Problems occurred when invoking code from plug-in: "org.eclipse.ui.views.properties.tabbed"

[former_member413959]

Hi ,

I am getting exception message while trying press the plugs from WD window properties in all WD projects (NWDS).

I work with 7.31 SP07.

Any ideas ?

Thanks, Faniel

The full  message :

java.lang.NullPointerException: while trying to invoke the method com.sap.ide.metamodel.webdynpro.component.controller.Controller.getEventHandlers() of an object loaded from field com.sap.ide.webdynpro.controllereditor.eventhandlers.EventHandlerSubObjectData.mController of an object loaded from local variable 'this'      at com.sap.ide.webdynpro.controllereditor.eventhandlers.EventHandlerSubObjectData.getEventHandlerNames(EventHandlerSubObjectData.java:60)      at com.sap.ide.webdynpro.ui.tabbedproperties.subsections.controller.ControllerPlugsSubSection.populateEventHandlers(ControllerPlugsSubSection.java:998)      at com.sap.ide.webdynpro.ui.tabbedproperties.subsections.controller.ControllerPlugsSubSection.initTreeViewer(ControllerPlugsSubSection.java:242)      at com.sap.ide.webdynpro.ui.tabbedproperties.subsections.controller.ControllerPlugsSubSection.updateData(ControllerPlugsSubSection.java:221)      at com.sap.ide.webdynpro.ui.tabbedproperties.sections.ControllerPlugsSection.initPropertySectionData(ControllerPlugsSection.java:38)      at com.sap.ide.webdynpro.ui.tabbedproperties.sections.AbstractWDPropertySection.setInput(AbstractWDPropertySection.java:73)      at org.eclipse.ui.views.properties.tabbed.TabContents$5.run(TabContents.java:181)      at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)      at org.eclipse.core.runtime.Platform.run(Platform.java:888)      at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)      at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)      at org.eclipse.ui.views.properties.tabbed.TabContents.setInput(TabContents.java:184)      at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage$SelectionChangedListener.selectionChanged(TabbedPropertySheetPage.java:212)      at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162)      at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)      at org.eclipse.core.runtime.Platform.run(Platform.java:888)      at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)      at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)      at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160)      at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2132)      at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1160)      at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1190)      at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:228)      at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:222)      at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:389)      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)      at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:770)      at org.eclipse.ui.internal.views.properties.tabbed.view.TabbedPropertyList.select(TabbedPropertyList.java:664)      at org.eclipse.ui.internal.views.properties.tabbed.view.TabbedPropertyList$2.mouseUp(TabbedPropertyList.java:156)      at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:207)      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)      at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3910)      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3503)      at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)      at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)      at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)      at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)      at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)      at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)      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:368)      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)      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:597)      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)      at org.eclipse.equinox.launcher.Main.run(Main.java:1311)      at org.eclipse.equinox.launcher.Main.main(Main.java:1287)

[Sharathmg]

java.lang.NullPointerException: while trying to invoke the method com.sap.ide.metamodel.webdynpro.component.controller.Controller.getEventHandlers() of an object loaded from field com.sap.ide.webdynpro.controllereditor.eventhandlers.EventHandlerSubObjectData.mController of an object loaded from local variable 'this' .

Try to track the navigation and include try catch in the methods involving navigation to catch the message and the point at which it is raised.

I doubt that the issue is related to eclipse.

To track, just print messages and follow the usual debug process. Also, find the places where  element/variables can be null and perform the check: null != element/variable.

Also, check if the plugs are mapped in the Window-view editor.

Regards,

Sharath