NPE when openning struts-config.xml

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This topic has 5 replies, 2 voices, and was last updated 20 years, 10 months ago by Riyad Kalla.

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September 16, 2004 at 8:22 am #215324 Reply

JonathanOddy

Member

I get a periodic NullPointerException being thrown when openning my struts-config.xml file. This doesn’t happen everytime it is openned, I get a message box “An error has occurred. See error log for more details”. The file is then displayed within the editor pane, however the edit pane only contains the “source” tab. Closing Eclipse and restarting “fixes” the problem.


Stack trace is: 
!ENTRY org.eclipse.core.runtime 4 2 Sep 16, 2004 14:16:57.945
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.runtime".
!STACK 0
java.lang.NullPointerException
        at com.genuitec.eclipse.struts.editor.model.ModelManager.getGlobalForwardConfigs(Unknown Source)
        at com.genuitec.eclipse.struts.editor.modeler.model.StrutsConfigDiagram.synchronizeDiagram(Unknown Source)
        at com.genuitec.eclipse.struts.editor.modeler.model.StrutsConfigDiagram.<init>(Unknown Source)
        at com.genuitec.eclipse.struts.editor.modeler.core.StrutsEditor.setInput(Unknown Source)
        at org.eclipse.gef.ui.parts.GraphicalEditor.init(GraphicalEditor.java:271)
        at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:117)
        at com.genuitec.eclipse.struts.editor.multipage.StrutsConfigEditor.createFlowModeler(Unknown Source)
        at com.genuitec.eclipse.struts.editor.multipage.StrutsConfigEditor.getAdapter(Unknown Source)
        at org.eclipse.search2.internal.ui.text.EditorAnnotationManager.createHighlighter(EditorAnnotationManager.java:114)
        at org.eclipse.search2.internal.ui.text.EditorAnnotationManager.<init>(EditorAnnotationManager.java:46)
        at org.eclipse.search2.internal.ui.text.WindowAnnotationManager.startHighlighting(WindowAnnotationManager.java:74)
        at org.eclipse.search2.internal.ui.text.WindowAnnotationManager.access$1(WindowAnnotationManager.java:69)
        at org.eclipse.search2.internal.ui.text.WindowAnnotationManager$1.partVisible(WindowAnnotationManager.java:59)
        at org.eclipse.ui.internal.PartListenerList2$7.run(PartListenerList2.java:139)
        at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
        at org.eclipse.core.runtime.Platform.run(Platform.java:747)
        at org.eclipse.ui.internal.PartListenerList2.firePartVisible(PartListenerList2.java:137)
        at org.eclipse.ui.internal.WWinPartService$1.partVisible(WWinPartService.java:68)
        at org.eclipse.ui.internal.PartListenerList2$7.run(PartListenerList2.java:139)
        at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
        at org.eclipse.core.runtime.Platform.run(Platform.java:747)
        at org.eclipse.ui.internal.PartListenerList2.firePartVisible(PartListenerList2.java:137)
        at org.eclipse.ui.internal.WorkbenchPage$1.propertyChange(WorkbenchPage.java:139)
        at org.eclipse.ui.internal.LayoutPart.setVisible(LayoutPart.java:268)
        at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:317)
        at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:122)
        at org.eclipse.ui.internal.presentations.DefaultPartPresentation.selectPart(DefaultPartPresentation.java:1111)
        at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:946)
        at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:921)
        at org.eclipse.ui.internal.EditorStack.setVisibleEditor(EditorStack.java:170)
        at org.eclipse.ui.internal.EditorAreaHelper.setVisibleEditor(EditorAreaHelper.java:338)
        at org.eclipse.ui.internal.EditorAreaHelper.openEditor(EditorAreaHelper.java:268)
        at org.eclipse.ui.internal.EditorManager$4.run(EditorManager.java:697)
        at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
        at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:686)
        at org.eclipse.ui.internal.EditorManager.openInternalEditor(EditorManager.java:782)
        at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:585)
        at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:573)
        at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2201)
        at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2134)
        at org.eclipse.ui.internal.WorkbenchPage.access$6(WorkbenchPage.java:2126)
        at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2113)
        at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
        at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2108)
        at org.eclipse.ui.ide.IDE.openEditor(IDE.java:299)
        at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:137)
        at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:110)
        at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open(OpenActionUtil.java:49)
        at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:164)
        at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:150)
        at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:212)
        at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:188)
        at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:289)
        at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:490)
        at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:429)
        at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
        at org.eclipse.core.runtime.Platform.run(Platform.java:747)
        at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:427)
        at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:635)
        at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:731)
        at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:211)
        at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:206)
        at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:238)
        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
        at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
        at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
        at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
        at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
        at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
        at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
        at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
        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:324)
        at org.eclipse.core.launcher.Main.basicRun(Main.java:183)
        at org.eclipse.core.launcher.Main.run(Main.java:644)
        at org.eclipse.core.launcher.Main.main(Main.java:628)

!ENTRY org.eclipse.core.runtime 4 2 Sep 16, 2004 14:16:59.179
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.runtime".
!STACK 0
java.lang.NullPointerException
        at com.genuitec.eclipse.struts.editor.modeler.core.StrutsEditor.getAdapter(Unknown Source)
        at com.genuitec.eclipse.struts.editor.multipage.StrutsConfigEditor.getAdapter(Unknown Source)
        at org.eclipse.gef.ui.actions.ZoomComboContributionItem$1.partActivated(ZoomComboContributionItem.java:74)
        at org.eclipse.ui.internal.PartListenerList$1.run(PartListenerList.java:49)
        at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
        at org.eclipse.core.runtime.Platform.run(Platform.java:747)
        at org.eclipse.ui.internal.PartListenerList.firePartActivated(PartListenerList.java:47)
        at org.eclipse.ui.internal.WorkbenchPage.firePartActivated(WorkbenchPage.java:1371)
        at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:2695)
        at org.eclipse.ui.internal.WorkbenchPage.activate(WorkbenchPage.java:457)
        at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2215)
        at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2134)
        at org.eclipse.ui.internal.WorkbenchPage.access$6(WorkbenchPage.java:2126)
        at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2113)
        at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
        at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2108)
        at org.eclipse.ui.ide.IDE.openEditor(IDE.java:299)
        at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:137)
        at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:110)
        at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open(OpenActionUtil.java:49)
        at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:164)
        at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:150)
        at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:212)
        at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:188)
        at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:289)
        at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:490)
        at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:429)
        at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:615)
        at org.eclipse.core.runtime.Platform.run(Platform.java:747)
        at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:427)
        at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:635)
        at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:731)
        at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:211)
        at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:206)
        at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:238)
        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
        at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
        at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
        at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
        at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
        at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
        at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
        at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
        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:324)
        at org.eclipse.core.launcher.Main.basicRun(Main.java:183)
        at org.eclipse.core.launcher.Main.run(Main.java:644)
        at org.eclipse.core.launcher.Main.main(Main.java:628)My set up details are...

Then trying to save the openned document (after minor changes):


!ENTRY org.eclipse.ui 2 0 Sep 16, 2004 14:17:30.709
!MESSAGE Save Failed
!STACK 0
java.lang.NullPointerException
        at com.genuitec.eclipse.struts.editor.modeler.core.StrutsEditor.createMex(Unknown Source)
        at com.genuitec.eclipse.struts.editor.modeler.core.StrutsEditor.doSave(Unknown Source)
        at com.genuitec.eclipse.struts.editor.multipage.StrutsConfigEditor.doSave(Unknown Source)
        at org.eclipse.ui.internal.EditorManager$12.run(EditorManager.java:1160)
        at org.eclipse.ui.internal.EditorManager$10.run(EditorManager.java:1015)
        at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:303)
        at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:253)
        at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:588)
        at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
        at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:585)
        at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:1653)
        at org.eclipse.ui.internal.EditorManager.runProgressMonitorOperation(EditorManager.java:1021)
        at org.eclipse.ui.internal.EditorManager.savePart(EditorManager.java:1165)
        at org.eclipse.ui.internal.WorkbenchPage.savePart(WorkbenchPage.java:2539)
        at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPage.java:2551)
        at org.eclipse.ui.internal.SaveAction.run(SaveAction.java:69)
        at org.eclipse.jface.action.Action.runWithEvent(Action.java:881)
        at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:141)
        at org.eclipse.ui.internal.commands.Command.execute(Command.java:132)
        at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:471)
        at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:889)
        at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:930)
        at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:548)
        at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$2(WorkbenchKeyboard.java:496)
        at org.eclipse.ui.internal.keys.WorkbenchKeyboard$1.handleEvent(WorkbenchKeyboard.java:261)
        at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
        at org.eclipse.swt.widgets.Display.filterEvent(Display.java:740)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:795)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:820)
        at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:805)
        at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1734)
        at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1730)
        at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3067)
        at org.eclipse.swt.widgets.Control.windowProc(Control.java:2970)
        at org.eclipse.swt.widgets.Display.windowProc(Display.java:3338)
        at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
        at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1467)
        at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2429)
        at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
        at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
        at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
        at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
        at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
        at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
        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:324)
        at org.eclipse.core.launcher.Main.basicRun(Main.java:183)
        at org.eclipse.core.launcher.Main.run(Main.java:644)
        at org.eclipse.core.launcher.Main.main(Main.java:628)

Platform: Win2K
Eclipse Build: Version: 3.0.0
Build id: 200406251208

MyEclipse: 3.8.1+QF20040825
Build Id: 200408201200-3.8.1+QF20040825

java version “1.4.2_02”
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_02-b03)
Java HotSpot(TM) Client VM (build 1.4.2_02-b03, mixed mode)

Jonathan

September 16, 2004 at 9:29 am #215336

Riyad Kalla

Member

Jonathan,
Are the files for this project local or on a remote machine? Are they under any kind of source control, if so, what kind? Is your struts-config.xml file valid? Can you validate it?

September 16, 2004 at 9:40 am #215344

JonathanOddy

Member

Are the files for this project local or on a remote machine?
Local

Are they under any kind of source control?
Yes

if so, what kind?
CVS
struts-config.xml held as a text file in UNIX format
.struts-config.mex is a local file (Window format) and is not in CVS

Is your struts-config.xml file valid?
Yes

Can you validate it?
Just did msg box says it’s valid.

September 16, 2004 at 9:53 am #215352

Riyad Kalla

Member

Weird… everything sounds kosher.

Ahhh hey do me a favor, I think I know whats wrong… open your Struts config file, click in the outline view to focus it, then exit Eclipse and reload Eclipse… do you get exceptions galore now? I ran into this bug (its a REAL MEAN bug that manifests itself lots of places) but its hard to reproduce. The Struts developer found it/fixed it right after the last quickfix for 3.8.1 went out, but its in 3.8.2 (due out next week). So if this is the bug you found, it should be fixed in the next release.

September 16, 2004 at 9:55 am #215354

JonathanOddy

Member

Before I try, assuming I get exceptions galore – how do I stop them (i.e. revert to where I was)? At the moment they happen “occasionally” so it’s not such a big issue…

Jonathan

September 16, 2004 at 3:55 pm #215388

Riyad Kalla

Member

I had to close all editors, close my perspective and restart Eclipse, additionally you may need to clean our your config dir, but how about just waiting for 3.8.2 so we can be safe? I don’t want you to loose any work.

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