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I've just created an minimal RCP and when I only define a RootContext (org.eclipse.ui.contexts.dialogAndWindow) but don't add a Child-Context (org.eclipse.ui.contexts.dialog). I get an Exception when opening my Live-Editor in the application. org.eclipse.core.commands.common.NotDefinedException: Cannot get the parent identifier from an undefined context. org.eclipse.ui.contexts.dialog at org.eclipse.core.commands.contexts.Context.getParentId(Context.java:201) at org.eclipse.e4.ui.bindings.internal.ContextSet$CComp.getLevel(ContextSet.java:48) at org.eclipse.e4.ui.bindings.internal.ContextSet$CComp.compare(ContextSet.java:37) at org.eclipse.e4.ui.bindings.internal.ContextSet$CComp.compare(ContextSet.java:1) at java.util.Arrays.mergeSort(Arrays.java:1270) at java.util.Arrays.sort(Arrays.java:1210) at java.util.Collections.sort(Collections.java:159) at org.eclipse.e4.ui.bindings.internal.ContextSet.<init>(ContextSet.java:76) at org.eclipse.e4.ui.bindings.internal.BindingTableManager.createContextSet(BindingTableManager.java:56) at org.eclipse.e4.ui.bindings.internal.BindingServiceImpl.setContextIds(BindingServiceImpl.java:214) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:47) at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier$ContextInjectionListener.update(ContextObjectSupplier.java:74) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:90) at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:333) at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:350) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener$2.run(ShellActivationListener.java:127) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.activate(ShellActivationListener.java:124) at org.eclipse.e4.ui.internal.workbench.swt.ShellActivationListener.handleEvent(ShellActivationListener.java:74) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1031) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3775) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1367) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1390) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1371) at org.eclipse.swt.widgets.Shell.windowDidBecomeKey(Shell.java:1892) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5024) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:213) at org.eclipse.swt.widgets.Widget.becomeKeyWindow(Widget.java:324) at org.eclipse.swt.widgets.Shell.becomeKeyWindow(Shell.java:478) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4856) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSWindow.makeKeyAndOrderFront(NSWindow.java:190) at org.eclipse.swt.widgets.Shell.makeKeyAndOrderFront(Shell.java:1130) at org.eclipse.swt.widgets.Shell.setWindowVisible(Shell.java:1740) at org.eclipse.swt.widgets.Shell.open(Shell.java:1173) at org.eclipse.e4.tools.emf.liveeditor.OpenLiveDialogHandler.run(OpenLiveDialogHandler.java:57) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:47) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:208) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:185) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:101) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:135) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:266) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:465) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:515) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:348) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher.java:294) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:76) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1031) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:3775) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1367) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1390) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1375) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1404) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1400) at org.eclipse.swt.widgets.Tree.sendKeyEvent(Tree.java:2431) at org.eclipse.swt.widgets.Control.keyDown(Control.java:2095) at org.eclipse.swt.widgets.Composite.keyDown(Composite.java:600) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4978) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:220) at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:1943) at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2008) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5040) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:4582) at org.eclipse.swt.widgets.Display.applicationProc(Display.java:4659) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:115) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3274) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:713) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:633) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:106) at org.eclipse.e4.ui.internal.workbench.swt.E4Application.start(E4Application.java:127) 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(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) 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) at org.eclipse.equinox.launcher.Main.main(Main.java:1383)
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.
I assume this has been fixed a while ago
