Task 6:  
In this procedure, define an extension that customizes the data extraction functionality provided by the org.eclipse.birt.report.engine.dataextraction plug-in. This plug-in defines an extension point, which your plug-in uses to define a custom extension to retrieve data from the data set and generate the XML data required by the Flash chart.
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Figure 18-28  
Choose Finish. A message asks if you want to add a dependency to the org.eclipse.birt.report.engine plug-in. Choose Yes. The Extensions page displays the new extension to the plug-in.
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Table 18-1  
The supported format of this data extraction extension. Later, when you create the Flash chart’s dataURL variable, you pass the format value as an argument to the createDataURL( ) method.
The Java class that implements the IDataExtractionExtension interface. You create this class later.
The name of the extension. This name appears in the user interface.
Figure 18-29 shows the specified properties in the Extensions page.
Figure 18-29  
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Figure 18-30  

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