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To reproduce: - Create a Class Diagram and 2 Classes - Create a ContainmentLink between Classes - Try to undo this ContainmentLink creation The following exception occurs: null Error Tue Nov 09 14:35:29 CET 2010 Undo of operation was rolled back (possibly due to concurrent write) org.eclipse.emf.common.util.BasicEList$BasicIndexOutOfBoundsException: index=4, size=4 at org.eclipse.emf.common.util.BasicEList.get(BasicEList.java:352) at org.eclipse.emf.ecore.change.impl.ListChangeImpl.applyAndReverse(ListChangeImpl.java:535) at org.eclipse.emf.ecore.change.impl.ChangeDescriptionImpl.preApply(ChangeDescriptionImpl.java:474) at org.eclipse.emf.ecore.change.impl.ChangeDescriptionImpl.applyAndReverse(ChangeDescriptionImpl.java:321) at org.eclipse.emf.transaction.util.CompositeChangeDescription.applyAndReverse(CompositeChangeDescription.java:117) at org.eclipse.emf.workspace.AbstractEMFOperation.doUndo(AbstractEMFOperation.java:695) at org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand.doUndo(AbstractTransactionalCommand.java:260) at org.eclipse.emf.workspace.AbstractEMFOperation.undo(AbstractEMFOperation.java:370) at org.eclipse.gmf.runtime.common.core.command.CompositeCommand.doUndoWithResult(CompositeCommand.java:622) at org.eclipse.gmf.runtime.common.core.command.AbstractCommand.undo(AbstractCommand.java:216) at org.eclipse.core.commands.operations.DefaultOperationHistory.doUndo(DefaultOperationHistory.java:415) at org.eclipse.core.commands.operations.DefaultOperationHistory.undo(DefaultOperationHistory.java:1280) at org.eclipse.ui.operations.UndoActionHandler.runCommand(UndoActionHandler.java:78) at org.eclipse.ui.operations.OperationHistoryActionHandler$4.run(OperationHistoryActionHandler.java:311) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372) at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507) at org.eclipse.ui.internal.operations.TimeTriggeredProgressMonitorDialog.access$6(TimeTriggeredProgressMonitorDialog.java:1) at org.eclipse.ui.internal.operations.TimeTriggeredProgressMonitorDialog$2.run(TimeTriggeredProgressMonitorDialog.java:203) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.operations.TimeTriggeredProgressMonitorDialog.run(TimeTriggeredProgressMonitorDialog.java:216) at org.eclipse.ui.operations.OperationHistoryActionHandler.run(OperationHistoryActionHandler.java:326) at org.eclipse.gmf.runtime.common.ui.action.actions.global.GlobalUndoAction.doRun(GlobalUndoAction.java:245) at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.run(AbstractActionHandler.java:359) at org.eclipse.gmf.runtime.common.ui.action.ActionManager.run(ActionManager.java:229) at org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandler.runWithEvent(AbstractActionHandler.java:377) at org.eclipse.ui.actions.RetargetAction.runWithEvent(RetargetAction.java:230) at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:119) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:468) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:567) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:508) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:123) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1253) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052) 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.sendKeyEvent(Widget.java:1103) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1099) at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1508) at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4268) at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:345) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4160) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4873) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2459) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3655) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) 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:369) 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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
It is fixed. There was a editpolicy that execute a command to remove a label and this command was executed without an undoable context. This class has been removed, because I do not understand why it was created. this code was not commented. JUnit tests will be added in order to avoid this kind of bug.
test added in the revision 3699
