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Note from Camille: in some cases (to be identified), the editing domain can be null. Thus, we can't use it to find the resource set. It may be related to how the UML-RT Model Element extends the UML one (So maybe the bug only occurs in the UML-RT context). So we may have to fix two things: how UML ME handles null domain, and ensure that UML-RT doesn't provide null EditingDomain (As much as possible) The following incident was reported via the automated error reporting: code: 0 plugin: org.eclipse.papyrus.views.properties_1.1.0.201503251607 message: Unexpected Error fingerprint: 75926f8d exception class: java.lang.NullPointerException exception message: - number of children: 0 java.lang.NullPointerException: null at org.eclipse.papyrus.uml.properties.modelelement.UMLModelElement.getContentProvider(UMLModelElement.java:168) at org.eclipse.papyrus.umlrt.properties.modelelement.UMLRTExtModelElement.getContentProvider(UMLRTExtModelElement.java:70) at org.eclipse.papyrus.views.properties.modelelement.DataSource.doGetContentProvider(DataSource.java:197) at org.eclipse.papyrus.views.properties.modelelement.DataSource$1Delegator.createDelegate(DataSource.java:178) at org.eclipse.papyrus.views.properties.modelelement.DataSource$1Delegator.<init>(DataSource.java:157) at org.eclipse.papyrus.views.properties.modelelement.DataSource.getContentProvider(DataSource.java:187) at org.eclipse.papyrus.views.properties.widgets.MultiReference.doBinding(MultiReference.java:68) at org.eclipse.papyrus.views.properties.widgets.AbstractPropertyEditor.checkInput(AbstractPropertyEditor.java:176) at org.eclipse.papyrus.views.properties.widgets.AbstractPropertyEditor.setProperty(AbstractPropertyEditor.java:268) at sun.reflect.GeneratedMethodAccessor73.invoke(null:-1) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.eclipse.xwt.javabean.metadata.properties.BeanProperty.setValue(BeanProperty.java:91) at org.eclipse.xwt.javabean.ResourceLoader.initSegmentAttribute(ResourceLoader.java:1783) at org.eclipse.xwt.javabean.ResourceLoader.initAttribute(ResourceLoader.java:1538) at org.eclipse.xwt.javabean.ResourceLoader.init(ResourceLoader.java:1141) at org.eclipse.xwt.javabean.ResourceLoader.doCreate(ResourceLoader.java:669) at org.eclipse.xwt.javabean.ResourceLoader.doCreate(ResourceLoader.java:705) at org.eclipse.xwt.javabean.ResourceLoader.doCreate(ResourceLoader.java:705) at org.eclipse.xwt.javabean.ResourceLoader.createUIElement(ResourceLoader.java:366) at org.eclipse.xwt.internal.core.Core.createCLRElement(Core.java:630) at org.eclipse.xwt.internal.core.Core.load(Core.java:772) at org.eclipse.xwt.internal.core.Core.load(Core.java:660) at org.eclipse.xwt.XWTLoader.loadWithOptions(XWTLoader.java:1072) at org.eclipse.xwt.XWT.loadWithOptions(XWT.java:623) at org.eclipse.papyrus.views.properties.runtime.DefaultDisplayEngine.createSection(DefaultDisplayEngine.java:308) at org.eclipse.papyrus.views.properties.runtime.DefaultDisplayEngine.createSection(DefaultDisplayEngine.java:214) at org.eclipse.papyrus.views.properties.xwt.XWTSection.display(XWTSection.java:159) at org.eclipse.papyrus.views.properties.xwt.XWTSection.refresh(XWTSection.java:170) at org.eclipse.ui.views.properties.tabbed.TabContents$6.run(TabContents.java:217) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173) at org.eclipse.ui.views.properties.tabbed.TabContents.refresh(TabContents.java:220) at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage$SelectionChangedListener.selectionChanged(TabbedPropertySheetPage.java:222) at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:163) 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:173) at org.eclipse.jface.viewers.Viewer.fireSelectionChanged(Viewer.java:160) at org.eclipse.jface.viewers.StructuredViewer.updateSelection(StructuredViewer.java:2197) at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1228) at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1257) at org.eclipse.jface.util.OpenStrategy.fireSelectionEvent(OpenStrategy.java:242) at org.eclipse.jface.util.OpenStrategy.access$4(OpenStrategy.java:236) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:408) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4200) 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.ui.internal.views.properties.tabbed.view.TabbedPropertyList.select(TabbedPropertyList.java:864) at org.eclipse.ui.internal.views.properties.tabbed.view.TabbedPropertyViewer.setSelectionToWidget(TabbedPropertyViewer.java:122) at org.eclipse.jface.viewers.StructuredViewer.setSelectionToWidget(StructuredViewer.java:1775) at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1731) at org.eclipse.jface.viewers.Viewer.setSelection(Viewer.java:388) at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage.setInput(TabbedPropertySheetPage.java:748) at org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage.selectionChanged(TabbedPropertySheetPage.java:556) at org.eclipse.ui.views.properties.PropertySheet.selectionChanged(PropertySheet.java:335) at org.eclipse.ui.internal.e4.compatibility.SelectionService.notifyListeners(SelectionService.java:237) at org.eclipse.ui.internal.e4.compatibility.SelectionService.handlePostSelectionChanged(SelectionService.java:122) at org.eclipse.ui.internal.e4.compatibility.SelectionService.access$1(SelectionService.java:112) at org.eclipse.ui.internal.e4.compatibility.SelectionService$3.selectionChanged(SelectionService.java:80) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$4.run(SelectionAggregator.java:166) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.notifyPostListeners(SelectionAggregator.java:163) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator.access$8(SelectionAggregator.java:160) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$8$1.run(SelectionAggregator.java:272) at org.eclipse.e4.core.contexts.RunAndTrack.runExternalCode(RunAndTrack.java:56) at org.eclipse.e4.ui.internal.workbench.SelectionAggregator$8.changed(SelectionAggregator.java:269) at org.eclipse.e4.core.internal.contexts.TrackableComputationExt.update(TrackableComputationExt.java:110) at org.eclipse.e4.core.internal.contexts.EclipseContext.processScheduled(EclipseContext.java:338) at org.eclipse.e4.core.internal.contexts.EclipseContext.set(EclipseContext.java:352) at org.eclipse.e4.ui.internal.workbench.SelectionServiceImpl.setPostSelection(SelectionServiceImpl.java:36) at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart$3.selectionChanged(CompatibilityPart.java:130) at org.eclipse.ui.part.PageBookView$SelectionManager$1.run(PageBookView.java:263) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.part.PageBookView$SelectionManager.selectionChanged(PageBookView.java:260) at org.eclipse.ui.part.PageBookView$SelectionProvider.postSelectionChanged(PageBookView.java:340) at org.eclipse.ui.part.PageBookView.postSelectionChanged(PageBookView.java:949) at org.eclipse.ui.part.PageBookView.access$3(PageBookView.java:944) at org.eclipse.ui.part.PageBookView$3.selectionChanged(PageBookView.java:179) at org.eclipse.jface.viewers.StructuredViewer$3.run(StructuredViewer.java:877) 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:173) at org.eclipse.jface.viewers.StructuredViewer.firePostSelectionChanged(StructuredViewer.java:874) at org.eclipse.jface.viewers.StructuredViewer.handlePostSelect(StructuredViewer.java:1243) at org.eclipse.ui.navigator.CommonViewer.handlePostSelect(CommonViewer.java:455) at org.eclipse.jface.viewers.StructuredViewer$5.widgetSelected(StructuredViewer.java:1269) at org.eclipse.jface.util.OpenStrategy.firePostSelectionEvent(OpenStrategy.java:265) at org.eclipse.jface.util.OpenStrategy.access$5(OpenStrategy.java:259) at org.eclipse.jface.util.OpenStrategy$1$2.run(OpenStrategy.java:440) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3994) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3671) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:648) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:592) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) 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(NativeMethodAccessorImpl.java:-2) 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:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) General Information: reported-by: Charles Rivet anonymous-id: 80c2a7b7-ec00-4efe-952d-98c20916bd85 eclipse-build-id: 4.5.0.I20150203-1300 eclipse-product: org.eclipse.epp.package.modeling.product operating system: MacOSX 10.10.2 (x86_64) - cocoa jre-version: 1.7.0_15-b03 The following plug-ins were present on the execution stack (*): 1. org.eclipse.core.databinding.observable_1.4.1.v20140910-2107 2. org.eclipse.core.databinding_1.4.100.v20141002-1314 3. org.eclipse.core.runtime_3.10.0.v20150112-1422 4. org.eclipse.e4.core.contexts_1.3.100.v20140407-1019 5. org.eclipse.e4.ui.workbench_1.3.0.v20150113-2327 6. org.eclipse.e4.ui.workbench.swt_0.12.100.v20150114-0905 7. org.eclipse.equinox.app_1.3.200.v20130910-1609 8. org.eclipse.equinox.launcher_1.3.0.v20140415-2008 9. org.eclipse.jface_3.11.0.v20150121-1751 10. org.eclipse.papyrus.uml.properties_1.1.0.201503251607 11. org.eclipse.papyrus.umlrt.properties_1.1.0.201502041546 12. org.eclipse.papyrus.umlrt_1.1.0.201502041546 13. org.eclipse.papyrus.views.properties_1.1.0.201503251607 14. org.eclipse.swt_3.104.0.v20150203-2243 15. org.eclipse.ui_3.107.0.v20150107-0903 16. org.eclipse.ui.ide.application_1.0.600.v20150120-1542 17. org.eclipse.ui.ide_3.10.100.v20150126-1117 18. org.eclipse.ui.navigator_3.5.500.v20150126-1500 19. org.eclipse.ui.views_3.7.100.v20141003-0011 20. org.eclipse.ui.views.properties.tabbed_3.6.0.v20140519-0906 21. org.eclipse.xwt_1.1.0.M1-20141215-1730 Please note that: * Messages, stacktraces, and nested status objects may be shortened. * Bug fields like status, resolution, and whiteboard are sent back to reporters. * The list of present bundles and their respective versions was calculated by package naming heuristics. This may or may not reflect reality. Other Resources: * Report: https://dev.eclipse.org/recommenders/committers/confess/#/problems/551464c0e4b0b71121dae471 * Manual: https://dev.eclipse.org/recommenders/community/confess/#/guide Thank you for your assistance. Your friendly error-reports-inbox.
I think that I have fixed this error in my last bug-fix: https://bugs.eclipse.org/bugs/show_bug.cgi?id=454035. However, I also think that I would be better to have a null control before using the domain reference in UMLElementModel.
