Welcome!

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

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
SYS-CON Events announced today that Tappest will exhibit MooseFS at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. MooseFS is a breakthrough concept in the storage industry. It allows you to secure stored data with either duplication or erasure coding using any server. The newest – 4.0 version of the software enables users to maintain the redundancy level with even 50% less hard drive space required. The software func...
Most technology leaders, contemporary and from the hardware era, are reshaping their businesses to do software in the hope of capturing value in IoT. Although IoT is relatively new in the market, it has already gone through many promotional terms such as IoE, IoX, SDX, Edge/Fog, Mist Compute, etc. Ultimately, irrespective of the name, it is about deriving value from independent software assets participating in an ecosystem as one comprehensive solution.
SYS-CON Events announced today that EARP will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. "We are a software house, so we perfectly understand challenges that other software houses face in their projects. We can augment a team, that will work with the same standards and processes as our partners' internal teams. Our teams will deliver the same quality within the required time and budget just as our partn...
SYS-CON Events announced today that delaPlex will exhibit at SYS-CON's @ThingsExpo, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. delaPlex pioneered Software Development as a Service (SDaaS), which provides scalable resources to build, test, and deploy software. It’s a fast and more reliable way to develop a new product or expand your in-house team.
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu’s platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
SYS-CON Events announced today that Outscale, a global pure play Infrastructure as a Service provider and strategic partner of Dassault Systèmes, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Founded in 2010, Outscale simplifies infrastructure complexities and boosts the business agility of its customers. Outscale delivers a secure, reliable and industrial strength solution for its customers, which in...
SYS-CON Events announced today that Outscale will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Outscale's technology makes an automated and adaptable Cloud available to businesses, supporting them in the most complex IT projects while controlling their operational aspects. You boost your IT infrastructure's reactivity, with request responses that only take a few seconds.
SYS-CON Events announced today that Systena America will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Systena Group has been in business for various software development and verification in Japan, US, ASEAN, and China by utilizing the knowledge we gained from all types of device development for various industries including smartphones (Android/iOS), wireless communication, security technology and IoT serv...
DevOps at Cloud Expo – being held October 31 - November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA – announces that its Call for Papers is open. Born out of proven success in agile development, cloud computing, and process automation, DevOps is a macro trend you cannot afford to miss. From showcase success stories from early adopters and web-scale businesses, DevOps is expanding to organizations of all sizes, including the world's largest enterprises – and delivering real r...
Five years ago development was seen as a dead-end career, now it’s anything but – with an explosion in mobile and IoT initiatives increasing the demand for skilled engineers. But apart from having a ready supply of great coders, what constitutes true ‘DevOps Royalty’? It’ll be the ability to craft resilient architectures, supportability, security everywhere across the software lifecycle. In his keynote at @DevOpsSummit at 20th Cloud Expo, Jeffrey Scheaffer, GM and SVP, Continuous Delivery Busine...
In order to meet the rapidly changing demands of today’s customers, companies are continually forced to redefine their business strategies in order to meet these needs, stay relevant and continue to see profitable growth. IoT deployment and development is integral in this transformation, and today businesses are increasingly seeing the value of investing their resources into IoT deployments. These technologies are able increase ROI through projects such as connecting supply chains or enabling sm...
SYS-CON Events announced today that CollabNet, a global leader in enterprise software development, release automation and DevOps solutions, will be a Bronze Sponsor of SYS-CON's 20th International Cloud Expo®, taking place from June 6-8, 2017, at the Javits Center in New York City, NY. CollabNet offers a broad range of solutions with the mission of helping modern organizations deliver quality software at speed. The company’s latest innovation, the DevOps Lifecycle Manager (DLM), supports Value S...
SYS-CON Events announced today that Peak 10, Inc., a national IT infrastructure and cloud services provider, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Peak 10 provides reliable, tailored data center and network services, cloud and managed services. Its solutions are designed to scale and adapt to customers’ changing business needs, enabling them to lower costs, improve performance and focus intern...
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, whic...
Everywhere we turn in our industry we can find strong opinions about the direction, type and nature of cloud’s impact on computing and business. Another word that is used in every context in our industry is “hybrid.” In his session at 20th Cloud Expo, Alvaro Gonzalez, Director of Technical, Partner and Field Marketing at Peak 10, will use a combination of a few conceptual props and some research recently commissioned by Peak 10 to offer a real-world consideration of how the various categories of...
SYS-CON Events announced today that Super Micro Computer, Inc., a global leader in compute, storage and networking technologies, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Supermicro (NASDAQ: SMCI), the leading innovator in high-performance, high-efficiency server technology, is a premier provider of advanced server Building Block Solutions® for Data Center, Cloud Computing, Enterprise IT, Hadoop/...
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend @CloudExpo | @ThingsExpo, June 6-8, 2017, at the Javits Center in New York City, NY and October 31 - November 2, 2017, Santa Clara Convention Center, CA. Learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
Multiple data types are pouring into IoT deployments. Data is coming in small packages as well as enormous files and data streams of many sizes. Widespread use of mobile devices adds to the total. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists will look at the tools and environments that are being put to use in IoT deployments, as well as the team skills a modern enterprise IT shop needs to keep things running, get a handle on all this data, and deli...
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
In his opening keynote at 20th Cloud Expo, Michael Maximilien, Research Scientist, Architect, and Engineer at IBM, will motivate why realizing the full potential of the cloud and social data requires artificial intelligence. By mixing Cloud Foundry and the rich set of Watson services, IBM's Bluemix is the best cloud operating system for enterprises today, providing rapid development and deployment of applications that can take advantage of the rich catalog of Watson services to help drive insigh...