| NullPointerException [message #1053326] |
Fri, 03 May 2013 21:50  |
 fairouz rose
Messages: 2
Registered: April 2013 |
Junior Member |
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Hi,
I'm trying to develop a plugin to calculate the metric fan in (something like the fint plugin), it works fine, but when I try to analyze the JHotDraw project it shows me the following error
first this is the code where the error is catched
public static HashSet<IMethod> getCallersOf(IMethod m) {
CallHierarchy callHierarchy = CallHierarchy.getDefault();
IMember[] members = {m};
MethodWrapper[] methodWrappers = callHierarchy.getCallerRoots(members);
HashSet<IMethod> callers = new HashSet<IMethod>();
for (MethodWrapper mw : methodWrappers) {
MethodWrapper[] mw2 = mw.getCalls(new NullProgressMonitor()); //this is the line that causes the problem
HashSet<IMethod> temp = getIMethods(mw2);
callers.addAll(temp);
}
return callers;
}
i tried several versions of JHotDraw but i get ALWAAAAAAAAAAYS THE SAME ERROR, actually when searching the callers of the method : remve(command) in the class: CH.ifa.draw.contrib CTXCommandMenu.java
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.e4.core.di.InjectionException: java.lang.NullPointerException
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:63)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:231)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:212)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:131)
at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:171)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:831)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:724)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access$7(HandledContributionItem.java:708)
at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem$4.handleEvent(HandledContributionItem.java:647)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1053)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:942)
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(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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.eclipse.jdt.internal.core.search.matching.ClasspathSourceDirectory.directoryTable(ClasspathSourceDirectory.java:44)
at org.eclipse.jdt.internal.core.search.matching.ClasspathSourceDirectory.findClass(ClasspathSourceDirectory.java:84)
at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.findClass(JavaSearchNameEnvironment.java:146)
at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.findType(JavaSearchNameEnvironment.java:185)
at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType(LookupEnvironment.java:145)
at org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getType(PackageBinding.java:141)
at org.eclipse.jdt.internal.compiler.lookup.Scope.findType(Scope.java:1638)
at org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage(Scope.java:2815)
at org.eclipse.jdt.internal.compiler.lookup.Scope.getType(Scope.java:2513)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.getType(MatchLocator.java:899)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.getMethodBinding0(MatchLocator.java:955)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.getMethodBinding(MatchLocator.java:907)
at org.eclipse.jdt.internal.core.search.matching.MethodLocator.matchMethod(MethodLocator.java:327)
at org.eclipse.jdt.internal.core.search.matching.MethodLocator.resolveLevel(MethodLocator.java:664)
at org.eclipse.jdt.internal.core.search.matching.ClassFileMatchLocator.locateMatches(ClassFileMatchLocator.java:209)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.process(MatchLocator.java:1697)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1141)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1182)
at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1299)
at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.locateMatches(JavaSearchParticipant.java:95)
at org.eclipse.jdt.internal.core.search.BasicSearchEngine.findMatches(BasicSearchEngine.java:231)
at org.eclipse.jdt.internal.core.search.BasicSearchEngine.search(BasicSearchEngine.java:515)
at org.eclipse.jdt.core.search.SearchEngine.search(SearchEngine.java:584)
at org.eclipse.jdt.internal.corext.callhierarchy.CallerMethodWrapper.findChildren(CallerMethodWrapper.java:155)
at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.performSearch(MethodWrapper.java:301)
at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.doFindChildren(MethodWrapper.java:232)
at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.getCalls(MethodWrapper.java:84)
at projet.aspectm.plug.handler.ExtractHandler.getCallersOf(ExtractHandler.java:194)
at projet.aspectm.plug.handler.ExtractHandler.printIMethodDetails(ExtractHandler.java:163)
at projet.aspectm.plug.handler.ExtractHandler.printIMethods(ExtractHandler.java:115)
at projet.aspectm.plug.handler.ExtractHandler.printCompilationUnitDetails(ExtractHandler.java:124)
at projet.aspectm.plug.handler.ExtractHandler.printICompilationUnitInfo(ExtractHandler.java:106)
at projet.aspectm.plug.handler.ExtractHandler.printPackageInfos(ExtractHandler.java:93)
at projet.aspectm.plug.handler.ExtractHandler.execute(ExtractHandler.java:65)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:290)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:76)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
... 34 more
[Updated on: Fri, 03 May 2013 21:52] Report message to a moderator |
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