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Re: Occasional NPE
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created by <a href="https://community.jboss.org/people/jskovjyskebankdk">Jesper Skov</a> in <i>JBoss Tools</i> - <a href="https://community.jboss.org/message/807432#807432">View the full discussion</a>
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<div class="jive-rendered-content"><p>More stack traces from 4.1.0.alpha2 nightly B6241 and Kepler M6 below.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This happened while making changes to an XML file with a custom editor. The changes were not yet saved when I got the exception.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>{noformat}</p><p>!ENTRY org.jboss.tools.common 4 0 2013-04-10 14:30:31.348</p><p>!MESSAGE </p><p>!STACK 0</p><p>org.jboss.tools.common.validation.JBTValidationException</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:188)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:209)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:200)</p><p>    at org.jboss.tools.common.validation.java.JavaDirtyRegionProcessor.endProcessing(JavaDirtyRegionProcessor.java:498)</p><p>    at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:697)</p><p>Caused by: java.lang.NullPointerException</p><p>    at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:254)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:183)</p><p>    ... 4 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>!ENTRY org.jboss.tools.common 4 0 2013-04-10 14:30:33.854</p><p>!MESSAGE </p><p>!STACK 0</p><p>org.jboss.tools.common.validation.JBTValidationException</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:188)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:209)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:200)</p><p>    at org.jboss.tools.common.validation.java.JavaDirtyRegionProcessor.endProcessing(JavaDirtyRegionProcessor.java:498)</p><p>    at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:697)</p><p>Caused by: java.lang.NullPointerException</p><p>    at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:254)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:183)</p><p>    ... 4 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>!ENTRY org.jboss.tools.common 4 0 2013-04-10 14:30:55.478</p><p>!MESSAGE </p><p>!STACK 0</p><p>org.jboss.tools.common.validation.JBTValidationException</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:188)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:209)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:200)</p><p>    at org.jboss.tools.common.validation.java.JavaDirtyRegionProcessor.endProcessing(JavaDirtyRegionProcessor.java:498)</p><p>    at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:697)</p><p>Caused by: java.lang.NullPointerException</p><p>    at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:254)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:183)</p><p>    ... 4 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>!ENTRY org.jboss.tools.common 4 0 2013-04-10 14:31:09.531</p><p>!MESSAGE </p><p>!STACK 0</p><p>org.jboss.tools.common.validation.JBTValidationException</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:188)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:209)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:200)</p><p>    at org.jboss.tools.common.validation.java.JavaDirtyRegionProcessor.endProcessing(JavaDirtyRegionProcessor.java:498)</p><p>    at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:697)</p><p>Caused by: java.lang.NullPointerException</p><p>    at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:254)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:183)</p><p>    ... 4 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>!ENTRY org.jboss.tools.common 4 0 2013-04-10 14:31:12.537</p><p>!MESSAGE </p><p>!STACK 0</p><p>org.jboss.tools.common.validation.JBTValidationException</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:188)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:209)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validateString(AsYouTypeValidatorManager.java:200)</p><p>    at org.jboss.tools.common.validation.java.JavaDirtyRegionProcessor.endProcessing(JavaDirtyRegionProcessor.java:498)</p><p>    at org.eclipse.wst.sse.ui.internal.reconcile.DirtyRegionProcessor$BackgroundThread.run(DirtyRegionProcessor.java:697)</p><p>Caused by: java.lang.NullPointerException</p><p>    at org.jboss.tools.jst.web.kb.internal.validation.ELValidator.validate(ELValidator.java:254)</p><p>    at org.jboss.tools.common.validation.AsYouTypeValidatorManager.validate(AsYouTypeValidatorManager.java:183)</p><p>    ... 4 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>!ENTRY org.eclipse.ui 4 4 2013-04-10 14:33:13.372</p><p>!MESSAGE An internal error has occurred.</p><p>!STACK 0</p><p>java.lang.NullPointerException</p><p>    at org.jboss.tools.common.validation.TempMarkerManager$1.runInUIThread(TempMarkerManager.java:271)</p><p>    at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)</p><p>    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)</p><p>    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)</p><p>    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4145)</p><p>    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3762)</p><p>    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1108)</p><p>    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)</p><p>    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:992)</p><p>    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:137)</p><p>    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:600)</p><p>    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)</p><p>    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:555)</p><p>    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)</p><p>    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)</p><p>    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)</p><p>    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)</p><p>    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)</p><p>    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)</p><p>    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)</p><p>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)</p><p>    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)</p><p>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)</p><p>    at java.lang.reflect.Method.invoke(Method.java:601)</p><p>    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)</p><p>    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)</p><p>    at org.eclipse.equinox.launcher.Main.run(Main.java:1450)</p><p>    at org.eclipse.equinox.launcher.Main.main(Main.java:1426)</p><p>{noformat}</p></div>
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