Description Brian Svihovec 2011-09-23 09:22:13 EDT

Using a development environment, or running the installable build with the -console option, open a RUIHandler that contains a Box widget in the VE.

In the console window, you will see the following exception being thrown:

org.eclipse.edt.mof.egl.PartNotFoundException: 
	at org.eclipse.edt.ide.core.internal.lookup.ProjectEnvironment.findPart(ProjectEnvironment.java:218)
	at org.eclipse.edt.ide.rui.visualeditor.internal.widget.WidgetDescriptorFactory.processWidgetContainer(WidgetDescriptorFactory.java:531)
	at org.eclipse.edt.ide.rui.visualeditor.internal.widget.WidgetDescriptorFactory.processWidget(WidgetDescriptorFactory.java:213)
	at org.eclipse.edt.ide.rui.visualeditor.internal.widget.WidgetDescriptorFactory.createWidgetDescriptor(WidgetDescriptorFactory.java:132)
	at org.eclipse.edt.ide.rui.visualeditor.internal.widget.WidgetDescriptorRegistry.createWidgetDescriptor(WidgetDescriptorRegistry.java:256)
	at org.eclipse.edt.ide.rui.visualeditor.internal.widget.WidgetDescriptorRegistry$Updater.initializeRegistry(WidgetDescriptorRegistry.java:110)
	at org.eclipse.edt.ide.rui.visualeditor.internal.widget.WidgetDescriptorRegistry$Updater.run(WidgetDescriptorRegistry.java:83)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

I believe this is related to the way that default annotation values have changed in EDT as compared to RBD.  

In WidgetDescriptorFactory, line 509, there is the following code:

Annotation containerAnnotation = (Annotation) widgetAnnotation.getValue( WIDGET_CONTAINER );
		if(containerAnnotation != null){
			isContainer = true;
			String layoutDataTypeTemplate = (String) containerAnnotation.getValue( WIDGET_LAYOUTDATATYPE );
			if (layoutDataTypeTemplate != null ) {

The Box widget specifies the VEContainer annotation as:

container = @VEContainer{}

which means that we get into the first 'if' block.  The default value for the WIDGET_LAYOUTDATATYPE (e.g. "layoutDataType") field is a String, so layoutDataTypeTemplate becomes the empty string, since no value was specified in the annotation.  It looks like our code will have to change so that it checks for the empty string instead of Null, since the field of the VEContainer annotation is not nullable.

NOTE: I think we need to scrub our code for all annotation accesses and see if there are other changes like this to be made.