[jbosstools-issues] [JBoss JIRA] (JBIDE-18572) NPE while calling a diff between 2 versions of a JS file

[Konstantin Marmalyukov (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-18572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025280#comment-13025280 ] 

Konstantin Marmalyukov commented on JBIDE-18572:
------------------------------------------------

I analyze stacktrace more carefully. Looks like listener "somehow" was not removed. But this error actually happens in dead code, which was already removed from master and 4.2.x. So it will not be reproduced again.

> NPE while calling a diff between 2 versions of a JS file
> --------------------------------------------------------
>
>                 Key: JBIDE-18572
>                 URL: https://issues.jboss.org/browse/JBIDE-18572
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: visual-page-editor-core
>    Affects Versions: 4.2.0.CR1
>            Reporter: Xavier Coulon
>            Assignee: Konstantin Marmalyukov
>            Priority: Critical
>             Fix For: 4.2.2.Final, 4.3.0.Alpha1
>
>
> Not sure if the error is related {{summarry}}, but here's the stacktrace:
> I did compare my current JS file with the first version in my history, which was an empty file, then I called the diff with the next version and I got this error. I kept having this error when comparing the current version with any other version of the file (if that can help to reproduce/identify the problem)
> {code}
> java.lang.NullPointerException
> 	at org.jboss.tools.vpe.preview.editor.VpvEditor.formRequestToServer(VpvEditor.java:572)
> 	at org.jboss.tools.vpe.preview.editor.VpvEditor.access$0(VpvEditor.java:551)
> 	at org.jboss.tools.vpe.preview.editor.VpvEditor$EditorListener.partInputChanged(VpvEditor.java:674)
> 	at org.eclipse.ui.internal.WorkbenchPage$28.run(WorkbenchPage.java:5151)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.ui.internal.WorkbenchPage.firePartInputChanged(WorkbenchPage.java:5148)
> 	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart$4.propertyChanged(CompatibilityPart.java:369)
> 	at org.eclipse.ui.part.WorkbenchPart.firePropertyChange(WorkbenchPart.java:132)
> 	at org.eclipse.compare.internal.CompareEditor.doSetInput(CompareEditor.java:313)
> 	at org.eclipse.compare.internal.CompareEditor.setInput(CompareEditor.java:254)
> 	at org.eclipse.compare.internal.CompareUIPlugin$1.run(CompareUIPlugin.java:546)
> 	at org.eclipse.compare.internal.CompareUIPlugin.syncExec(CompareUIPlugin.java:1413)
> 	at org.eclipse.compare.internal.CompareUIPlugin.internalOpenEditor(CompareUIPlugin.java:567)
> 	at org.eclipse.compare.internal.CompareUIPlugin.openEditorInBackground(CompareUIPlugin.java:537)
> 	at org.eclipse.compare.internal.CompareUIPlugin.openCompareEditor(CompareUIPlugin.java:526)
> 	at org.eclipse.compare.CompareUI.reuseCompareEditor(CompareUI.java:199)
> 	at org.eclipse.compare.CompareUI.reuseCompareEditor(CompareUI.java:180)
> 	at org.eclipse.team.internal.ui.actions.CompareRevisionAction.openInCompare(CompareRevisionAction.java:139)
> 	at org.eclipse.team.internal.ui.actions.CompareRevisionAction.run(CompareRevisionAction.java:102)
> 	at org.eclipse.team.internal.ui.history.LocalHistoryPage$9.open(LocalHistoryPage.java:414)
> 	at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
> 	at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:853)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)
> 	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:178)
> 	at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:850)
> 	at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1142)
> 	at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1249)
> 	at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:278)
> 	at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:272)
> 	at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:313)
> 	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
> 	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4188)
> 	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467)
> 	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490)
> 	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475)
> 	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279)
> 	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4031)
> 	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658)
> 	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
> 	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
> 	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
> 	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
> 	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
> 	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
> 	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
> 	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:484)
> 	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
> 	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
> 	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
> {code}



--
This message was sent by Atlassian JIRA
(v6.3.8#6338)