Click here to close now.




















Welcome!

Java IoT Authors: Pat Romanski, Elizabeth White, Dana Gardner, Orlando Bayter, Hurricane Labs

Related Topics: Eclipse, Java IoT, Open Source Cloud

Eclipse: Article

Developing an Eclipse BIRT Report Item Extension

Architecture and framework

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.
Listing 1 shows the automatically generated manifest file plugin.xml for the rotated label report item extension that describes the plug-in's activation framework to the run-time environment.

After defining the plug-in framework in the Eclipse PDE, the developer makes the code-based extensions required to complete the plug-in development process.

The rotated label report item extension implements the following interfaces and classes:

  • org.eclipse.birt.report.designer.ui.extensions specifies the following interfaces:
    - IPropertyTabUI - Represents a new tab in the Property Editor view, creating the UI, updating property values on request, and notifying the BIRT framework of any UI-based property change. PropertyTabUIAdapter is the adapter class that implements this interface.
    - IReportItemLabelProvider - Defines the interface for the accessor method that provides the label text. ReportItemLabelProvider is the adapter class that implements this interface.
    - IReportItemPropertyEditUI - Provides the interface for defining tabs in the Property Editor.
  • org.eclipse.birt.report.designer.ui.views.attributes.providers.PropertyProcessor provides accessor methods for processing general property information.
  • org.eclipse.birt.report.engine.extension
    - IRowSet - Defines the interface to a row set. Provides metadata, grouping level, and row navigation methods.
    - IReportItemPresentation - Defines the interface for presentation of a report item extension. IReportItem-Presentation sets the locale, resolution, output, and image formats and processes the extended item in the report presentation environment. ReportItemPresentationBase is the adapter class that implements this interface.
  • org.eclipse.birt.report.model.api
    - DesignElementHandle - Functions as the base class for all report elements. DesignElementHandle provides a high-level interface to the BIRT report model. The class provides the generic services for all elements. Derived classes provide specialized methods for each element type. DesignElementHandle implements the interface, org.eclipse.birt.report.model.elements.interfaces.IDesignElementModel.
    - DesignEngine - Provides an interface to the BIRT design engine. DesignEngine instantiates a session handle to use when creating a new design, opening an existing design, and managing design processing. The session handle contains the report design's state. DesignEngine implements the interface, IDesignEngine interface.
    - ExtendedItemHandle - Provides a handle to an extended item that appears in a section of a report. The extended report item can have properties such as size, position, style, visibility rules, or a binding to a data source. ExtendedItemHandle extends ReportItemHandle, an abstract base class that extends DesignElement-Handle.
  • org.eclipse.birt.report.model.elements.Style extends org.eclipse.birt.report.model.core.StyleElement, the base class for report elements with a style, and implements org.eclipse.birt.report.model.elements.interfaces.IStyleModel, the interface for storing style element constants.
  • org.eclipse.birt.report.model.api.extension specifies the following interfaces:
    - IMessages - Defines the interface for getting a localized message from a message file using a resource key.
    - IPropertyDefinition - Defines the interface for the accessor methods that describe a property. PropertyDefinition is the adapter class that implements this interface.
    - IReportItem - Defines the interface for an instance of an extended report element. There is a one-to-one correspondence between the BIRT report item and this implementation. ReportItem is the adapter class that implements this interface.
    - IReportItemFactory - Defines the interface for the factory that creates an instance of the extended element, IReportItem. IReportItem stores the model data and serializes the model state. ReportItemFactory is the adapter class that implements this interface.
  • org.eclipse.birt.report.model.metadata.PropertyType functions as the base class for the metadata of a property type. A property type provides the display name, data validation and conversion methods, XML name, and other processing. PropertyType implements the interface, org.eclipse.birt.re-port.model.api.metadata.IPropertyType.
  • org.eclipse.core.runtime.Plugin defines the basic methods for starting, managing, and stopping the plug-in instance.

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 (0)

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.


@ThingsExpo Stories
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
For IoT to grow as quickly as analyst firms’ project, a lot is going to fall on developers to quickly bring applications to market. But the lack of a standard development platform threatens to slow growth and make application development more time consuming and costly, much like we’ve seen in the mobile space. In his session at @ThingsExpo, Mike Weiner, Product Manager of the Omega DevCloud with KORE Telematics Inc., discussed the evolving requirements for developers as IoT matures and conducted a live demonstration of how quickly application development can happen when the need to comply wit...
Converging digital disruptions is creating a major sea change - Cisco calls this the Internet of Everything (IoE). IoE is the network connection of People, Process, Data and Things, fueled by Cloud, Mobile, Social, Analytics and Security, and it represents a $19Trillion value-at-stake over the next 10 years. In her keynote at @ThingsExpo, Manjula Talreja, VP of Cisco Consulting Services, discussed IoE and the enormous opportunities it provides to public and private firms alike. She will share what businesses must do to thrive in the IoE economy, citing examples from several industry sectors.
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Opening Keynote at 16th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, d...
Explosive growth in connected devices. Enormous amounts of data for collection and analysis. Critical use of data for split-second decision making and actionable information. All three are factors in making the Internet of Things a reality. Yet, any one factor would have an IT organization pondering its infrastructure strategy. How should your organization enhance its IT framework to enable an Internet of Things implementation? In his session at @ThingsExpo, James Kirkland, Red Hat's Chief Architect for the Internet of Things and Intelligent Systems, described how to revolutionize your archit...
The Internet of Things is not only adding billions of sensors and billions of terabytes to the Internet. It is also forcing a fundamental change in the way we envision Information Technology. For the first time, more data is being created by devices at the edge of the Internet rather than from centralized systems. What does this mean for today's IT professional? In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists addressed this very serious issue of profound change in the industry.
Discussions about cloud computing are evolving into discussions about enterprise IT in general. As enterprises increasingly migrate toward their own unique clouds, new issues such as the use of containers and microservices emerge to keep things interesting. In this Power Panel at 16th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists addressed the state of cloud computing today, and what enterprise IT professionals need to know about how the latest topics and trends affect their organization.
The Internet of Everything (IoE) brings together people, process, data and things to make networked connections more relevant and valuable than ever before – transforming information into knowledge and knowledge into wisdom. IoE creates new capabilities, richer experiences, and unprecedented opportunities to improve business and government operations, decision making and mission support capabilities.
There will be 150 billion connected devices by 2020. New digital businesses have already disrupted value chains across every industry. APIs are at the center of the digital business. You need to understand what assets you have that can be exposed digitally, what their digital value chain is, and how to create an effective business model around that value chain to compete in this economy. No enterprise can be complacent and not engage in the digital economy. Learn how to be the disruptor and not the disruptee.
Akana has released Envision, an enhanced API analytics platform that helps enterprises mine critical insights across their digital eco-systems, understand their customers and partners and offer value-added personalized services. “In today’s digital economy, data-driven insights are proving to be a key differentiator for businesses. Understanding the data that is being tunneled through their APIs and how it can be used to optimize their business and operations is of paramount importance,” said Alistair Farquharson, CTO of Akana.
Business as usual for IT is evolving into a "Make or Buy" decision on a service-by-service conversation with input from the LOBs. How does your organization move forward with cloud? In his general session at 16th Cloud Expo, Paul Maravei, Regional Sales Manager, Hybrid Cloud and Managed Services at Cisco, discusses how Cisco and its partners offer a market-leading portfolio and ecosystem of cloud infrastructure and application services that allow you to uniquely and securely combine cloud business applications and services across multiple cloud delivery models.
The enterprise market will drive IoT device adoption over the next five years. In his session at @ThingsExpo, John Greenough, an analyst at BI Intelligence, division of Business Insider, analyzed how companies will adopt IoT products and the associated cost of adopting those products. John Greenough is the lead analyst covering the Internet of Things for BI Intelligence- Business Insider’s paid research service. Numerous IoT companies have cited his analysis of the IoT. Prior to joining BI Intelligence, he worked analyzing bank technology for Corporate Insight and The Clearing House Payment...
It is one thing to build single industrial IoT applications, but what will it take to build the Smart Cities and truly society-changing applications of the future? The technology won’t be the problem, it will be the number of parties that need to work together and be aligned in their motivation to succeed. In his session at @ThingsExpo, Jason Mondanaro, Director, Product Management at Metanga, discussed how you can plan to cooperate, partner, and form lasting all-star teams to change the world and it starts with business models and monetization strategies.
In his keynote at 16th Cloud Expo, Rodney Rogers, CEO of Virtustream, discussed the evolution of the company from inception to its recent acquisition by EMC – including personal insights, lessons learned (and some WTF moments) along the way. Learn how Virtustream’s unique approach of combining the economics and elasticity of the consumer cloud model with proper performance, application automation and security into a platform became a breakout success with enterprise customers and a natural fit for the EMC Federation.
"Optimal Design is a technology integration and product development firm that specializes in connecting devices to the cloud," stated Joe Wascow, Co-Founder & CMO of Optimal Design, in this SYS-CON.tv interview at @ThingsExpo, held June 9-11, 2015, at the Javits Center in New York City.
SYS-CON Events announced today that CommVault has been named “Bronze Sponsor” of SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. A singular vision – a belief in a better way to address current and future data management needs – guides CommVault in the development of Singular Information Management® solutions for high-performance data protection, universal availability and simplified management of data on complex storage networks. CommVault's exclusive single-platform architecture gives companies unp...
Electric Cloud and Arynga have announced a product integration partnership that will bring Continuous Delivery solutions to the automotive Internet-of-Things (IoT) market. The joint solution will help automotive manufacturers, OEMs and system integrators adopt DevOps automation and Continuous Delivery practices that reduce software build and release cycle times within the complex and specific parameters of embedded and IoT software systems.
"ciqada is a combined platform of hardware modules and server products that lets people take their existing devices or new devices and lets them be accessible over the Internet for their users," noted Geoff Engelstein of ciqada, a division of Mars International, in this SYS-CON.tv interview at @ThingsExpo, held June 9-11, 2015, at the Javits Center in New York City.
Internet of Things is moving from being a hype to a reality. Experts estimate that internet connected cars will grow to 152 million, while over 100 million internet connected wireless light bulbs and lamps will be operational by 2020. These and many other intriguing statistics highlight the importance of Internet powered devices and how market penetration is going to multiply many times over in the next few years.
SYS-CON Events announced today that Dyn, the worldwide leader in Internet Performance, will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Dyn is a cloud-based Internet Performance company. Dyn helps companies monitor, control, and optimize online infrastructure for an exceptional end-user experience. Through a world-class network and unrivaled, objective intelligence into Internet conditions, Dyn ensures traffic gets delivered faster, safer, and more reliably than ever.