.5
Data Centric Exporters
Jaspersoft® Studio supports two data-oriented export formats designed to be used programmatically when another application embeds TIBCO Jaspersoft products:
•
CSV: exports the report's data to a list of comma-separated values (CSV).
• JSON: exports the report's data to a JavaScript Object Notation (JSON) object.
In both cases, the metadata defines the structure of the exported data.
Jaspersoft Studio also supports other types of field-level metadata:
•
PDF 508 Tags are used to create report output in Adobe Acrobat format that provides functionality in accordance with the Americans with Disabilities 508 specification.
• XLS Tags are used to define how data is exported to the Microsoft Excel format. In addition to numerous layout settings, you can define XLS metadata that define the structure of the data when exported.
This section describes how to work with metadata for PDF 508 Tags and for the JSON exporter.
6.5.1
Configuring a Report's Metadata for PDF 508 Tags
To add 508 functionality to a report, you must add tags to the report elements. Jaspersoft® Studio has menu items that let you explicitly insert tags for headings, tables, and table-like elements. For more information about tags for 508 functionality in JasperReports® Library, see the JasperReports® Library Ultimate Guide.
6.5.1.1 Tagging Headings
You can tag text fields or static text elements as headings. You can include a range of static text elements and/or text fields in the same heading.
To tag a single element as a heading:
1.
Right-click the text field or static text and select PDF 508 Tags > Heading > Heading n > Full from the context menu.
The setting is displayed in the upper left-hand corner of the element in design view. It is underlined to show the element is the full heading.
Figure 6-5 A static text element tagged as Full
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To tag multiple elements as a heading:
1.
Right-click the first text field or static text element in your heading section and select PDF 508 Tags >
Heading > Heading n > Start from the context menu.
2.
Right-click the last text field or static text element in your heading section and select PDF 508 Tags >
Heading > Heading n > End from the context menu.
In design view, the start of a multi-element heading is shown in the upper left-hand corner of the Start element, and the end is shown in the lower right-hand corner of the End element.
Figure 6-6 Text fields tagged as start and end
To remove a heading tag from an element:
1.
Right-click the text field or static text element in your heading section and select PDF 508 Tags >
Heading > Heading n > None from the context menu.
6.5.1.2 Using Automatic Table Tagging
In version 6.2, we added the net.sf.jasperreports.components.table.generate.pdf.tags
property.
When this property is enabled, tags are automatically generated for the tables in your report. This property can be set at the global, report, or table level.
To set this property globally:
1.
Select Window > Preferences to open the Preferences dialog box.
2.
Navigate to Jaspersoft Studio > Properties.
3.
Click Add to open the Properties dialog.
4.
Enter the following values:
• Property Name – net.sf.jasperreports.components.table.generate.pdf.tags
• Value – Enter true to enable table tagging or false to disable table tagging.
Setting the property globally inserts tags when you export a report to PDF directly from Jaspersoft®
Studio. If you are publishing your reports to another environment, such as JasperReports® Server, you must enable this property in the jasperreports.properties file in your environment. See the
JasperReports® Server Administrator Guide for more information about enabling this property for
JasperReports® Server.
To set this property for a report or table:
1.
For a table, right-click in the table. For a report, right-click on the root node in outline view.
2.
Select PDF 508 Tags > Autotag Table from the context menu.
3.
Select one of the following options:
• Default – Inherits the property settings from a higher level. If the property has been set explicitly at a higher level, the current setting is shown on the menu, for example Default (Enabled).
• Enabled – Enables the property for this table or report. This setting overrides any value set at a higher level.
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• Disabled – Disables the property for this table or report. This setting overrides any value set at a higher level.
When the net.sf.jasperreports.components.table.generate.pdf.tags
is set at the table level, the setting is displayed in the upper left-hand corner of the table in design view.
Figure 6-7 Table with tagging enabled
6.5.1.3 Manually Tagging Tables and Lists
Automatic table tagging only works with table elements. If you have a table-like element in your report, such as a list or a tabular arrangement of fields, it cannot be tagged automatically. However, you can manually insert list or table tags using the context menu. Like tables, manual tagging only works with text fields and static text.
You manually tag lists and tables using a CSS-type structure. The general steps necessary to tag tables are shown.
To manually tag a tabular arrangement of elements as a table:
1.
Tag the first element in your table: PDF 508 Tags > Table > Start.
2.
Tag the start and end of each row: a.
Tag the first element in your row: PDF 508 Tags > Table Row > Start.
b.
Tag the last element in your row: PDF 508 Tags > Table Row > End.
3.
To make a row a header row, add header tags to the start and end: a.
Tag the first element in each header row: PDF 508 Tags > Table Header > Start.
b.
Tag the last element in each header row: PDF 508 Tags > Table Header > End.
4.
Tag each detail element in each row: PDF 508 Tags > Table Details > Full.
5.
Tag the final element in your table: PDF 508 Tags > Table > End.
To manually tag elements as a list:
1.
Tag the first element in your list: PDF 508 Tags > List > Start.
2.
Tag each list item: PDF 508 Tags > List Item > Full.
3.
Tag the final element in your list: PDF 508 Tags > List > End.
6.5.1.4 Setting Export Parameters
Once you have inserted your 508C tags correctly, you must set the PDF export parameters in your report.
1.
Click on the report preview.
2.
The first time the report runs, it will not have tags. To speed up the initial run, select One Empty Record.
3.
Select PDF from the format menu and wait for the report to run.
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If necessary, click to open the panel on the left of the preview window.
5.
Click to view the exporter parameters.
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Figure 6-8 PDF Export Parameters tab in report preview
6.
Select Is Tagged.
7.
Enter a language code in the Tag Language field.
Figure 6-9 508C tags in PDF Export Parameters tab
8.
Select the correct data adapter and run your report.
6.5.2
Configuring a Report's Metadata for Use With the JSON Data Exporter
JasperReports® Server's REST API includes a JSON (JavaScript Object Notation) data exporter that enables you to feed pure data into applications you integrate with the server. During report generation, this exporter skips all layout-related steps and returns a dataset. The structure of this data is determined by metadata you define in your report. You can also define expressions to determine how data from a specific filed is exported.
Note: The ability to define metadata and export data in JSON format is sometimes referred to as the
JasperReports Data API.
You can define a structure by separating the names of the levels you want to create with periods (.). For example, consider a report with three fields configured with these JSON properties:
Field Expression
$F{salesamount}
$F{salesyear}
$F{cust.name}
JSON Path store.sale.amount
store.sale.year
store.cust.name
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When exported to JSON, the data is structured with three distinct paths: store sale amount year cust name
Example exported data would be similar to:
[
{store:
[
{
} sale:[{amount:"19000", year:2014}], cust:[{name:"Acme"}],
}
]
]
Note that when you preview your report as JSON, the data is not formatted to be human readable, as above.
You may want to use one of the many JSON formatting tools to review the output of your JSON tagged report, you can copy the JSON output from the Preview tab.
It's important to define paths that create a structure that the application receiving the data can interpret.
To define JSON export object metadata in your report:
1.
Open a report that includes the fields you want to export to your application.
2.
Right-click a field in the Design tab, and select JSON tags > JSON Metadata Path.
If the field you selected appears in a frame, you're warned that JasperReports® Library may ignore the property. This warning relates only to older versions of the library; it remains in the product for backwardscompatibility. For current versions of JasperReports® Server, JasperReports® Server, and Jaspersoft® Studio, properties defined in frames aren't ignored.
3.
If you receive this warning, click OK. The JSON Exporter Property Configuration window appears.
4.
In the Path field, enter a string that specifies the way the data from this field should be exported. For example, if you are working with a field that returns a sales amount value, you might enter store.sale.amount.
5.
If the data being returned necessitates it, check the Repeat value if missing check box.
This option is helpful if your source data doesn't include values for every row of data returned. Selecting this option instructs Jaspersoft® Studio to simply use the last value passed when a value is missing, which may prevent problems in the application receiving the JSON object.
6.
If you want to manipulate the data being exported, check the Use custom expression for exported
value check box, click
, and define an expression.
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7.
Click OK.
8.
Select each field you want to export to JSON and define its metadata.
9.
Click File > Save.
10. Click Preview.
11. If the JSON Metadata preview isn't selected, click the arrow next to the current preview format, and select
JSON Metadata.
Figure 6-10 Selecting the JSON Metadata Preview
12. Review the structure of the data to ensure your application can interpret it.
13. If the data isn't structured correctly, click Design and edit each field's JSON export properties.
14. When you're satisfied with the data returned by Jaspersoft® Studio, you can publish your report to
JasperReports® Server and begin testing your own application's ability to use the data passed by the server.
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7 R
EPORT
T
EMPLATES
Templates are one of the most useful tools in Jaspersoft Studio. You can use the provided templates as the basis for new reports. You can also use a template as a model and add fields, text fields, and groups in the Report
Wizard.
This chapter explains how to build custom templates that will appear in the Template Chooser. It has the following sections:
•
•
Creating and Customizing Templates
•
•
Adding Templates to Jaspersoft Studio
7.1
Template Structure
A template is a JRXML file. When you create a new report, Jaspersoft Studio loads the selected template's
JRXML file with any modifications you've specified in the wizard. If you don't use the wizard, your template is just copied along with all the referenced images in the location the you've specified.
When you launch the Report Template dialog (File > New > Jasper Report) scans all paths specified as template directories. Any valid JRXML files found are included in the Report Template dialog. If a template provides a preview image, the image is displayed. Otherwise, a white box appears.
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Figure 7-1 Default Report Templates
A template contains all or some of the same parts as a report. Remember the following when creating a new template or editing an existing template:
• A report's page formatting is the page formatting of its template.
•
Each band in a report is, by default, the same size as that band in its template.
•
Every element placed in the Summary, Title, Page Header and Page Footer bands, of a template appears in every report that uses that template.
• The Column Header band should contain only a Static Text element, and its text content must be
Label
.
The appearance, font and the other attributes of this label create every label inserted in this band.
•
The Group Header band should contain only a Text Field with the string
“GroupField”
(including the double quotes). As with the Column Header this assumes an example to generate every field that goes in this band.
• The Detail band should contain only a Text Filed with the string “
Field
” (including the double quotes).
Again, this is used to generate every field that goes in this band.
When you group data using the wizard, the wizard creates all the necessary report structures to produce your groups. The Report Wizard supports up to four groups, with a group header and group footer associated with each. If the template defines one or more groups and you group the data, the wizard tries to use any existing groups before creating new ones. By default, groups in the template are deleted if they're not used. For each group, the wizard sets the group expression and adds a label for the name and a text field showing the value of the group expression (which is always a field name, because the grouping criteria set using the wizard is one of the selected fields).
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7.2
Creating and Customizing Templates
You can create templates from scratch or edit existing templates and save them as new templates.
7.2.1
Creating a New Template
If you want to start fresh with your template, create a new one.
To create a new template:
1.
Go to File > New > Jasper Report to launch the New Report Wizard.
2.
Select a template to start. Click Blank Letter and Next.
3.
Choose where you want to store the file, name the new template, and click Next.
For creating a template, there is no need to connect to a data source.
4.
Select One Empty Record - Empty rows and click Finish.
Figure 7-2 One Empty Record Data Source
An empty report opens, containing the following bands:
• Title
• Page Header
•
Column Header
•
Detail
• Column Footer
• Page Footer
•
Summary
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5.
Right-click on the report root node in the Outline, and select Create Group. The Group Band dialog appears.
Figure 7-3 Group Band Dialog
6.
Name your group and click Next. The Group Layout dialog appears.
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Figure 7-4 Group Layout Dialog
7.
Leave both Add the Group Header and Add the Group Footer checked, and click Finish.
Your report is similar to the one in
.
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Figure 7-5 Report Containing Group Header and Footer
7.2.2
Customizing a Template
Now that you have a blank template, you can customize it to suit your preference. For example, you can add your company name and logo, page numbering, add a background for your report, and set band and column sizes. You also use this procedure to make changes to an existing template.
To customize a template:
1.
Add a graphic: Drag an Image element where you want the image to appear. This is usually the Title band.
For more information about the Image element, see
2.
Add a title: Drag a Static Text element to the Title band. Style the text in the Properties view. For more information about Static Text elements, see
3.
Want the background to cover the entire page? Right-click the element in the Outline and choose
Maximize Band Height. Otherwise, set the Background band to the size you want. Drag an Image element into the Background band to create your background.
4.
Add page numbering to the Page Footer band: Drag a Page Number element into the band, and place it where you want it. You can also add a Page X of Y element if you prefer.
5.
Want a label in the Column Header band? Add a Static Text element with the text “Label”.
6.
Set styles for your report’s text: Add a Text field to the Group Header and a Text field to the Detail band.
Set the text of the first Text field to
“GroupField” and the text of the second Text field to
“Field”
.
Format the text as you like.
7.
Save your template file.
8.
Click the Preview tab. Your template should like something like the one in
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Figure 7-6 Template Preview
7.3
Saving Templates
Jaspersoft Studio templates require a flat folder structure (resources and report in the same folder). This way, when you export a template, the paths and resources in the exported report point to the same directory.
7.3.1
Creating a Template Directory
You can specify one ore more directories for your custom templates.
1.
Go to Window > Preferences > Jaspersoft Studio > Templates Locations.
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Figure 7-7 Template Location Preferences
2.
Click the New... button and navigate to the directory in which you want to store your template.
3.
Click the Apply button.
4.
Click OK.
7.3.2
Exporting a Template
Save your template for future use.
1.
Go to File > Export as Report Template. The Template Export dialog opens.
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Figure 7-8 Template Export Dialog
2.
Click the Browse button and navigate to the directory where you want to save your template. Click Next.
The Define Type and Categories dialog opens.
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Figure 7-9 Define Type and Categories Dialog
3.
In the drop-down, choose whether the template type is a Standard Report or a Table-Based report.
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This selection is used to validate the report. For example. by selecting Standard Report, the validation process searches for the group field with the text group or for the column header label with the text label. If any of the required fields are not found, an error message is displayed.
4.
Select the categories for the template available and use the arrow button to add them to the Selected
Categories.
5.
Click Finish.
7.3.3
Creating a Template Thumbnail
Saving a thumbnail is not required, but can be helpful if more than one person uses your templates.
1.
Go to the Preview tab.
2.
Click the Export Image button.
3.
Save the image in the same directory and with the same name as your template.
7.4
Adding Templates to Jaspersoft Studio
Once you've created a custom template, you need to add it to Jaspersoft Studio to use it.
To add a template to Jaspersoft Studio:
1.
Go to Window > Preferences > Jaspersoft Studio > Templates Locations.
Figure 7-10 Template Location Preferences
2.
Navigate to the directory in which you stored your template.
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3.
Click Apply.
4.
Click OK.
When you go to File > New > Jasper Report, your new template appears, along with the default templates.
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C
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8 U
SING
P
ARAMETERS
Parameters are values usually passed to the report from the application that originally requested it. They can be used for configuring report features at generation (like the value to use in an SQL query), or maybe to supply additional data to the report that's not provided by the data source (like a custom report title, an applicationspecific path for images).
Report parameters have many functions in a report. They can be used in the "where" condition of an SQL query, or to provide additional data to the report (like the value of a title or name of the user that executed the report).
A parameter is defined by a name and a Class, which is a Java class type. For example a parameter of type java.sql.Connection may be used to populate a subreport, while a simple java.lang.Boolean parameter may be used to show or hide a section of the report.
This chapter contains the following sections:
•
•
•
•
8.1
Managing Parameters
Parameters are the best communication channel between the report engine and the execution environment (your application).
A parameter can have a default value defined by means of the default expression property. This expression is evaluated by JasperReports only when a value for the parameter has not been provided by the user at run time.
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Figure 8-1 Parameters in Outline View
To manage parameters, use the outline view. Add a parameter by right-clicking on the item Parameters and choosing Create Parameter. To delete a parameter from the outline view right click on it and select Delete.
The parameters with light gray names are created by the system and can not be deleted or edited.
Right-click any parameter and choose Show Properties to view and edit the properties of the parameter.
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Figure 8-2 Parameters - Advanced Properties
The Default Value Expression field allows you to set a pre-defined value for the parameter. This value is used if no value is provided for the parameter from the application that executes the report. The type of value must match the type declared in the Class field.
You may legally define another parameter as the value of Default Value Expression, but this method requires careful report design. Jaspersoft Studio parses parameters in the same order in which they are declared, so a default value parameter must be declared before the current parameter.
The parameter Description is not used directly by JasperReports, but like the Is for Prompting, may be passed to an external application.
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As with fields, you may specify pairs of type name/value as properties for each parameter. This is a way to add extra information to the parameter for use by external applications. For example, the designer can use properties to include the description of the parameter in different languages or perhaps add instructions about the format of the input prompt.
8.2
Default Parameters
JasperReports provides some built-in parameters (internal to the reporting engine). You can read the built-in parameters, but you can't modify or delete them. Some important built-in parameters are:
•
REPORT_CONNECTION
- For a report using JDBC, this parameter holds the JDBC connection used to run the
SQL query.
•
REPORT_DATA_SOURCE
- This parameter contains the data source used to fill the report (if available)
•
REPORT_LOCALE
- This parameter contains the Locale used to fill the report.
Some built-in parameters are specific to a query language. For example if you're using the Hibernate query language, the reports automatically includes the
HIBERNATE_SESSION parameter that holds the Hibernate session for the HQL query.
The built-in parameters are:
Table 8-1 JasperReports Default Parameters
Description Parameter
REPORT_CONTEXT
REPORT_PARAMETERS_MAP This is the java.util.Map passed to the fillReport method; it contains the parameter values defined by the user.
JASPER_REPORT
REPORT_CONNECTION
REPORT_MAX_COUNT
REPORT_DATA_SOURCE
REPORT_SCRIPTLET
REPORT_LOCALE
REPORT_RESOURCE_BUNDLE
This is the JDBC connection passed to the report when the report is created through an SQL query.
This is limits the number of records filling a report. If no value is provided, no limit is set.
This is the data source used by the report when it's not using a JDBC connection.
This represents the scriptlet instance used during report creation. If no scriptlet is specified, this parameter uses an instance of net.sf.jasperreports.engine.JRDefaultScriptlet
.
This is specifies the locale used to fill the report. If no locale is provided, the system default is used.
This is the resource bundle loaded for this report.
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Parameter
REPORT_TIME_ZONE
REPORT_FORMAT_FACTORY
REPORT_CLASS_LOADER
REPORT_URL_HANDLER_
FACTORY
REPORT_FILE_RESOLVER
Description
This is used to set the time zone used to fill the report. If no value is provided, the system default is used.
This is an instance of a net.sf.jasperreports.engine.util.FormatFactory
. The user can replace the default one and specify a custom version using a parameter.
Another way to use a particular format factory is by setting the report property format factory class.
This parameter can be used to set the class loader to use when filling the report.
Class used to create URL handlers. If specified, it replaces the default.
This is an instance of net.sf.jasperreports.engine.util.FileResolver
used to resolve resource locations that can be passed to the report in order to replace the default implementation.
This is an optional collection of styles (JRTemplate) that can be used in addition to those defined in the report.
REPORT_TEMPLATES
SORT_FIELDS
FILTER
REPORT_VIRTUALIZER
IS_IGNORE_PAGINATION
This defines the class for the report filler that implements the
JRVirtualizer interface for filling the report.
You can switch the pagination system on and off with this parameter (it must be a Boolean object). By default, pagination is used except when exporting to HTML and Excel formats.
8.3
Using Parameters in Queries
Generally, you can use parameters in a report query whether or not the language supports them.
JasperReports executes queries, passing the value of each parameter used in the query to the statement.
This approach has a major advantage with respect to concatenating the parameter value to the query string—you don't have to take care of special characters or sanitize your parameter. The database can do it for you. At the same time, this method limits your control of the query structure. For example, you can't specify a portion of a query with a parameter.
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8.3.1
Using Parameters in a SQL Query
You can use parameters in SQL queries to filter records in a where condition or to add/replace pieces of raw
SQL or even to pass the entire SQL string to execute.
In the first case the parameters act as standard SQL parameters. For example:
SELECT * FROM ORDERS WHERE ORDER_ID = $P{my_order_id}
In this example the my_order_id parameter contains the ID of the order to be read. This parameter can be passed to the report from the application running it to select only a specific order. Please note that the parameter here is a valid SQL parameter, meaning that the query can be executed using a prepared statement like:
SELECT * FROM ORDERS WHERE ORDER_ID = ?
and the value of the parameter my_order_id is then passed to the statement.
In this query:
SELECT * FROM ORDERS ORDER BY $P!{my_order_field} my_order_field cannot be treated as an SQL parameter. JasperReports considers this parameter a placeholder
(note the special syntax
$P!{}) is replaced with the text value of the parameter.
Using the same logic, a query can be fully passed using a parameter. The query string would look like:
$P!{my_query}
A query can contain any number of parameters. When passing a value using the
$P!{} syntax, the value of the parameter is taken as is, the user is responsible of the correctness of the passed value (SQL escaping is not performed by JasperReports in this case). When using a parameter in a query, a default value must be set for the parameter to allow Jaspersoft Studio to execute the query to retrieve the available fields.
8.3.2
Using Parameters with Null Values
The parameter form
$P{parametername} doesn't work correctly with null values. In an operation in which your value could be null, use the form
$X{EQUAL,fieldname,parametername}
.
For example:
1.
$P{param}: "select * where num_column > $P{num_param}"
In this case $P should be used, because we don't have $X{GREATER,…}, and Null has no meaning for the operation “greater than”.
2.
$X{EQUAL, column_name, param_name}
Let's compare two expressions:
" select * where num_column = $P{num_param}" and
"select * where $X{EQUAL, num_column, num_param}"
Both generate the same output if parameter value is not Null:
"select * where num_column = 1"
However, if the parameter has a Null value the output is different:
•
$P
:
"select * where num_column = null"
•
$X
:
"select * where num_column IS null"
Databases don't understand the key difference
"= null"
, but
"is null"
. So if you want your query with the condition "=" to work with null values, you need to use
$X{EQUAL/NOTEQUAL, column, parameter}
.
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8.3.3
IN and NOTIN Clauses
JasperReports provides a special syntax to use with a where condition: the
IN and
NOTIN clauses.
The
IN clause checks whether a particular value is present in a discrete set of values. Here is an example:
SELECT * FROM ORDERS WHERE SHIPCOUNTRY IS IN ('USA','Italy','Germany')
The set here is defined by the countries USA, Italy and Germany. Assuming we are passing the set of countries in a list (or better a java.util.Collection
) or in an array, the syntax to make the previous query dynamic in reference to the set of countries is:
SELECT * FROM ORDERS WHERE $X{IN, SHIPCOUNTRY, myCountries} where myCountries is the name of the parameter that contains the set of country names. The
$X{} clause recognizes three parameters:
•
Type of function to apply (
IN or
NOTIN
)
• Field name to be evaluated
(SHIPCOUNTRY
)
• Parameter name ( myCountries
)
JasperReports handles special characters in each value. If the parameter is null or contains an empty list, meaning no value has been set for the parameter, the entire
$X{} clause is evaluated as the always true statement “
0 = 0
”.
8.3.4
Relative Dates
You can create a report that filters information based on a date range relative to the current system date using a parameter of type
DateRange
. A date range parameter can take either a date or a text expression that specifies a date range relative to the current system date.
A relative date expression is always calculated in the time zone of the logged-in user. However, the start day of the week can be configured independent of locale.
8.3.4.1 Relative Date Keywords
The text expression for the relative date must be in the format
<Keyword>+/-<N> where:
•
<Keyword>
– Specifies the time span you want to use. Options include:
DAY
,
WEEK
,
MONTH
,
QUARTER
,
SEMI
, and
YEAR
.
•
<+/->
– Specifies whether the time span occurs before (-) or after (+) the chosen date.
•
<N>
– Specifies the number of the above-mentioned time spans you want to include in the filter.
For example, if you want to look at Sales for the prior month, your expression would be
MONTH - 1
.
Relative dates don't currently support keywords like "Week-To-Date" (from the start of the current week to the end of the current day). However, you can set a relative date period in a query in JRXML using
BETWEEN
, which has the syntax:
$X{BETWEEN, column, startParam, endParam}
For example, to create a week-to-date query, set startParam to WEEK and endParam to DAY. You can do this for other time ranges, such as Year-To-Day, Year-To-Week, and so forth.
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8.3.4.2 Creating a Date Range Parameter
The class attribute of a JasperReports date range parameter must have one of the following values:
• net.sf.jasperreports.types.date.DateRange
(Date only) – Accepts text strings with relative date keywords as described above and date strings in YYYY-MM-DD format. For example:
<parameter name="myParameter" class="net.sf.jasperreports.types.date.DateRange">
• net.sf.jasperreports.types.date.TimestampRange
(Date and Time) – Accepts text strings with relative date keywords as described above and date strings in YYYY-MM-DD HH:mm:ss format. For example:
<parameter name="myParam" class="net.sf.jasperreports.types.date.TimestampRange">
8.3.4.3 Using Date Ranges in Queries
You must use
$X{} functions with date ranges, because
$P{} does not support the date-range types (
DateRange and
TimestampRange
).
To use date ranges, create a parameter with type date range and use it as the third argument in the $X{} function. To set the default value expression of a date range parameter, use the
DateRangeBuilder() class to cast the expression to the correct type:
• new net.sf.jasperreports.types.date.DateRangeBuilder("DAY-1").toDateRange()
– casts a keyword text string to a
DateRange
.
• new net.sf.jasperreports.types.date.DateRangeBuilder("WEEK").set(Timestamp.class).toDateRange()
– casts a keyword text string to a
TimestampRange
.
• new net.sf.jasperreports.types.date.DateRangeBuilder("2012-08-01").toDateRange()
– casts a date in
YYYY-MM-DD format to a
DateRange
.
• new net.sf.jasperreports.types.date.DateRangeBuilder("2012-08-01 12:34:56").toDateRange()
– casts a date in YYYY-MM-DD HH:mm:ss format to a
TimestampRange
.
The following JRXML example shows data from the previous day:
<parameter name="myParameter" class="net.sf.jasperreports.types.date.DateRange">
<defaultValueExpression>
<![CDATA[new DateRangeBuilder("DAY-1").toDateRange()]]>
</defaultValueExpression>
</parameter>
<queryString>
<![CDATA[Select * from account where $X{EQUAL, OpportunityCloseDate, myParameter}]]>
</queryString>
This JRXML example shows results prior to the end of last month:
<parameter class="net.sf.jasperreports.types.date.DateRange" name="EndDate">
<defaultValueExpression>
<![CDATA[new net.sf.jasperreports.types.date.DateRangeBuilder("MONTH-1").toDateRange().getEnd()]]>
</defaultValueExpression>
</parameter>
<queryString>
<![CDATA[SELECT * FROM orders WHERE $X{LESS, order_date, EndDate}]]>
</queryString>
The following table shows two additional examples of relative dates.
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Problem Solution
Set up a relative date parameter called StartDate that takes the value: QUARTER. QUARTER evaluates to the first day (the first instant, really) of this quarter.
Find all purchases made previous to this quarter
SQL: select * from orders where $X{LESS, order_date,
StartDate}
Find all purchases made in this quarter select * from orders where $X{EQUAL, order_date, StartDate}
8.3.4.4 Using Relative Dates in Input Controls
When you create an input control for a
DateRange or
TimestampRange parameter, the user can either type a relative date expression or enter a specific date (either by typing or by using the calendar widget).
Use
BETWEEN to set up input controls that allow the user to specify a range (other than a day) using either a relative date expression or actual dates. To do this:
• Define two date range parameters, for example,
StartDate and
EndDate
.
•
Optionally, set default values for one or both parameters using defaultValueExpression
.
•
Use a
$X{} expression with a
BETWEEN function in your query.
• Create a date type input control for each parameter, for example,
StartDate and
EndDate
.
The following JRXML example uses the
BETWEEN keyword in the
$X() function to find all data from the previous 20 years:
<parameter name="StartDate" class="net.sf.jasperreports.types.date.DateRange">
<defaultValueExpression>
<![CDATA[(new net.sf.jasperreports.types.date.DateRangeBuilder("YEAR-20")).toDateRange()]]>
</defaultValueExpression>
</parameter>
<parameter name="EndDate" class="net.sf.jasperreports.types.date.DateRange">
<defaultValueExpression>
<![CDATA[(new net.sf.jasperreports.types.date.DateRangeBuilder("DAY")).toDateRange()]]>
</defaultValueExpression>
</parameter>
<queryString language="SQL">
<![CDATA[select HIRE_DATE, MANAGEMENT_ROLE, GENDER, SUPERVISOR_ID,SALARY from employee where
$X{BETWEEN, HIRE_DATE, StartDate, EndDate} limit 200]]>
</queryString>
You can use the getStart() and getEnd() methods to get the precise beginning and end of a relative date.
Both of these methods return a date instead of a date range. The following example shows how to get the precise start date as a default value expression:
<parameter name="StartDate" class="java.util.Date" nestedType="java.util.Date">
<defaultValueExpression><![CDATA[$P{UserPeriod}.getStart()]]></defaultValueExpression>
</parameter>
8.3.4.5 Publishing Reports with Relative Dates to JasperReports Server
Jaspersoft Studio automatically enables support for date range expressions on connections to JasperReports
Server 5.0 and higher. To verify that date range expressions are enabled:
1.
Right-click on the server connection in the Repository and select Edit.
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2.
In the Server profile wizard, display the Advanced settings and select Supports DateRange
Expressions.
When Supports DateRange Expressions is enabled, input controls for date range parameters work correctly when published to JasperReports Server.
8.3.5
Passing Parameters from a Program
Jaspersoft Studio passes parameters from a program “caller” to the print generator using a class that extends the java.util.Map
interface. For example:
...
HashMap hm = new HashMap();
...
JasperPrint print = JasperFillManager.fillReport( fileName, hm, new JREmptyDataSource());
...
fillReport is a key method that allows you to create a report instance by specifying the file name as a parameter, a parameter map, and a data source. (This example uses a dummy data source created with the class
JREmptyDataSource and an empty parameter map created using a java.util.HashMap
object.)
Let’s see how to pass a simple parameter to a reporting order to specify the title of a report.
The first step is to create a parameter in the report to host the title (that is a String). We can name this parameter
REPORT_TITLE and the class is java.lang.String
Figure 8-3 Definition of
REPORT_TITLE
All the other properties can be left as they are. Drag the parameter into the Title band to create a text field to display the
REPORT_TITLE parameter.
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Figure 8-4 Design Panel with
REPORT_TITLE in the Title Band
To set the value of the
REPORT_TITLE parameter in our application, modify the code of the previous source code example by adding:
...
HashMap hm = new HashMap(); hm.put(“REPORT_TITLE”,”This is the title of the report”);
...
JasperPrint print = JasperFillManager.fillReport( fileName, hm, new JREmptyDataSource());
...
We have included a value for the
REPORT_TITLE parameter in the parameter map. You don't need to pass values for all the parameters. If you don’t provide a value for a certain parameter, JasperReports assigns the value of
Default Value Expression to the parameter with the empty expression evaluated as null.
When printing the report, Jaspersoft Studio includes the String
This is the title of the report in the
Title band. In this case we just used a simple String. But you can pass much more complex objects as parameters, such as an image ( java.awt.Image
) or a data source instance configured to provide a specified subreport with data. The most important thing to remember is that the object passed in the map as the value for a certain parameter must have the same type (or at least be a super class) of the type of the parameter in the report. Otherwise, Jaspersoft Studio fails to generate the report and returns a
ClassCastException error.
8.4
Parameters Prompt
If you set a parameter to be used as a prompt, when executing the report, Jaspersoft Studio asks for the value of the parameter.
To create a parameter prompt:
Create a simple report with the template Blank A4, name
ParameterExample and data adapter One
Empty Record - Empty Rows.
1.
In this report create a parameter and rename it (from its Properties view) to
MESSAGE
, with type java.lang.String
, and select the Is For Prompting) checkbox.
2.
Drag the parameter from the outline view into the Title band. Jaspersoft Studio creates a text field to display the parameter value. You should have something like the following image.
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Figure 8-5 Parameter in Title Band
To compile and preview the report:
1.
Click the Preview tab.
Be sure the Input Parameter window is open. If not, click the gray right-arrow to the left of the Preview screen.
2.
Add a value for the
MESSAGE parameter. For this example, type
Parameter Example
.
3.
Press the Play button. The message is printed in the title band.
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Figure 8-6 Preview Tab with Parameter Value
Jaspersoft Studio provides input dialogs for parameters of type String, Date, Time, Number, and Collection.
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9 V
ARIABLES
You can use variables to store partial results and do complex calculations with the data extracted from a data source. You can then use these values in other parts of the report, including other variables.
This chapter contains the following sections:
•
Defining or Editing a Variable
•
•
Other Properties of a Variable
•
•
9.1
Defining or Editing a Variable
As with many other elements, all defined variables are visible in the Outline view, where you can create a new variable and edit its properties in the Properties view.
To define a new variable:
1.
In the Outline view, right click the Variables item and select Create Variable. A new variable is added to the list of variables.
2.
Click to select the new variable. The Properties view shows information about the new variable.
3.
In the Properties view, click the Object tab.
4.
Update the variable properties. See
“Base Properties of a Variable” on page 141
for information on these options.
Jaspersoft Studio has some built-in variables that are present in every report. These variables can't be edited.
You'll notice their names are light gray; other variables are black. For more information see
9.2
Base Properties of a Variable
At a minimum, all variables must have the following defined:
• Name: A string used to refer to a variable. It is necessary to use this variable inside other expressions like the evaluation of a Text Field or the computation of another variable. Use the following syntax to refer to a variable:
$V{variable_name}
.
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• Type: Necessary because a variable is an object that is probably used in other expressions, so its type must be known to be manipulated correctly.
• Expression: The function used to define the variable value, it can be composed of more fields and variables, which could be logic operators, math operators and so on. Jaspersoft Studio provides an expression editor. To open it, click the button to the right of the expression text field. The expression is evaluated on each iteration (every time a record is read from the data source). If no calculation function is defined, the result of the expression is assigned to the variable. So it's important that the result has a type compatible with the one in the variable.
• Initial Value: The value assumed from the variable at the beginning, before the first computation of its expression. The initial value is an expression itself, so it can be defined through the expression editor.
• It's not mandatory, but it's good practice to define an initial value. For example, if you have a variable called variable1 with the expression new Integer(5)
, at every iteration, the variable is assigned the integer value 5. In this context the initial value isn't important. But if you change the expression to
$V
{variable1}+5
, at every iteration the variable is incremented by 5. In this case, an initial value is necessary because if the variable1 is undefined at the first iteration, all future evaluations will break.
9.3
Other Properties of a Variable
The most complex property of a variable is its temporal value. Because its expression is evaluated at every iteration, it's important to understand which value has a variable, and at which time. This can be complicated, considering that a variable can use other variables inside its expression. For these reasons there are mechanisms that can be used to simplify the evaluation or reading of the variable value during iterations.
9.3.1
Evaluation Time
Evaluation time is not an attribute of the variable but of the elements that can use the variable in their expressions (like a Text Field). Evaluation time determines when the value of the variable should be read. A variable can potentially change value at every iteration, so a value read at one time may be different from the value read another time.
For every element using a variable in its expression, it's possible to say when to evaluate the variable. And because an expression can contain multiple variables, this parameter also influences when these variables are read.
The possible evaluation times are:
• Report: The expression is evaluated ad the end of the report.
• Page: The expression is evaluated at the end of every page of the report.
• Column: The expression is evaluated at the end of each column (for a single column report, this is the same as Page).
• Group: The expression is evaluated after the break of the specified group (available only if at least one group is defined).
• Band: The expression is evaluated after the end of the band where the element with this evaluation time is placed.
•
This is a very specific case, introduced to wait until the other elements in the band are completely created.
Typically the value of the variables are read at the start of the band. But suppose, for example, you have a subreport with an output parameter to print in the main report. To print this parameter it must be read after the subreport is computed, so the value can be printed when the band is completely created. In this case the
Band evaluation time is necessary.
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• Auto: This is used when the expression contains variables and fields that need to be evaluated at different times. The variables are evaluated at a time corresponding to their Reset Type (see below for more information), instead the fields are always evaluated at time -now. This type is useful when report elements have expressions that combine values evaluated at different times (for example, percentage out of a total).
• Now: The value of the expression is evaluated after the read of every record, so at every iteration, this is the default behavior.
9.3.2
Calculation Function
A calculation function is an attribute that specifies when a variable can be used in association with the expression to determine the value of the variable. When using a calculation function, the value of the variable is not determined directly by its expression. Instead, it's passed to the calculation function that uses it to determine its value.
There are many calculation functions built-in to Jaspersoft Studio:
• Sum: At every iteration the variable value is summed. This is one of the cases where the initial value is really important.
• Count: At every iteration the variable value is incremented by one unit (this is only if the expression isn't null).
• Distinct Count: At every iteration the variable value is incremented by one unit, but only if the value of the expression was never returned before.
• Average: The value of the variable is the arithmetic average of all values received in input from the expression.
• Lowest: The variable takes the value of the lowest element received from the expression.
• Highest: The variable takes the value of the highest element received from the expression.
• Standard Deviation: The standard deviation of all the values received from the expression.
• First: The variable takes the value from the first value returned by the expression.
• System: No calculation is done and the expression is not evaluated, the value of the variable is the last value set on it. This is useful to store partial results or the final result of a computation.
9.3.3
Increment Type
As stated above, when a calculation function is defined, the value of the expression passed to the function that calculates the variable. By default this occurs for every record read, but sometimes a different behavior is desired. The increment type parameter enables you to change the "time" at which the calculation function is used.
The possible values for this attribute are:
• Report: The Calculation Function is called only at the end of the report, passing to it the expression's value at that moment.
• Page: The Calculation Function is called at the end of each page, passing to it expression's value at each of those moments.
• Column: The Calculation Function is called at the end of each column (for a one-column report, this is the same as Page).
• Group: The Calculation Function is called at the start of every occurrence of the specified group. This option is visible only if at least one group is defined.
• None: The Calculation Function is called after the read of every record, this is the default behavior.
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Remember the expression is evaluated at every record read, independent of the increment type selected, but the calculation function is used only when the times match those defined in the increment type.
9.3.4
Reset Type
The reset type specifies when a variable should be reset to its initial value (or to null if no initial value is defined). This is useful when the variable is used to compute a partial value, like a sum or an average of only some of the records read.
The possible values for this attribute are:
• Report: The variable is initialized only one time at the beginning of the report creation.
• Page: The variable is initialized on each page.
• Column: The variable is initialized again in each new column (for a one-column report, this is the same as
Page).
• Group: The variable is initialized at the start of every occurrence of the specified group. This option is available only if at least one group is defined.
• None: The variable is never initialized, so the initial value expression is ignored.
9.3.5
Incrementer Factory Class Name
The calculation functions are useful, but limited to numeric types. You may have a case where something more specific is needed. Suppose you have a String type field and you want to concatenate the value read. You can do this by defining a new Incrementer. An incrementer is a piece of java code that extends the
JRIncrementerFactory interface, and can build a personalized calculation function to do what you need. Every calculation function receives the expression value and the variable value and returns the result of the increment, so there is everything needed to do the calculation and return the right value.
9.4
Built-In Variables
Jaspersoft Studio makes some built-in variables available to you. See the table below. These variables can't be edited. You'll notice their names are light gray; other variables are black.
Variable Name
PAGE_NUMBER
COLUMN_NUMBER
REPORT_COUNT
PAGE_COUNT
COLUMN_COUNT
Description
Contains the current number of pages in the report at report time.
Contains the current number of columns.
Contains the number of records processed.
Contains the current number of records processed in the current page.
Contains the current number of records processed during the current column creation.
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9.5
Tips & Tricks
Pay attention to the variable type. For example if your expression returns a number but the variable type is string (the default type) then its value is always zero.
The form of the expression is very important for the computation of a value, especially when the variable itself is used in the expression. Consider the following example:
A field with name
Money_Gained with an integer value, which could be null, is read from the data source.
A variable
Total1 with the expression:
IF(EQUALS($F{Money_Gained}, null), $V{Total1}, $V{Total1}+$F{Money_Gained}) initial value zero, and no calculation function;
A variable
Total2 with the expression
$V{Money_Gained} == null ? $V{Total2} : $V{Total2}+$F{Money_Gained} initial value zero, and no calculation function;
The two expressions seem equivalent. They both add the money gained to the variable when it's not null
(remember that if there's no calculation function, the value of the expression is assigned to the variable). The check if the
Money_Gained has a null value is necessary because the sum of a number with the value null is null. So adding null to Total1 or Total2 changes the variable to null. But even with this check when
Money_
Gained becomes null for the first time even
Total1 is null, instead
Total2 has the correct value.
This happens because these two expressions have different interpreters, the first is interpreted by Groovy, the second by Java. The Java behavior evaluates the condition and then selects the correct branch. The Groovy behavior computes the two branches, then evaluates the expression, and finally returns the correct branch. Doing this adds the null value to
Total1 before doing the check, and makes
Total1 null. To avoid this, use the variable in the main branch only, for example
Total1 could be rewritten as:
$V{Total1} + IF(EQUALS($F{Money_Gained}, null),0,F{Money_Gained})
.
The syntax is still interpreted by Groovy, but now the variable is out of the
IF branches, so even if they are both evaluated, the variable maintains its value.
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10 D
ATA
A
DAPTERS
A data adapter is a resource that specifies how and where to obtain data. Specifically, it is an object that contains information about how to connect to or retrieve the data, and the logic to do that. Data adapters are stored in XML files and simplify porting of the report configuration and data source creation between
JasperReports environments. Whether you use a report with a data adapter XML file in Jaspersoft Studio, publish it to JasperReports® Server or deploy it to a custom JasperReports environment, JasperReports® Library can use it to obtain the data you specify.
This chapter starts by telling you how to create and use data adapters based on the data adapter types available in Jaspersoft Studio. Data adapters are designed to simplify the complexities of working with data in
JasperReports Library. However, data adapters are only one of the ways that JasperReports Library can get data from a data source. As you get more familiar with Jaspersoft Studio, you may want to go a little deeper and learn about data in JasperReports Library and the
JRDataSource interface.
Usually data adapters are stored as XML files in the same project as the report to simplify deployment to
JasperReports® Server or another environment. In Jaspersoft Studio, data adapters can also be stored in the
Repository Explorer, in which case they are visible from all the projects. If you plan to deploy the report outside
Jaspersoft Studio, it is better to store it in the project from the beginning.
This chapter has the following sections:
•
Creating and Editing Data Adapters
•
Using Data Adapters in Reports and Datasets
•
Working with Database JDBC Connections
•
Working with a MongoDB Data Adapter
•
Working with a Native Cassandra Connection
•
Working with a Collection of JavaBeans Data Adapter
•
Working with XML Data Adapters
•
Working with XML/A Data Adapters
•
Working with CSV Data Adapters
•
Using the Empty Record Data Adapter
•
Working with the JRDataSource Interface
•
A Look at TIBCO Spotfire Information Links
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10.1 Creating and Editing Data Adapters
10.1.1
Creating a Data Adapter
You create data adapters using the Data Adapter Wizard. The exact steps and information you need to provide vary with the type of adapter that you select. However, the initial steps are similar.
Data adapters can be created locally in projects or globally in the Repository Explorer.
• Data adapters in projects are stored as XML files, which simplifies deployment to JasperReports® Server. A project-level data adapter cannot be seen from other projects, but you can easily copy it from one project to another.
•
Global data adapters are saved as Eclipse settings and are visible to all projects. Global data adapters are saved as Eclipse settings. To deploy a global adapter to JasperReports® Server, you need to export it to an
XML file located in the same project as your report.
To create a data adapter in a project:
When you create a data adapter in a project, it is saved as an XML file in that project. Saving the XML file in the same project as your reports makes it easier to deploy the data adapter to JasperReports® Server.
1.
Click
Adapter.
on the main toolbar OR right-click a project in the Project Explorer and select New > Data
2.
In the DataAdapter File window, choose the project where you want to save the data adapter file. This should be the project that contains the report(s) you want to use with your data adapter.
3.
Enter a name for your adapter and click Next.
The Data Adapters Wizard opens.
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Figure 10-1 Data Adapter Wizard
4.
Select the data adapter type you want and click Next.
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5.
Enter a name for your adapter. This name is used when you select an adapter for a report.
6.
Enter the properties needed by the adapter type you selected. For example, for a database JDBC connection you need to select a JDBC driver and set the URL and database username and password. For a CSV file, you need to enter a filename, column names, and the column separator.
7.
(Optional) If you want to test the connection, click the Test button if available.
8.
Click Finish to create the adapter.
The adapter is saved as an XML file in the project location you selected.
To create a global data adapter:
When you create a global data adapter, it is available to all reports. However, if you want to deploy it to
JasperReports® Server, you must export it explicitly.
1.
Click in the Repository Explorer OR right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
The Data Adapters Wizard opens.
2.
Select the data adapter type you want and click Next.
3.
Enter a name for your adapter and the properties needed by the adapter type you selected. To optionally test the adapter, click the Test button.
4.
Click Finish to create the adapter.
10.1.2
Importing and Exporting Data Adapters
Jaspersoft Studio enables you to import and export data adapter definitions to simplify the process of sharing data source configurations.
To export a global data adapter as an XML file:
1.
In the Repository Explorer, right-click your data adapter and select Export to File.
Jaspersoft Studio prompts you to name the file and select the destination for the exported information.
Figure 10-2 Export to File Dialog
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2.
Select a location in the same project as the report that will be using this adapter, enter a name for the file, and click OK.
A simple XML file is created in the location you chose. The data adapter must be in the same project as your report. To use the same adapter in more than one project, see
10.1.3, “Copying a Data Adapter,” on page 150
To promote a data adapter file to a global data adapter:
You can make any file-based data adapter into a global adapter by importing it.
1.
Right-click on the Data Adapter node in the Repository Explorer, and choose Import from Workspace.
2.
Select the data adapter(s) you want to import.
3.
You can optionally select Overwrite Data Adapter if exists. Otherwise, if a duplicate data source name is found during the import, Jaspersoft Studio appends a number to the imported data source name.
4.
Click OK.
The import process adds all the selected data adapters to the current list.
10.1.3
Copying a Data Adapter
If you have saved your data adapter as an XML file, you can easily copy it between projects.
To copy a data adapter from one project to another:
1.
In the Project Explorer, right-click your data adapter and select Copy OR use Ctrl-C.
2.
Still in the Project Explorer, right-click the project or folder in your Jaspersoft® Studio workspace that you want to use and select Paste OR Ctrl-V.
The data adapter is copied to the new location.
10.2 Using Data Adapters in Reports and Datasets
You can use the Jaspersoft Studio user interface to select the data adapter to use for previewing reports and datasets. However, this selection is specific to Jaspersoft Studio. When you want to deploy your reports to
JasperReports Server or to a custom JasperReports deployment, you must specify the data adapter or data source you want to use.
10.2.1
Data Adapter For a Report
When you choose a data adapter during report creation, the drop-down lists all available adapters, with global adapters on top and project file-based adapters below. The example below shows the global adapters available with Jaspersoft® Studio followed by a sample file-based adapter local to the project, named
SampleDataAdapter.xml.
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Figure 10-3 List of Data Adapters During Report Creation
Data adapters are hierarchical. That is, if no adapter is directly defined for a subdataset, it looks for the adapter of its parent dataset, then its parent's parent, and so forth.
10.2.2
Data Adapters and Report Deployment
When you use a drop-down to select a data adapter for a report or dataset, you are just setting the current default data adapter used for preview. As you continue to design your report, you can easily change this data adapter by selecting a different data adapter during preview, or by editing the dataset and changing the adapter.
If you do not select a data adapter during preview, Jaspersoft Studio defaults to whichever data adapter was used most recently. If no data adapter is selected when you create a report, Jaspersoft® Studio defaults to the pre-configured empty data adapter.
This data adapter is internal to Jaspersoft® Studio. It is stored in an internal property
( com.jaspersoft.studio.data.defaultdataadapter
) which cannot be used in JasperReports Server or
JasperReports Library. Therefore, when you publish or deploy a report, you need to specify the data source you want to use in the deployed report. You can do this in the following ways:
•
When you publish a report to JasperReports Server, you can select a JasperReports Server data source to use.
See
5.2, “Publishing a Report to JasperReports Server,” on page 86
for more information. If you choose this method to select a data source, any subdatasets in the report must use the same data source.
• You can choose to set the default data adapter explicitly for the report and/or any subdatasets. You can set this property separately for any dataset in the report. If this property is present, you cannot choose a different adapter to preview the report.
10.2.3
Default Data Adapter
You can explicitly set the data adapter for a report or dataset using the net.sf.jasperreports.data.adapter
property.
Setting the default data adapter:
1.
In Outline view, to set the data adapter for the report, click the report's root node. To set the data adapter for a dataset, click the dataset.
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2.
In the Properties view, to set the data adapter for a report, go to the Report tab. To set the data adapter for a dataset, go to the Dataset tab.
3.
Click ... at the right of the Default Data Adapter property.
The Open Data Adapter dialog opens.
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Figure 10-4 Open Data Adapter Dialog
4.
Choose the format to use for specifying the data adapter location:
• Workspace resource – A file in your workspace, for example, value="../test/sampleadapter.xml"/>
. This should be a file in the same project s your report. If you want to use a global adapter, you need to export it to a file first. See
10.1.2, “Importing and Exporting Data Adapters,” on page 149
for more information.
• Absolute Path in the file system – A file path, for example, value="file:///C:/Adapters/sample-adapter.xml"
• URL – A remote URL that hosts the data adapter file, for example, value="http://myserver:8080/sample-adapter.xml"
• Custom value – A free-form string that identifies the location of the data adapter to use. You could use this if you wanted to enter a string in the repo: syntax, for example, value="repo:/reports/interactive/CustomersDataAdapter"
See
for more information.
5.
If you selected Workspace resource or Absolute Path, click Browse to locate the file in the workspace or in your file system. Otherwise, enter the URL or free-form string.
6.
Click Finish.
The default data adapter is set for the dataset. It is represented in the JRXML file using the net.sf.jasperreports.data.adapter
property.
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Figure 10-5 Dataset with Default Data Adapter
10.2.3.1 The JasperReports Data Adapter in the UI
When the JasperReports data adapter is present, it is shown as the bottom adapter on the list of available adapters. In the example below, New Data Adapter has been set as the default data adapter:
Figure 10-6 List of Data Adapters Including Default Data Adapter
10.3 Working with Database JDBC Connections
A JDBC connection lets you use a database accessed through a JDBC driver (such as a relational DBMS). When you use a JDBC connection in a report, you must specify a query.
10.3.1
Creating a Database JDBC Connection
To create a new JDBC connection:
1.
Create the connection globally or locally:
• To create the connection globally, right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
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• To create the connection local to a project, click , enter a name and location for the data adapter in the DataAdapter File dialog box, and then click Next.
The Data Adapter wizard appears (see
Figure 10-1, “Data Adapter Wizard,” on page 148
).
2.
From the list, select Database JDBC connection to open the Data Adapter dialog.
Figure 10-7 Configuring a JDBC Connection
3.
Name the connection (use a significant name like
Mysql – Test
). This is the name that will appear on the list of available connections when you create a report.
4.
In the JDBC Driver field, specify the JDBC driver to use for your database connection. The drop-down displays the names of the most common JDBC drivers.
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Figure 10-8 JDBC Drivers List
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If a driver is displayed in red, the JDBC driver class for that driver is not present in the class path and you must obtain and install the driver before using it. See
10.3.3, “Using a Database JDBC Connection,” on page 157
As of version 5.6.1, JasperReports Server includes the TIBCO JDBC drivers for the following commercial databases: Oracle, MS SQLServer and DB2. In some cases, these drivers provide functionality not provided by the vendors' driver. However, there may be some differences in queries between the two drivers. You can use the TIBCO drivers, or you can choose to install and use the driver supplied by the database vendor.
If you upload your reports to JasperReports® Server, make sure to use the same driver in both
JasperReports® Server and Jaspersoft® Studio.
5.
Enter the connection URL. To have Jaspersoft® Studio construct the URL, click the Wizard button. The
JDBC URL Wizard inserts the server name and the database name in the correct text fields.
6.
Enter a username and password to access the database. If the password is empty, it is better if you specify that it be saved. You can choose to save the password in one of two ways:
•
Clear text – This is not secure, but can sometimes be convenient when working in a developer or staging environment.
• Eclipse secure storage – This is the correct option for security, but can be difficult to work with when testing and saving adapters. In addition, it can make it difficult to share adapters with other developers or deploy data adapters to JasperReports Server.
7.
After you've inserted all the data, click the Test button to verify the connection. If everything's okay, you'll see a message that the test was successful.
8.
Click OK to exit the message.
9.
Click Finish to create the connection.
10.3.2
Troubleshooting a Database JDBC Connection
When the tests fail, the most common exceptions are:
• A
ClassNotFoundError was thrown.
•
The URL is not correct.
•
Parameters are not correct for the connection (database is not found, the username or password is wrong, etc.).
10.3.2.1 ClassNotFoundError
The
ClassNotFoundError exception occurs whenever a data adapter fails to load a class it requires. In the context of JDBC connections, the most likely cause is that the required JDBC driver is not present in the classpath. In general, a data adapter has two classpaths it uses to find libraries. First the adapter looks at any paths that were specified inside the data adapter when it was created. If it cannot load the libraries or classes it needs using its internal paths, the data adapter uses the Jaspersoft Studio classpath to look for them.
The Jaspersoft Studio classpath is defined in your Eclipse project. As Jaspersoft Studio uses its own class loader, it's enough to add resources such as jar files and directories containing classes to the Jaspersoft Studio classpath.
For example, suppose you want to create a connection to an Oracle database. Jaspersoft Studio does not ship the vendor's driver for this database. If you choose the oracle.jdbc.driver.OracleDriver
driver, when you test the connection, you'll see the
ClassNotFoundException
, as shown in
. You need to add the JDBC driver for Oracle, ojdbc14.jar, to the classpath.
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Figure 10-9
ClassNotFoundError exception
To add a resource to the Jaspersoft Studio classpath:
If you add a resource to the Jaspersoft Studio classpath, it will be available to all data adapters. In addition to
JARs, you can add variables, libraries, class folders, and external class folders. To add a jar to the Jaspersoft
Studio classpath:
1.
Click Project > Properties > Java Build Path>Libraries, and click Add JARsor Add External JARs.
2.
Browse to locate the jar you want to add.
3.
Select the file you want to add to the classpath.
4.
Click OK.
To add a JAR file to a data adapter's classpath:
If you need to use the driver only for this data adapter, you can instead add the driver on the data adapter's
Driver Classpath tab.
1.
If the adapter is not already open, double-click its icon in the Repository Explorer or Project Explorer to open it.
2.
Click on the Driver Classpath tab.
3.
Click Add and browse to locate the jar you want to add. If you want to add a different file type, use the menu at the bottom right.
4.
Click on the jar and Open.
The location of the file you chose is added to the driver classpath.
10.3.2.2 URL Not Correct
If a wrong URL is specified, you’ll get an exception when you click the Test button. You can find the exact cause of the error using the stack trace provided in the exception.
Use the JDBC URL Wizard to build the JDBC URL and try again.
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10.3.2.3 Parameters Not Correct for the Connection
If you try to establish a connection to a database with the wrong parameters (for example, invalid credentials or inaccessible database), the database returns a message is fairly explicit about the reason behind the failure of the connection.
10.3.3
Using a Database JDBC Connection
When you create a report with a JDBC connection, you specify a query to extract records from the database.
The query language you use depends on the connection type; the most common query type is an SQL query.
The use of JDBC or SQL connections is the simplest and easiest way to fill a report.
10.3.3.1 Fields Registration
In order to use SQL query fields in a report, you need to register them. You don't need to register all the selected fields—only those actually used in the report. For each field, specify name and type.
“Conversion of SQL and JAVA types ,” on page 157
shows SQL types and the Java objects they map to.
Table 10-1 Conversion of SQL and JAVA types
SQL Type
CHAR
VARCHAR
LONGVARCHAR
NUMERIC
DECIMAL
BIT
TINYINT
SMALLINT
INTEGER
BIGINT
Java Object
String
String
String java.math.BigDecimal
java.math.BigDecimal
Boolean
Integer
Integer
Integer
Long
SQL Type
REAL
FLOAT
DOUBLE
BINARY
VARBINARY
LONGVARBINARY
DATE
TIME
TIMESTAMP
Java Object
Float
Double
Double byte[] byte[] byte[] java.sql.Date
java.sql.Time
java.sql.Timestamp
The table doesn't include special types like BLOB, CLOB, ARRAY, STRUCT, and REF, because these types cannot be managed automatically by JasperReports. However, you can use them by declaring them generically as
Object and managing them by writing supporting static methods. The BINARY, VARBINARY, and
LONGBINARY types should be dealt with in a similar way. With many databases, BLOB and CLOB can be declared as java.io.InputStream
.
Whether an SQL type is converted to a Java object depends on the JDBC driver used.
For the automatic registration of SQL query fields, Jaspersoft Studio relies on the type proposed for each field by the driver itself.
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10.3.3.2 Filtering Records
The records in a report can be ordered and filtered. Set sort and filter options in the Report query dialog by clicking the Dataset and Query button .
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Figure 10-10 Filter Expression Tab and Expression Editor
Clicking the Data Preview tab shows your filtered data.The filter expression must return a Boolean object: true if a particular record can be kept, false otherwise.
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Figure 10-11 Data Preview
If no fields can be selected with the Add field button, check to see if the report contains fields. If not, close the query dialog, register the fields, and resume the sorting.
10.3.3.3 Using JDBC Connections for Subreports
You can also use a JDBC connection for a subreport or a personalized lookup function for decoding specific data. For this reason, JasperReports provides a java.sql.Connection
parameter called
REPORT_CONNECTION
.
You can use this parameter in any expression you like, with this parameters syntax:
$P{REPORT_CONNECTION}
This parameter contains the java.sql.Connection
class passed to JasperReports from the calling program.
10.4 Working with a MongoDB Data Adapter
MongoDB is a big data architecture based on the NoSQL model that is neither relational nor SQL-based.
Jaspersoft® Studio includes data adapters that allow reports to use a native MongoDB data connection or a
MongoDB JDBC data adapter. As of version 6.1.1 JasperReports Server also supports SSL and x509 authentication for MongoDB.
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10.4.1
Creating a Native MongoDB Connection
To create a MongoDB data adapter with the native driver:
Follow these steps to create a MongoDB data source with the native MongoDB driver.
1.
Create the connection globally or locally:
• To create the connection globally, right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
•
To create the connection local to a project, click , enter a name and location for the data adapter in the DataAdapter File dialog box, and then click Next.
The Data Adapter wizard appears (see
Figure 10-1, “Data Adapter Wizard,” on page 148
).
2.
From the list, select MongoDB Connection to open the Data Adapter dialog.
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Figure 10-12 Configuring a MongoDB Connection
3.
Fill in the required fields:
• Name: The name that will appear on the list of available data adapters when you create or run a report.
• Mongo URI: The URI of your MongoDB data.
4.
If you have configured your MongoDB source to be password protected, specify a valid username and password.
5.
Click Test to check the values you entered. If everything's okay, you'll see a success message.
6.
Click OK to exit the message.
7.
Click Finish to create the connection.
If you get a ClassNotFoundError exception, the most likely cause is that the required driver is not present in the classpath. See
10.3.2.1, “ClassNotFoundError,” on page 155
for more information.
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10.4.1.1 The Jaspersoft MongoDB Query Language
MongoDB is designed to be accessed through API calls in an application or a command shell. As a consequence, it does not have a defined query language. In order to write queries for MongoDB data sources, we have developed a query language based on the JSON-like objects upon which MongoDB operates. JSON is the JavaScript Object Notation, a textual representation of data structures that is both human- and machinereadable.
The Jaspersoft® MongoDB Query Language is a declarative language for specifying what data to retrieve from
MongoDB. The connector converts this query into the appropriate API calls and uses the MongoDB Java connector to query the MongoDB instance. The following examples give an overview of the Jaspersoft
MongoDB Query Language, with SQL-equivalent terms in parentheses:
• Retrieve all documents (rows) in the given collection (table):
{ 'collectionName' : 'accounts' }
• From all documents in the given collection, select the named fields (columns) and sort the results:
{
}
'collectionName' : 'accounts',
'findFields' : {'name':1,'phone_office':1,'billing_address_city':1,
'billing_address_street':1,'billing_address_country':1},
'sort' : {'billing_address_country':-1,'billing_address_city':1}
• Retrieve only the documents (rows) in the given collection (table) that match the query (where clause). In this case, the date is greater-than-or-equal to the input parameter, and the name matches a string (starts with
N):
{
}
'collectionName' : 'accounts',
'findQuery' : {
'status_date' : { '$gte' : $P{StartDate} },
'name' : { '$regex' : '^N', '$options' : '' }
}
The Jaspersoft® MongoDB Query Language also supports advanced features of MongoDB such as map-reduce functions and aggregation that are beyond the scope of this document. For more information, see the language reference on the Community website.
When you create a report or subdatasource from a native MongoDB connection, Jaspersoft® Studio automatically selects MongoDBQuery as the query language. You can explicitly view and set the query language using the Dataset and Query Dialog.
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Figure 10-13 Example Dataset and Query Dialog for a MongoDB Data Adapter
10.4.2
Creating a MongoDB JDBC Data Source
If you want to wrap your MongoDB data source in a domain or virtual data source, create a MongoDB JDBC data source. The MongoDB JDBC driver can create a default normalized schema for your data or, if you prefer, you can load a schema from the repository or your server file system.
This section describes functionality that can be restricted by the software license for JasperReports
Server. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
To create a MongoDB JDBC data source:
1.
Create the connection globally or locally:
• To create the connection globally, right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
•
To create the connection local to a project, click , enter a name and location for the data adapter in the DataAdapter File dialog box, and then click Next.
The Data Adapter wizard appears (see
Figure 10-1, “Data Adapter Wizard,” on page 148
).
2.
From the list, select Database JDBC Connection to open the Data Adapter dialog.
3.
In the JDBC Driver field, select MongoDB (TIBCO Jaspersoft).
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Figure 10-14 MongoDB JDBC Data Adapter Dialog
4.
Fill in the required fields:
• Name: The name that will appear on the list of available data adapters when you create or run a report.
• JDBC URL: The URL for your MongoDB instance. This is in the following format: jdbc:tibcosoftware:mongodb://host:port;databaseName=db;SchemaDefinition=file where:
•
host:port is the host and port of your MongoDB instance
• db is the name of the database to use in your MongoDB instance
•
file (optional) is a location on your local disk where you want to store the schema definition.
When you first connect to a MongoDB server, the driver automatically creates a normalized schema of the data and generates a SchemaDefinition for housing and sharing the normalized schema. You can also specify the path of an existing schema on your local disk.
5.
If you have configured your MongoDB source to be password protected, specify a valid username and password.
6.
(Optional) Click Connection Properties to specify any additional properties for your connection. For example, if you're using MongoDB 3.0 and you want to enable SSL, enter:
EncryptionMethod=SSL;ValidateServerCertificate=false
To enable both SSL encryption and self-signed CA, enter the TrustStore and KeyStore paths and the
KeyStore password. For example:
EncryptionMethod=SSL;TrustStore=<path>;KeyStore=<path>;KeyStorePassword=<password>;
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7.
Click Test to check the values you entered. If everything's okay, you'll see this message:
Figure 10-15 Test Confirmation Dialog
8.
Click OK to exit the message.
9.
Click Finish to create the connection.
If you get a ClassNotFoundError exception, it may be due to one of the following:
• You are not licensed to use the TIBCO MongoDB JDBC driver. This driver is only available in commercial editions.
• The required driver is not present in the classpath. See
10.3.2.1, “ClassNotFoundError,” on page 155
for more information.
10.5 Working with a Native Cassandra Connection
The Apache Cassandra database provides scalability and high availability for certain applications of big data.
For more information about Cassandra, see http://cassandra.apache.org/ .
The Cassandra data adapter relies on a driver that has certain limitations on how your data can be structured and accessed:
•
The current version of Cassandra does not support NULL values in the data. All required fields must have non-NULL default values.
• The current version of the driver does not support aggregate functions (sum, min, max).
• For query parameters, the current version of the driver supports $X(IN...), but no other $X functions.
The Cassandra data adapter supports queries in the Cassandra Query Language 3 (CQL3). To improve performance, design your Cassandra data using the following guidelines:
• Specify the
ALLOW FILTERING suffix to speed up queries.
• All fields referenced in
WHERE clauses of a query should be indexed.
10.5.1
Creating a Native Cassandra Data Adapter
To create a new Cassandra adapter:
1.
Create the connection globally or locally:
•
To create the connection globally, right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
• To create the connection local to a project, click , enter a name and location for the data adapter in the DataAdapter File dialog box, and then click Next.
The Data Adapter wizard appears (see
Figure 10-1, “Data Adapter Wizard,” on page 148
).
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2.
From the list, select Cassandra Connection to open the Data Adapter dialog.
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Figure 10-16 Configuring a Cassandra Native Connection
3.
Fill in the required fields:
•
Name: The name that will appear on the list of available data adapters when you create a report.
• Port: Use port 9042 with the Cassandra data source. Cassandra's default port of 9160 is for the Thrift client that is commonly used with Cassandra. To use the Cassandra Query Language (CQL) with your
Cassandra data source, you may need to configure your Cassandra instance as follows: start_native_transport: true native_transport_port: 9042
•
Keyspace: The keyspace of your Cassandra instance.
4.
If you have configured your Cassandra source to be password protected, specify a valid username and password. Due to compatibility issues, Cassandra authentication is supported only when you use Cassandra
1.12.18 and above. If the password is empty, it is better if you specify that it be saved. You can choose to save the password in one of two ways:
•
Clear text – This is not secure, but can sometimes be convenient when working in a developer or staging environment.
• Eclipse secure storage – This is the correct option for security, but can be difficult to work with when testing and saving adapters. In addition, it can make it difficult to share adapters with other developers or deploy data adapters to JasperReports Server.
5.
Click Test to check the values you entered. Make sure that the port is set to 9042, because the connection test will also work with the wrong port (9160). If everything's okay, you'll see a success message.
6.
Click OK to exit the message.
7.
Click Finish to create the connection.
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If you get a ClassNotFoundError exception, the most likely cause is that the required driver is not present in the classpath. See
10.3.2.1, “ClassNotFoundError,” on page 155
for more information.
10.5.2
Using a Cassandra Connection
When you create a report or subdatasource from a native Cassandra connection, specify a CQL query to extract records from the database.
Figure 10-17 Data Preview
If no fields can be selected with the Add field button, check to see if the report contains fields. If not, close the query dialog, register the fields, and resume the sorting.
10.6 Working with a Collection of JavaBeans Data Adapter
A collection of JavaBeans data adapter allows you to use JavaBeans as data for a report. In this context, a
JavaBean is a Java class that exposes its attributes with a series of get methods, with the following syntax: public <returnType> getXXX() where
<returnType>
(the return value) is a generic Java class or a primitive type (such as int
, double
, and so on).
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10.6.1
Implementing the Factory Class for a Collection of JavaBeans
The collection of JavaBeans data adapter uses an external class (named
Factory
) to produce some objects (the
JavaBeans) that constitute the data to pass to the report. To use a collection of JavaBeans as a data adapter in
Jaspersoft® Studio, you must create an instance of the
Factory class and provide a static method to instantiate different JavaBeans and to return them as a collection ( java.util.Collection
) or an array (
Object[]
). The following example shows how you might create write an instance of the
Factory class.
Suppose that you have an collection of JavaBeans, where the data is represented by a set of objects of type
PersonBean
. The following table shows the code for
PersonBean
, which contains two fields: name
(the person’s name) and age
:
Table 10-2
PersonBean example
public class PersonBean
{ private String name = ""; private int age = 0; public PersonBean(String name, int age)
{ this.name = name; this.age = age;
} public int getAge()
{ return age;
}
} public String getName()
{ return name;
}
To use this collection of beans, you need to create an instance of the
Factory class. Your class, named
TestFactory
, must contain the actual data that is used by the report. In this case, it will be something similar to this:
Table 10-3 PersonBean example - Class result
public class TestFactory
{ public static java.util.Collection generateCollection()
{ java.util.Vector collection = new java.util.Vector(); collection.add(new PersonBean("Ted", 20) ); collection.add(new PersonBean("Jack", 34) ); collection.add(new PersonBean("Bob", 56) ); collection.add(new PersonBean("Alice",12) ); collection.add(new PersonBean("Robin",22) ); collection.add(new PersonBean("Peter",28) );
}
} return collection;
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A data adapter based on this class would represent five JavaBeans of
PersonBean type.
10.6.2
Creating a Data Adapter from a Factory Class
Once you have created your
Factory class instance, you can create a data adapter that uses your collection of
JavaBeans.
1.
Create the connection globally or locally:
• To create the connection globally, right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
•
To create the connection local to a project, click , enter a name and location for the data adapter in the DataAdapter File dialog box, and then click Next.
The Data Adapter wizard appears (see
Figure 10-1, “Data Adapter Wizard,” on page 148
).
2.
To create a connection to handle JavaBeans, select Collection of JavaBeans in the list of data adapter types.
The fields necessary to create a collection JavaBeans appear.
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Figure 10-18 Collection of JavaBeans Data Adapter
3.
Create a name for your adapter.
4.
Enter the name of your Java class in the Factory class. For the example above, you would need to specify the class name for
TestFactory
.
5.
Enter the name of the static method in your Factory class. In the example above, this is generateCollection
.
6.
By default, the field names in your JavaBeans become the field names in your data adapter. If your
JavaBeans definition has field descriptions, and you want to use these as names in Jaspersoft® Studio, select Use field description.
7.
If necessary, you can add the path to your jar files.
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10.6.3
Registering the Fields
One peculiarity of a collection of JavaBeans data adapter is that the fields are exposed through get methods.
This means that if the JavaBean has a getXyz() method, xyz becomes the name of a record field (the JavaBean represents the record).
In this example, the
PersonBean object shows two fields: name and age
. Register them in the fields list as a
String and an
Integer
, respectively.
Create a new empty report and add the two fields by right-clicking the Fields node in the outline view and selecting Add field. The field names and the types of the fields are: name ( java.lang.String
) and age
( java.lang.Integer
).
Drag the fields into the Detail band and run the report. (Make sure the active connection is the
TestFactoryAdapter.) To refer to an attribute of an attribute, use periods as a separator. For example, to access the street attribute of an
Address class contained in the
PersonBean
, the syntax would be address.street
.
The real call would be
<someBean>.getAddress().getStreet()
.
Figure 10-19 Layout of a Report Based on JavaBeans
If you selected Use field description when you specified the properties of your data adapter, the mapping between JavaBean attribute and field value uses the field description instead of the field name.
Jaspersoft Studio provides a visual tool to map JavaBean attributes to report fields. To use it, open the query window, go to the tab JavaBean Data Source, insert the full class name of the bean you want to explore, and click Read attributes. The tab displays the attributes of the specified bean class.
•
If an attribute is also a Java object, you can double-click the object to display its other attributes.
•
To map a field, select an attribute name and click the Add Selected Field(s) button.
10.7 Working with XML Data Adapters
JasperReports supports data adapters for XML documents.
10.7.1
Creating a Node Set for an XML Document
An XML document is typically organized as a tree, and doesn't match the table-like form required by
JasperReports. For this reason, you have to use an XPath expression to define a node set. The specifications of the XPath language are available at http://www.w3.org/TR/xpath . Some examples can help you understand how to define the nodes.
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The XML file below is an address book in which people are grouped in categories, followed by a second list of favorite objects. In this case, you can define different node set types. First you'll need to decide how you want to organize the data in your report.
Table 10-4 Example XML file
<addressbook>
<category name="home">
<person id="1">
<lastname>Davolio</lastname>
<firstname>Nancy</firstname>
</person>
<person id="2">
<lastname>Fuller</lastname>
<firstname>Andrew</firstname>
</person>
<person id="3">
<lastname>Leverling</lastname>
</person>
</category>
<category name="work">
<person id="4">
<lastname>Peacock</lastname>
<firstname>Margaret</firstname>
</person>
</category>
<favorites>
<person id="1"/>
<person id="3"/>
</favorites>
</addressbook>
To select only the people contained in the categories (that is, all the people in the address book), use the following expression:
/addressbook/category/person
Four nodes are returned as shown in the following table.
Table 10-5 Node set with expression /addressbook/category/person
<person id="1">
<lastname>Davolio</lastname>
<firstname>Nancy</firstname>
</person>
<person id="2">
<lastname>Fuller</lastname>
<firstname>Andrew</firstname>
</person>
<person id="3">
<lastname>Leverling</lastname>
</person>
<person id="4">
<lastname>Peacock</lastname>
<firstname>Margaret</firstname>
</person>
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If you want to select the people appearing in the favorites node, the expression to use is
/addressbook/favorites/person
Two nodes are returned.
<person id="1"/>
<person id="3"/>
Here's another expression. It's a bit more complex, but it shows all the power of the Xpath language. The idea is to select the person nodes belonging to the work category. The expression to use is the following:
/addressbook/category[@name = "work"]/person
The expression returns only one node, the one with an ID equal to 4, as shown here:
<person id="4">
<lastname>Peacock</lastname>
<firstname>Margaret</firstname>
</person>
10.7.2
Creating an XML Data Adapter
After you've created an expression to select a node set, you can create an XML data adapter.
1.
Create the connection globally or locally:
• To create the connection globally, right-click Data Adapters in the Repository Explorer and choose
Create Data Adapter.
•
To create the connection local to a project, click , enter a name and location for the data adapter in the DataAdapter File dialog box, and then click Next.
The Data Adapter wizard appears (see
Figure 10-1, “Data Adapter Wizard,” on page 148
).
2.
From the list, select XML document to open the Data Adapter dialog.
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Figure 10-20 Configuring an XML Data Adapter
3.
Enter a name for your adapter.
4.
XML file is the only required field. Choose an XML file or enter the URL where your XML data is located.
5.
(URL only.) If you entered a URL in the XML file field, click the Options button to open the Http
Connection Options dialog box.
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Figure 10-21 HTTP Connection Options
In this dialog you can enter the following options:
• Username and Password (optional) – The username and password to use if your CSV location requires authentication.
• Request Type – Select GET (default) or POST.
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•
To add a parameter to the request URL, click Add in the URL Parameters tab. Enter the name and value of your parameters in the Parameter dialog and click OK. For multiple parameters, add each parameter separately.
• For a POST request, to add parameters to the body of the POST, click Add in the POST Parameters tab.
Enter the name and value of your parameters in the Parameter dialog and click OK. For multiple parameters, add each parameter separately.
When you have configured your request, click OK.
6.
Choose whether to provide a set of nodes using a pre-defined static XPath expression, or set the XPath expression directly in the report.
We recommend using a report-defined XPath expression. This enables you to use parameters inside the
XPath expression, which acts like a real query on the supplied XML data.
Optionally, you can specify Java patterns to convert dates and numbers from plain strings to more appropriate Java objects (like Date and Double). For the same purpose, you can define a specific locale and time zone to use when parsing the XML stream.
10.7.3
Registration of Fields for an XML Data Adapter
In addition to the type and name, the definition of a field in a report using an XML data adapter requires an expression inserted as a field description. As the data adapter aims always to be one node of the selected node set, the expressions are relative to the current node.
To select the value of an attribute of the current node, use the following syntax:
@<name attribute>
For example, to define a field that must point to the id attribute of a person (attribute id of the node person), it's sufficient to create a new field, name it, and set the description to:
@id
It's also possible to get to the child nodes of the current node. For example, if you want to refer to the lastname node, child of person
, use the following syntax: lastname
To move to the parent value of the current node (for example, to determine the category to which a person belongs), use a slightly different syntax: ancestor::category/@name
The ancestor keyword indicates that you're referring to a parent node of the current node. Specifically, the first parent of category type, of which you want to know the value of the name attribute.
Now, let’s see everything in action. Prepare a simple report with the registered fields shown here:
Field name
id lastname firstname name of category
Description
@id lastname firstname ancestor::category/@name
Type
Integer
String
String
String
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Jaspersoft Studio provides a visual tool to map XML nodes to report fields; to use it, open the query window and select XPath as the query language. If the active connection is a valid XML data adapter, the associated
XML document is shown in a tree view. To register the fields, set the record node by right-clicking a Person node and selecting the menu item Set record node. The record nodes are displayed in bold.
Then one by one, select the nodes or attributes and select the pop-up menu item Add node as field to map them to report fields. Jaspersoft Studio determines the correct XPath expression to use and creates the fields for you. You can modify the generated field name and set a more suitable field type after the registration of the field in the report (which happens when you close the query dialog).
Insert the different fields in the Detail band. The XML file used to fill the report is that shown:
The XPath expression for the node set selection specified in the query dialog is:
/addressbook/category/person
10.7.4
XML Data Adapters and Subreports
A node set allows you to identify a series of nodes that represent records from a
JRDataSource point of view.
However, due to the tree-like nature of an XML document, it may be necessary to see other node sets that are subordinate to the main nodes.
Consider the XML in
Table 10-6, “Complex XML example,” on page 174
. This is a slightly modified version
of
Table 10-4, “Example XML file,” on page 170
. For each person node, a hobbies node is added which
contains a series of hobby nodes and one or more e-mail addresses.
Table 10-6 Complex XML example
<addressbook>
<category name="home">
<person id="1">
<lastname>Davolio</lastname>
<firstname>Nancy</firstname>
<email>[email protected]</email>
<email>[email protected]</email>
<hobbies>
<hobby>Music</hobby>
<hobby>Sport</hobby>
</hobbies>
</person>
<person id="2">
<lastname>Fuller</lastname>
<firstname>Andrew</firstname>
<email>[email protected]</email>
<email>[email protected]</email>
<hobbies>
<hobby>Cinema</hobby>
<hobby>Sport</hobby>
</hobbies>
</person>
</category>
<category name="work">
<person id="3">
<lastname>Leverling</lastname>
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<email>[email protected]</email>
</person>
<person id="4">
<lastname>Peacock</lastname>
<firstname>Margaret</firstname>
<email>[email protected]</email>
<hobbies>
<hobby>Food</hobby>
<hobby>Books</hobby>
</hobbies>
</person>
</category>
<favorites>
<person id="1"/>
<person id="3"/>
</favorites>
</addressbook>
What we want to produce is a document that is more elaborate than those you have seen so far. For each person, we want to present their e-mail addresses, hobbies, and favorite people.
You can create this document using subreports. You'll need a subreport for the e-mail address list, one for hobbies, and one for favorite people (that is a set of nodes out of the scope of the XPath query we used). To generate these subreports, you need to understand how to produce new data sources to feed them. In this case, you'll use the
JRXmlDataSource
, which exposes two extremely useful methods: public JRXmlDataSource dataSource(String selectExpression) public JRXmlDataSource subDataSource(String selectExpression)
The first method processes the expression by applying it to the whole document, starting from the actual root.
The second assumes the current node is the root.
Both methods can be used in the data source expression of a subreport element to dynamically produce the data source to pass to the element. The most important thing to note is that this mechanism allows you to make both the data source production and the expression of node selection dynamic.
The expression to create the data source that feeds the subreport of the e-mail addresses is:
((net.sf.jasperreports.engine.data.JRXmlDataSource)
$P{REPORT_DATA_SOURCE}).subDataSource("/person/email")
This code returns all the e-mail nodes that descend directly from the present node (person).
The expression for the hobbies subreport is similar, except for the node selection:
((net.sf.jasperreports.engine.data.JRXmlDataSource)
$P{REPORT_DATA_SOURCE}).subDataSource("/person/hobbies/hobby")
Next, declare the master report’s fields. In the subreport, you have to refer to the current node value, so the field expression is simply a dot (.),
Proceed with building your three reports: xml_addressbook.jasper
, xml_addresses.jasper
, and xml_ hobbies.jasper
.
In the master report, xml_addressbook.jrxml
, insert a group named “Name of category,” in which you associate the expression for the category field (
$F{name of category}
). In the header band for Name of category, insert a field to display the category name. By doing this, the names of the people are grouped by category (as in the XML file).
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In the Detail band, position the id
, lastname
, and firstname fields. Below these fields, add the two Subreport elements, the first for the e-mail addresses, the second for the hobbies.
The e-mail and hobby subreports are identical except for the name of the field in each one. The two reports should be as large as the Subreport elements in the master report, so remove the margins and set the report width accordingly.
Preview both the subreports just to compile them and generate the relative
.jasper
files. Jaspersoft Studio returns an error during the fill process, but that's expected. We haven't set an Xpath query, so JasperReports can't get any data. You can resolve the problem by setting a simple Xpath query (it isn't used in the final report), or you can preview the subreport using the empty data adapter (select it from the drop-down in the tool bar).
When the subreports are done, execute the master report. If everything is okay, the report groups people by home and work categories and the subreports associated with each person.
As this example demonstrates, the real power of the XML data adapter is the versatility of XPath, which allows navigation of the node selection in a refined manner.
10.8 Working with XML/A Data Adapters
XML/A (XML for Analysis) is an XML standard for accessing remote data in an OLAP schema. Jaspersoft
Studio supports an XML/A data adapter that can connect various XML/A providers such as JasperReports®
Server and Microsoft SQL Server Analytic Services (SSAS). Because Jaspersoft Studio uses OLAP4J
( http://www.olap4j.org/ ), it may also be able to connect to other types of XML/A providers.
The remote server must also be configured for XML/A. For more information, including instructions for configuring Jaspersoft OLAP, see the Jaspersoft® OLAP User Guide .
To create an XML/A Data Adapter:
1.
Right-click Data Adapters in the Repository Explorer, and select Create Data Adapter.
2.
Select XML/A Server and click Next.
3.
Enter a name for the data adapter.
4.
Enter the URL for your XML/A provider. The type of server determines the value. For example:
• If the XML/A server is JasperReports® Server, the URL is something like: http://<hostname>:<port>/jasperserver-pro/xmla
•
If the XML/A server is Microsoft SSAS 2012, the URL is something like: http://<hostname>/MSSQL_2012/msmdpump.dll
5.
Enter a user name and password of a user that has sufficient access in the report server to return your data.
6.
Click Get Metadata.
Jaspersoft Studio attempts to connect to the server and return information about its data sources, catalogs, and cubes. If it's successful, default values appear in the drop-downs. If the connection fails, check the URL, ensure that the remote server is available, and try again.
7.
Select the data source, catalog, and cube that stores the data you want for your report.
8.
Click Test.
Jaspersoft Studio connects to the server and read the cube you selected. If the connection fails, check the
URL, ensure that the remote server is available, and try again.
9.
When the test succeeds, click OK to close the message and click Finish to close the New Data Adapter wizard.
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When you create a report using this data adapter, you may see a message indicating that the data adapter doesn't support the ability to retrieve fields. This means Jaspersoft Studio doesn't have enough information to preview your data. After you provide an MDX query, Jaspersoft Studio can automatically read fields and suggest their datatypes.
10.8.1
Registration of fields in XML/A Providers
When you create an XML/A data adapter, you define the cube from which to read data. Jaspersoft Studio can then inspect the remote server and suggest datatypes for the fields returned.
To register fields returned by an XML/A data adapter:
1.
With your report open in the Design tab, click to open the Dataset and Query window.
2.
Select the data adapter that points to your XML/A provider from the drop-down in the upper-left corner.
3.
Select MDX from the Language drop-down.
4.
Enter a valid MDX query in the text field.
To create a good MDX query, you must be familiar with both the language itself and the data you want to work with. You can also use a tool (such as the Jaspersoft OLAP Workbench) to load your OLAP schema and automatically generate MDX queries from it.
5.
Click Read Fields.
Jaspersoft Studio returns the XML/A provider's data, including fields and parameters, and populates the window's tabs with information. For more on how these tabs can be used to define the data in your report, see
Chapter 16, “Creating Queries,” on page 277
.
Jaspersoft Studio also sets the class type of each field to an appropriate Java datatype. If Jaspersoft Studio sets an incorrect datatype, you can set the correct type after the fields are added to your report.
6.
When the data in the Data Preview tab looks like the data you want to fill your report, click OK to close the Dataset and Query window.
10.9 Working with CSV Data Adapters
You can create a connection based on a CSV file or URL location.
To create a connection based on a CSV file:
1.
Click the New button in the Connections/Datasources dialog and select CSV File from the list of data adapter types.
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Figure 10-22 CSV Data Adapter
2.
Set a name for the connection.
3.
In the CSV file field, choose a CSV file or enter the URL where your CSV data is located.
4.
(URL only.) If you entered a URL in the CSV file field, click the Options button to open the Http
Connection Options dialog box.
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Figure 10-23 HTTP Connection Options
In this dialog you can enter the following options:
• Username and Password (optional) – The username and password to use if your CSV location requires authentication.
• Request Type – Select GET (default) or POST.
• To add a parameter to the request URL, click Add in the URL Parameters tab. Enter the name and value of your parameters in the Parameter dialog and click OK. For multiple parameters, add each parameter separately.
•
For a POST request, to add parameters to the body of the POST, click Add in the POST Parameters tab.
Enter the name and value of your parameters in the Parameter dialog and click OK. For multiple parameters, add each parameter separately.
When you have configured your request, click OK.
5.
Declare the fields in the data adapter.
• If the first line in your file contains the names of the columns, click Get column names from the
first row of the file and select the Skip the first line check box . This forces JasperReports to skip the first line (the one containing your column labels). In any case, the column names read from the file are used instead of the declared ones, so avoid modifying the names found with the Get column
names button.
• If the first line of your CSV file doesn’t contain the column names, set a name for each column using the syntax
COLUMN_0, COLUMN_1
, and so on.
If you define more columns than the ones available, you’ll get an exception at report filling time.
JasperReports assumes that for each row all the columns have a value (even if they are empty).
6.
If your CSV file uses nonstandard characters to separate fields and rows, you can adjust the default setting for separators using the Separators tab.
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Figure 10-24 Separators Tab
7.
Click Finish.
10.9.1
Registration of the Fields for a CSV Data Adapter
When you create a CSV data adapter, you must define a set of column names as fields for your report. To add them to the fields list, set your CSV data adapter as the active connection and open the Report query dialog.
Open the Dataset and Query Dialog and click the Read Fields button.
By default, Jaspersoft Studio sets the class type of all fields to java.lang.String
. If you're sure the text of a particular column can be easily converted to a number, a date, or a Boolean value, set the correct field type yourself after the fields are added to your report.
The pattern used to recognize a timestamp (or date) object can be configured at the data adapter level by selecting the Use custom date format check box.
10.10Using the Empty Record Data Adapter
By default, Jaspersoft Studio provides a pre-configured empty data source that returns a single record.
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To create a new empty data source with more records:
1.
Double-click One Empty Record in the Repository Explorer. The Data Adapter Wizard appears with
Empty rows.
Figure 10-25 Data Adapter Wizard > Empty Record
2.
Set the number of empty records you need. Remember, whatever field you add to the report, its value is set to null
. Since this data adapter doesn’t care about field names or types, this is a perfect way to test any report (keeping in mind that the fields are always set to null
).
3.
Click Finish.
10.10.1 Understanding the Empty Record Implementation
The empty record data adapter in Jaspersoft® Studio uses the special JasperReports data source
JREmptyDataSource
. This data source returns true to the next method for the record number (by default only one), and always returns null to every call of the getFieldValue method. It's like having records without fields, that is, an empty data source.
The two constructors of this class are: public JREmptyDataSource(int count) public JREmptyDataSource()
The first constructor indicates how many records to return, and the second sets the number of records to one.
10.11Working with the JRDataSource Interface
All data adapters implement the
JRDataSource interface. Some data adapters, such the JDBC data connections, do this indirectly using a connection and a query; other data adapters, such as adapters for CSV files, XML documents, and collections of JavaBeans, do this directly. This section is useful if you want to understand more about the direct data adapters, or if you are interested in creating a custom data adapter.
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10.11.1 Understanding the JRDataSource Interface
Data supplied by a
JRDataSource is ideally organized into records as in a table. Every
JRDataSource must implement the following two methods: public boolean next()
– Returns true if the cursor is positioned correctly in the subsequent record, false if no more records are available.
public Object getFieldValue(JRField jrField)
– Moves a virtual cursor to the next record
Every time JasperReports executes the public boolean next() method, all the fields declared in the report are filled and all the expressions (starting from those associated with the variables) are calculated again.
Subsequently, JasperReports determines whether to print the header of a new group, to go to a new page, and so on. When next returns false, the report is ended by printing all final bands (Group Footer, Column Footer, Last
Page Footer, and Summary). The method can be called as many times as there are records present (or represented) from the data source instance.
The method public Object getFieldValue(JRField jrField) is called by JasperReports after a call to next results in a true value. In particular, it's executed for every single field declared in the report. In the call, a
JRField object is passed as a parameter. It's used to specify the name, the description and the type of the field from which to obtain the value (all this information, depending on the specific data source implementation, can be combined to extract the field value).
The type of the value returned by the public Object getFieldValue(JRField jrField) method has to be adequate for that declared in the
JRField parameter, except when a null is returned. If the type of the field was declared as java.lang.Object
, the method can return an arbitrary type. In this case, if required, a cast can be used in the expressions. A cast is a way to dynamically indicate the type on an object, the syntax of a cast is:
(type)object in example:
(com.jaspersoft.ireport.examples.beans.PersonBean)$F{my_person}
Usually a cast is required when you need to call a method on the object that belongs to a particular class.
10.11.2 Implementing a New JRDataSource
If the
JRDataSource supplied with JasperReports doesn't meet your requirements, you can write a new
JRDataSource
. This is not a complex operation. In fact, all you have to do is create a class that implements the
JRDataSource interface that exposes two simple methods: next and getFieldValue
.
Table 10-7 The JRDataSource interface
package net.sf.jasperreports.engine; public interface JRDataSource
{ public boolean next() throws JRException; public Object getFieldValue(JRField jrField) throws JRException;
}
The next method is used to set the current record into the data source. It has to return true if a new record to elaborate exists; otherwise it returns false
.
If the next method has been called positively, the getFieldValue method has to return the value of the requested field or null
. Specifically, the requested field name is contained in the
JRField object passed as a
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JRField is an interface through which you can get information associated with a field—the name, description, and Java type that represents it.
Now try writing your personalized data source. You have to write a data source that explores the directory of a file system and returns the found objects (files or directories). The fields you create to manage your data source are the same as the file name, which should be named FILENAME; a flag that indicates whether the object is a file or a directory, which should be named IS_DIRECTORY; and the file size, if available, which should be named SIZE.
You data source should have two constructors: the first receives the directory to scan as a parameter; the second has no parameters and uses the current directory to scan.
Once instantiated, the data source looks for the files and the directories present in the way you indicate and fills the array files.
The next method increases the index variable you use to keep track of the position reached in the array files, and returns true until you reach the end of the array.
Table 10-8 Sample personalized data source
import net.sf.jasperreports.engine.*; import java.io.*; public class JRFileSystemDataSource implements JRDataSource
{
File[] files = null; int index = -1; public JRFileSystemDataSource(String path)
{
File dir = new File(path); if (dir.exists() && dir.isDirectory())
{ files = dir.listFiles();
}
} public JRFileSystemDataSource()
{ this(".");
} public boolean next() throws JRException
{ index++; if (files != null && index < files.length)
{ return true;
} return false;
} public Object getFieldValue(JRField jrField) throws JRException
{
File f = files[index]; if (f == null) return null; if (jrField.getName().equals("FILENAME"))
{ return f.getName();
} else if (jrField.getName().equals("IS_DIRECTORY"))
{
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}
{ else if (jrField.getName().equals("SIZE")) return new Long(f.length());
}
// Field not found...
return null;
}
}
The getFieldValue method returns the requested file information. Your implementation doesn't use the information regarding the return type expected by the caller of the method. It assumes the name has to be returned as a string. The flag
IS_DIRECTORY as a Boolean object, and the file size as a
Long object.
The next section shows how to use your personalized data source in Jaspersoft Studio and test it.
10.11.3 Using a Custom JasperReports Data Source with Jaspersoft Studio
Jaspersoft Studio provides a special connection for your personalized data sources. It's useful for employing whatever
JRDataSource you want to use through some kind of factory class that provides an instance of that
JRDataSource implementation. The factory is just a simple Java class useful for testing your data source and filling a report in Jaspersoft Studio. The idea is the same as what you have seen for the collection of JavaBeans data adapter — you need to write a Java class that creates the data source through a static method and returns it.
For example, if you want to test the
JRFileSystemDataSource in the previous section, you need to create a simple class like that shown in this code sample:
Table 10-9 Class for testing a custom data source
import net.sf.jasperreports.engine.*; public class FileSystemDataSourceFactory { public static JRDataSource createDatasource()
}
}
{ return new JRFileSystemDataSource("/");
This class, and in particular the static method that's called, executes all the necessary code for instancing the data source correctly. In this case, you create a new
JRFileSystemDataSource object by specifying a way to scan the directory root (
"/"
).
Now that you have defined the way to obtain the
JRDataSource you prepared and the data source is ready to be used, you can create the connection through which it can be used.
Create a new connection as you normally would (see
“Working with Database JDBC Connections” on page 153
), then select Custom implementation of JRDataSource from the list and specify a data source
name like
TestFileSystemDataSource
(or whatever name you want), as shown below.
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Figure 10-26 Configuring a Custom Data Adapter
Next, specify the class and method to obtain an instance of your
JRFileSystemDataSource
, that is,
TestFileSystemDataSource and test
.
There is no automatic method to find the fields managed by a custom data source.
In this case, you know that the
JRFileSystemDataSource provides three fields:
FILENAME
(String),
IS_
DIRECTORY
(Boolean), and
SIZE
(Long). After you have created these fields, insert them in the report’s Detail band.
Divide the report into two columns and in the Column Header band, insert Filename and Size tags. Then add two images, one representing a document and the other an open folder. In the
Print when expression setting of the Image element placed in the foreground, insert the expression
$F{IS_DIRECTORY}
, or use as your image expression a condition like the following:
($F{IS_DIRECTORY}) ? “folder.png” : “file.png”
In this example, the class that instantiated the
JRFileSystemDataSource was very simple. But you can use more complex classes, such as one that obtains the data source by calling an Enterprise JavaBean or by calling a web service.
10.12A Look at TIBCO Spotfire Information Links
You can populate reports created in Jaspersoft® Studio with data from TIBCO Spotfire. You can navigate your
Spotfire library, select Information Links and Spotfire Binary Data Files (SBDFs), and inspect their data. To load
Spotfire data, create a data adapter to connect to the data. The data adapter will return data in tabular form.
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Before you publish the report to JasperReports® Server, export your data adapter as an XML file so you can add it to the server's repository.
This version of Jaspersoft® Studio supports TIBCO Spotfire 6.5 and above. Earlier versions may also work but have not been tested extensively.
To create a data adapter for a Spotfire Information Link:
1.
In the Repository Explorer, right-click Data Adapters and select Create Data Adapter to display the Data
Adapter wizard.
2.
Enter a name for the data adapter.
3.
Enter the URL to your Spotfire Web Player in this form: http://<web-player-host>/SpotfireWeb where <web-player-host> is the IP address or name of the computer hosting the Spotfire Web Player where you access your Information Link.
4.
Enter your Spotfire user name and password.
5.
Click Browse next to the Resource ID field to locate and select your Information Link in the Spotfire library.
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Figure 10-27 Spotfire Library displayed in Jaspersoft® Studio
You can also create reports against SBDFs; to do so, select one from your Spotfire library.
6.
Click OK.
7.
Click Test to test your connection.
8.
If the test fails, check your URL, credentials, and resource ID.
9.
When the test succeeds, click Finish.
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It isn't uncommon for an Information Link to return millions of rows of data, which may take a some time for Jaspersoft® Studio to process when data is loaded, such as when previewing the report; the same may hold true in JasperReports® Server.
To create your report:
1.
Click File > New > JasperReport.
2.
Select template and enter a name for your report.
3.
Click Next. The Data Source dialog appears.
4.
Select the Spotfire Information Link data adapter you created above.
5.
Select the fields to include in your data set.
6.
Click Next.
7.
Optionally select a field to define grouping.
8.
Click Finish. Jaspersoft Studio displays the report in the Design tab.
9.
Edit the report as needed. For example, add fields and components and configure your query and dataset.
10. Click Preview to ensure that the report is correctly configured.
11. When your report is ready, click File > Save.
To export your data adapter as an XML file:
1.
In the Repository Explorer, right-click your Spotfire Information Link data adapter and select Export to
File.
2.
Select the folder in your Jaspersoft Studio workspace that contains your report, enter a name for the data adapter, and click OK.
To configure the report to use the exported data adapter:
1.
In the Outline view, click the root node of your report to display the report properties.
2.
Click Advanced.
3.
Expand Misc and click the ellipsis to the right of Properties to open the Properties window.
4.
Click Add to create a property that indicates the data adapter to use.
5.
In the Property Name field, enter net.sf.jasperreports.data.adapter
.
6.
In the Value field, enter the name of the data adapter you exported (this is an XML file).
7.
Click OK.
You're ready to publish your report.
To publish your report:
1.
Click at the top of the Design tab. You're prompted to select a location for publishing the report.
2.
Select a server connection and navigate its repository to the desired location.
3.
Optionally enter a new label, name (ID), and description of the report unit.
4.
Click Next. You're prompted to select a resource used by the report, including the data adapter you exported above.
5.
Click Next. You're prompted to select a data source.
6.
Select Don't use any Data Source. Since the data adapter has already been defined, the report doesn't need a separate data source.
7.
Click Finish. Jaspersoft Studio adds your report to the repository.
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While it's uploaded, Jaspersoft Studio modifies your JRXML so that it will run properly on the server. In particular, it changes how the data adapter is specified. On the server, the data adapter is uploaded to the folder you selected when you published the report.
To test your report, open the server's web UI, locate your report, and click it to run it.
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C
HAPTER
11 U
SING
T
ABLES
The Table component displays data coming from a secondary dataset. This powerful component can often make subreports unnecessary.
The Table wizard allows you to create a complex table with a few clicks. Each table cell can be simple as a text element or it can contain a set of report elements including nested tables, creating very sophisticated layouts.
This chapter contains the following sections:
•
•
•
•
11.1 Creating a Table
To create a new table:
• To have Jaspersoft® Studio autosize your table, drag the Table element any band of the report.
from the Elements palette into
•
To manually set the size of the table when you insert it, click on the Table element , but do not drag.
The cursor changes to show that it an element is selected. Click and drag in the report editing area to size and place the element. When you size the table when you first insert it, the columns fill the whole table.
Once you have placed your table in your report, use the Table Wizard to choose a new or existing dataset for your table.
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Figure 11-1 Table Wizard - New Table
To create a new dataset for your table:
1.
Select Create a Table from a new dataset and click Next. The Dataset window appears.
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Figure 11-2 Table Wizard - Dataset
2.
Name your dataset and select your option: Create new dataset from a connection or data source or
Create an empty dataset. For this example, choose the first option and click Next. You'll be prompted to select a data source and design query.
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Figure 11-3 Table Wizard - Dataset Datasource
3.
Select a data source and enter an SQL query such as: select * from orders and click Next. You'll be prompted to select dataset fields.
Figure 11-4 Table Wizard - Dataset Fields
4.
Select the fields you want in your table and add them to the Fields list on the right. Then click Next.
You'll be prompted to select the fields to group by from among your chosen fields.
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Figure 11-5 Table Wizard - Dataset > Group By
5.
Select one or more fields to group by and move them to the Fields list on the right. Click Next. You'll be prompted to select a connection.
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Figure 11-6 Table Wizard - Connection
6.
Select a data connection option. Your options are:
•
Use the same connection used to fill the master report (the option used in this example)
•
Use another connection (you'll provide a connection)
• Use an empty data source
• Use a JRDatasource expression (you'll enter a JRDatasource expression)
•
Don't use any data source or connection
7.
Click Next. You'll be prompted to choose the fields for produce table columns.
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Figure 11-7 Table Wizard - Table Columns
8.
Select one or more fields to for table columns and move them to the Fields list on the right. Click Next.
You'll be prompted to select a layout.
Figure 11-8 Table Wizard - Layout
9.
Select the layout for your table, and click Finish. The table appears where you dragged the table element in your report.
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Figure 11-9 Report Containing a Table
To use an existing dataset when creating a table:
Creating a table using an existing dataset is largely the same as creating a table using a new dataset.
1.
In the Dataset window of the Table Wizard, select Create a Table using an existing dataset.
2.
Select a dataset from the drop-down.
Figure 11-10 Table Wizard - Dataset
3.
Click Next. You'll be prompted to select the connection.
From this point the steps are the same as creating a table using a new dataset.
11.2 Editing a Table
You can edit tables on the Design tab or the Source tab. In the source the tags are labeled:
•
Table
: External border of the table.
•
Table_TH
: Table header background color and cell borders.
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•
Table_CH
: Table column background.
•
Table_TD
: Detailed cell style.
Table_TD can be nested to display alternating background color for the detail rows.
11.2.1
Editing Table Styles
You can edit the look and feel of a table by choosing elements from the Table Styles tab. To create a style, click the new style button . In the Table Wizard Layout window, you can select a style to add to your palette or create a new style to save to your palette.
Figure 11-11 Table Styles Tab
To edit a style in the palette, double-click the style and edit it in the Layout window. You can save it either as a new style or with the same name. To a edit table layout in the Design tab, right-click the table and choose
Change Table Style.
Figure 11-12 Change Table Style
You can also decide which table sections to create. If the dataset for the table contains groups, it can be convenient to select the Add Group Headers and Add Group Footers check boxes.
To delete a style right click it in the Table Styles tab and choose Delete Style.
11.2.2
Editing Cell Contents
You can edit the content, style, and size of each cell or group of cells in your table.
•
To edit table content, double-click your table. The table opens in a separate tab inside the Design tab for your report.
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Figure 11-13 Table Editing Tab
• To edit the content and style of a cell, click the cell. Switch to the Properties view where you can edit location, size, color, style, and print details for the cell.
Figure 11-14 Cell with Properties View
• To edit the size and position of a cell, or copy or delete it, right-click on the cell and select an action from the context menu.
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Figure 11-15 Cell Right-Click Menu
•
Use Shift-click to select all cells in a row.
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•
See
“Working with Columns” on page 199
for information about working with columns.
The following figure is the table created in
“Creating a Table” on page 189
, after formatting and editing:
Figure 11-16 Formatted Table
11.2.3
Editing Table Data
You can edit the dataset used for the table by right-clicking the table and selecting Dataset and Query to display the Dataset and Query Dialog.
Figure 11-17 Dataset and Query Dialog
Here you can set the dataset parameters to dynamically filter the data used in the table.
Suppose, for instance, you have a report that displays order details in a table, you can use a parameter in your
SQL query to specify the order ID to filter the order details.
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Unlike charts and crosstabs, a table always requires a subdataset. Tables cannot use the main dataset.
11.3 Table Structure
Tables consist of cells and columns. This section provides more information about working with each of these elements.
11.3.1
Table Elements
A table must have at least one column, but it can have any number. A set of columns can collected into a column group with a heading that spans several all those columns.
Each table is divided into sections similar the main document bands:
•
Table header and footer - each printed only once.
•
Column header and footer - repeated on each page the table spans. For column groups, the table can display a group header and footer section for each group and for each column.
• Detail - repeated for each record of the table. Each column contains only one detail section, and the section cannot span multiple columns.
Figure 11-18 Table Structure
In the Outline view, table sections are shown as child nodes of the table element node.
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Figure 11-19 Table in Outline View
In the Design tab, each column has a cell for each section (for example, one cell for the table header section, another for the table footer, etc.). A cell can be undefined. If all the cells of a section are undefined, the section is not printed. If the height of all the cells of a section is zero, the section is printed but is not visible in the
Design tab.
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11.3.2
Table Cells
A cell can contain any JasperReports element. When an element is dropped on a cell, Jaspersoft Studio automatically arranges the element to fit the cell size. To change the arrangement of the elements, right-click the cell (or element) and select an option from the context menu. Alternatively, you can insert a frame element in the cell and add all the required elements in that frame.
You can delete a cell by right-clicking and choosing Delete cell. If the cell is the only defined cell in the column, the entire column is removed. Similarly, if a cell is undefined, right-click it and select Add cell to create the cell. An undefined cell is automatically created when the user drags an element into it (see
“Working with Columns” on page 199
).
Edit cell properties from the Properties tab:
• The Appearance sub-tab allows you to set location, size, color, style and print details.
•
You can set cell padding as well as borders from the Properties > Borders tab.
•
Cell height defines the vertical dimension of a cell. When its value is changed, the new dimension is propagated to all the cells in the row.
11.4 Working with Columns
There are number of tools that can help you lay out the columns of a table.
11.4.1
Table Properties for Managing Columns
Use the following settings on the Table tab in Properties view to control column behavior:
• To expand the columns to fit the table width, select Fit columns to table element.
•
To configure the table so that resizing a column by moving the border means one column grows wider and the other narrower, select Resize the columns taking the space from the next one.
11.4.2
Working with Individual Columns
To edit individual columns, double-click your table. The table opens in a separate tab inside the Design tab for your report. Here you can do the following:
•
To edit cell content, double-click on the column and enter the new content in the editor. See
“Editing Cell Contents,” on page 195
for more information.
• To resize a cell, click on a cell with content to display its handles, then click and drag on any handle.
• To resize a column or row, click in an empty cell in the column. The selected row and column are outlined.
Drag the outline to resize.
•
To add and delete columns, click in the column header or footer. The selected row and column are outlined.
Select an option from the action menu. By default, when Jaspersoft Studio adds a column to a table, the new column inherits the properties of the other columns.
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Figure 11-20 Column Context Menu
•
Table cells are containers that can include other elements. To set a layout for the cell contents, click in the column header or footer and select Arrange in Container from the action menu, then select a layout option.
See
3.2.4, “Positioning Elements in Containers,” on page 47
• You can drag a column to any position, inside or outside a group. Move a column within the same section by dragging the nodes that represent the columns in outline view.
11.4.3
Column Groups
A column is composed of a set of cells. If you create a column group, a column heading can span all columns in the group. A column group can include other column groups.
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Figure 11-21 Simple Column vs. Column Group
A column group acts as a single unit when you drag it. If you drag the last column out of a column group, the column becomes a simple column and the remaining group cells are deleted.
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When you create a column group, every column section gets a group heading, as shown in
you can remove unnecessary headings. On the left of the figure there are two columns (most of the sections in the columns have only one record; one section has two records). When the columns are grouped, each column section gets a group heading, as shown in the center. However, most of the group headings are unnecessary, so their heights have been set to zero to hide them, as shown on the right.
Figure 11-22 Group headings
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12 W
ORKING WITH
C
HARTS
The Chart element in the Palette view lets you easily add charts to your reports. In Jaspersoft® Studio you can render charts inside a report two different ways. You can use the data coming from the main dataset or use a subdataset. This allows you to include many different charts in one document without using subreports.
This chapter has the following sections:
•
•
•
•
•
12.1 Datasets
When you generate a report, chart data is collected and stored within the chart's dataset.
The dataset types are:
• Pie
• Category
•
Time period
•
Time series
• XY
• XYZ
•
High low
•
Value
Think of a dataset as a table. Each dataset has different columns (fields). When a new record is put in the dataset, values are added to the fields.
Every report has a main dataset defined during its creation. But sometimes we need fields that are not returned by a query from the main dataset, or fields in a different data source. The dataset element allows you to define many datasets inside a report, each with its own fields and data source. Every dataset is independent, so its fields are separated from those of the main dataset, and from those of other datasets.
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12.1.1
Creating a Dataset
1.
Right-click the report root node in the outline view and choose Create Dataset:
2.
In the Dataset wizard, name your dataset, choose Create new dataset from a connection or Data Source and click Next. The Dataset - Data Source window opens.
Figure 12-1 Dataset - Data Source Window
3.
Select Sample DB.
4.
Enter the following query: select * from orders
5.
Click Next. The Dataset - Fields window opens.
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Figure 12-2 Dataset - Fields
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6.
Select the dataset fields you want and move them to the Fields list on the right and click Finish. The dataset you created appears in the Outline view.
Figure 12-3 GroupData Data Set
12.2 Creating a Simple Chart
This section shows you how to use the Chart tool to build a report containing a Pie 3D chart and explore chart configuration.
To add a chart to a report:
1.
Create a new report using the Sugar CRM data source.
2.
Use this query to display the count of orders in different countries: select COUNT(*) as orders, shipcountry from orders group by shipcountry
3.
Drag the fields from the Outline to the Detail band to create a small table of values to display in the chart.
Figure 12-4 Initial Report Design
4.
Expand the Summary band to 378 pixels.
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Figure 12-5 Summary Band Properties
5.
Drag the Chart tool from the Palette into the Summary band. The Chart Wizard opens.
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Figure 12-6 Chart Wizard
6.
Select the Pie 3D Chart and click Next.
7.
Accept the default configuration and click Finish.
8.
Expand the chart to fit the Summary band.
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Figure 12-7 Chart in Summary Band
In the Design tab, the chart is a placeholder and doesn't display your data.
To configure a chart:
1.
Double click the chart. The Chart Data Configuration window opens.
Figure 12-8 Chart Wizard - Chart Data Configuration
2.
Select data to use in your chart.
The Chart Data tab shows the fields within the specified dataset. You'll find detailed descriptions of field types and their functionality in the JasperReports® Library Ultimate Guide.
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3.
Set
10 for Max slices to show For a chart of many slices, this field specifies the number to show. A chart slice labeled Other contains the slices not shown.
4.
On the Dataset tab, you can define the dataset within the context of the report.
You can use the Reset on controls to periodically reset the dataset. This is useful, for example, when summarizing data relative to a special grouping. Use the Increment on control to specify the events that trigger addition of new values to the dataset. By default, each record of the chart's dataset corresponds to a value printed in the chart. You can change this behavior and force the engine to collect data at a specific time (for instance, every time the end of a group is reached).
Set Reset on to Report since you don’t want the data to be reset, and leave Increment Type set to None so that each record is appended to your dataset.
Figure 12-9 Dataset Tab
5.
Also in the Chart Data Configuration dialog, enter an expression to associate with each value in the data source. For a Pie 3D chart, three expressions can be entered: key
, value
, and label
.
• Key expression identifies a slice of the chart. Each key expression must be a unique. Any repeated key simply overwrites the duplicate key. A key can never be null
.
• Value expression specifies the numeric value of the key.
• Label expression specifies the label of a pie chart slice. This is the key expression by default.
Next to each field, click the button. Enter the following:
Value:
$F{orders}
Label:
$F{shipcountry}
Key:
$F{shipcountry}
6.
Click Finish.
7.
Save your report, and preview it to see the result.
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Figure 12-10 Final Chart
In this chart, each slice represents a country and the shipping total for that country.
12.3 Setting Chart Properties
When you select a chart component in the Design tab, the Properties view shows Hyperlinks, Chart, and Chart
Plot tabs, in addition to the standard Appearance, Borders, and Advanced tabs.
Figure 12-11 Properties View
For more information about setting hyperlinks, see
“Anchors, Bookmarks, and Hyperlinks” on page 61
JasperReports Server takes advantage of only a small portion of the capabilities of the
JFreeChart library. To customize a graph, you must write a class that implements the following interface: net.sf.jasperreports.engine.JRChartCustomizer
The only method available from this interface is the following: public void customize(JFreeChart chart, JRChart jasperChart);
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It takes a
JFreeChart object and a
JRChart object as its arguments. The first object is used to actually produce the image, while the second contains all the features you specify during the design phase that are relevant to the customize method.
12.4 Spider Charts
Spider charts (or radar charts) are two-dimensional charts designed to plot series of values over multiple common quantitative variables by providing an axis for each variable, arranged as spokes around a central point. The values for adjacent variables in a single series are connected by lines. Frequently the shape created by these lines is filled in with color.
In Jaspersoft® Studio, spider charts are separate from the rest of the charts available in the Community Project, because they're a separate component in JasperReports Library. But you use them just as other JFree Charts.
To create the report for the chart:
1.
Open a new, blank report using a landscape template and the Sugar CRM database. Use the following query: select * from orders
Click Next.
2.
Move all the fields into the right box. Click Next and Finish.
3.
Delete all bands except Title and Summary.
4.
Drag a Static Text element into the title bar, and name your report something like “Employee Orders by
Month and Country”.
5.
Enlarge the Summary band to 350 pixels by changing the Height entry in the Band Properties view.
To create a spider chart:
1.
Drag the Spider Chart element from the Palette into your report.
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Figure 12-12 Spider Chart
2.
Select the report in the Outline view, and in the Properties view, click the Edit query, filter, and sort
options button. The Dataset and Query dialog opens.
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Figure 12-13 Filter Expression for Spider Chart
To filter your data in a Spider Chart, you must filter it in the Dataset and Query dialog.
3.
To filter data for a more readable chart, click the Filter Expression tab and enter the expression below with no manual line breaks, then click OK.
( $F{shipcountry}.startsWith("N") || $F{shipcountry}.startsWith("M") || $F
{shipcountry}.startsWith ("U") || $F{shipcountry}.startsWith ("I") ) || $F
{shipcountry}.startsWith("A") && ( $F{shipname}.startsWith( "M" ) || $F
{shipname}.startsWith( "A" ) || $F{shipname}.startsWith( "G" ) )
4.
Double-click the chart to display the Chart Data Configuration dialog.
5.
Click the Series button and create the series
$F{employeeid}
.
6.
Click the Value button and create the value
MONTH($F{orderdate})
.
7.
Click the Category button and create the category
$F{shipcountry}
.
8.
Click Finish.
To customize the look of your chart:
1.
Single-click your chart, and click the Properties tab.
2.
Click the Legend category and select True in the Show Legend drop-down menu.
3.
Use the Position drop-down, to move the legend to the left.
4.
Drag a Static Text element just to the left and above the legend. Label the legend Employee Number.
5.
Save your report. The Design tab should look like the following figure.
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Figure 12-14 Spider Chart Design
6.
Preview your report. It should look like the following:
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Figure 12-15 Spider Chart Preview
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12.5 Chart Themes
Chart themes give you full control over the style of your JFree charts. You can create a chart theme and use it in multiple reports for a uniform look. And you can update that look for all those reports simply by updating the chart theme. Jaspersoft® Studio is the supported tool for creating JFree chart themes.
To create a JasperReports chart theme:
1.
Select File > New > Other to open the Select a Wizard window.
2.
Select the Chart Themes wizard and click Next to open the New Chart Theme Wizard.
3.
Select a folder and enter a file name for your theme. The file extension must be
.jrctx
.
4.
Click Finish. The Chart Theme Designer opens.
12.5.1
Using the Chart Theme Designer
In the Outline view, expand the Chart Theme list to view the subsections of a theme design.
Figure 12-16 Chart Theme Designer Outline View
• Chart: Set properties for borders, color, background, and padding.
• Title: Set properties for position, color, alignment, padding, and font.
• Subtitle: Set properties for subtitles. These can be set to
INHERITED on the Advanced tab.
• Legend: Specify whether to show a legend and, if so, its configuration.
• Plot: Set properties for label rotation, foreground, orientation, colors, image alignment, padding, grid lines, chart outline, series stroke and colors, and display and tick label fonts.
• Domain Axis: Set properties for elements along the domain axis.
• Range Axis: Set properties for elements along the range axis.
Your settings are applied to all chart types. If you want to see one of the chart types close up, click that chart.
Click the close up view to all charts.
12.5.2
Editing Chart Theme XML
You can see and edit the chart theme XML from the Source tab. However, the XML appears as one long line.
It is better paste it into a text editor for editing.
12.5.3
Creating a JasperReports Extension for a Chart Theme
To be used in a report, the
.jrtx
file must be exported to a JasperReports extension JAR file
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To export the theme as a JAR:
1.
On the Preview tab, click . The Save As window opens.
Figure 12-17 Save As JAR
2.
Enter or select the parent folder, name the file, and name your theme. Click OK.
A dialog appears, indicating that the Chart Theme was generated.
12.5.4
Applying a Chart Theme
Add the theme to your class path to make it available in the list of themes.
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C
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13 HTML5 C
HARTS IN
C
OMMERCIAL
E
DITIONS
All editions of Jaspersoft Studio include basic charting functionality in the form of JFree Charts. Commercial editions provide more advanced HTML5 charts implemented through Highcharts.
Written in pure HTML5 and JavaScript, Highcharts offer sophisticated, interactive charts that animate automatically. Jaspersoft Studio currently supports many of the charts available in the Highcharts library.
This section describes functionality that can be restricted by the software license for Jaspersoft Studio. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
This chapter has the following sections:
•
•
•
•
Dual-Axis, Multi-Axis, and Combination Charts
•
For details about charts implemented through JFreeCharts, see
“Working with Charts” on page 203
13.1 Overview of HTML5 Charts
You can create interactive reports with HTML5 charts. And they're more attractive than the basic charts available in Jaspersoft Studio. This section shows how to build a report containing a simple HTML5 chart and how to change chart types and edit charts.
In Jaspersoft Studio HTML5 Charts work like Ad Hoc charts. Levels, for example, are the equivalent of what you would use the Ad Hoc Slider to see. Other explanations include:
• Values: Static properties.
• Expressions: Dynamic properties.
• Categories: Rows. In a pie chart, the categories are the slices.
• Measures: The same as in Ad Hoc. In a pie chart, these are the size of the slice.
• Series Contributors: In the Design tab, these are defined at the measure level. In JRXML these are defined as Series.
Before you add a chart to your report, consider the best way to display your data. The following table describes the available chart types.
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Table 13-1 HTML5 Chart Types
Icon Description
Column charts - Compare values displayed as columns
Column. Multiple measures of a group are depicted as individual columns.
Stacked Column. Multiple measures of a group are depicted as portions of a single column whose size reflects the aggregate value of the group.
Percent Column. Multiple measures of a group are depicted as portions of a single column of fixed size representing 100% of the amounts for a category. Used when you have three or more data series and want to compare distributions within categories and at the same time display the differences between categories.
Bar charts - Compare values displayed as bars
Bar. Graphically summarize and display categories of data to let users easily compare amounts or values among categories.
Stacked Bar. Multiple measures of a group are depicted as portions of a single bar whose size reflects the aggregate value of the group.
Percent Bar. Multiple measures of a group are depicted as portions of a single bar of fixed size representing 100% of the amounts for a category. Used when you have three or more data series and want to compare distributions within categories and at the same time display the differences between categories.
Line charts - Compare values displayed as points connected by lines
Line. Displays data points connected with straight lines, typically to show trends.
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Description
Spline. Displays data points connected with a fitted curve. Allow you to take a limited set of known data points and approximate intervening values.
Stacked Line. Displays series as a set of points connected by a line. Values are represented on the y-axis and categories are displayed on the x-axis. Lines do not overlap because they are cumulative at each point.
Stacked Spline. Displays series as a set of points connected with a fitted curve. Values are represented on the y-axis and categories are displayed on the x-axis. Lines do not overlap because they are cumulative at each point
Percent Line. A variation of a line chart in which each series adjoins but does not overlap the preceding series.
Percent Spline. A variation of a spline chart in which each series adjoins but does not overlap the preceding series.
Area charts - Compare values displayed as shaded areas. Compared to line charts, area charts emphasize quantities rather than trends.
Area. Displays data points connected with a straight line and a color below the line; groups are displayed as transparent overlays.
Stacked Area. Displays data points connected with a straight line and a solid color below the line; groups are displayed as solid areas arranged vertically, one on top of another.
Percent Area. Displays data points connected with a straight line and a solid color below the line; groups are displayed as portions of an area of fixed sized, and arranged vertically one on top of the another.
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Icon Description
Area Spline. Displays data points connected with a fitted curve and a color below the line; groups are displayed as transparent overlays.
Stacked Area Spline. Displays a series as a set of points connected by a smooth line with the area below the line filled in. Values are represented on the y-axis and categories are displayed on the x-axis. Areas do not overlap because they are cumulative at each point.
Percent Area Spline. A variation of area spline charts that present values as trends for percentages, totaling 100% for each category.
Pie charts - Compare values displayed as slices of a circular graph
Pie. Multiple items of a single group are displayed as sectors of a circle.
Dual-Level Pie. A variation of pie charts that present grouped values in two concentric circles; the inner circle represents the coarsest grouping level in the data. In Jaspersoft
Studio, note these rules about data configuration for dual-level pie charts:
• Only one measure is displayed (the first)
• The last row level is rendered as the outer pie
• The next to last row level is rendered as the inner pie; if only one row level is defined, the inner pie consists of a single section representing the total
Semi-Pie. Multiple measures of a group are displayed as sectors of a half-circle.
Scatter and Bubble Charts - Show the extent of correlation, if any, between the values of observed quantities.
Scatter. Displays a single point for each point in a data series without connecting the points.
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Icon Description
Bubble. Compares the relationships between three measures displayed on the x-y axis. The location and size of each bubble indicates the relative values of each data point
Multi-Axis Charts - Compare trends in two or more data sets whose numeric range differ greatly.
Multi-Axis Column. A column chart with two series and two axis ranges.
Multi-Axis Line. A line chart with two series and two axis ranges.
Multi-Axis Spline. A spline chart with two series and two axis ranges.
Combination Charts - Display multiple data series in a single chart, combining the features of a area, bar, column, or line charts.
Column Line. Combines the features of a column chart with a line chart.
Column Spline. Combines the features of a column chart with a spline chart.
Stacked Column Line. Combines the features of a stacked column chart with a line chart.
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Icon Description
Stacked Column Spline. Combines the features of a stacked column chart with a line chart.
Time Series Charts - Illustrate data points at successive time intervals. Also called Fever Chart.
Time Series Area. Displays data points over time connected with a straight line and a color below the line.
Time Series Area Spline. Displays data points over time connected with a fitted curve and a color below the line.
Time Series Line. Displays data points over time connected with straight lines.
Time Series Spline. Displays data points over time connected with a fitted curve.
Spider Charts - Display data in line or data bars arranged on a circular spider web chart. Also called a
Radar Chart.
Spider Column. Plots one or more series over multiple common quantitative variables by providing axes for each variable arranged as spokes around a central point. The column variation of spider charts displays values as bars that extend out from the central point towards the edges of the circular web. The bar's length indicates the relative value.
Spider Line. Plots one or more series over multiple common quantitative variables by providing axes for each variable arranged as spokes around a central point. The line variation of spider charts displays values as points arranged around the circular web.
The data points are joined by a line. Each point's distance from the central point indicates the relative value.
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Description
Spider Area. Plots one or more series over multiple common quantitative variables by providing axes for each variable arranged as spokes around a central point. The area variation of spider charts is similar to the line variation, but the shape defined by the line that connects each series' points is filled with color.
Heat Map. Represents data in a matrix format, using color coding to show values.
Time Series Heat Map. Represents data across time in a heat map, using color coding to show values.
Dual Measure Tree Map. Displays data as color-coded rectangles; the size of each rectangle is proportional to the first measure and the color represents the second measure.
Tree Map. Displays data as rectangles; the size of each rectangle is proportional to the measure of the data it represents. The tree map displays nested rectangles when you have more than one field; the parent rectangle represents the leftmost measure while the nested rectangles represent the current level of aggregation. Click on a parent rectangle to drill down to the nest rectangles
One Parent Tree Map. Displays data as nested rectangles; the size of each rectangle is proportional to the measure of the data it represents. The nested rectangles represent the current level of aggregation while the larger rectangle represents the parent level in the hierarchy. Click on a parent rectangle to drill down to the nest rectangles.
13.2 Simple HTML5 Charts
Before you add a chart, consider the best way to display your data. Available chart types are listed in
13.2.1
Creating an HTML5 chart
1.
Create a new report using the SugarCRM data source in the JasperReports® Server repository. See
“Accessing JasperReports Server from Jaspersoft Studio” on page 81
.
2.
Start with the query: select * from orders
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3.
Choose HTML5 Charts from the Components Pro section of the Palette, and drag it into your report.
Figure 13-1 Palette
4.
Select a chart type based on the information you want to display. See
for help.
For this example, we'll choose Pie chart.
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Figure 13-2 Chart Types
Your report now includes a sample chart. The Design tab doesn't display live data. After you configure your data for use with an HTML5 chart, you can click Preview to see the chart with your data.
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Figure 13-3 Pie Chart Example
5.
Right-click the chart, and choose Edit Chart Properties. The Chart Properties dialog includes tabs for configuring chart properties, chart data, and hyperlinks.
Figure 13-4 HTML5 Charts Properties > Chart Data > Configuration
6.
Go to the Chart Data tab and click the Configuration tab.
7.
Highlight Level1, and click Modify.
8.
Name the Expression
Country
.
9.
Click to open the Expression Editor and change the default to the shipcountry field. Click OK.
10. In the Values field, create a measure called Total Orders.
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•
The Label Expression should be
“Total Orders”
.
• The Calculation type is
DistinctCount
.
• In the Value Expression field, add the orderid field.
•
The Value Class Name should be java.lang.Integer
.
11. Click OK to close the Chart Properties dialog.
12. Save, then click the Preview tab to see your chart. To preview your chart in a web browser, choose
XHTML Preview from the Preview drop-down. HTML5 charts require XHTML for web preview.
Your HTML chart preview is interactive. Hover over a pie segment to see the exact number of orders.
13.2.2
Editing HTML5 Charts
Continue using the HTML5 pie chart from the previous example to complete the following tasks.
To edit the title of an HTML5 chart:
1.
Right-click the chart and select Edit Chart properties.
2.
Click the Chart Properties tab.
3.
Click Title and enter
Orders by Country in the text box. You can also customize alignment, color, and font.
To filter the data in the chart:
1.
Click the Chart Data tab, then click its Dataset tab.
2.
By the Filter expression text box, click to ope the Expression Editor.
3.
Filter your data set by adding a Filter expression such as:
$F{SHIPCOUNTRY}.startsWith("A") ||
$F{SHIPCOUNTRY}.startsWith ("U") ||
$F{SHIPCOUNTRY}.startsWith ("I") ||
$F{SHIPCOUNTRY}.startsWith ("S")
4.
Click Finish.
5.
Save and click Preview again to view the edited chart.
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Figure 13-5 Filtered Pie Chart
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To change chart type:
Before beginning this task, make sure your data is appropriate for the new chart type.
1.
Right-click your chart and choose Edit Chart properties.
2.
In the lower-left section of the dialog box, click the Change Chart Type button to open the HTML5
Chart type selection window. This window provides some guidance about which dataset type is used by each type of chart.
3.
For this example, choose Bar and click OK.
Jaspersoft Studio discards data that's not right for the new chart type.
4.
Click OK.
5.
Save and preview your report. Because it was originally designed as a pie chart, there's no label for the Yvalues.
To add an additional measure to a bar chart:
Editing works similarly for all charts, depending on the type of data presented.
1.
On the Design tab, right-click your chart and choose Edit Chart properties.
2.
Click the Chart Data tab, then click its Configuration tab. Because this is now a bar chart, there are sections to define Series Levels and additional measures.
3.
In the Measures section, click Add. Enter the following information:
• Name:
Average Freight
• Label Expression:
“Average Freight”
• Calculation:
Average
• Value Expression:
$F{FREIGHT}
• Value Class Name: java.lang.Integer
Click OK and Close.
4.
Save and Preview the chart. HTML charts are interactive.
To add a series to a bar chart:
1.
On the Design tab, right-click your chart and choose Edit Chart properties.
2.
Click the Chart Data tab, then click its Configuration tab.
3.
In the Series Levels section, click Add. Enter the following information:
• Name:
Year
• Expression: new java.text.SimpleDateFormat(“yyyy”).format( $F{ORDERDATE} )
• Value Class Name: java.lang.Comparable
• Order:
Ascending
Click OK and Close.
4.
Save and Preview your report. You see two measures per year, Total Orders and Average Freight, grouped by Country.
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Figure 13-6 Bar Chart with Second Measure and Series
13.2.3
Creating Hyperlinks
With HTML5 charts (Highcharts) functionality added to JasperReports, using hyperlinks in charts is similar to using JFreeCharts (regular Charts) and Fusion charts (Charts Pro). You open the chart properties, select the
Hyperlink tab, and add your link.
Because HTML5 charts are so different from other chart types supported by Jaspersoft® Studio, their chart items (bars or pie section) support hyperlinks differently than other types of chart. This section gives some basic steps for defining hyperlinks for HTML5 charts. For more detailed instructions, see
Creating Hyperlinks in HTML5 Charts,” on page 235
1.
Right-click your bar chart and select Edit Chart properties.
2.
Click the Chart Data tab, then click its Configuration tab.
3.
In the Categories Levels section, double-click Country.
4.
Click the Bucket Properties tab, and click Add.
5.
In the Property name text entry box, enter url
.
6.
Click and add the following expression:
"http://www.ask.com/web?q=" + $F{SHIPCOUNTRY}
7.
Click OK.
To add the hyperlink:
1.
Back in the Chart Data tab, click its Configuration tab.
2.
Double-click the measure Total Orders.
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3.
Click the Advanced Properties tab, then click the Hyperlink button. That provides a shortcut to the two most important properties needed to create a hyperlink.
4.
Double-click hyperlinkReference (SeriesItemHyperlink). The Edit property dialog opens with some information filled in. You customize this information to the values you need.
5.
Click the radio button for Use a bucket property value and enter
Country.url
.
6.
Click OK.
7.
Save and preview your report. In the HTML preview, click the bar for any country to open the Ask.com
page for that country.
To create hyperlinks that use expressions:
Bucket-level properties are the only place where you can create expressions to be used with your link. If you're not using an expression, you must either use static values or reference a bucket level property.
1.
Identify the series you want to use for your link.
2.
Create a bucket property for that series. For example, if you are using a pie chart, the category bucket may have a property called myUrl which contains your URL built with the category value.
This can be done in Edit Chart Properties > Chart Data > Configuration.
3.
In the Categories Levels section, click Add.
4.
Click the Bucket Properties tab, and click Add.
5.
Create the myUrl property, then click OK.
6.
Next, Identify the measure to which you need to add a link.
This can be done in Edit Chart Properties > Chart Data > Configuration.
7.
In the Measures section, click select the measure you want to link to, and click Modify.
8.
In the advanced properties of your measure click Hyperlink.
This creates a couple of properties. Edit them by assigning the proper value (again, you need to either use static values or reference a bucket level property).
To add a ReportExecution hyperlink:
If you want a ReportExecution hyperlink, you need to rename one of the measure's advanced properties (see step
4 in the previous procedure) to _report and enter the corresponding value, and if you need to pass parameter values you also need to add them as measure properties.
For more information about setting hyperlinks, see
“Anchors, Bookmarks, and Hyperlinks” on page 61
13.2.4
Setting Advanced Options for HTML5 Charts
You can add or edit advanced options for HTML5 Charts using the Chart Properties dialog. This section shows how to prevent users from changing chart types in reports you upload to JasperReports® Server.
When you create an HTML5 chart in Jaspersoft® Studio and upload it to JasperReports® Server, users may see a Canvas Options icon . Clicking this icon displays a Chart Types... option that allows the user to select a different chart type. You can disable this option at any level – for the chart, for the report, or for this instance of Jaspersoft® Studio.
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To disable this option for a chart:
1.
Right-click on the chart in the Design or Outline view and select Edit Chart Properties.
2.
In the Chart Properties dialog, click Show Advanced Properties, then click Add.
The Chart Property dialog opens.
3.
Enter the following information:
• Property name: com.jaspersoft.jasperreports.highcharts.interactive
• Property value: false
4.
Click OK and then click OK again.
Like many advanced charting options, this option can be set at a higher level. If you set an option at multiple levels, the lowest level is the one that is applied.
• To disable this option for a report, click on the report's root node in Outline view and make sure the
Properties view is displayed. In the Properties view, on the tab, select Advanced > Misc > Properties and click ... to open the Properties Dialog. Enter the values shown above and click OK twice to apply the setting.
•
To disable this option Jaspersoft® Studio, select Window > Preferences from the menu. In the Preferences dialog box, select Properties and click Addto open the Properties Dialog. Enter the values shown above and click OK twice to apply the setting.
You can also set this particular option in JasperReports® Server. See the JasperReports® Server Administrator
Guide for more information.
13.3 Scatter Charts
Scatter charts plot two or more data series as points. The charts are intended to show raw data distribution of the series. The data is represented as follows:
1.
The first data series is represented as the x values.
2.
The second data series is represented as correlated y values.
3.
Any additional data series are plotted as y values correlated to the x values provided by the first series.
As a result, a scatter chart always displays one less plot than the number of data series included.
Now let's create a scatter chart that shows maximum and average freight in each city for each year.
To create the report for the chart:
1.
Open a new, blank report using the SugarCRM database and the query: select * from orders
Click Next.
2.
Move all the fields into the right box. Click Next then Finish.
3.
Delete all bands except for Title and Summary.
4.
Enlarge the Summary band to 500 pixels by changing the Height entry in the Band Properties view.
To create the chart:
1.
Give your report a title like “Maximum and Average Freight in Years for City”.
2.
Drag the HTML5 Charts element into the summary band, and select Scatter.
3.
In the Outline view, right click the chart element, and choose Edit chart properties.
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Figure 13-7 Scatter Chart Properties
4.
In HTML5 Chart Properties > Chart Data > Configuration create a Category with the following information:
• Name:
ShipCountry
• Expression:
$F{SHIPCOUNTRY}
• Value Class Name: java.lang.String
• Order:
Ascending
Click OK.
5.
Create a second Category with the following:
• Name:
ShipCity
• Expression:
$F{SHIPCOUNTRY}
• Value Class Name: java.lang.String
• Order:
Ascending
Click OK.
6.
Create a Series with the following:
• Name:
Orderdate Year
• Expression:
YEAR($F{ORDERDATE})
• Value Class Name: java.lang.Integer
• Order:
Ascending
Click OK.
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7.
Add a Measure for maximum freight:
• Name:
Max Freight
• Label Expression:
“Max Freight”
• Calculation:
Highest
• Value Expression:
${freight}
• Value Class Name: java.math.BigDecimal
Click OK.
8.
Add a Measure for average freight:
• Name:
Average Freight
• Label Expression:
“Average Freight”
• Calculation:
Average
• Value Expression:
${freight}
• Value Class Name: java.math.BigDecimal
Click OK.
To change the position or layout of the legend:
230
Figure 13-8 Legend Properties
1.
Open HTML5 Chart Properties and click the Chart Properties tab.
2.
Highlight Legend.
3.
Check the boxes for Show Legend and Floating Legend.
4.
Use the drop-down menus to arrange the legend to appear in the top left by setting Offset X and Offset Y to appear within the plot area.
Click OK.
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To add a border to the chart:
1.
Open HTML5 Chart Properties and click the Chart Properties tab.
2.
Click the arrow next to Chart and highlight Borders and Plot Area.
3.
Create a border for your chart by using the arrows next to Plot Border Width or by typing the number of pixels.
4.
Select a Border Color, Border Radius, and Border Width and click OK.
Figure 13-9 Border Properties
5.
Save and preview your report.
Figure 13-10 Scatter Chart
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13.4 Dual-Axis, Multi-Axis, and Combination Charts
Dual- and multi-axis charts are useful when you want to plot multiple chart types on the same chart or use two different scales for each y-axis. This enables you to easily compare data items with very different scales.
Similarly, combination charts are used to display multiple data series in a single chart that combines the features of two different charts.
In this example, we create a column spline chart that plots freight and orders per country, per year.
To create the report for the chart:
1.
Open a new, blank report using the SugarCRM database and the following query: select * from orders
Click Next.
2.
Move all the fields into the right box. Click Next and Finish.
3.
Delete all bands except for Title and Summary.
4.
Enlarge the Summary band to 500 pixels by changing the Height entry in the Band Properties view.
To create the chart:
1.
Drag the HTML5 Charts element into the summary band, and select ColumnSpline.
2.
Right-click the chart and select Chart Properties > Chart Data > Configuration.
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Figure 13-11 Configuration for Chart Data
3.
Create a Category with the following:
• Name:
Country
• Expression:
$F{SHIPCOUNTRY}
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• Value Class Name: java.lang.String
• Order:
None
Click OK.
4.
Create a Series with the following:
• Name:
Year
• Expression: new java.text.SimpleDateFormat ("yyyy").format( $F{ORDERDATE} )
• Value Class Name: java.lang.Comparable
• Order:
Ascending
Click OK.
5.
Add a Measure for freight values:
• Name:
Freight Values
• Label Expression:
"Freight"
• Calculation:
Count
• Value Expression:
$F{FREIGHT}
• Value Class Name: java.lang.Integer
Do not click OK yet. The next step shows how to specify that this measure should be used for columns.
6.
Go to Advanced Properties for the measure you just created and click Add to specify the series type.
Figure 13-12 Edit Advanced Properties for Freight Values
7.
Enter the following values. The support constant values are column
, line
, and spline
:
• Contributor:
SeriesProperty
• Property Name: type
• Use Constant Value: column
Click OK, then click OK again.
8.
Add a second Measure for orders:
• Name:
Total Orders
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• Label Expression:
“Total Orders”
• Calculation:
DistinctCount
• Value Expression:
$F{ORDERID}
• Value Class Name: java.lang.Integer
Do not click OK yet. The next step shows how to specify that this measure should be used for the spline.
9.
Go to Advanced Properties for the measure you just created and click Add to specify the series type
(available options are column
, line
, and spline
):
• Contributor:
SeriesProperty
• Property Name: type
• Use Constant Value: spline
Click OK, then click OK again.
10. To see fewer countries in your chart, select Edit Chart Properties > Chart Data > Dataset.
11. Add a Filter expression such as:
$F{SHIPCOUNTRY}.startsWith("A") ||
$F{SHIPCOUNTRY}.startsWith ("U") ||
$F{SHIPCOUNTRY}.startsWith ("I")
Click OK.
12. To change the position or layout of the legend:
234
Figure 13-13 Legend Properties
a.
Go to Chart Properties > Chart Properties.
b.
Click the down arrow next to Legend on the left.
c.
Highlight Items.
d.
Arrange the Items Layout to be Horizontal.
e.
Click OK.
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13. Save and preview your report. It should look like the following figure.
Figure 13-14 Column Spline Chart
13.5 Hyperlinks in HTML5 Charts
This section describes functionality that can be restricted by the software license for Jaspersoft Studio. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
Hyperlinks in HTML 5 charts are created by a different process than that described in
Bookmarks, and Hyperlinks,” on page 61
To follow a link in an HTML 5 chart, the user clicks a chart component that represents a measure. This hyperlink is created by a specific extension to that chart component, which evaluates properties of the measure.
13.5.1
Creating Hyperlinks in HTML5 Charts
1.
Create an empty report using the Sample DB data adapter and the query:
SELECT * FROM ORDER
2.
Add an HTML5 Bar chart to the title band.
3.
Double click the chart to access the chart configuration, click the Chart Data tab and select the
Configuration sub-tab to setup the multi-dimensional dataset.
4.
Modify the Level 1 category by renaming it Country and setting the Expression to
$F{SHIPCOUNTRY}
5.
Click OK.
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Figure 13-15 Editing Categories in the Chart Data Configuration Window
6.
On the Configuration tab of the Chart Properties dialog, select the default value in Measures and click
Modify.
7.
Change the measure to count the number of orders as shown below:
Figure 13-16 Editing the Measure to Count Orders
8.
Click OK twice.
At this point the chart is configured, run the report to test it.
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Figure 13-17 Successful Test of the Example Report
Now, let's configure the hyperlink.
9.
In design mode, double click the chart and again click the Chart Data tab and select the Configuration subtab.
10. Select the measure # of orders for editing.
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Figure 13-18 Editing the Number of Orders a Second Time
11. Click Advanced properties, then the Hyperlink button.
Jaspersoft Studio creates the hyperlink's basic property configuration: hyperlinkType
, hyperlinkTarget
, and hyperlinkReference
.
12. Double-click hyperlinkReference
. You'll see the Edit property dialog, which defaults to a constant: http://www.jaspersoft.com
Click OK.
Figure 13-19 Editing the Property Definition for hyperlinkReference
13. Preview your chart using the interactive report viewer to see that the columns are actually clickable and point to http://www.jaspersoft.com
Figure 13-20 Previewing the Report
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Property values can come from a static value, a bucket property value (explained in
Properties and Hidden Measures” on page 239
) or from the value of a measure (which lets us create values for
our hyperlink, like the URL, combined with using hidden measures, to create an interesting user experience).
13.5.2
Working with Bucket Properties and Hidden Measures
Bucket properties are user defined key/value pairs associated with a category or series level. The user can name the property and define the value using an expression.
Figure 13-21 Defining Bucket Properties for HTML5 Chart Hyperlinking
Let's define a new property, called country_url
, storing a link specific to the country (something like http://en.wikipedia.org/wiki/Italy and use this link in our chart measure hyperlink definition so that, when a user clicks on a column, the link of the country that the column references is opened.
1.
Create a new bucket property for the Country category level and use the following settings:
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•
Property name: country_link
• Expression: “ http://en.wikipedia.org/wiki/ ” + SF{SHIPCOUNTRY}
2.
Open the configuration dialog of your measure, move to Advanced Properties, and double click the
HyperlinkReference property.
3.
Set the Use a bucket property value to the newly created property: country_link.
Figure 13-22 Configuring Measure Properties to set the HyperlinkReference Value
4.
Click OK.
5.
Save the report and preview. Now, when you click a column, you should link to a Wikipedia page related to our country.
Using bucket properties, you can create links connected to a dimension. In this case it was the Country dimension (the Country category), but the same approach can be used to create a link related to series.
To make this example a little bit more useful, and to see how we can really use hyperlink information form different dimensions, let's add an extra dimension called year, so the chart can display the number of orders placed in a specific country in a specific year. Then we can create a hyperlink that contains both the country and the year.
1.
Add the new dimension by creating a new series level configured as shown below:
•
Name: Year
• Expression: YEAR( $F{ORDERDATE} )
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Figure 13-23 Editing Series Level to Define Buckets
Now, for each country, the chart shows the number of orders split by year.
Figure 13-24 Bar Chart with Order Numbers Split by Year
Let's create a new measure to build our URL string. Measures are usually designed to hold numeric values, most of the time the result of some aggregation function (in our example we show the count of orders). But a measure can actually be anything; in our case it's a string built using an expression like the following:
• Name: URL Measure
• Hidden: true (it is very important to check the checkbox, because we are not going to display this measure, it would not make sense as it's not numeric)
• Calculation: Nothing
• Value Expression: "http://en.wikipedia.org/wiki/" + $F{SHIPCOUNTRY} + "/" + YEAR( $F
{ORDERDATE})
• Value Class Name: java.lang.String
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Figure 13-25 Defining the URL to Open when the Measure is Clicked
The most important things to note are:
• the measure is marked as hidden
• the calculation type is set to Nothing
• the class of the measure is String (accordingly to what the expression produces)
The expression produces a String that represent a URL with a reference to both the country and the year of the order.
Now, let's use this measure.
2.
Open the # of orders measure to edit the hyperlinkReference and set the measure we just created as the value.
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Figure 13-26 Editing the hyperlinkReference to use a Measure Value
3.
Save all and preview.
Now, each column, slice, bar, and column section in the stacked column chart points to the country and year the object is representing.
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C
HAPTER
14 W
ORKING
W
ITH THE
M
AP
C
OMPONENT
The Map element in the Palette view lets you add Google Maps to your reports. You can set the center, zoom, and scale for your map, as well as static and dynamic markers and paths. The Properties view for a map element has tabs to control appearance and map properties, set authentication for Google business license, and create markers and paths.
To add a Map component to your report:
1.
Drag the Map component from the Palette to your report. Usually, you want to add the map to a component that is included only once, such as the Title band or Summary band.
This topic contains the following sections:
•
•
Viewing Authentication Properties
•
•
•
Properties for Markers and Paths
14.1 Working with Map Properties
The Map tab in the Properties view lets you set the basic properties for the map:
1.
Select a map component in your report and click Map in the Properties view.
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Figure 14-1 Map tab in Map Properties
You can set the following map properties using the Map tab:
• Map Preview – Opens a Google Maps window. This window supports standard Google Maps functionality, such as dragging, zooming, and switching between Map and Satellite views.
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Figure 14-2 Setting a map location
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Changes to this window are reflected in the map in your report. In addition, the following actions are available:
• Address Lookup – Enter an address in the entry bar. Then press Enter or click the search button to center your map at that address. This sets the latitude, longitude and address text for your map center.
You must click to center your map.
• Right-click – Right-click on any location to display a context menu with the following options:
•
Zoom in
•
Zoom out
• Center map here – Selecting this option sets the latitude and longitude for your map center.
However, if you previously entered text for the Address, this text is not removed.
• Map Type – The Google Maps view. Options are: roadmap, satellite, terrain, and hybrid.
• Latitude – The latitude of the map center. You can type directly in the entry bar, or click expression.
to enter an
• Longitude – The longitude of the map center. You can type directly in the entry bar, or click an expression.
to enter
• Address – A String representing the address of the center. You can type directly in the entry bar, or click to enter an expression. Must be enclosed in quotes, for example, "350 Rhode Island Ave., San Francisco,
CA".
• Zoom – Integer representing the Google Maps zoom level. You can type directly in the entry bar, or click to enter an expression.
• Language – String that sets the in-map language. You can type directly in the entry bar, or click to enter an expression. Must be enclosed in quotes, for example, "ru-RU". See the Google Maps documentation for more information.
• Map Scale – Sets the size of the scale bar at the bottom of the map.
• Evaluation Time – Drop-down that lets you set the evaluation time of the map. See
for more information.
• Image Type – Drop-down that lets you set the image type to use when the map is embedded in your report.
• On Error Type – Drop-down that lets you set the type of message to display when there is an error with the map.
14.2 Viewing Authentication Properties
If you want to use a Google Maps key or business client license, we recommend that you configure these as global Jaspersoft® Studio properties. You can view the status of your Google Maps license information on the
Authentication tab.
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Figure 14-3 Authentication tab in Properties view for a map component
To configure your Google Maps license and/or version information:
1.
Select Window > Preferences to open the Preferences dialog box.
2.
Navigate to Jaspersoft Studio > Properties.
3.
To configure a property, click Add to open the Properties dialog, enter the name of the property and the property's value, then click OK. You can configure the following Google Maps APIs properties. See the
JasperReports® Library configuration reference for more information on each property:
• net.sf.jasperreports.components.map.client.id
– Specifies the client ID for Google Maps API for Business. If set, it takes precedence over the API key property. Usually works along with the signature property for signed URLs.
• net.sf.jasperreports.components.map.key
– Specifies the Google Maps API key.
• net.sf.jasperreports.components.map.signature
– Specifies the encrypted client signature for signed request URLs.
• net.sf.jasperreports.components.map.version
– Indicates which version of the Google Maps
API should be loaded.
4.
When you have specified all your properties, click OK to exit the Preferences dialog box.
Setting the property globally sets the properties when the report is run inside Jaspersoft® Studio. If you are publishing your reports to another environment, you must enable these properties in the jasperreports.properties file in your environment.
14.3 Working with Markers
A marker identifies a location on a map. You can create markers for fixed locations that are known when the report is created. You can also dynamically define markers based on locations defined in your report's data. A single map can use both static and dynamic markers, and locations can be based on data from more than one data source. This section describes:
•
•
•
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14.3.1
Marker Properties
You can set properties for each marker. The marker properties available are a subset of Google Maps' properties.
See
Table 14-4, “Marker and Path Properties,” on page 260
for more information.
14.3.2
Static Markers
Static markers are used for a fixed address or location that is known when the report is created.
To define a static marker:
1.
Open or create a report and add a map component. Make sure to set the map's center to a location near your marker. For this example, use the following coordinates:
Latitude – 37.7656842
Longitude – -122.403
2.
With the map component selected, click the Markers tab in the Properties view.
Table 14-1 Markers tab with one marker
3.
(Optional) To specify marker location using the map preview, click Map Preview in the Markers tab. You can use the map preview to perform the following tasks:
• To set a marker using an address, enter the address in the entry bar. Then press Enter or click the search button to add a marker at that address.
• To create a marker by selecting a location on the map, right-click on the location you want and select Add marker.
•
To delete a single marker, highlight the marker in the panel at the right and press Delete, or rightclick on the marker and select Delete marker.
• To clear all markers, click Delete markers at the bottom right of the window, or right-click anywhere on the map, and select Delete all markers.
•
To set the map's center, right-click on the location you want and select Center map here.
4.
To specify the marker properties by typing, click Add in the Markers tab.
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The Items dialog box opens.
5.
Make sure the Items tab is selected and click Add again.
The Marker dialog box opens.
Figure 14-4 Defining a static marker
6.
Specify a location for your marker. You can do this by entering latitude and longitude, entering an address, or defining markers on the map preview:
• Latitude and Longitude – Enter the latitude and longitude coordinates for your marker. You can type directly in the entry bar, or click values:
• Latitude – 37.833
to enter an expression. For this example, enter the following
• Longitude – -122.4167
•
Address – The address is used only if Latitude and Longitude are blank. You can type directly in the entry bar, or click to enter an expression.
7.
(Optional) Set the title for your marker, if any.
8.
(Optional) To have a new browser window or tab open with related information when a user clicks on the marker, enter the URL and select the Target type.
9.
(Optional) Set your icon type (default or custom) and icon properties:
• If you are using the default marker, you can set additional properties, such as color, label, etc. These properties are not available for a custom icon. This example uses the color 00CCFF and the label J.
250
Figure 14-5 Setting color and label for a marker
•
To use a marker icon other than the default, click Custom Icon to specify a URL that points to the image to use. Currently, we don't support loading an image directly from the repository or as a resource local to the report. Instead, the JavaScript API loads the icon from the URL. Then set additional optional properties for your marker, such as icon height, width, origin, and anchor.
10. Click OK to return to the Items dialog box.
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11. To create additional markers, click Add, enter the marker properties, then click OK to return to the Items dialog box.
12. Click OK to create your markers.
13. Once you have defined your markers, preview your report in HTML. For the example, select the Empty
Data Set for your preview.
Figure 14-6 A map with a marker
14.3.3
Dynamic Markers
The steps above define the marker as a static address known when the report was created. But it is far more useful to dynamically define the markers based on locations defined in your report's data. A single map can use both static and dynamic markers, and locations can be based on data from more than one data source.
14.3.3.1 Sample Data
In this example, we'll use a CSV file containing the following data for San Francisco landmarks. This file includes data used by markers and paths.
Table 14-2 Sample CSV Data for Markers and Paths
landmark, latitude, longitude, path, style
Fisherman's Wharf, 37.8085636, -122.409714, path1, style1
Golden Gate Bridge, , , path1, style1
Cliff House, 37.778485, -122.513963, path1, style1
Stern Grove, 37.7358667, -122.4771518, path1, style1
Stern Grove, 37.7358667, -122.4771518, path2, style2
Golden Gate Park, , , path2, style2
Union Square, 37.788527, -122.407235, path2, style2
"Willie Mays Plaza, San Francisco, CA", 37.778595, -122.38927, path1, style1
Twin Peaks, 37.7544066, -122.4476845, path2, style2
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Define the San Francisco data adapter:
1.
Create a data file with the path data you want. For this example, create a CSV file with the data provided above. Make sure to include a blank line at the end of the file.
2.
Click on the main toolbar. When prompted, navigate to the same folder as your report.
3.
Name the file SFDataAdapter.xml and click Next.
4.
Select CSV File as the data adapter type and click Next. The CSV File dialog opens.
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Figure 14-7 Creating a sample data adapter for markers and paths
5.
Name your adapter, for example, SF Landmarks Data Adapter.
6.
Click File and select the CSV file you created.
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7.
Click Get column names from the first row of the file.
8.
Select Skip the first line.
9.
Click Finish to create the adapter.
Create a dataset in your report:
1.
Right-click the root node of the report in the outline view and select Create Dataset.
2.
Name the dataset SFLandmarksDataset, make sure Create new dataset from a connection or Data
Source is selected, and click Next.
3.
Select the SFDataAdapter.xml data adapter and click Next.
4.
Click >> to select all fields and click Finish.
The dataset is created in your report.
5.
Click on the SFLandmarksDataset in outline view.
6.
In the Properties view, enter SFDataAdapter.xml in the Default Data Adapter entry box. Setting the default data adapter lets you use a different dataset from the one used in the main report. See
“Default Data Adapter ,” on page 151
for more information.
Figure 14-8 Setting the default data adapter for a dataset
14.3.4
Using a dataset to set markers on the map
1.
Add a map component to the report, or select an existing map in the Design tab.
2.
If you have not set the map center or zoom level, do so. For this example, click the Map tab in the
Properties view, and use the map preview to select "San Francisco, CA" as the center. Then enter 11 in the
Zoom field.
3.
Click the Markers tab in the Properties view.
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4.
Click Add to open the Items dialog box.
5.
Select the Dataset tab and select Use Dataset.
6.
In the Dataset Run section, select your dataset and accept the default settings. For this example, use
SFLandmarksDataset. You have already set the default data adapter for this dataset.
7.
Click the Items tab and then click Add. The Marker dialog box opens.
Figure 14-9 Using expressions to set markers from a dataset
8.
For a dataset, you typically want to use expressions for your values. For each property you want to read from the dataset, click on the entry bar, select Use Expression and enter the expression to use. For this example, use the following expressions:
•
Latitude –
$F{latitude}
• Longitude –
$F{longitude}
• Address –
$F{landmark}
You can use expressions to pass parameters to a map component dynamically. Expressions allow you to evaluate data in your dataset and use the results to populate the map. In the component's properties, properties based on expressions show f(x) next to the field.
9.
Click OK. The Items dialog box displays the markers you just created.
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Figure 14-10 Item data for markers created from a dataset
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10. Click OK. Your markers are displayed on the Marker tab of the Properties view, along with any other markers you have created.
Figure 14-11 Properties view showing both static and dynamic markers
11. Preview your report in HTML. The example below shows the markers from the sample dataset along with a static marker.
Figure 14-12 San Francisco landmarks shown on a map
14.3.5
Modifying Markers
To edit a marker:
1.
Select the map and click on the Markers tab in Properties view.
2.
Select the marker you want to change and click Edit.
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3.
To change the dataset, make sure you have set up another dataset in your report before editing the marker.
Then you can select the Dataset tab here and select the new dataset from the Dataset Run menu.
4.
To change marker properties, select the Items tab, and edit your properties.
To delete a marker:
1.
Select the map and click on the Markers tab in Properties view.
2.
Select the marker you want to delete and click Delete.
14.4 Working with Paths
You can add one or more paths to your maps. A path is defined by:
• A name that serves as a path identifier; the name must be unique in your report
•
A collection of places (points) on the map defined by latitude/longitude coordinates or addresses; these are connected to form the path
•
(Optional) A style that specifies various style configuration properties, such as line and fill color, line weight, and opacity
14.4.1
Defining Path Styles
A path style specifies the properties (for example, color and weight) of the lines between the points on your path. See
Table 14-4, “Marker and Path Properties,” on page 260
for more information. You can create a path style manually, or you can save your path styles as a dataset.
14.4.1.1 Defining Path Styles Statically
1.
Edit the map component's properties.
2.
On the Paths tab, in the Styles section, click Add.
3.
In the Style dialog box, enter the properties you want for the path. See
for more information about available properties.
4.
Click OK.
14.4.1.2 Defining Path Styles Dynamically
Table 14-3 Sample CSV Data for Path Styles
name, strokecolor, strokeopacity, strokeweight, fillcolor, fillopacity, ispolygon
"style1", "#0000FF", 0.6, 1, "#FF33FF", 0.4, true
"style2", "#FF0000", 0.8, 2, , , false
Create a data adapter for your path styles:
1.
Create a data file with the path data you want. For this example, create a CSV file with the data provided above. Make sure to include a blank line at the end of the file.
2.
Click on the main toolbar.
3.
When prompted, navigate to the same folder as your report.
4.
For this example, name the file PathStylesDataAdapter.xml and click Next.
5.
Select CSV File as the data adapter type and click Next.
6.
Name your adapter, for example, Path Styles Adapter.
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7.
Click File and select the CSV file you created.
8.
For this example, click Get column names from the first row of the fileand select Skip the first line.
9.
Click Finish to create the adapter.
Create a dataset in your report:
1.
Right-click the root in the outline view and select Create Dataset.
2.
Name the dataset and click Next. For this example, name the dataset PathStyles.
3.
Select the data adapter for your path styles (Path Styles Data Adapter) and click Next.
4.
Click >> to select all fields and click Finish.
5.
Select the dataset (PathStyles) you just created in outline view.
6.
In the Properties view, enter the filename of the data adapter (PathStylesDataAdapter.xml) in the Default
Data Adapter entry box. Setting the default data adapter lets you use a different dataset from the one used in the main report. See
10.2.3, “Default Data Adapter ,” on page 151
for more information.
Define a style using a dataset:
1.
Create your data source, a data adapter that points to it, and a dataset that uses the data adapter.
2.
Add a map component to the report, or select an existing map in the Design tab.
3.
Select the Paths tab in the Properties view.
4.
In the Styles section, click Add to open the Items dialog box.
5.
Click the Dataset tab in the Path dialog box and select Use Dataset.
6.
In the Dataset Run section, select your styles dataset (PathStyles) and accept the default settings. You have already set the default data adapter for this dataset.
7.
Select the Items tab and click Add to open the Style dialog box.
8.
For each property you want to read from the dataset, click on the entry bar, select Use Expression and enter the expression to use. For this example, use the following expressions:
• Name –
$F{name}
• Stroke Color –
$F{strokecolor}
•
Stroke Opacity –
$F{strokeopacity}
•
Stroke Weight –
$F{strokeweight}
• Fill Color –
$F{fillcolor}
• Fill Opacity –
$F{fillopacity}
•
Is Polygon–
$F{ispolygon}
9.
Click OK to return to the Items dialog box.
10. Click OK to create the style set.
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Figure 14-13 Dynamic styles on the Path tab of the Properties view for a map
14.4.2
Defining a Path Statically
To define a path using the Add button:
1.
On the Paths tab, use the Styles section to define a style to associate with the path: click Add to do so.
Style properties can be added manually or by specifying a dataset. The style name sets the style property when adding points to the path.
2.
In the Paths section, click Add to add points to the path. In the Path dialog box, for each point, specify: a.
the path name (to identify which path includes the point) b.
the latitude/longitude coordinates or the address of the point c.
additional optional properties, such as the name of a path style
Click OK to add your point.
3.
Use the Up and Down buttons to change the order in which the points appear.
4.
Preview your report in HTML to see your path.
To add points to a path using the map preview:
1.
Click Map Preview in the Paths tab.
2.
Select your path from the Paths menu. The Paths menu has the following characteristics:
• If you already have static paths defined for your map, you can select a path name from the Paths menu.
Points you create are added to the currently-selected path. You can switch between paths at any time.
•
If you have not created any static paths, then you can enter a name on this menu. If a static path already exists, you cannot create a new one.
3.
To add a point to the current path, right-click on the location you want and select Add marker.
4.
To delete a single point, highlight the marker in the panel at the right and press Delete, or right-click on the marker and select Delete marker.
5.
To clear all points from the current path, click Delete Points at the bottom right of the window, or rightclick anywhere on the map, and select Delete all markers.
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6.
To set the map's center, right-click on the location you want and select Center map here.
You can't set formatting or styles using the map preview.
14.4.3
Defining a Path Dynamically
1.
Create a CSV file, a data adapter that points to it, and a dataset that uses the data adapter. This example uses the same data as in
. Pay close attention when adding points to your data: they are connected on the map in the order that they appear in the data. If they aren't in a sensible order in the data, the path won't make sense, either.
2.
Define any styles your paths use. This example uses the styles defined in
14.4.1.2, “Defining Path Styles
3.
Add a map component to the report, or select an existing map in the Design tab.
4.
If you have not set the center or zoom, do so. For this example, click the Map tab in the Properties view, enter "San Francisco, CA" in the Address field, and enter 11 in the Zoom field.
5.
Select the Paths tab in the Properties view.
6.
In the Paths section, click Add to open the Items dialog box.
7.
Click the Dataset tab in the Items dialog box and select Use Dataset.
8.
In the Dataset Run section, select SFLandmarksDataset and accept the default settings. You have already set the default data adapter for this dataset.
9.
For each property you want to read from the dataset, click on the entry bar, select Use Expression, and enter the expression to use. For this example, use the following expressions:
•
Path Name –
$F{path}
• Latitude –
$F{latitude}
• Longitude –
$F{longitude}
•
Address –
$F{landmark}
•
Style –
$F{style}
10. Click OK. The path information is added to the Path section in the Properties view.
11. Preview your report in HTML. The following image shows the example without markers. If you added the markers earlier, they will also be visible.
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Figure 14-14 Paths on a map
14.4.4
Modifying Paths and Path Styles
To edit a path or path style:
1.
Select the map and click on the Paths tab in Properties view.
2.
Select the path or style you want to change and click Edit.
3.
To change the dataset, make sure you have set up another dataset in your report before editing the path or path style. Then you can select the Dataset tab here and select the new dataset from the Dataset Run menu.
4.
To change path or style properties, select the Items tab, and edit your properties.
To delete a path or path style:
1.
Select the map and click on the Paths tab in Properties view.
2.
Select the path or style you want to delete and click Delete.
14.5 Properties for Markers and Paths
The available properties are a subset of the properties available through the Google Maps APIs. See https://developers.google.com/maps for more information.
Table 14-4 Marker and Path Properties
Property Description
Name
String. Name used to identify the marker or path; must be unique for markers or paths in the report.
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Property
Info Window
Description
Latitude
Longitude
Address
Color
Clickable
Draggable
Visible
Z Index
Number between -90 and 90. The latitude of a location in degrees.
Number between -180 and 180. The longitude of a location in degrees.
String. The address or placeID of a location. Only used if Latitude and Longitude are not available.
String. The color of the path or marker. For best results, use hexadecimal representation, as not all Google API implementations will support color strings.
Boolean. When true, the marker or path can handle mouse events. Default is true.
Boolean. When true, a user can drag the marker or path contour. Default is false.
Boolean. When true, the marker or path is visible. Defaults to true.
Number. Index determining the order in which objects are displayed on the map. Elements with higher values are displayed in front of similar elements with lower values. Markers are always displayed in front of paths.
Properties for Markers Only
Title String. Text shown on rollover.
Url
Target
Icon
Custom Icon
String. Target URL to access when marker is clicked.
String. Target attribute specifying where to open linked document.
String. URL for the icon.
Use Custom Icon settings to use a marker icon other than the default. You must specify a
URL that points to the image to use. Currently, we don't support loading an image directly from the repository or as a resource local to the report. Instead, the JavaScript API loads the icon from the URL.
You can set additional optional properties for your marker, such as icon height, width, origin, and anchor.
Shadow
Custom
Shadow Icon
String. URL for the shadow.
Use Custom Shadow Icon settings to use a shadow icon other than the default. You must specify a URL that points to the image to use. Currently, we don't support loading an image directly from the repository or as a resource local to the report. Instead, the JavaScript API loads the icon from the URL.
You can set additional optional properties for your shadow, such as height, width, origin, and anchor.
Use Info Window settings to add an info window. You can define the window content, pixel offset, and maximum width.
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Property
Stroke Opacity
Stroke Weight
Fill Color
Fill Opacity
Is Polygon
Editable
Geodesic
Description
Label
Cursor
Flat
Optimized
String. Single character that appears on the marker. Not available for custom markers.
String. Mouse cursor to show on hover. Not available for custom markers.
Boolean. Not available for custom markers.
Boolean. Not available for custom markers.
Raise on Drag
Size
Boolean. Not available for custom markers.
String. Not available for custom markers.
Properties for Paths and Path Styles Only
Parent Style
String. Name of path style to use as a parent style. The current style inherits the parent's properties if the parent style is present in the report. Elements set locally in the current style override elements set in the parent.
Stroke Color String. Color of the stroke; for most consistent results, use hexadecimal format. Default is
#000000.
Number. The path's opacity. Number between 0 (transparent) and 1 (opaque). Default is 1.
Number. Path weight in pixels. Default
String. Color of the fill for the polygon when Is Polygon is true. Takes values hexadecimal format. Default is null.
Number. The opacity for the polygon's fill when Is Polygon is true. Number between 0
(transparent) and 1 (opaque). Default is 1.
Boolean. When true, creates a polygon (closed path) by connecting the last point on the path to the first point. Default is false (open polyline).
Boolean. When true, a user can edit the path by dragging the control points on the path line. Default is false.
Boolean. When true, dragged paths follow the great circles on the earth's surface; in this case, since the map is a projection, the lines may not appear straight. When false, paths are straight lines on the map. Defaults to false.
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Jaspersoft® Studio leverages TIBCO GeoAnalytics Maps to produce data-rich maps. This section describes their set-up and configuration, including:
•
•
Using Expressions for Properties
•
•
•
This section describes functionality that can be restricted by the software license for JasperReports Server. If you don’t see some of the options described in this section, your license may prohibit you from using them. To find out what you're licensed to use, or to upgrade your license, contact Jaspersoft.
In addition to the other types of map component that Jaspersoft® Studio supports, TIBCO GeoAnalytics Maps are also supported. These multi-layer maps are designed for use in interactive web environments, and support both markers and paths. They also support the ability to provide a street address and resolve it to the correct latitude and longitude (sometimes called geolocation).
Because these components download content from either TIBCO's service or from Google Maps, they require a connection to the Internet. While the maps themselves are freely available, using the GeoAnalytics geolocation serve to resolve street addresses requires an additional license.
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These maps are well suited to web-based environments, such as HTML export or when viewed through an interactive viewer such as JasperReports® Server; however, limitations in the underlying technology prevent some TIBCO GeoAnalytics Map features from working in static formats, such as PDF. In this case, the map is converted to an image, which is always downloaded from Google Maps instead of TIBCO's server. In addition, if the map's location is resolved from a street address, the canvas may be blank (or blue); this happens when the address's latitude and longitude aren't available.
If your target output format is something other than HTML, consider using the standard map component.
The map component consists of three layers: a map, a set of paths, and a set of markers. The lowest layer contains the map itself, rendered by your choice of providers: TIBCO Maps or Google Maps. In both cases, the image is formed of tiles retrieved from a remote server. The next two layers (first paths then markers) can contain paths and markers or shapes.
Figure 15-1 Basic structure of the TIBCO GeoAnalytics Map component
15.1 Configuring a Basic Map
To create a TIBCO Map component:
1.
First locate the component in the Palette; it uses this icon: ;drag it onto the canvas.
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At a minimum, the TIBCO Map component requires the location of the area to display, which can be defined by these manually-exclusive options: a.
The latitude and longitude of the location.
b.
The street address of the location (assuming you have a license for TIBCO GeoAnalytics geolocation services). To use this option, you must also provide credentials for TIBCO's geolocation service. You can either enter these in the Maparama Credentials section of the TIBCO map component's properties, or by defining them in the jasperreports.properties file so that they can shared across multiple reports. These properties are:
• com.jaspersoft.jasperreports.tibco.maps.customer
- the customer name used with TIBCO GeoAnalytics Maps
• com.jaspersoft.jasperreports.tibco.maps.key
- the corresponding license key for the specified user
2.
To define a location, edit the TIBCO Maps component's Location properties. Entering a latitude/longitude pair or address defines a static location. You can also use parameters to dynamically define the components location as well as all other TIBCO Map properties.
Figure 15-2 TIBCO Map Attributes
Map attributes determine how the map layer of the component is rendered. The attributes are all optional:
Property
Use Canvas true
Opacity
Max Zoom 1 - 18
Property Value
false This property refers to the way the map is rendered (by using a canvas or SVG layers)
0.0- 1.0 Level of opacity of the map.
The maximum allowed zoom
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Min Zoom 1 - 18
Repeat X true | false
Clip Offset integer
The minimum allowed zoom
Specifies whether tiles are repeated when the world's bounds are exceeded horizontally
The clip offset of the map
15.2 Using Expressions for Properties
The simplest way to define the map layer's properties is to set them to static values; however, this is a much more limited approach than using expressions to pass parameters to the component dynamically, which allows you to evaluate data in your data set and use the results to populate the map layer's properties. If you don't specify a different data set, the component uses the main dataset of the report. In the components properties, properties based on expressions are indicated by displaying f(x) next to the field, as shown below.
Figure 15-3 Map properties showing Zoom defined by an expression
To specify a different dataset to resolve the map attributes based on expressions, click the Use Dataset check box to select it, and select the dataset to use in the Dataset Run.
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Figure 15-4 Defining the Dataset to use to resolve map attribute expressions
Data Runs are used throughout Jaspersoft® Studio and its related products when a report includes a subdataset. Use a Data Run to define values for the subdataset's parameters.
15.3 Understanding Layers
Each layer in the map component controls different aspects of the final map rendered in your report:
• The maps layer defines the map tiles that are displayed by the component's image, which are determined by its location and zoom, the maximum and minimum zoom allowed in the component, and the image's opacity.
•
The marker layer defines locations on the map that display an image you select.
•
The path layer defines lines between locations on the map.
Each layer can be named uniquely; these names can be displayed in the JasperReports® Server interactive report viewer in the Layers drop down; this allows your user to select which layers to drawn.
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Figure 15-5 Layer names defined in the component can control the layers drawn in the final report
15.4 Working with Markers
Markers are points rendered on the second layer of the TIBCO Map component.
This section describes:
•
•
15.4.1
Static Markers
1.
Edit the map component's properties.
2.
On the Markers tab, click Add.
3.
Define your marker by specifying a location and icon. The list of properties for a marker includes:
• target
• string
• optional
•
_blank
• the hyperlink target for the marker
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Figure 15-6 Defining a map's markers
4.
Specify the icon as a URL that points to the image to use; it's loaded by the JavaScript API.
Jaspersoft doesn't currently support loading an image directly from the repository, or as a resource local to the report.
The location can be set by latitude/longitude coordinates or an address to be geolocated, as described above.
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Figure 15-7 A map with a marker
5.
For the addresses, set each property to form the address: country, state, zip, city, street.
Figure 15-8 Marker properties set to a static location
Marker properties include:
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Property Name Type
xoffset Numeric
(integer) yoffset anchor
Numeric
(integer)
String
Required?
Optional
Optional
Possible Values
0
0
Description
The horizontal offset of the marker icon measured in pixels
The vertical offset of the marker icon measured in pixels draggable icon.url
title hyperlink target
Boolean
String
String
String
String
Optional
Optional
Required
Optional
Optional
Optional bottom-left, bottom-right, bottomcenter false
N/A
N/A
N/A
N/A
The anchor point of the marker icon
Specifies whether users can drag the marker
URL for the icon
The ToolTip for the marker icon; works in conjunction with icon.url
The hyperlink text for the marker
The hyperlink target for the marker. The default value is _ blank.
This is a simplified example; the more common scenario is to read location data from the database.
15.4.2
Dynamic Markers
The steps above define the marker as a static address known when the report was created. But it is far more useful to dynamically define the markers based on locations defined in your report's data. A single map can use both static and dynamic markers, and locations can be based on data from more than one data source.
In this example, we'll use data from City College of San Francisco's public facilities data set that we've saved as an Excel file:
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Facilities
Airport
Civic Center
Castro
Downtown
Evans
Fort Mason
Street Address
SF International Airport, North
Access Road, Building 928
City
San Francisco
750 Eddy Street
450 Castro Street
Chinatown/North
Beach
808 Kearny Street
88 4th Street
1400 Evans Avenue
Laguna Street & Marina
Boulevard, Building B
San Francisco
San Francisco
San Francisco
San Francisco
San Francisco
San Francisco
John Adams
Mission
Ocean
Southeast
Gough Street
1860 Hayes Street
1125 Valencia Street
50 Phelan Avenue
1800 Oakdale Avenue
31/33 Gough Street
San Francisco
San Francisco
San Francisco
San Francisco
San Francisco
State Zip
CA 94128
Latitude
37.622511278000445
Longitude
-122.39519978799973
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
CA
94109 37.783008003000475
-122.42000284399973
94114 37.76168744600045
-122.43511354199973
94108 37.79551773600048
-122.40496557999973
94103 37.784588004000454
-122.40438877299971
94124 37.74169579700049
-122.38589540299972
94123 37.80001344200048
-122.43517818299972
94117 37.77385843900049
-122.4469528999997
94110 37.754794183000456
-122.42088522899968
94112 37.72408746400049
94124 37.73684564000047
-122.45231737299969
-122.39424548999972
94103 37.772268634000454
-122.42098248799971
Since the data set includes both street addresses and latitude/longitude pairs, we can explore both functions.
To use dynamic locations:
1.
Create an Excel file with the data provided above and a data adapter that points to it. Export the data adapter to the project folder; name it
CollegeFacilities.xml.
2.
In the report, create a new dataset: right-click the root in the outline view and select Create Dataset.
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3.
Right-click the new dataset and select Dataset and Query.
4.
In the Query dialog, select the CollegeFacilities.xml data adapter and click Read Fields.
5.
By default, the fields are all set as type String. To change the Latitude field to a Float, double-click in the Class Type column, click the button ellipsis..., and select java.lang.Float from the type menu. Repeat these steps to set the Longitude data type to Float.
6.
Click OK.
7.
Use the data adapter to populate the dataset. With the CollegeFacilities dataset selected in the outline view, click the Advanced tab in the Properties view, then select the property Properties and click the button ellipsis to open the properties dialog.
8.
Add a new property: net.sf.jasperreports.data.adapter
, and specify the name of the data adapter file saved earlier (CollegeFacilities.xml).
We can use this new dataset to set markers on the map.
9.
Select the map in the Design tab, click the Markers tab, and click Add.
10. Click Dataset, check the Use Dataset check box, and click Add.
11. Select the CollegeFacilities dataset and accept the defaults. Studio uses the data adapter referenced by the net.sf.jasperreports.data.adapter
property set previously for this dataset.
12. Click OK.
The dataset is added to the list of datasets we'll use for markers.
13. Click Values and create an expression for each marker property: for example, provide the title, street, city, state, country, and so forth.
Figure 15-9 Location values defined as expressions
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This example uses an icon from the web: Pink Push Pin .
14. Click OK.
15. Preview your report in HTML.
Figure 15-10 San Francisco City College facilities marked on a map
15.5 Working with Paths
Paths are lines rendered on the third layer of the TIBCO Map component. A path is defined by:
•
A name that serves as a path identifier in case different paths will appear on the map
• A style that specifies various style configuration properties, such as line and fill color, line weight, and opacity
• A collection of places (points) on the map defined by latitude/longitude coordinates or addresses; these are connected to form the path
To define a path in Jaspersoft® Studio:
1.
On the Paths tab, use the Styles section to define a style to associate with the path: click Add to do so.
Style properties can be added manually or by specifying a dataset. The style name sets the style property when adding points to the path.
2.
Use the Paths section to add points to the path: click Add in this UI area to do so. For each point, specify: a.
the path name (to identify which path includes the point) b.
the style property (to identify the style associated with this path)
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the latitude/longitude coordinates or the address of the point
Like styles, points can be added manually or by using a specific dataset. Pay close attention when adding points: they are connected on the map in the order that they are declared in the JRXML file. If they aren't declared in a sensible order, the path won't make sense, either.
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UERIES
Jaspersoft Studio provides tools to help you define report fields and create a proper query (if a query is needed to fetch the report data). You'll find these tools in the Dataset and Query dialog.
It also provides a drag-and-drop query builder for easily creating SQL queries. This allows users who aren't familiar with SQL to quickly join tables and produce complex data filters and where conditions. SQL Builder also provides a way for skilled users to explore the database and list the metadata such as schemas and available tables.
This chapter contains the following sections:
•
Using the Dataset and Query Dialog
•
Working with the Query Builder
16.1 Using the Dataset and Query Dialog
Click the Dataset and Query icon .
When working with a sub-dataset, open the dialog by right-clicking the dataset name inside the Outline view, and selecting Dataset and Query....
Figure 16-1 Right-Click Menu
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Use the Dataset and Query dialog to:
• Select a data adapter with which to configure the dataset. Usually a data adapter is selected, but you can change it.
•
Select a query language for the dataset you're editing. (This can be the main dataset or a sub-dataset that populates a chart or a table.)
•
Enter a query. A tool is available for several languages including SQL, XPath and JSON.
• Retrieve the fields from the selected Data Adapter. These can be provided directly by the Data Adapter or by executing the query and reading the response metadata.
•
Add, edit, or remove fields and parameters.
•
Edit sort options.
• Provide an expression to filter dataset records.
• Preview your data, if supported by the selected data adapter.
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Figure 16-2 Data Preview Tab
Defining all the fields of a report by hand can be tedious. JasperReports requires all report fields to be named and configured with a proper class type. The Dataset and Query dialog simplifies the process by automatically discovering the available fields provided by a data adapter, without using a query. To execute a query you need to use the proper data adapter: for example to execute an SQL query you must use a JDBC data adapter. The
Read Fields button starts the discovery process: the fields found are listed in the Fields tab and added to the report. Click OK to close this window.
Some query languages, like XPath, do not produce a result that resemble a table, but more complex structures that require extra steps to correctly map result data to report fields. An example of this is the multidimensional result coming from MDX results (MDX is the query language used with OLAP and XML/A connections): in this case each field is mapped by specifying an expression stored in the field description. For some languages,
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16.2 Working with the Query Builder
When your language is SQL, the Query Builder is called the SQL Builder. The tool requires a JDBC data adapter.
The builder has two parts. On the left a tree-view shows all the available schemas and relative objects like tables, views, etc. found by using the JDBC connection provided by the data adapter. On the right there are three tabs that present the query in different ways.
The first Text tab contains a text area for writing a query. You can drag tables and other objects from the metadata view into the text area, so you don't have to write the entire qualified names of those objects.
Although the SQL builder doesn't support arbitrary complex queries (which may use database-specific syntax), this text area can be used for any supported query, including stored procedures if supported by the report query executer.
If a query has already been set for the report, this text area shows it when the query dialog is open.
Use the Outline and Diagram tabs to visually build the query. The current version of Jaspersoft Studio doesn't support back-parsing of SQL. For this reason, you should use Outline and Diagram editing mode only to create new queries, otherwise the new query replaces any existing query. If you do attempt to overwrite an existing query, Jaspersoft Studio alerts you.
Figure 16-3 Query Overwrite Warning
16.2.1
Query Outline View and Diagram View
The purpose of SQL is to select data from the tables of the database. SQL allows you to join tables, so that you can get data from more than one table at a time.
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Figure 16-4 Outline View
The Outline view is a good tool for people with a basic understanding of SQL. It works in conjunction with the Diagram view, which represents the simplest way to design a query. In the outline view the query is split in its main parts introduced by the relative keyword. Those parts include:
SELECT introduces the portion of query where are listed all the columns that form a record of the final result set
(which is basically a list of records).
FROM contains the list of tables involved in our queries and if specified the rules to join that tables.
WHERE is the portion of query that describes the filters and conditions that the data must satisfy in order to be part of the final result, conditions can be combined by using the
OR and
AND logical operators and can be aggregated by using parentheses.
GROUP BY indicates a set of fields used to aggregate data and is used when an aggregation function is present in the
SELECT
. For example, the following query counts the number of orders placed in each country.
SELECT count(*) as number_of_orders,
Orders.country
FROM
GROUP BY
Orders
Orders.country
HAVING works in a i bit like
WHERE
, but it's used with aggregate functions. For example the following query filters the records by showing only the countries that have at least 40 orders:
ORDER BY specifies a set of columns for sorting the result set.
SELECT count(*) as number_of_orders,
Orders.country
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FROM
Orders
GROUP BY
Orders.country
HAVING count(*) > 40
The
Diagram view shows the tables in the query with the relative join connections and the selected fields. This view is very useful especially to select the relevant fields and easily edit the table joins by double-clicking the connection arrows.
Figure 16-5 Diagram View
16.2.2
Selecting Columns
You can drag columns from the database explorer into the
SELECT node or other nodes in the outline view.
Make sure the columns you select are from tables present in the
FROM part of your query.
You can also select fields by their check boxes in the diagram view.
Finally you can add a column by right-clicking the SELECT node in the outline view and selecting Add
Column. A new dialog prompts you to pick the column from the those in the tables mentioned in the
FROM clause. If a column you want to add is not a table column, but a more complex expression, for instance an aggregation function like
COUNT(*)
, add it by right-clicking the
SELECT node in the outline view and selecting
Add Expression.
When a column is added to the query as part of the
SELECT section, you can set an alias for it by doubleclicking it.
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Figure 16-6 Setting an Alias
Aliases are useful when you have several fields with the same name coming from two different tables.
16.2.3
Joining Tables
You can join tables you've added by selecting shared fields. You can create the relationship the Diagram view by dragging a column of the first table onto the column of the table you're joining to. You can edit this type of join by double-clicking the join arrows. Currently a single join condition is supported.
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Figure 16-7 Column Dialog
You can also edit joins in the outline view by right-clicking a table name and selecting Add or Edit Table
Join.
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Figure 16-8 Join Table
16.2.4
Data Selection Criteria (WHERE Conditions)
Use a
WHERE clause to specify the criteria to be for each record's part in the query result. Right click the
WHERE node in the outline view and select Add Condition to add a new condition.
If you know in advance which column should be involved in the condition, you can drag this column on the
WHERE node to create the condition. In both cases the condition dialog appears.
Figure 16-9 Add Condition
You can organize conditions by creating condition groups, and then combining them with or and and operators. At least one condition must be true for an
OR group. All conditions must be true for the
AND operator.
You can double-click to change the value of either of these group operators.
If the value of a condition is not fixed, you can express it by using a parameter with the expression:
$P
{parameter_name}
.
When using collection type parameters, the
$X{} expressions allow you to use operators like
IN and
NOT IN
, which determine whether a value is present in the provided list. The
$X{} syntax also allows you to use other operators like
BETWEEN for numbers, Date Range and Time Range type of parameters. See
Operators and Object Methods,” on page 35
for more information about the
$X{} syntax.
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16.2.5
Acquiring Fields
When your query is ready, it's time map the columns of the result set to fields of the report. When using SQL, this is a pretty straight forward operation.
Press the Read button to execute the query. If the query is valid and no errors occur Jaspersoft® Studio adds a field for each column with the proper class type to the fields list.
16.2.6
Data Preview
Use the Data Preview tab to generate a ghost report that maps the fields to the fields tab using your query and selected Data Adapter. This tool is independent of the query language and a good way to debug a query or check which records the dataset returns.
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Figure 16-10 Data Preview Tab
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C
HAPTER
17 R
EPORT
B
OOKS
A report book is a single .jrxml that bundles multiple reports into a single object. Like a single report, a report book is driven by a data set that allows you to define the flow of the book’s sections, and the parts within those sections.
This section provides a walkthrough of the report book creation process, using the sample.db included with your JasperReports® Server installation. You'll create a cover page, table of contents, and subreports to build into your report book.
Creating a report book has a number of separate tasks, including:
•
Creating the Report Book Framework
•
Creating and Adding Reports to the Report Book
•
•
Configuring the Table of Contents
•
•
17.1 Creating the Report Book Framework
The first step is to create your report book jrxml. This is the framework in which you organize the book’s parts.
To create the report book framework:
1.
In Jaspersoft Studio, click and select Other... to open the Wizard selection window.
2.
Expand the Jaspersoft Studio folder, select Jasper Report, and click Next.
3.
In the Categories panel, select Report Books.
4.
Click to select Wave Book then click Next.
5.
In the Project Explorer, select the My Reports folder, change the file name to
Sample_Book.jrxml
, and click Next.
6.
In the Data Source window, select a data adapter. For our walkthrough, use Sample DB – Database
JDBC Connection.
7.
In the text panel, enter the following query then click Next: select distinct shipcountry from orders order by shipcountry
8.
In the Fields window, move SHIPCOUNTRY from the Dataset Fields panel to the Fields panel and click
Next.
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9.
In the Book Sections window, make sure all three options are selected:
•
Create Cover Section
•
Create Table of Contents
•
Create Back Cover Section
10. Click Finish.
Your Report Book project opens in Jaspersoft Studio.
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Figure 17-1 Report Book Framework
In Jaspersoft Studio, open the Project Explorer and expand the My Reports folder. There, you can see the jrxml files you just created:
• Sample_Book_backcover.jrxml
•
Sample_Book_cover.jrxml
•
Sample_Book_toc.jrxml
• Sample_Book.jrxml
Sample_Book.jrxml is open in the main Design tab. This is the file in which you'll organize the report parts.
You'll notice three groups for the book part types:
• Cover and Table of Contents contains Sample_Book_cover.jrxml and Sample_Book_toc.jrxml.
• Content is currently empty.
• Backcover contains Sample_Book_backcover.jrxml
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When you select each these book parts in the design window, you can view and edit their properties in the
Properties View, as you can with standard reports and subreports.
Next, you'll create a subreport and add it to your report book.
17.2 Creating and Adding Reports to the Report Book
Now that your framework is established, you can create reports and/or subreports to include in your book.
You create a report or subreport as described here, and in
. You can also include previously-created reports. See
Adding a Report to the Report Book
For our walkthrough, you'll create a report, then add it to your report book.
17.2.1
Creating a Report for the Report Book
To create a report:
1.
Click and select Other... to open the Wizard selection window.
2.
Expand the Jaspersoft Studio folder and select Jasper Report. Click Next.
3.
In the Report Templates window, scroll to and select the Leaf Green template. Click Next.
4.
In the Report file window, select the MyReports folder and change the Leaf_Green.file name to
Content_
Page_One.jrxml
. Click Next.
5.
In the Data Source window, select Sample DB – Database JDBC Connection, and enter the following query:
Select * from orders order by shipcity
6.
Click Next.
7.
In the Fields window, move the following Dataset fields to the Fields panel on the right to include then in your subreport:
•
ORDERID
•
CUSTOMERID
•
FREIGHT
•
SHIPCITY
•
SHIPCOUNTRY
8.
Click Next.
9.
In the Group By window, move the SHIPCITY dataset field into the Fields pane.
10. Click Finish. The Content_Page_One.jrxml appears in the Design tab.
11. In the Project Explorer, right-click Content_Page_One.jrxml and select Compile Report. The resulting file, Content_Page_One.jasper, appears in the Project Explorer.
17.2.2
Adding a Report to the Report Book
Now you can add this new subreport to your report book. During this process, you'll assign a data source for executing the subreport.
To add a report to your report book:
1.
Double-click the Sample_Book.jrxml in the Project Explorer to open it in the Design tab.
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2.
Drag Content_Page_One.jasper from the Project Explorer into the Content group. In the Connection dialog, click Finish.
3.
In the Design tab, click to select Content_Page_One.jasper.
4.
In the Properties view, click the Data button at the top, then click Edit Parameters.
5.
In the Report Part Parameters window, click Add to open the Parameter Configuration dialog.
6.
In the Parameter Name field, enter
REPORT_CONNECTION
.
7.
Click to open the Expression Editor.
8.
In the first column, select Parameters.
9.
In the center column, double-click REPORT_CONNECTION parameter connection to add it to the editor field, and click Finish. The expression appears in the Parameter Configuration field.
10. Click OK and confirm the parameter has been added to the Part Parameters list, then click Finish.
17.3 Refining the Report Book
You can further refine the report data to make your report easier to use, by sorting on additional fields, and by adding pages to the book to introduce each of the sorted sections.
17.3.1
Sorting on Additional Fields
At this point, you could run the report, but the data it returns is sorted by City, which you established in
Creating and Adding Reports to the Report Book
. To better organize the data, you can now modify the report
query to sort by Country as well.
To add a filter to a report in a report book:
1.
In the Project Explorer, double-click to open content_page_one.jrxml in the designer.
2.
In the Outline view, right-click the Parameters folder and select Create Parameter.
3.
In the Properties view, change the name to country
.
4.
In the Designer, click and modify the query to say:
Select * from orders where shipcountry = $P{country} order by shipcity
5.
Click OK to return to the designer.
6.
Click the Preview tab at the bottom of the designer to open Input Parameters.
7.
In the country field, enter
Italy and run the report. The report preview displays only data related to Italy, sorted by city.
8.
Click the Design tab, then save and compile your report.
9.
Open Sample_Book.jrxml in the design tab, and click to select Content_Page_One.jasper in the
Content group.
10. In the Data tab in the Properties view, click Edit Parameters to open the Report Part Parameters window, and click Add.
11. In the Parameter Configuration Dialog, enter country as the parameter name.
12. Click to open the Expression Editor, and click Fields in the left panel.
13. Double-click SHIPCOUNTRY Field String to add it to the expression, then click Finish.
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14. Click OK in the Parameter Configuration Dialog, then Finish in the Report Part Parameters window.
17.3.2
Adding Section Introductory Pages
You can insert pages in your reports to introduce each section of data, as determined in
. These pages can include text, images, charts, or any number of other elements, pulled from a data source.
We'll place an introductory page before each country section and include the country name and a chart representing the number of orders for each city in the country.
To add introductory pages to your report:
1.
Click to open the Wizard selection window.
2.
Expand the Jaspersoft Studio folder and select Jasper Report. Click Next.
3.
In the Report Templates window, select the Blank A4 Landscape template. Click Next.
4.
In the Report file window, select the MyReports folder and change the Blank_A4_Landscape.jrxml file name to
Country_Intro.jrxml
. Click Next.
5.
In the Data Source window, select Sample DB – Database JDBC Connection, and enter the following query and click Next: select count(*) c, shipcity from orders group by shipcity
6.
In the Fields window, add the following Dataset fields to the Fields panel and click Next.
•
C
•
SHIPCITY
7.
In the Group By window, click Finish. The Country_Intro.jrxml appears in the Design tab.
Now you can determine what data appears on the intro pages.
To modify the data on the intro pages:
1.
With Country_Intro.jrxml open in the Design tab, click the Title band and increase its height to 350 pixels.
2.
In the Outline view, right-click Parameters and select Create Parameter.
3.
In the Properties view, change the Name from Parameter 1 to
Country
.
4.
In the Designer view, click
5.
Modify the query to say: to open the Dataset and Query Dialog.
select count(*) c, shipcity from orders where shipcountry = $P{Country} group by shipcity
6.
Click OK.
7.
Save Country_Intro.jrxml.
8.
In the Outline view, drag Country from the Parameters list into the Title band.
9.
Click the Country parameter ($P{Country}).
10. In the Properties view, click Text Field. Increase the font size to 26.
11. Click outside the parameter element.
Next, you can add a chart to the intro pages, that provides a graphical representation of the data in the section.
To add a chart to the intro pages:
1.
In the Palette view, select and drag HTML5 Charts from the Components Pro section and place it under the parameter element in the designer view.
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2.
In the Chart type selection dialog, scroll down and select Pie. Click OK.
3.
Resize the pie chart to fit the space. See
for more information.
4.
Double-click the chart element to open the Chart Properties.
5.
Click the Chart Data tab, then click the Configuration tab.
6.
In the Categories Levels section, double-click Level1.
7.
In the Expression text box, delete "Change Me" and click .
8.
Select Fields from the first column, and double-click SHIPCITY Field String to add it to the expression.
9.
Click Finish.
10. Update the Name field to
"City" and click OK.
11. Back in the Chart Properties dialog, update the following information:
• Name:
Number of orders
.
• Label Expression:
"Number of orders"
• Calculation: Nothing
• Value Expression: Delete new Integer1, click
12. Click OK, then save the report.
13. Compile Country_Intro.jrxml to create a .jasper file.
, and double-click C Field Long, then click Finish.
Now, you can add the Country_Intro page to your book, and configure it to display the correct data.
To add and configure the intro page::
1.
Open Sample_Book.jrxml in the Design tab.
2.
Drag Country_Intro.jasper from the Project Explorer into the Content group of Sample_Book.jrxml, and place it to the left of the Content_Page_One.jasper file.
3.
In the Design tab, click to select Country_Intro.jasper.
4.
In the Properties view, click Edit Parameters.
5.
In the Report Part Parameters window, click Add to open the Parameter Configuration dialog.
6.
In the Parameter Name field, enter
REPORT_CONNECTION
.
7.
Click to open the Expression Editor.
8.
In the first column, select Parameters.
9.
From the center column, double-click REPORT_CONNECTION parameter connection to add it to the editor field, and click Finish. The expression appears in the Parameter Expression field.
10. Click OK and confirm the parameter has been added to the Part Parameters list.
11. Click Add to open the Parameter Configuration dialog again.
12. In the Parameter Name field, enter
Country
.
13. Click to open the Expression Editor.
14. In the first column, select Fields.
15. From the center column, double-click SHIPCOUNTRY Field String to add it to the editor field, and click
Finish. The expression appears in the Parameter Expression field.
16. Click OK and confirm the parameter has been added to the Part Parameters list, click Finish.
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17.4 Configuring the Table of Contents
Your report book is organized and the reports are populated with data. Now you can configure your Table of
Contents so your users can find the information they need.
The Table of Contents is derived from a special data source created by JasperReports and included as a property in the report book. This property, net.sf.jasperreports.bookmarks.data.source.parameter
, collects bookmarks from the report book's content pages. So you'll need to add bookmarks to your reports.
To add bookmarks:
1.
Open Country_Intro.jrxml in the Design tab.
2.
Click the Country parameter in the Title band.
3.
In the Properties view, click Hyperlink.
4.
Expand the Anchor and Bookmark section.
5.
Click to open the Expression Editor, and click Parameters.
6.
Double-click Country Parameter String to add it to the expression, then click Finish.
7.
In the Properties view, change the Bookmark Level to 1.
8.
Click outside the design space in the Design tab, then click Report in the Properties view.
9.
Click to enable Create bookmarks.
10. Open the Content_Page_One.jrxml in the Design tab.
11. Click the $F{SHIPCITY} text band.
12. In the Properties view, click Hyperlink.
13. Expand the Anchor and Bookmark section.
14. Click to open the Expression Editor, and click Fields.
15. Double-click SHIPCITY Field String to add it to the expression, then click Finish.
16. In the Properties view, change the Bookmark Level to 2.
17. Save all files, and compile the Sample_Book.jrxml.
17.5 Report Book Pagination
To ensure that the report book's pagination increments correctly, you need to modify a few variables.
To establish the report book pagination:
1.
In the Project Explorer, double-click to open Content_Page_One.jrxml.
2.
On the Design tab, double-click the text field containing the expression " "+$V{PAGE_NUMBER}.
3.
In the Expression Editor, and click Variables in the left panel.
4.
Update the expression to the following:
"Page "+$V{MASTER_CURRENT_PAGE}+" of"
5.
Click Finish.
6.
Click to select the text field you just updated. Then in the Properties view, select Text Field.
7.
Use the Evaluation Time drop-down menu to select Master.
8.
Back in the Design tab, double-click the text field containing the expression "Page "+$V{PAGE_
NUMBER}.
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9.
In the Expression Editor, and click Variables in the left panel.
10. Update the expression to the following:
" "+$V{MASTER_TOTAL_PAGES}
11. Click Finish.
12. As you did in steps 6-7, use the Evaluation Time drop-down menu to select Master.
13. Save your project.
17.6 Publishing the Report Book
Now that your report book has been created, tested, refined, configured, and paginated, you can publish it to
JasperReports® Server, so it is available to users
To publish your report book to JasperReports Server:
1.
In the Project Explorer, double-click to open Sample_Book.jrxml in the Design tab.
2.
Click to open the Report Publishing wizard.
3.
Browse to JS Server > Public > Samples > Reports, and click Next.
4.
In the Select Resources dialog, verify that the following resources are listed:
• Content_Page_One.jrxml
•
Country_Intro.jrxml
•
Sample_Book_backcover.jrxml
• Sample_Book_cover.jrxml
• Sample_Book_toc.jrxml
• wave.png
5.
Click Next.
6.
Specify your data source, JServer JNDI Data Source, and click Finish.
Your report book is published, and is available for use in JasperReports® Server
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LOSSARY
Ad Hoc Editor
The interactive data explorer in JasperReports® Server Professional and Enterprise editions. Starting from a predefined collection of fields, the Ad Hoc Editor lets you drag and drop fields, dimensions, and measures to explore data and create tables, charts, and crosstabs. These Ad Hoc views can be saved as reports.
Ad Hoc Report
In previous versions of JasperReports® Server, a report created through the Ad Hoc Editor. Such reports could be added to dashboards and be scheduled, but when edited in Jaspersoft® Studio, lost their grouping and sorting. In the current version, the Ad Hoc Editor is used to explore views which in turn can be saved as reports.
Such reports can be edited in Jaspersoft® Studio without loss, and can be scheduled and added to dashboards.
Ad Hoc View
A view of data that is based on a Domain, Topic, or OLAP client connection. An Ad Hoc view can be a table, chart, or crosstab and is the entry point to analysis operations such as slice and dice, drill down, and drill through.
You can save an Ad Hoc view as a report in order to edit it in the interactive viewer, schedule it, or add it to a dashboard.
Aggregate Function
An aggregate function is one that is computed using a group of values; for example, Sum or Average. Aggregate functions can be used to create calculated fields in Ad Hoc views. Calculated fields containing aggregate functions cannot be used as fields or added to groups in an Ad Hoc view and should not be used as filters.
Aggregate functions allow you to set a level, which specifies the scope of the calculation; level values include
Current (not available for PercentOf), ColumnGroup, ColumnTotal, RowGroup, RowTotal, Total
Analysis View
Audit Archiving
To prevent audit logs from growing too large to be easily accessed, the installer configures JasperReports®
Server to move current audit logs to an archive after a certain number of days, and to delete logs in the archive after a certain age. The archive is another table in the JasperReports® Server's repository database.
Audit Domains
A Domain that accesses audit data in the repository and lets administrators create Ad Hoc reports of server activity. There is one Domain for current audit logs and one for archived logs.
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Audit Logging
When auditing is enabled, audit logging is the active recording of who used JasperReports® Server to do what when. The system installer can configure what activities to log, the amount of detail gathered, and when to archive the data. Audit logs are stored in the same private database that JasperReports® Server uses to store the repository, but the data is only accessible through the audit Domains.
Auditing
A feature of JasperReports® Server Enterprise edition that records all server activity and allows administrators to view the data.
Calculated Field
In an Ad Hoc view or a Domain, a field whose value is calculated from a user-defined formula that may include any number of fields, operators, and constants. For Domains, a calculated field becomes one of the items to which the Domain's security file and locale bundles can apply. There are more functions available for Ad Hoc view calculations than for Domains.
CRM
Customer Relationship Management. The practice of managing every facet of a company's interactions with its clientele. CRM applications help businesses track and support their customers.
CrossJoin
An MDX function that combines two or more dimensions into a single axis (column or row).
Cube
The basis of most OLAP applications, a cube is a data structure that contains three or more dimensions that categorize the cube's quantitative data. When you navigate the data displayed in an OLAP view, you are exploring a cube.
Custom Field
In the Ad Hoc Editor, a field that is created through menu items as a simple function of one or two available fields, including other custom fields. When a custom field becomes too complex or needs to be used in many reports, it is best to define it as a calculated field in a Domain.
Dashboard
A collection of reports, input controls, graphics, labels, and web content displayed in a single, integrated view.
Dashboards often present a high level view of your data, but input controls can parametrize the data to display.
For example, you can narrow down the data to a specific date range. Embedded web content, such as other webbased applications or maps, make dashboards more interactive and functional.
Dashlet
An element in a dashboard. Dashlets are defined by editable properties that vary depending on the dashlet type.
Types of dashlet include reports, text elements, filters, and external web content.
Data Island
A single join tree or a table without joins in a Domain. A Domain may contain several data islands, but when creating an Ad Hoc view from a Domain, you can only select one of them to be available in the view.
Data Policy
In JasperReports® Server, a setting that determines how the server processes and caches data used by Ad Hoc reports. Select your data policies by clicking Manage > Server > Settings Ad Hoc Settings. By default, this setting is only available to the superuser account.
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Glossary
Data Source
Defines the connection properties that JasperReports® Server needs to access data. The server transmits queries to data sources and obtains datasets in return for use in filling reports and previewing Ad Hoc reports.
JasperReports® Server supports JDBC, JNDI, and Bean data sources; custom data sources can be defined as well.
Dataset
A collection of data arranged in columns and rows. Datasets are equivalent to relational results sets and the
JRDataSource type in the JasperReports® Library.
Datatype
In JasperReports® Server, a datatype is used to characterize a value entered through an input control. A datatype must be of type text, number, date, or date-time. It can include constraints on the value of the input, for example maximum and minimum values. As such, a datatype in JasperReports® Server is more structured than a datatype in most programming languages.
Denormalize
A process for creating table joins that speeds up data retrieval at the cost of having duplicate row values between some columns.
Derived Table
In a Domain, a derived table is defined by an additional query whose result becomes another set of items available in the Domain. For example, with a JDBC data source, you can write an SQL query that includes complex functions for selecting data. You can use the items in a derived table for other operations on the
Domain, such as joining tables, defining a calculated field, or filtering. The items in a derived table can also be referenced in the Domain's security file and locale bundles.
Dice
An OLAP operation to select columns.
Dimension
A categorization of the data in a cube. For example, a cube that stores data about sales figures might include dimensions such as time, product, region, and customer's industry.
Domain
A virtual view of a data source that presents the data in business terms, allows for localization, and provides data-level security. A Domain is not a view of the database in relational terms, but it implements the same functionality within JasperReports® Server. The design of a Domain specifies tables in the database, join clauses, calculated fields, display names, and default properties, all of which define items and sets of items for creating Ad Hoc reports.
Domain Topic
A Topic that is created from a Domain by the Data Chooser. A Domain Topic is based on the data source and items in a Domain, but it allows further filtering, user input, and selection of items. Unlike a JRXML-based
Topic, a Domain Topic can be edited in JasperReports® Server by users with the appropriate permissions.
Drill
To click on an element of an OLAP view to change the data that is displayed:
• Drill down. An OLAP operation that exposes more detailed information down the hierarchy levels by delving deeper into the hierarchy and updating the contents of the navigation table.
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•
Drill through. An OLAP operation that displays detailed transactional data for a given aggregate measure.
Click a fact to open a new table beneath the main navigation table; the new table displays the low-level data that constitutes the data that was clicked.
• Drill up. An OLAP operation for returning the parent hierarchy level to view to summary information.
Eclipse
An open source Integrated Development Environment (IDE) for Java and other programming languages, such as
C/C++.
ETL
Extract, Transform, Load. A process that retrieves data from transactional systems, and filters and aggregates the data to create a multidimensional database. Generally, ETL prepares the database that your reports will access.
The Jaspersoft ETL product lets you define and schedule ETL processes.
Fact
The specific value or aggregate value of a measure for a particular member of a dimension. Facts are typically numeric.
Field
A field is equivalent to a column in the relational database model. Fields originate in the structure of the data source, but you may define calculated fields in a Domain or custom fields in the Ad Hoc Editor. Any type of field, along with its display name and default formatting properties, is called an item and may be used in the Ad
Hoc Editor.
Frame
In Jaspersoft® Studio, a frame is a rectangular element that can contain other elements and optionally draw a border around them. Elements inside a frame are positioned relative to the frame, not to the band, and when you move a frame, all the elements contained in the frame move together. A frame automatically stretches to fit its contents.
Frame can also refer to an element in a legacy dashboard; it's the equivalent of a dashlet.
Group
In a report, a group is a set of data rows that have an identical value in a designated field.
• In a table, the value appears in a header and footer around the rows of the group, while the other fields appear as columns.
•
In a chart, the field chosen to define the group becomes the independent variable on the X axis, while the other fields of each group are used to compute the dependent value on the Y axis.
Hierarchy Level
In an OLAP cube, a member of a dimension containing a group of members.
Input Control
A button, check box, drop-down list, text field, or calendar icon that allows users to enter a value when running a report or viewing a dashboard that accepts input parameters. For JRXML reports, input controls and their associated datatypes must be defined as repository objects and explicitly associated with the report. For
Domain-based reports that prompt for filter values, the input controls are defined internally. When either type of report is used in a dashboard, its input controls are available to be added as special content.
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Glossary
iReport Designer
An open source tool for graphically designing reports that leverage all features of the JasperReports® Library.
This designer is superseded by Jaspersoft® Studio.
Item
When designing a Domain or creating a Topic based on a Domain, an item is the representation of a database field or a calculated field along with its display name and formatting properties defined in the Domain. Items can be grouped in sets and are available for use in the creation of Ad Hoc reports.
JasperReport
A combination of a report template and data that produces a complex document for viewing, printing, or archiving information. In the server, a JasperReport references other resources in the repository:
• The report template (in the form of a JRXML file)
•
Information about the data source that supplies data for the report
•
Any additional resources, such as images, fonts, and resource bundles referenced by the report template.
The collection of all the resources that are referenced in a JasperReport is sometimes called a report unit. End users usually see and interact with a JasperReport as a single resource in the repository, but report creators must define all of the components in the report unit.
Jaspersoft® Studio
A commercial open source tool for graphically designing reports that leverage all features of the JasperReports®
Library. Jaspersoft® Studio lets you drag and drop fields, charts, and sub-reports onto a canvas, and also define parameters or expressions for each object to create pixel-perfect reports. You can generate the JRXML of the report directly in Jaspersoft® Studio, or upload it to JasperReports® Server. Jaspersoft® Studio is implemented in Eclipse.
JasperReports® Library
An embeddable, open source, Java API for generating a report, filling it with current data, drawing charts and tables, and exporting to any standard format (HTML, PDF, Excel, CSV, and others). JasperReports processes reports defined in JRXML, an open XML format that allows the report to contain expressions and logic to control report output based on run-time data.
JasperReports® Server
A commercial open source, server-based application that calls the JasperReports® Library to generate and share reports securely. JasperReports® Server authenticates users and lets them upload, run, view, schedule, and send reports from a web browser. Commercial versions provide metadata layers, interactive report and dashboard creation, and enterprise features such as organizations and auditing.
Jaspersoft ETL
A graphical tool for designing and implementing your data extraction, transforming, and loading (ETL) tasks. It provides hundreds of data source connectors to extract data from many relational and non-relational systems.
Then, it schedules and performs data aggregation and integration into data marts or data warehouses that you use for reporting.
Jaspersoft OLAP
A relational OLAP server integrated into JasperReports® Server that performs data analysis with MDX queries.
The product includes query builders and visualization clients that help users explore and make sense of multidimensional data. Jaspersoft OLAP also supports XML/A connections to remote servers.
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Jaspersoft Studio
An open source tool for graphically designing reports that leverage all features of the JasperReports® Library.
Jaspersoft Studio lets you drag and drop fields, charts, and sub-reports onto a canvas, and also define parameters or expressions for each object to create pixel-perfect reports. You can generate the JRXML of the report directly in Jaspersoft Studio, or upload it to JasperReports® Server. Jaspersoft Studio is implemented in Eclipse.
JavaBean
A reusable Java component that can be dropped into an application container to provide standard functionality.
JDBC
Java Database Connectivity. A standard interface that Java applications use to access databases.
JNDI
Java Naming and Directory Interface. A standard interface that Java applications use to access naming and directory services.
Join Tree
In Domains, a collection of joined tables from the actual data source. A join is the relational operation that associates the rows of one table with the rows of another table based on a common value in given field of each table. Only the fields in a same join tree or calculated from the fields in a same join tree may appear together in a report.
JPivot
An open source graphical user interface for OLAP operations. For more information, visit http://jpivot.sourceforge.net/ .
JRXML
An XML file format for saving and sharing reports created for the JasperReports® Library and the applications that use it, such as Jaspersoft® Studio and JasperReports® Server. JRXML is an open format that uses the XML standard to define precisely all the structure and configuration of a report.
Level
Specifies the scope of an aggregate function in an Ad Hoc view. Level values include Current (not available for
PercentOf), ColumnGroup, ColumnTotal, RowGroup, RowTotal, Total.
MDX
Multidimensional Expression Language. A language for querying multidimensional objects, such as OLAP (On
Line Analytical Processing) cubes, and returning cube data for analytical processing. An MDX query is the query that determines the data displayed in an OLAP view.
Measure
Depending on the context:
•
In a report, a formula that calculates the values displayed in a table's columns, a crosstab's data values, or a chart's dependent variable (such as the slices in a pie).
•
In an OLAP view, a formula that calculates the facts that constitute the quantitative data in a cube.
Mondrian
A Java-based, open source multidimensional database application.
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Glossary
Mondrian Connection
An OLAP client connection that consists of an OLAP schema and a data source. OLAP client connections populate OLAP views.
Mondrian Schema Editor
An open source Eclipse plug-in for creating Mondrian OLAP schemas.
Mondrian XML/A Source
A server-side XML/A source definition of a remote client-side XML/A connection used to populate an OLAP view using the XML/A standard.
MySQL
An open source relational database management system. For information, visit http://www.mysql.com/ .
Navigation Table
The main table in an OLAP view that displays measures and dimensions as columns and rows.
ODBO Connect
Jaspersoft ODBO Connect enables Microsoft Excel 2003 and 2007 Pivot Tables to work with Jaspersoft OLAP and other OLAP servers that support the XML/A protocol. After setting up the Jaspersoft ODBO data source, business analysts can use Excel Pivot Tables as a front-end for OLAP analysis.
OLAP
On Line Analytical Processing. Provides multidimensional views of data that help users analyze current and past performance and model future scenarios.
OLAP Client Connection
A definition for retrieving data to populate an OLAP view. An OLAP client connection is either a direct Java connection (Mondrian connection) or an XML-based API connection (XML/A connection).
OLAP Schema
A metadata definition of a multidimensional database. In Jaspersoft OLAP, schemas are stored in the repository as XML file resources.
OLAP View
Also called an analysis view. A view of multidimensional data that is based on an OLAP client connection and an MDX query. Unlike Ad Hoc views, you can directly edit an OLAP view's MDX query to change the data and the way they are displayed. An OLAP view is the entry point for advanced analysis users who want to write their own queries.
Organization
A set of users that share folders and resources in the repository. An organization has its own user accounts, roles, and root folder in the repository to securely isolate it from other organizations that may be hosted on the same instance of JasperReports® Server.
Organization Admin
Also called the organization administrator. A user in an organization with the privileges to manage the organization's user accounts and roles, repository permissions, and repository content. An organization admin can also create suborganizations and mange all of their accounts, roles, and repository objects. The default organization admin in each organization is the jasperadmin account.
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Outlier
A fact that seems incongruous when compared to other member's facts. For example, a very low sales figure or a very high number of help desk tickets. Such outliers may indicate a problem (or an important achievement) in your business. The analysis features of Jaspersoft OLAP excel at revealing outliers.
Parameter
Named values that are passed to the engine at report-filling time to control the data returned or the appearance and formatting of the report. A report parameter is defined by its name and type. In JasperReports® Server, parameters can be mapped to input controls that users can interact with.
Pivot
To rotate a crosstab such that its row groups become column groups and its column groups become rows. In the
Ad Hoc Editor, pivot a crosstab by clicking .
Pivot Table
A table with two physical dimensions (for example, X and Y axis) for organizing information containing more than two logical dimensions (for example, PRODUCT, CUSTOMER, TIME, and LOCATION), such that each physical dimension is capable of representing one or more logical dimensions, where the values described by the dimensions are aggregated using a function such as SUM. Pivot tables are used in Jaspersoft OLAP.
Properties
Settings associated with an object. The settings determine certain features of the object, such as its color and label. Properties are normally editable. In Java, properties can be set in files listing objects and their settings.
Report
In casual usage, report may refer to:
• A JasperReport.
•
The main JRXML in a JasperReport.
•
The file generated when a JasperReport is scheduled. Such files are also called content resources or output files.
• The file generated when a JasperReport is run and then exported.
• In previous JasperReports Server versions, a report created in the Ad Hoc Editor.
Report Run
An execution of a report, Ad Hoc view, or dashboard, or a view or dashboard designer session, it measures and limits usage of Freemium instances of JasperReports Server. The executions apply to resources no matter how they are run (either in the web interface or through the various APIs, such as REST web services). Users of our
Community Project and our full-use commercial licenses are not affected by the limit. For more information, please contact [email protected].
Repository
The tree structure of folders that contain all saved reports, dashboards, OLAP views, and resources. Users access the repository through the JasperReports® Server web interface or through Jaspersoft® Studio. Applications can access the repository through the web service API. Administrators use the import and export utilities to back up the repository contents.
Resource
In JasperReports® Server, anything residing in the repository, such as an image, file, font, data source, Topic,
Domain, report element, saved report, report output, dashboard, or OLAP view. Resources also include the
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Glossary folders in the repository. Administrators set user and role-based access permissions on repository resources to establish a security policy.
Role
A security feature of JasperReports® Server. Administrators create named roles, assign them to user accounts, and then set access permissions to repository objects based on those roles. Certain roles also determine what functionality and menu options are displayed to users in the JasperReports® Server interface.
Schema
A logical model that determines how data is stored. For example, the schema in a relational database is a description of the relationships between tables, views, and indexes. In Jaspersoft OLAP, an OLAP schema is the logical model of the data that appears in an OLAP view; they are uploaded to the repository as resources. For
Domains, schemas are represented in XML design files.
Schema Workbench
A graphical tool for easily designing OLAP schemas, data security schemas, and MDX queries. The resulting cube and query definitions can then be used in Jaspersoft OLAP to perform simple but powerful analysis of large quantities of multi-dimensional data stored in standard RDBMS systems.
Set
In Domains and Domain Topics, a named collection of items grouped together for ease of use in the Ad Hoc
Editor. A set can be based on the fields in a table or entirely defined by the Domain creator, but all items in a set must originate in the same join tree. The order of items in a set is preserved.
Slice
An OLAP operation for filtering data rows.
SQL
Structured Query Language. A standard language used to access and manipulate data and schemas in a relational database.
System Admin
Also called the system administrator. A user who has unlimited access to manage all organizations, users, roles, repository permissions, and repository objects across the entire JasperReports® Server instance. The system admin can create root-level organizations and manage all server settings. The default system admin is the superuser account.
Topic
A JRXML file created externally and uploaded to JasperReports® Server as a basis for Ad Hoc reports. Topics are created by business analysts to specify a data source and a list of fields with which business users can create reports in the Ad Hoc Editor. Topics are stored in the Ad Hoc Components folder of the repository and displayed when a user launches the Ad Hoc Editor.
Transactional Data
Data that describe measurable aspects of an event, such as a retail transaction, relevant to your business.
Transactional data are often stored in relational databases, with one row for each event and a table column or field for each measure.
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User
Depending on the context:
• A person who interacts with JasperReports® Server through the web interface. There are generally three categories of users: administrators who install and configure JasperReports® Server, database experts or business analysts who create data sources and Domains, and business users who create and view reports and dashboards.
•
A user account that has an ID and password to enforce authentication. Both people and API calls accessing the server must provide the ID and password of a valid user account. Roles are assigned to user accounts to determine access to objects in the repository.
View
Several meanings pertain to JasperReports® Server:
• An Ad Hoc view.
•
An OLAP view.
•
A database view. See http://en.wikipedia.org/wiki/View_%28database%29 .
Virtual Data Source
A virtual data source allows you to combine data residing in multiple JDBC and/or JNDI data sources into a single data source that can query the combined data. Once you have created a virtual data source, you create
Domains that join tables across the data sources to define the relationships between the data sources.
WCF
Web Component Framework. A low-level GUI component of JPivot. For more information, see http://jpivot.sourceforge.net/wcf/index.html
.
Web Services
A SOAP (Simple Object Access Protocol) API that enables applications to access certain features of
JasperReports® Server. The features include repository, scheduling and user administration tasks.
XML
eXtensible Markup language. A standard for defining, transferring, and interpreting data for use across any number of XML-enabled applications.
XML/A
XML for Analysis. An XML standard that uses Simple Object Access protocol (SOAP) to access remote data sources. For more information, see http://www.xmla.org/ .
XML/A Connection
A type of OLAP client connection that consists of Simple Object Access Protocol (SOAP) definitions used to access data on a remote server. OLAP client connections populate OLAP views.
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I
NDEX
A
Ad Hoc views
localizing 96 resources 96 adding resources to the server 96
B
Beans See Java
C
chart reports
charts
dual-axis charts 232 multi-axis charts 232
ClassNotFound error 155 classpath 155
columns
column groups 198-200 in Table component 198-199
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connections
JasperReports Server See JasperReports Server
containers
creating
CSV
custom visualization component 70
D
data adapters
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net.sf.jasperreports.data.adapter property 151
publishing to JasperReports Server 87
Spotfire Information Links 185
data sources
datasets
E
elements
F
fields
double 39 in Groovy expressions 39 in Java expressions 39
304
folders
G
groups
H
HTML5 charts
disabling chart types options 227
hypertext See hyperlinks
I
importing
server connections from a workspace 15
iReport, user interface comparison 19
J
JasperReports
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compatiblity between versions 17
JasperReports Server
creating a Topic in Jaspersoft Studio 94
date/time stamp for scheduled reports 103
publishing report templates to 92
repository 97 running a report 97
Jaspersoft OLAP prerequisites 12
Jaspersoft Studio
setting advanced properties 227
Java
JRXML files
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L
languages
layout
locales
M
map component (Google Maps)
using expressions for properties 260
map component (TIBCO GeoAnalytics)
basic structure 264 configuring 264
using expressions for properties 266
markers
markers in TIBCO Maps 268, 271
Microsoft SQL Server Analytic Services 176
MongoDB
N
net.sf.jasperreports.data.adapter property 151
O
P
parameters
Index
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date/timestamp for scheduled reports 103
paths
prerequisites for Jaspersoft OLAP 12
projects
properties
setting on multiple levels 227
publishing
Q
queries
query languages
R
records, sorting and filtering 158
report templates
306
publishing to JasperReports Server 92
reports
page format 22 properties 19, 22
publishing to JasperReports Server 86, 89
setting advanced properties 227
repository
resources
adding to Jaspersoft Studio from the server 96 and Ad Hoc views 96
restoring windows and views 19
S
settings
Spotfire Information Links 185
SQL queries
subreports
T
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TIBCO Spotfire Information Links 185
field names in 96 localization 96
W
workspace
importing projects 13-14 upgrading 13-14
X
XML
Index
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