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When using one of the new GMF Runtime 1.4.1 builds, a catastrophic issue occurs that you cannot open an existing diagram or create new shapes from the palette. Can be duplicated on a geoshapes diagram and create a dropshadow rectangle. !ENTRY org.eclipse.ui 4 0 2010-07-27 10:36:25.968 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.ExceptionInInitializerError at java.lang.J9VMInternals.initialize(Unknown Source) at org.eclipse.gmf.runtime.draw2d.ui.figures.RectangularDropShadow.<clinit>(Unknown Source) at java.lang.J9VMInternals.initializeImpl(Native Method) at java.lang.J9VMInternals.initialize(Unknown Source) at org.eclipse.gmf.runtime.draw2d.ui.figures.RectangularDropShadowLineBorder.<clinit>(Unknown Source) at java.lang.J9VMInternals.initializeImpl(Native Method) at java.lang.J9VMInternals.initialize(Unknown Source) at java.lang.J9VMInternals.initialize(Unknown Source) [snip]
The problem is caused by the latest GMF 1.4.1 builds. I can duplicate a similar issue by using the Eclipse GMF Geoshapes example and dropping a shadow rectangle on the diagram. I took Helios GA and the Geoshapes example is fine. As soon as I install only the GMF Runtime 1.4.1 build, I get the error: java.lang.NoClassDefFoundError: org.eclipse.gmf.runtime.draw2d.ui.figures.RectangularDropShadowLineBorder (initialization failure) at java.lang.J9VMInternals.initialize(J9VMInternals.java:140) at org.eclipse.gmf.runtime.diagram.ui.geoshapes.internal.editparts.ShadowRectangleEditPart.createNodeFigure(ShadowRectangleEditPart.java:43) at org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeNodeEditPart.createFigure(ShapeNodeEditPart.java:90) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.getFigure(AbstractGraphicalEditPart.java:494) at org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart.addChildVisual(DiagramEditPart.java:258) at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:210) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.addChild(GraphicalEditPart.java:1319) at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:771) at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:718) at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:633) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart.access$3(GraphicalEditPart.java:1) at org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart$3.run(GraphicalEditPart.java:861) [snip]
The problem is with the MANIFEST.MF in org.eclipse.gmf.runtime.draw2d.ui_1.4.1.v20100720-0030.jar . The problem has nothing to do with the code changes submitted in GMF. Somehow Bundle-ActivationPolicy: lazy was removed from the plugin when we incremented the bundle service version. It would appear Anthony mistakenly clicked the "Activate this plug-in when one of it's classes is loaded" when activating the editor and then blindly committed the change.
Fixed in HEAD and R1_4_maintenance