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Bug 327709

Summary:

[misc] Getting NPE in Ant editor

Product:

[WebTools] WTP Source Editing

Reporter:

David M. Karr <davidmichaelkarr>

Component:

wst.xml

Assignee:

wst.xml <wst.xml-inbox>

Status:

RESOLVED WORKSFORME

QA Contact:

Nitin Dahyabhai <thatnitind>

Severity:

normal

Priority:

CC:

nsand.dev

Version:

unspecified

Target Milestone:

---

Hardware:

OS:

Windows XP

Whiteboard:

Attachments:

Description	Flags
The build file that I'm getting the NPE on	none

Description David M. Karr

2010-10-13 15:41:41 EDT

Build Identifier: 20100917-0705

I was editing my Ant build.xml file when Eclipse started to act odd.  I then noticed a NullPointerException dialog.  The following is the stack trace from my .log file:

!ENTRY org.eclipse.ui.workbench 4 2 2010-10-13 12:38:28.982
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.NullPointerException
	at org.eclipse.wst.xml.ui.internal.tabletree.XMLMultiPageEditorPart.getDocument(XMLMultiPageEditorPart.java:897)
	at org.eclipse.wst.xml.ui.internal.tabletree.XMLMultiPageEditorPart.access$0(XMLMultiPageEditorPart.java:894)
	at org.eclipse.wst.xml.ui.internal.tabletree.XMLMultiPageEditorPart$ActivationListener.partOpened(XMLMultiPageEditorPart.java:164)
	at org.eclipse.ui.internal.PartListenerList$5.run(PartListenerList.java:132)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.runtime.Platform.run(Platform.java:888)
	at org.eclipse.ui.internal.PartListenerList.fireEvent(PartListenerList.java:57)
	at org.eclipse.ui.internal.PartListenerList.firePartOpened(PartListenerList.java:130)
	at org.eclipse.ui.internal.PartService.firePartOpened(PartService.java:276)
	at org.eclipse.ui.internal.WWinPartService$WWinListener.partOpened(WWinPartService.java:54)
	at org.eclipse.ui.internal.PartListenerList2$5.run(PartListenerList2.java:130)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.runtime.Platform.run(Platform.java:888)
	at org.eclipse.ui.internal.PartListenerList2.fireEvent(PartListenerList2.java:55)
	at org.eclipse.ui.internal.PartListenerList2.firePartOpened(PartListenerList2.java:128)
	at org.eclipse.ui.internal.PartService.firePartOpened(PartService.java:280)
	at org.eclipse.ui.internal.WorkbenchPagePartList.firePartOpened(WorkbenchPagePartList.java:35)
	at org.eclipse.ui.internal.PartList.partOpened(PartList.java:241)
	at org.eclipse.ui.internal.PartList.access$0(PartList.java:210)
	at org.eclipse.ui.internal.PartList$1.propertyChanged(PartList.java:40)
	at org.eclipse.ui.internal.WorkbenchPartReference.fireInternalPropertyChange(WorkbenchPartReference.java:375)
	at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:610)
	at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:289)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2863)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2768)
	at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2760)
	at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2711)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2707)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2691)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2682)
	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651)
	at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610)
	at org.eclipse.ui.internal.ide.handlers.OpenResourceHandler.execute(OpenResourceHandler.java:129)
	at org.eclipse.ui.internal.ide.handlers.OpenResourceHandler.run(OpenResourceHandler.java:181)
	at org.eclipse.ui.internal.handlers.ActionDelegateHandlerProxy.execute(ActionDelegateHandlerProxy.java:289)
	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(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)


Reproducible: Always

Comment 1 David M. Karr

2010-10-13 15:42:23 EDT

Created attachment 180819 [details]
The build file that I'm getting the NPE on

Comment 2 Nitin Dahyabhai

2010-10-13 16:35:44 EDT

That's actually not the Ant editor.  Opening your file with the Ant editor (check the file's context menu for an "Open With" submenu) should proceed fine.

Comment 3 David M. Karr

2010-10-13 16:42:41 EDT

I don't know what this stack trace tells you, but I most certainly am in the Ant Editor. The editor icon is the ant on paper icon, and the Outline view shows my targets and lets me execute them.

Comment 4 Nick Sandonato

2011-11-15 11:43:09 EST

Hi David,

I think Nitin's comment comes from XMLMultiPageEditorPart being in the stack trace. I know it's been awhile, but did this NPE occur when you opened the file itself or did you happen to not notice it until Eclipse started to act odd?

Has this continued to be a problem as well? Since this bug was opened, a few null checks were added. So this may likely not occur anymore.

Comment 5 David M. Karr

2011-11-15 11:47:30 EST

I don't remember the circumstances of the issue, and I haven't seen it since then.

Comment 6 Nick Sandonato

2011-11-21 09:56:30 EST

Resolving since I've been unable to reproduce, and we should have cleaned up the area of code where the NPE would be thrown from. Thanks for your response, David.