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Jason Weathersby

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The Eclipse platform is an open source, integrated system of application development tools that you implement and extend using a plug-in interface. The Eclipse Business Intelligence Reporting Tool (BIRT) is a set of plug-in extensions that enable a developer to add reporting functionality to an application. BIRT provides a Report Engine API that a developer can use to create a customized report generator application. The org.eclipse.birt.report.engine.api package contains a set of interfaces and implementation classes that supports integrating the runtime part of BIRT into an application. The BIRT Report Engine can provide report generation and rendering services in the following environments: Stand-alone engine: A Java developer uses a stand-alone engine to render a BIRT report from a report design (.rptdesign) file. In this environment, the Java developer create... (more)

Calling Spring Objects from BIRT Expressions and Event Handlers

Several examples are already available on the web, which demonstrate calling the BIRT engine from a Spring MVC application. Integrating BIRT with Spring in a Web application and Eclipse BIRT in Spring web applications are a couple of examples. There is not much information on how to include Spring Beans within a report design. This post details an example of injecting the Spring ApplicationContext into BIRT’s AppContext object which will allow you to call your Spring Beans in BIRT expressions or event handlers. A link for the source is listed at the bottom. A readme file containing i... (more)

Calling Client Side JavaScript from a BIRT Chart

JavaScript Track at Cloud Expo A couple of months ago I detailed a new feature for BIRT charts that allows multiple hyperlinks to be attached to one the supported events. That post is available here. In this post I will discuss using a BIRT Text element that contains script which executes within the client browser and contains functions that are called from rendered charts. General Information BIRT currently supports interactivity on many chart components like chart series, title, axis, and the legend. The components that support interactivity will depend on the type of chart bein... (more)

BIRT and OLAP

BIRT Introduced OLAP style data cubes and crosstabs in version 2.2 and while they have been around for some time we still get a lot of questions on how to use and manipulate them. Below are just some of the resources that have been posted to BIRT Exchange that should help you with cubes and crosstabs. Introduction Resources To get an idea of what a BIRT cube is and how to tie it to a crosstab report item, take a look at this article which provides a detailed write-up of the technology and supplies some examples. To see a recorded demonstration of a crosstab style report being build s... (more)

What's the Difference Between dataSetRow["FIELD"] and row["FIELD"]

One of the most common questions for people that are new to BIRT is about how to ask data from the DataSet in the report.  The question is when building expressions should I use dataSetRow["FIELD"] or row["FIELD"]? So let me see if I can set the record straight.  When data is acquired, it is acquired by a DataSet, so the following query in a JDBC DataSet will create a three field resultset: select CITY, STATE, COUNTRY from CUSTOMERS Any script or expressions written on the DataSet will be written to use the format row["FIELD_NAME"]; So if we add a computed column to the DataSet c... (more)