[jbosstools-issues] [JBoss JIRA] (JBIDE-12861) NPE when clicking on servlet definition in web.xml

[Jaroslav Jankovič (JIRA)]

Jaroslav Jankovič created JBIDE-12861:
-----------------------------------------

             Summary: NPE when clicking on servlet definition in web.xml
                 Key: JBIDE-12861
                 URL: https://issues.jboss.org/browse/JBIDE-12861
             Project: Tools (JBoss Tools)
          Issue Type: Bug
          Components: Webservices
    Affects Versions: 4.0.0.Beta1
            Reporter: Jaroslav Jankovič
            Assignee: Xavier Coulon
             Fix For: 4.0.0.Beta1, 4.0.x


I am facing very weird bug today. In web.xml application servlet is defined:
{code}
<servlet-mapping>
   <servlet-name>javax.ws.rs.core.Application</servlet-name>
   <url-pattern>/hello/*</url-pattern>
</servlet-mapping>
{code}

Then sometimes I am getting NPE when clicking on "<servlet-mapping>" tag:
{code}
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
	at org.eclipse.swt.SWT.error(SWT.java:4361)
	at org.eclipse.swt.SWT.error(SWT.java:4276)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3529)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3182)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	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:353)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Caused by: java.lang.NullPointerException
	at org.jboss.tools.ws.jaxrs.core.jdt.JdtUtils.getElementAt(JdtUtils.java:188)
	at org.jboss.tools.ws.jaxrs.core.jdt.JdtUtils.getElementAt(JdtUtils.java:213)
	at org.jboss.tools.ws.jaxrs.ui.quickfix.JaxrsMarkerResolutionGenerator.getMarkerResolutions(JaxrsMarkerResolutionGenerator.java:39)
	at org.jboss.tools.ws.jaxrs.ui.quickfix.JaxrsMarkerResolutionGenerator.getResolutions(JaxrsMarkerResolutionGenerator.java:19)
	at org.eclipse.ui.internal.ide.registry.MarkerHelpRegistry.getResolutions(MarkerHelpRegistry.java:253)
	at org.jboss.tools.common.quickfix.MarkerAnnotationInfo.getMarkerProposals(MarkerAnnotationInfo.java:62)
	at org.jboss.tools.common.quickfix.MarkerAnnotationInfo.getCompletionProposals(MarkerAnnotationInfo.java:50)
	at org.jboss.tools.common.text.xml.xpl.MarkerProblemAnnotationHoverProcessor$MarkerAnnotationInformationControl.createContent(MarkerProblemAnnotationHoverProcessor.java:220)
	at org.jboss.tools.common.text.xml.xpl.MarkerProblemAnnotationHoverProcessor$MarkerAnnotationInformationControl.setInput(MarkerProblemAnnotationHoverProcessor.java:189)
	at org.eclipse.jface.text.AbstractInformationControlManager.internalShowInformationControl(AbstractInformationControlManager.java:1181)
	at org.eclipse.jface.text.AbstractInformationControlManager.presentInformation(AbstractInformationControlManager.java:1150)
	at org.eclipse.jface.text.AbstractHoverInformationControlManager.presentInformation(AbstractHoverInformationControlManager.java:902)
	at org.eclipse.jface.text.TextViewerHoverManager.doPresentInformation(TextViewerHoverManager.java:243)
	at org.eclipse.jface.text.TextViewerHoverManager$5.run(TextViewerHoverManager.java:233)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
	... 24 more

{code}

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