Welcome!

Java IoT Authors: Pat Romanski, Liz McMillan, Elizabeth White, Carmen Gonzalez, Yeshim Deniz

Related Topics: Java IoT, Eclipse

Java IoT: Article

Java Feature — Developing an Eclipse BIRT Report Item Extension

Architecture and framework

The Eclipse platform is an Open Source, integrated system of application development tools that you implement and extend using a plug-in interface. Eclipse provides a set of core plug-ins that configures the basic services for the platform's framework. A platform developer can build and integrate new tools in this application development system.

Business Intelligence Reporting Tool (BIRT) is a set of plug-in extensions that lets a developer add reporting functionality to an application. The APIs in BIRT define extension points that let the developer add custom functionality to the BIRT framework.

This article describes how to create a BIRT extension using the Eclipse Plug-in Development Environment (PDE). The example adds a custom report item, RotatedLabel, to the BIRT Report Designer Palette that a report developer can drag-and-drop into a report design, as shown in Figure 1.

The sample code for the plug-in creates a label in the runtime report that renders text at a specified angle. Figure 2 shows the display text rotated at an angle of 45 degrees.

A developer uses the Eclipse PDE to create, develop, test, debug, and deploy a plug-in. The Eclipse PDE supports host and runtime instances of the workbench project. The host instance provides the development environment. The runtime instance lets you launch a plug-in to test it.

To implement the report item extension, the plug-in developer does the following tasks:

  • Configures the plug-in project in the Eclipse PDE
  • Adds the report item to the Report Designer Palette using the report item UI extension point.
  • Adds the report item definition to the Report Object Model (ROM) using the report item model extension point.
  • Adds rendering behavior to the report item using the report item presentation extension point.
  • Deploys the report item extension to the Eclipse plug-in environment
An Eclipse plug-in implements the following components:
  • Plug-in manifest - An XML document that describes the plug-in's activation framework to the Eclipse runtime environment
  • Plug-in runtime class - A Java class that defines the methods for starting, managing, and stopping a plug-in instance
  • Extension-point schema definition - An XML document that specifies a grammar that you must follow when defining the elements of a plug-in extension in the Eclipse PDE
In the Eclipse PDE Workbench, the developer can create the framework for a plug-in extension by using the Manifest Editor to generate the plug-in manifest and class templates based on the definitions in the extension-point schemas.

In the Eclipse PDE, create a new project for the rotated label report item extension by choosing File->New->Project and selecting the Plug-in Project wizard. In Plug-in Project, modify the settings, as shown in Table 1.

In Plug-in Content, modify the settings, as shown in Table 2.

Figure 3 shows the host instance of the Eclipse PDE with the rotated label report item extension project open in the Manifest Editor.

After defining the plug-in project, specify the list of plug-ins that must be available on the classpath of the rotated label report item extension to compile and run. On PDE Manifest Editor, choose Dependencies. In Required Plug-ins, remove the following plug-ins:

  • org.eclipse.ui
  • org.eclipse.core.runtime
    Choose Add. Plug-in Selection appears. In Plug-in Selection, select the following plug-ins:
  • org.eclipse.emf.ecore
  • org.eclipse.birt.report.designer.ui
  • org.eclipse.birt.report.model
  • org.eclipse.draw2d
  • org.eclipse.birt.report.engine
  • org.eclipse.jface.text
  • org.eclipse.core.runtime
  • org.eclipse.birt.core
  • org.eclipse.ui
  • org.eclipse.birt.core.ui
The order of the list determines the sequence in which a plug-in loads at runtime. Use Up and Down to change the loading order as necessary. The rotated label report item extension doesn't need any changes to the loading order if you select the required plug-ins in the order listed in the previous step.

On PDE Manifest Editor, choose Extensions. On Extensions, declare the extension points required to implement the rotated label report item plug-in and add the extension element details. The Eclipse PDE uses the XML schema defined for each extension point to provide the list of valid attributes and values specified for the extension elements.

To add an extension point, choose Add. New Extension appears. In Available extension points, select the plug-in that contains the extension point.

The rotated label report item extension implements the following extension points:

  • org.eclipse.birt.report.designer.ui.reportitemUI registers the graphical user interface (GUI) to use for the report item extension
  • org.eclipse.birt.report.model.reportItemModel specifies how to represent and persist the report item extension in the Report Object Model (ROM)
  • org.eclipse.birt.report.engine.reportitemPresentation specifies how to instantiate, process, and render the report item extension
To add an extension point element right-click on an extension point such as org.eclipse.birt.report.designer.ui.reportItemLabelUI. Choose New <extension point element> to add the extension element to the project. Figure 4 shows how to select the extension point element, report-ItemLabelUI, specified by the extension point, org.eclipse.birt.report.designer.ui.reportitemUI.

An XML schema specifies the following properties that identify each extension point in the runtime environment:

  • ID - Optional identifier of the extension instance
  • Name - Optional name of the extension instance
  • Point - Fully qualified identifier of the extension point
On Extensions, these settings appear in Extension Details when an extension point is selected as shown in Figure 4.

The extension point, org.eclipse.birt.report.designer.ui.reportitemUI, specifies the following extension elements:

  • reportItemLabelUI - The fully qualified name of the Java class that gets the display text for the report item component in the BIRT Report Designer
  • model - ROM report item extension name that maps to this UI component
  • palette - Icon to show and the category in which the icon appears in the Palette
  • editor - Flags indicating whether the editor shows in the MasterPage and Designer UI and is resizable in the Editor
  • outline - Icon to show in the Outline View
  • propertyPage - Optional Property Edit Page to use for the report item extension in the Property Edit View
The extension point org.eclipse.birt.report.model.reportItemModel specifies reportItem and the following extension element properties:
  • extensionName - Internal unique name of the report item extension
  • class - Fully qualified name of the Java class that implements the org.eclipse.birt.report.model.api.extension.IReportItemFactory interface
  • defaultStyle - Predefined style to use for the report item extension
  • isNameRequired - Field indicating whether the report item instance name is required
  • displayNameID - Resource key for the display name
    reportItem also specifies the following property extension elements:
  • rotationAngle
  • displayText

    rotationAngle and displayText each specify the following properties:

  • name - Internal unique name of the property extension element
  • type - Data type, such as integer or string
  • displayNameID - Resource key for the display name
  • canInherit - Flag indicating whether the property extension element can inherit properties
  • detailType - Detail data type such as Boolean or string
  • defaultValue - Default value of the property extension element
  • isEncryptable - Flag indicating whether the property is encrypted
  • defaultDisplayName - Display name to use if no localized I18N display name exists

    The extension point org.eclipse.birt.report.engine.reportitemPresentation specifies the following report Item extension elements:

  • name - Unique name of the report item extension.
  • class - Fully qualified name of the Java class that implements the org.eclipse.birt.report.engine.extension.IReportItemPresentation interface.
  • supportedFormats - Supported rendering formats for this extended item. The value for this attribute is a comma-separated string, such as "HTML, PDF." The string is case-insensitive.

More Stories By Jason Weathersby

Jason Weathersby is a member of the extended BIRT development team at Actuate Corporation and has backgrounds in both computer science and technical writing. He has many years experience in technical consulting, training, writing, and publishing about reporting, business intelligence tools, and database technologies.

More Stories By Iana Chatalbasheva

Iana Chatalbasheva is a member of the extended BIRT development team at Actuate Corporation and has backgrounds in both computer science and technical writing. She has many years experience in technical consulting, training, writing, and publishing about reporting, business intelligence tools, and database technologies.

More Stories By Tom Bondur

Tom Bondur is a member of the extended BIRT development team at Actuate Corporation and has backgrounds in both computer science and technical writing. He has many years experience in technical consulting, training, writing, and publishing about reporting, business intelligence tools, and database technologies.

Comments (1) View Comments

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


Most Recent Comments
JDJ News Desk 10/23/06 05:29:14 PM EDT

The Eclipse platform is an Open Source, integrated system of application development tools that you implement and extend using a plug-in interface. Eclipse provides a set of core plug-ins that configures the basic services for the platform's framework. A platform developer can build and integrate new tools in this application development system.

@ThingsExpo Stories
The IoT is changing the way enterprises conduct business. In his session at @ThingsExpo, Eric Hoffman, Vice President at EastBanc Technologies, discuss how businesses can gain an edge over competitors by empowering consumers to take control through IoT. We'll cite examples such as a Washington, D.C.-based sports club that leveraged IoT and the cloud to develop a comprehensive booking system. He'll also highlight how IoT can revitalize and restore outdated business models, making them profitable...
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MangoApps provides modern company intranets and team collaboration software, allowing workers to stay connected and productive from anywhere in the world and from any device. For more information, please visit https://www.mangoapps.com/.
SYS-CON Events announced today the How to Create Angular 2 Clients for the Cloud Workshop, being held June 7, 2016, in conjunction with 18th Cloud Expo | @ThingsExpo, at the Javits Center in New York, NY. Angular 2 is a complete re-write of the popular framework AngularJS. Programming in Angular 2 is greatly simplified. Now it’s a component-based well-performing framework. The immersive one-day workshop led by Yakov Fain, a Java Champion and a co-founder of the IT consultancy Farata Systems and...
What a difference a year makes. Organizations aren’t just talking about IoT possibilities, it is now baked into their core business strategy. With IoT, billions of devices generating data from different companies on different networks around the globe need to interact. From efficiency to better customer insights to completely new business models, IoT will turn traditional business models upside down. In the new customer-centric age, the key to success is delivering critical services and apps wit...
Join us at Cloud Expo | @ThingsExpo 2016 – June 7-9 at the Javits Center in New York City and November 1-3 at the Santa Clara Convention Center in Santa Clara, CA – and deliver your unique message in a way that is striking and unforgettable by taking advantage of SYS-CON's unmatched high-impact, result-driven event / media packages.
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, will provide an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life ...
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
SYS-CON Events announced today that MobiDev will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 develope...
As cloud and storage projections continue to rise, the number of organizations moving to the cloud is escalating and it is clear cloud storage is here to stay. However, is it secure? Data is the lifeblood for government entities, countries, cloud service providers and enterprises alike and losing or exposing that data can have disastrous results. There are new concepts for data storage on the horizon that will deliver secure solutions for storing and moving sensitive data around the world. ...
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
SYS-CON Events announced today that ContentMX, the marketing technology and services company with a singular mission to increase engagement and drive more conversations for enterprise, channel and SMB technology marketers, has been named “Sponsor & Exhibitor Lounge Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York. “CloudExpo is a great opportunity to start a conversation with new prospects, but what happens after the...
Companies can harness IoT and predictive analytics to sustain business continuity; predict and manage site performance during emergencies; minimize expensive reactive maintenance; and forecast equipment and maintenance budgets and expenditures. Providing cost-effective, uninterrupted service is challenging, particularly for organizations with geographically dispersed operations.
The IoTs will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, will demonstrate how to move beyond today's coding paradigm and share the must-have mindsets for removing complexity from the development proc...
SYS-CON Events announced today TechTarget has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. TechTarget is the Web’s leading destination for serious technology buyers researching and making enterprise technology decisions. Its extensive global networ...
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
The essence of data analysis involves setting up data pipelines that consist of several operations that are chained together – starting from data collection, data quality checks, data integration, data analysis and data visualization (including the setting up of interaction paths in that visualization). In our opinion, the challenges stem from the technology diversity at each stage of the data pipeline as well as the lack of process around the analysis.
Designing IoT applications is complex, but deploying them in a scalable fashion is even more complex. A scalable, API first IaaS cloud is a good start, but in order to understand the various components specific to deploying IoT applications, one needs to understand the architecture of these applications and figure out how to scale these components independently. In his session at @ThingsExpo, Nara Rajagopalan is CEO of Accelerite, will discuss the fundamental architecture of IoT applications, ...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, wh...
SYS-CON Events announced today that Tintri Inc., a leading producer of VM-aware storage (VAS) for virtualization and cloud environments, will exhibit at the 18th International CloudExpo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that Alert Logic, Inc., the leading provider of Security-as-a-Service solutions for the cloud, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Alert Logic, Inc., provides Security-as-a-Service for on-premises, cloud, and hybrid infrastructures, delivering deep security insight and continuous protection for customers at a lower cost than traditional security solutions. Ful...