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Exception when extending a VE component [message #140125] Fri, 31 August 2007 15:36 Go to next message
Krishna Vedula is currently offline Krishna VedulaFriend
Messages: 10
Registered: July 2009
Junior Member
Hello All,
I am trying to extend VE to build GWT project. I have created a Label that creates a GWT label and the EditPart displays a draw2d.Label. When I create an instance of the label i get the following error

java.lang.ClassCastException: org.eclipse.ve.internal.cde.emf.EMFAnnotationLinkagePolicy
at org.eclipse.ve.internal.cde.core.AnnotationPolicy$Annotation Listener. <init>(AnnotationPolicy.java:319)
at org.eclipse.ve.internal.cde.core.VisualInfoPolicy$VisualInfo Listener. <init>(VisualInfoPolicy.java:144)
at org.eclipse.ve.internal.cde.core.VisualInfoXYLayoutEditPolic y$1. <init>(VisualInfoXYLayoutEditPolicy.java:357)
at org.eclipse.ve.internal.cde.core.VisualInfoXYLayoutEditPolic y$VisualConstraintRefreshPolicy.activate(VisualInfoXYLayoutE ditPolicy.java:357)
at org.eclipse.gef.editparts.AbstractEditPart.installEditPolicy (AbstractEditPart.java:641)
at org.eclipse.ve.internal.cde.core.VisualInfoXYLayoutEditPolic y.decorateChild(VisualInfoXYLayoutEditPolicy.java:454)
at org.eclipse.gef.editpolicies.LayoutEditPolicy$1.childAdded(L ayoutEditPolicy.java:78)
at org.eclipse.gef.editparts.AbstractEditPart.fireChildAdded(Ab stractEditPart.java:375)
at org.eclipse.gef.editparts.AbstractEditPart.addChild(Abstract EditPart.java:202)
at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(A bstractEditPart.java:727)
at org.eclipse.ve.internal.java.core.CompositionComponentsGraph icalEditPart.access$0(CompositionComponentsGraphicalEditPart .java:1)
at org.eclipse.ve.internal.java.core.CompositionComponentsGraph icalEditPart$2.doRun(CompositionComponentsGraphicalEditPart. java:82)
at org.eclipse.ve.internal.cde.core.EditPartRunnable.run(EditPa rtRunnable.java:43)
at org.eclipse.ve.internal.cde.core.ModelChangeController$1$Saf eRunnable.run(ModelChangeController.java:449)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.ve.internal.cde.core.ModelChangeController.execu teAsyncRunnables(ModelChangeController.java:466)
at org.eclipse.ve.internal.cde.core.ModelChangeController.trans actionEnded(ModelChangeController.java:415)
at org.eclipse.ve.internal.cde.core.ModelChangeController.doMod elChanges(ModelChangeController.java:253)
at org.eclipse.ve.internal.java.codegen.editorpart.JavaVisualEd itorCommandStack.execute(JavaVisualEditorCommandStack.java:5 2)
at org.eclipse.gef.tools.AbstractTool.executeCommand(AbstractTo ol.java:388)
at org.eclipse.gef.tools.AbstractTool.executeCurrentCommand(Abs tractTool.java:400)
at org.eclipse.gef.tools.CreationTool.performCreation(CreationT ool.java:254)
at org.eclipse.gef.tools.CreationTool.handleButtonUp(CreationTo ol.java:178)
at org.eclipse.gef.tools.AbstractTool.mouseUp(AbstractTool.java :1053)
at org.eclipse.gef.EditDomain.mouseUp(EditDomain.java:259)
at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMouse Released(DomainEventDispatcher.java:374)
at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseUp(Li ghtweightSystem.java:538)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:137)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3348)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2968)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:1930)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1894)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:422)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplicatio n.java:95)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(Pl atformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336 )
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)

When I put a breakpoint in the code, I see that the AnnotationPolicy is looking for "GenericAnnotationLinkagePolicy" and is getting a "org.eclipse.ve.internal.cde.emf.EMFAnnotationLinkagePolicy" class. why is this happening? Why am getting errors in the "cde" packages? I thought these are for "c" development.

Thank you
Krishna

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Re: Exception when extending a VE component [message #140316 is a reply to message #140125] Sat, 08 September 2007 02:29 Go to previous message
Philippe Ombredanne is currently offline Philippe OmbredanneFriend
Messages: 386
Registered: July 2009
Senior Member
"Krishna Vedula" <krishna.vedula@gmail.com> wrote in message
news:796667946.20891188574636917.JavaMail.root@cp9.dzone.com...
> Hello All,
> I am trying to extend VE to build GWT project. I have created a Label
that creates a GWT label and the EditPart displays a draw2d.Label. When I
create an instance of the label i get the following error
>
> java.lang.ClassCastException:
org.eclipse.ve.internal.cde.emf.EMFAnnotationLinkagePolicy
> at
org.eclipse.ve.internal.cde.core.AnnotationPolicy$Annotation Listener. <init>(
AnnotationPolicy.java:319)
> at
org.eclipse.ve.internal.cde.core.VisualInfoPolicy$VisualInfo Listener. <init>(
VisualInfoPolicy.java:144)

Could you post a bug in bugzilla?


> When I put a breakpoint in the code, I see that the AnnotationPolicy is
looking for "GenericAnnotationLinkagePolicy" and is getting a
"org.eclipse.ve.internal.cde.emf.EMFAnnotationLinkagePolicy" class. why is
this happening? Why am getting errors in the "cde" packages? I thought these
are for "c" development.
>
Those classes are not for c development but the common data editor

--
Cheers, Philippe

Report message to a moderator

Re: Exception when extending a VE component [message #616489 is a reply to message #140125] Sat, 08 September 2007 02:29 Go to previous message
Philippe Ombredanne is currently offline Philippe OmbredanneFriend
Messages: 386
Registered: July 2009
Senior Member
"Krishna Vedula" <krishna.vedula@gmail.com> wrote in message
news:796667946.20891188574636917.JavaMail.root@cp9.dzone.com...
> Hello All,
> I am trying to extend VE to build GWT project. I have created a Label
that creates a GWT label and the EditPart displays a draw2d.Label. When I
create an instance of the label i get the following error
>
> java.lang.ClassCastException:
org.eclipse.ve.internal.cde.emf.EMFAnnotationLinkagePolicy
> at
org.eclipse.ve.internal.cde.core.AnnotationPolicy$Annotation Listener. <init>(
AnnotationPolicy.java:319)
> at
org.eclipse.ve.internal.cde.core.VisualInfoPolicy$VisualInfo Listener. <init>(
VisualInfoPolicy.java:144)

Could you post a bug in bugzilla?


> When I put a breakpoint in the code, I see that the AnnotationPolicy is
looking for "GenericAnnotationLinkagePolicy" and is getting a
"org.eclipse.ve.internal.cde.emf.EMFAnnotationLinkagePolicy" class. why is
this happening? Why am getting errors in the "cde" packages? I thought these
are for "c" development.
>
Those classes are not for c development but the common data editor

--
Cheers, Philippe

Report message to a moderator

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