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Bug 363321

Summary:	drag and drop elements in gmf editor causes NullPointerException
Product:	[Modeling] GMF-Runtime	Reporter:	Chris B. <moctodliamelgoogtaelgoog>
Component:	General	Assignee:	Project Inbox <gmf-runtime-inbox>
Status:	NEW ---	QA Contact:
Severity:	major
Priority:	P3
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description Chris B.

2011-11-09 09:46:52 EST

Build Identifier: M20110909-1335

java.lang.NullPointerException
	at org.eclipse.emf.ecore.impl.EClassImpl.getFeatureID(EClassImpl.java:1466)
	at org.eclipse.emf.ecore.util.BasicExtendedMetaData.getAffiliation(BasicExtendedMetaData.java:1339)
	at org.eclipse.emf.edit.command.SetCommand.prepare(SetCommand.java:525)
	at org.eclipse.emf.common.command.AbstractCommand.canExecute(AbstractCommand.java:114)
	at org.eclipse.emf.edit.command.AbstractOverrideableCommand.doCanExecute(AbstractOverrideableCommand.java:120)
	at org.eclipse.emf.edit.command.AbstractOverrideableCommand.canExecute(AbstractOverrideableCommand.java:113)
	at org.eclipse.emf.edit.command.DragAndDropCommand.prepareDropLinkOn(DragAndDropCommand.java:801)
	at org.eclipse.emf.edit.command.DragAndDropCommand.prepareDropOn(DragAndDropCommand.java:707)
	at org.eclipse.emf.edit.command.DragAndDropCommand.prepare(DragAndDropCommand.java:307)
	at org.eclipse.emf.common.command.AbstractCommand.canExecute(AbstractCommand.java:114)
	at org.eclipse.emf.edit.command.DragAndDropCommand.validate(DragAndDropCommand.java:892)
	at org.eclipse.emf.edit.ui.dnd.EditingDomainViewerDropAdapter.helper(EditingDomainViewerDropAdapter.java:311)
	at org.eclipse.emf.edit.ui.dnd.EditingDomainViewerDropAdapter.dragOver(EditingDomainViewerDropAdapter.java:190)
	at org.eclipse.swt.dnd.DNDListener.handleEvent(DNDListener.java:80)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)
	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:774)
	at org.eclipse.swt.dnd.DropTarget.DragOver(DropTarget.java:366)
	at org.eclipse.swt.dnd.DropTarget.DragOver_64(DropTarget.java:340)
	at org.eclipse.swt.dnd.DropTarget$3.method4(DropTarget.java:252)
	at org.eclipse.swt.internal.ole.win32.COMObject.callback4(COMObject.java:101)
	at org.eclipse.swt.internal.ole.win32.COM.DoDragDrop(Native Method)
	at org.eclipse.swt.dnd.DragSource.drag(DragSource.java:363)
	at org.eclipse.swt.dnd.DragSource.access$0(DragSource.java:289)
	at org.eclipse.swt.dnd.DragSource$1.handleEvent(DragSource.java:172)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

eclipse.buildId=M20110909-1335
java.version=1.7.0_01
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE
Framework arguments:  -product org.eclipse.epp.package.modeling.product
Command-line arguments:  -data C:\Workspace37GMF -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.modeling.product

Reproducible: Always

Steps to Reproduce:
1.create new element e.g. figure gallery->new child->figure descriptor 
2.try to position the element within same elements via DnD 
3.editor doesn't react on DnD actions at all or the current view freezes with the reference line that indicates a DnD action