Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.

Bug 319300

Summary: [Compatibility] exiting causes NPE in compute function
Product: [Eclipse Project] e4 Reporter: Paul Webster <pwebster>
Component: UIAssignee: Remy Suen <remy.suen>
Status: RESOLVED FIXED QA Contact: Remy Suen <remy.suen>
Severity: normal    
Priority: P3 CC: emoffatt, remy.suen
Version: 1.0   
Target Milestone: 1.0 RC2   
Hardware: PC   
OS: Linux   
Whiteboard:
Attachments:
Description Flags
E4Application patch v1 none

Description Paul Webster CLA 2010-07-08 14:23:32 EDT 
Working from HEAD.  I quit and got 2 errors.

Clearing the context is causing an application level CompFunction to NPE.

!ENTRY org.eclipse.ui.workbench 4 2 2010-07-08 14:22:20.286
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.NullPointerException
	at org.eclipse.e4.ui.internal.workbench.swt.E4Application$2.compute(E4Application.java:419)
	at org.eclipse.e4.core.internal.contexts.ValueComputation.get(ValueComputation.java:122)
	at org.eclipse.e4.core.internal.contexts.EclipseContext.internalGet(EclipseContext.java:254)
	at org.eclipse.e4.core.internal.contexts.EclipseContext.get(EclipseContext.java:215)
	at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier.get(ContextObjectSupplier.java:148)
	at org.eclipse.e4.core.internal.di.InjectorImpl.resolveArgs(InjectorImpl.java:369)
	at org.eclipse.e4.core.internal.di.InjectorImpl.resolveRequestorArgs(InjectorImpl.java:324)
	at org.eclipse.e4.core.internal.di.InjectorImpl.resolveArguments(InjectorImpl.java:298)
	at org.eclipse.e4.core.internal.di.Requestor.resolveArguments(Requestor.java:108)
	at org.eclipse.e4.core.internal.contexts.ContextObjectSupplier$ContextInjectionListener.update(ContextObjectSupplier.java:44)
	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.PartRenderingEngine.clearContext(PartRenderingEngine.java:560)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:515)
	at org.eclipse.ui.internal.WorkbenchWindow.hardClose(WorkbenchWindow.java:1439)
	at org.eclipse.ui.internal.WorkbenchWindow.busyClose(WorkbenchWindow.java:1140)
	at org.eclipse.ui.internal.WorkbenchWindow.access$9(WorkbenchWindow.java:1119)
	at org.eclipse.ui.internal.WorkbenchWindow$6.run(WorkbenchWindow.java:1166)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchWindow.close(WorkbenchWindow.java:1164)
	at org.eclipse.ui.internal.Workbench$13.run(Workbench.java:1017)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.ui.internal.Workbench.busyClose(Workbench.java:1011)
	at org.eclipse.ui.internal.Workbench.access$11(Workbench.java:945)
	at org.eclipse.ui.internal.Workbench$14.run(Workbench.java:1087)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.Workbench.close(Workbench.java:1085)
	at org.eclipse.ui.internal.Workbench.close(Workbench.java:1058)
	at org.eclipse.ui.internal.handlers.QuitHandler.execute(QuitHandler.java:36)
	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:56)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:600)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:47)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:199)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:176)
	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.workbench.renderers.swt.HandledMenuItemRenderer$1.widgetSelected(HandledMenuItemRenderer.java:150)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3552)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3171)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:669)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:594)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:103)
	at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:535)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:519)
	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(NativeMethodAccessorImpl.java:48)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:600)
	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)
Comment 1 Remy Suen CLA 2010-07-08 14:39:55 EDT 
Created attachment 173800 [details]
E4Application patch v1

On shutdown, the root container can be null. This is valid.
Comment 2 Remy Suen CLA 2010-07-08 14:40:20 EDT 
Fixed in CVS HEAD.