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Integrating and Extending BIRT

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<>The world-wide developer community has downloaded over ten million copies of BIRT (Business Intelligence and Reporting Tools). Built on the open-source Eclipse platform, BIRT is a powerful reporting system that provides an end-to-end solution from creating and deploying reports to integrating report capabilities in enterprise applications.

Integrating and Extending BIRT, Third Edition, introduces programmers to BIRT architecture and the reporting framework. BIRT technology makes it possible for ...

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Overview

<>The world-wide developer community has downloaded over ten million copies of BIRT (Business Intelligence and Reporting Tools). Built on the open-source Eclipse platform, BIRT is a powerful reporting system that provides an end-to-end solution from creating and deploying reports to integrating report capabilities in enterprise applications.

Integrating and Extending BIRT, Third Edition, introduces programmers to BIRT architecture and the reporting framework. BIRT technology makes it possible for programmers to build customized reports using scripting and BIRT APIs. This book also includes extensive examples of how to use the Eclipse Plug-in Development Environment to build plug-ins to extend the features of the BIRT framework. The source code for these examples is available for download at www.eclipse.org/birt.

Key topics covered include

  • Installing and deploying BIRT
  • Deploying a BIRT report to an application server
  • Understanding BIRT architecture
  • Scripting in a BIRT report design
  • Integrating BIRT functionality into applications
  • Working with the BIRT extension framework

This revised and expanded third edition features the following new content

  • Updated architectural diagrams
  • Expanded scripting examples
  • Debugging event handlers
  • Developing an advanced report item with data binding
  • Developing a data extraction extension
  • Developing a charting extension

Readers may also be interested in this book’s companion volume. BIRT: A Field Guide, Third Edition, is the authoritative guide to using BIRT Report Designer, the graphical tool that enables users of all levels to build reports, from simple to complex, without programming.

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Product Details

  • ISBN-13: 9780321772824
  • Publisher: Addison-Wesley
  • Publication date: 8/28/2011
  • Series: Eclipse Series
  • Edition number: 3
  • Pages: 880
  • Sales rank: 1,328,738
  • Product dimensions: 6.94 (w) x 9.26 (h) x 1.81 (d)

Meet the Author

The authors are members of the extended BIRT development team and have backgrounds in both computer science and technical writing. Collectively, they have 165 years of technical consulting, training, writing and publishing experience related to reporting, business intelligence tools, and database technologies. They have published forty-two titles on these topics through numerous editions.

The authors are members of the extended BIRT development team and have backgrounds in both computer science and technical writing. Collectively, they have 165 years of technical consulting, training, writing and publishing experience related to reporting, business intelligence tools, and database technologies. They have published forty-two titles on these topics through numerous editions.

The authors are members of the extended BIRT development team and have backgrounds in both computer science and technical writing. Collectively, they have 165 years of technical consulting, training, writing and publishing experience related to reporting, business intelligence tools, and database technologies. They have published forty-two titles on these topics through numerous editions.

The authors are members of the extended BIRT development team and have backgrounds in both computer science and technical writing. Collectively, they have 165 years of technical consulting, training, writing and publishing experience related to reporting, business intelligence tools, and database technologies. They have published forty-two titles on these topics through numerous editions.

The authors are members of the extended BIRT development team and have backgrounds in both computer science and technical writing. Collectively, they have 165 years of technical consulting, training, writing and publishing experience related to reporting, business intelligence tools, and database technologies. They have published forty-two titles on these topics through numerous editions.

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Read an Excerpt

About this book

BIRT is a powerful reporting platform that provides end-to-end reporting solutions, from creating and deploying reports to integrating report capabilities into other enterprise applications. Two companion books, BIRT: A Field Guide to Reporting and Integrating and Extending BIRT, cover the breadth and depth of BIRT's functionality.

This book informs report developers about how to write scripts that:

  • Customize the report-generation process
  • Incorporate complex business logic in their reports

This book also informs application developers about how to:

  • Deploy reports
  • Integrate reporting capabilities into other applications
  • Extend BIRT functionality

By its very nature, reporting is not a stand-alone technology. It draws on data generated by applications and is frequently integrated tightly within those applications. In some applications, such as performance monitoring, reporting provides the most tangible expression of value. Therefore, a successful reporting platform must emphasize interoperability and extensibility, and, a successful implementation of that platform must always involve some measure of integration and extension.

As you read this book, you will see the significant investment that has been made in BIRT to provide support for interoperability and extensibility. In the area of interoperability, for instance, BIRT supports flexible deployment of its report engine and viewer to a wide variety of J2EE application server environments. Other provisions for interoperability in the BIRT platform include the ability to dynamically build or modify reports from within an application using the design engine application programming interface (API) and the ability to access native data objects using the scripted data source mechanism.

In the area of extensibility, BIRT provides hooks to build upon platform capabilities in the following areas:

  • Report Items. New controls may be added to the BIRT designer palette using the report item extension API.
  • Complex Logic. Event handlers written in JavaScript or Java may be included in the generation or presentation phase of report or chart execution to incorporate custom logic required by the application.
  • Data Access. The Open Data Access (ODA) extension provides the means to develop drivers for new, non-JDBC data sources as well as create graphical user interfaces for query specification.
  • Rendering. New report output formats or output for specialized devices can be developed using the report rendering extension API.
Who should read this book

This book is intended for people who have a programming background. These readers can be categorized as:

  • Embedders and integrators. These individuals work with the software to integrate it into their current application infrastructure.
  • Extenders. These individuals leverage APIs and other extension points to add capability or to establish new interoperability between currently disparate components or services.

To write scripts in report design, you need knowledge of JavaScript or Java. More advanced tasks, such as extending BIRT's functionality, require Java development experience and familiarity with the Eclipse platform.

Contents of this book

This book is divided into several parts. The following sections describe the contents of each of the parts.

Installing and Deploying BIRT

Part I, "Installing and Deploying BIRT," introduces the currently available BIRT reporting packages, the prerequisites for installation, and the steps to install and update the packages. Part I includes the following chapters:

Chapter 1, "Prerequisites for BIRT." BIRT provides a number of separate packages as downloadable archive (.zip) files on the Eclipse web site. Some of the packages are stand-alone modules, others require an existing Eclipse environment, and still others provide additional functionality to report developers and application developers. This chapter describes the prerequisites for each of the available packages.

Chapter 2, "Installing a BIRT Report Designer." BIRT provides two report designers as separate packages, which are downloadable archive (.zip) files on the Eclipse web site. This chapter describes the steps required to install each of the available report designers.

Chapter 3, "Installing Other BIRT Packages." This chapter describes the steps required to install each of the available packages.

Chapter 4, "Updating BIRT." BIRT packages are Eclipse-based, so it is easy to update any of them from earlier releases to release 2.0 or later. This chapter describes how you can install the latest packages without interrupting your work.

Chapter 5, "Deploying a BIRT Report to an Application Server." This chapter introduces the distribution of reports through an application server such as Apache Tomcat, IBM WebSphere, or BEA WebLogic. The instructions in the chapter provide detailed guidance into deploying a BIRT report to Apache Tomcat version 5.5.7. From those instructions, a developer can infer how to deploy to other versions.

Understanding the BIRT Framework

Part II, "Understanding the BIRT Framework," introduces the BIRT architecture and the Report Object Model (ROM) and provides background information that will help programmers design or modify reports programmatically, instead of using the graphical tools in BIRT Report Designer. Part II includes the following chapters:

Chapter 6, "Understanding the BIRT Architecture." This chapter provides an architectural overview of BIRT and its components, including the relationships among the BIRT components and BIRT's relationship to Eclipse and Eclipse frameworks. Architectural diagrams illustrate and clarify the relationships and workflow of the components. The chapter also provides brief overviews of all the major BIRTcomponents.

Chapter 7, "Understanding the Report Object Model." This chapter provides an overview of the BIRT ROM. ROM is a specification for a set of

Scripting in a Report Design

Part III, "Scripting in a Report Design," describes how a report developer can customize and enhance a BIRT report by writing event handler scripts in either Java or JavaScript. Part III includes the following chapters:

Chapter 8, "Using Scripting in a Report Design." This chapter introduces the writing of a BIRT event handler script in either Java or JavaScript, including the advantages and disadvantages of using one language over the other. BIRT event handlers are associated with data sets, data sources, and report items. BIRT fires specific events at specific times in the processing of a report. This chapter identifies the events that BIRT fires and describes the event firing sequence.

Chapter 9, "Using JavaScript to Write an Event Handler." This chapter discusses the coding environment and coding considerations for writing a BIRT event handler in JavaScript. This chapter describes several BIRT JavaScript objects that a developer can use to get and set properties that affect the final report. The BIRT JavaScript coding environment offers a pop-up list of properties and functions available in an event handler. A JavaScript event handler can also use Java classes. This chapter includes a tutorial that describes the process of creating a JavaScript event handler.

Chapter 10, "Using Java to Write an Event Handler." This chapter discusses how to write a BIRT event handler in Java. BIRT provides Java adapter classes that assist the developer in the creation of Java event handlers. The report developer uses the property editor of the BIRT Report Designer to associate a Java event handler class with the appropriate report element. This chapter contains a tutorial that steps through the Java event handler development and deployment process. This chapter also describes the event handler methods and their parameters.

Chapter 11, "Using a Scripted Data Source." BIRT supports getting data from any data source that can be processed with Java or JavaScript. To use a scripted data source in a BIRT report, the report developer implements an open and a close method for the data source and an open, a fetch, and a close method for the data set. A scripted data source can be an EJB, an

Integrating BIRT Functionality into Applications

Part IV, "Integrating BIRT Functionality into Applications," describes the public APIs that are available to Java developers, except the extension APIs.Chapter 12. Understanding the BIRT APIs. This chapter introduces BIRT's public API, which are the classes and interfaces in three package hierarchies:

  • The report engine API, in the org.eclipse.birt.report.engine.api hierarchy, supports developers of custom report generators.
  • The design engine API, in the org.eclipse.birt.report.engine.api hierarchy, supports the development of custom report designs.
  • The chart engine API, in the org.eclipse.birt.chart hierarchy, is used to develop a custom chart generator.

Chapter 13, "Programming with the BIRT Reporting APIs." This chapter describes the fundamental requirements of a reporting application and lists the BIRT API classes and interfaces that are used to create a reporting application. This chapter describes the tasks that are required of a reporting application and provides an overview of how to build a reporting application. The org.eclipse.birt.report.engine.api and org.eclipse.birt.report.model.api packages support the process of generating a report from a report design.

Chapter 14, "Programming with the BIRT Charting APIs." This chapter describes the requirements of a charting application, either in a stand-alone environment or as part of a reporting application. The org.eclipse.birt.chart hierarchy of packages provides the charting functionality in BIRT. By describing the fundamental tasks required of charting applications, this chapter introduces the API classes and interfaces that are used to create a chart.

Working with the Extension Framework

Part V, "Working with the Extension Framework," shows Java programmers how to add new functionality to the BIRT framework. By building on the Eclipse platform, BIRT provides an extension mechanism that is familiar to developers of Eclipse plug-ins. This part also provides information about how to build the BIRT project for developers who need access to the complete BIRT open source code base. Part V includes the following chapters:

Chapter 15, "Building the BIRT Project." This chapter explains how to download BIRT 2.0.1 source code and build the BIRT project for development. This chapter describes how to configure an Eclipse workspace, download BIRT and Data Tools Platform (DTP) source code from the Eclipse Concurrent Versions System (CVS) repository, and build the BIRT report and web viewers.

Chapter 16, "Extending BIRT." This chapter provides an overview of the BIRT extension framework and describes how to use the Eclipse Plug-in Development Environment (PDE) and the BIRT extension points to create, build, and deploy a BIRT extension.

Chapter 17, "Developing a Report Item Extension." This chapter describes how to develop a report item extension. The rotated text extension example is a plug-in that renders the text of a report item as an image. The extension rotates the image in the report design to display the text at a specified angle. This chapter describes how to build the rotated text report item plug-in and add the report item to the BIRT Report Designer using the defined extension points.

Chapter 18, "Developing a Report Rendering Extension." This chapter describes how to develop a report rendering extension. The Comma-Separated Values (CSV) extension example is a plug-in that writes the table data in a report to a file in CSV format. This chapter describes how to extend the emitter interfaces using the defined extension points to build and deploy a customized report rendering plug-in that runs in the BIRT Report Engine environment.

Chapter 19, "Developing an ODA Extension." This chapter describes how to develop several types of DTP ODA extensions. The CSV ODA driver example is a plug-in that reads data from a CSV file. The Hibernate ODA driver example uses Hibernate Query Language (HQL) to provide a SQLtransparent extension that makes the ODA extension portable to all relational databases. This chapter shows how to develop an ODA extension to the BIRT Report Designer 2.0.1 user interface that allows a report designer to select an extended ODA driver. This chapter also describes how to implement an extension to an ODA JDBC driver to use a supplied connection.

The glossary contains terms that are useful to understanding all parts of the book.

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Table of Contents

Foreword xix

Preface xxi

Acknowledgments xxix

Part 1: Installing and Deploying BIRT 1

Chapter 1: Introducing BIRT Report Designers 3

Understanding BIRT components 3

Understanding Eclipse BIRT packages 4

About types of BIRT builds 5

Chapter 2: Installing a BIRT Report Designer 7

Installing BIRT Report Designer Full Eclipse Install 7

Installing BIRT RCP Report Designer 8

Troubleshooting installation problems 9

Installing a language pack 10

Updating a BIRT Report Designer installation 11

Updating BIRT RCP Report Designer installation 12

Chapter 3: Installing Other BIRT Packages 15

Installing Chart Engine 15

Installing BIRT Data Tools Platform Integration 17

Installing BIRT Demo Database 17

Installing Report Engine 19

Installing BIRT Samples 21

Installing BIRT Source Code 21

Installing BIRT Web Tools Integration 22

Chapter 4: Deploying a BIRT Report to an Application Server 25

About application servers 25

Placing the BIRT report viewer on an application server 26

Placing fonts on the application server 31

Viewing a report using a browser 31

Using connection pooling on Tomcat 32

Part 2: Understanding the BIRT Framework 37

Chapter 5: Understanding the BIRT Architecture 39

Understanding the BIRT integration 39

About the BIRT applications 43

About the types of BIRT report items 46

About the Report Object Model (ROM) 47

About the types of BIRT files 47

About custom Java applications 49

About extensions to BIRT 50

Chapter 6: Understanding the Report Object Model 51

About the ROM specification 51

About the ROM schema 53

About the rom.def file 53

Understanding ROM elements 58

Part 3: Scripting in a Report Design 61

Chapter 7: Using Scripting in a Report Design 63

Overview of BIRT scripting 63

Events overview 64

Event order sequence 71

Chapter 8: Using JavaScript to Write an Event Handler 83

Using BIRT Report Designer to enter a JavaScript event handler 83

Using the reportContext object 86

Using the this object 93

Using the row object 96

Getting column information 97

Getting and altering the query string 98

Changing data source connection properties 99

Getting a parameter value 100

Determining script execution sequence 101

Tutorial 1: Writing an event handler in JavaScript 103

JavaScript event handler examples 107

Calling external JavaScript functions 111

Calling Java from JavaScript 112

Calling the method of a class in a plug-in 114

Chapter 9: Using Java to Write an Event Handler 117

Writing a Java event handler class 117

Writing a Java event handler 123

Understanding the BIRT interfaces 128

Java event handler example 135

Debugging a Java event handler 142

Chapter 10: Working with Chart Event Handlers 143

Chart events overview 143

Understanding the Chart script context 145

Understanding when chart events fire 150

Writing a Java chart event handler 164

Writing a JavaScript chart event handler 167

Using the simplified charting API 169

Chapter 11: Using Scripting to Access Data 173

Using a Scripted Data Source 173

Tutorial 2: Creating a scripted data source 175

Creating a web services data source using a custom connection class 184

Chapter 12: Debugging Event Handlers 187

Checking the syntax of JavaScript expressions 188

Debugging JavaScript event handlers code 190

Debugging Java event handler code 194

Debugging report execution exceptions 194

Creating a debug configuration 196

Tutorial 3: Debugging a report that contains Java and JavaScript code 198

Part 4: Integrating BIRT into Applications 215

Chapter 13: Understanding the BIRT APIs 217

Package hierarchy diagrams 218

About the BIRT Report Engine API 219

About the Design Engine API 226

About the BIRT Chart Engine API 239

Chapter 14: Programming Using the BIRT Reporting APIs 257

Building a reporting application 258

Generating reports from an application 262

Programming the structure of a report design 289

Chapter 15: Programming Using the BIRT Charting API 307

About the chart engine contents 307

About the environment for a charting application 308

About the charting API and the chart structure 310

Using the charting API to create a new chart 312

Modifying chart properties 312

Using a chart item in a report design 321

Using the BIRT charting API in a Java Swing application 334

Understanding the chart programming examples 340

Part 5: Working with the Extension Framework 347

Chapter 16: Building the BIRT Project 349

About building the BIRT project 349

Installing a working version of BIRT 350

Configuring Eclipse to compile BIRT and build the viewer JAR files 350

Downloading and extracting the correct version of the BIRT source code 353

Importing, building, and testing the BIRT project 354

Building new JAR files to display BIRT output 356

Chapter 17: Extending BIRT 359

Overview of the extension framework 359

Understanding the structure of a BIRT plug-in 359

Working with the Eclipse PDE 366

Creating the structure of a plug-in extension 370

Creating the plug-in extension content 373

Building a plug-in extension 377

Deploying the extension plug-in 381

Downloading the code for the extension examples 384

Chapter 18: Developing a Report Item Extension 387

Understanding a report item extension 387

Developing the sample report item extension 389

Understanding the rotated label report item extension 404

Deploying and testing the rotated label report item plug-in 412

Developing an advanced report item 416

Chapter 19: Developing a Report Rendering Extension 465

Understanding a report rendering extension 465

Developing a CSV report rendering extension 466

Developing an XML report rendering extension 494

Chapter 20: Developing an ODA Extension 509

Understanding an ODA extension 510

Developing the CSV ODA driver extensions 511

Implementing the CSV ODA driver plug-in 513

Understanding the sample CSV ODA driver extension 522

Developing the CSV ODA user interface extension 530

Understanding the sample CSV ODA user interface extension 537

Testing the CSV ODA user interface plug-in 548

Developing a Hibernate ODA extension 554

Chapter 21: Developing a Data Extraction Extension 601

Understanding a data extraction extension 601

Developing an XML data extraction extension 602

Chapter 22: Developing a Fragment 635

Understanding a fragment 635

Developing the sample fragment 636

Creating a fragment project 637

Understanding the sample fragment 640

Building, deploying, and testing a fragment 641

Chapter 23: Developing a Charting Extension 647

About BIRT charting extension points 648

Setting up the build environment 650

Extending the chart model 652

Glossary 707

Index 779

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