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Getting ClassCastExceptions

Eclipse plugin
Sean McNeill
2006-06-13
2013-04-17

  • Sean McNeill

    Sean McNeill - 2006-06-13

    I installed the Kalideoscope_1.0.0_05 eclipse plugin, as well as the dependent  emf-sdo-runtime-2.1.1.zip, GEF-runtime-3.1.1.zip and VE-runtime-1.2M2.zip plugins and features.  After running eclipse I was able to switch to the Kalideoscape perspective however, I am getting some  exceptions in some of your view panels. Specifically

    Components Panel: Unable to create view: Plug-in "Kalideoscope" was unable to instantiate class "net.xoetrope.editor.eclipse.project.pages.ComponentPalette"

    StylePalette: Unable to create view: net.xoetrope.xui.XProject

    Properties Panel: Unable to create view: Plug-in "Kalideoscope" was unable to instantiate class "net.xoetrope.editor.eclipse.project.pages.ComponentProperties".

    Any suggestions? If you like, I can post the full stack.  Thanks

     

    • Luan O'Carroll

      Luan O'Carroll - 2006-06-13

      Yes, can you send the stack trace please.

       

    • Sean McNeill

      Sean McNeill - 2006-06-13

      Sure -- No Problem, and as an FYI - I am using Eclipse 3.1.1

      Components Panel Stack:
      java.lang.ClassCastException: net.xoetrope.xui.XProject
          at net.xoetrope.editor.project.pages.XComponentPalette.<init>(XComponentPalette.java:110)
          at net.xoetrope.editor.eclipse.project.pages.ComponentPalette.<init>(ComponentPalette.java:35)
          at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
          at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
          at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
          at java.lang.reflect.Constructor.newInstance(Unknown Source)
          at java.lang.Class.newInstance0(Unknown Source)
          at java.lang.Class.newInstance(Unknown Source)
          at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:162)
          at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142)
          at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129)
          at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48)
          at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:232)
          at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:99)
          at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:267)
          at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:180)
          at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
          at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:283)
          at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:512)
          at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)
          at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
          at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
          at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:391)
          at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1102)
          at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:591)
          at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:528)
          at org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.java:485)
          at org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:230)
          at org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:813)
          at org.eclipse.ui.internal.WorkbenchPage.setPerspective(WorkbenchPage.java:2979)
          at org.eclipse.ui.internal.WorkbenchPage.busySetPerspective(WorkbenchPage.java:909)
          at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:894)
          at org.eclipse.ui.internal.WorkbenchPage$12.run(WorkbenchPage.java:3102)
          at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
          at org.eclipse.ui.internal.WorkbenchPage.setPerspective(WorkbenchPage.java:3100)
          at org.eclipse.ui.internal.PerspectiveBarContributionItem.select(PerspectiveBarContributionItem.java:109)
          at org.eclipse.ui.internal.PerspectiveBarManager$1.widgetSelected(PerspectiveBarManager.java:145)
          at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
          at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
          at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
          at org.eclipse.ui.internal.PerspectiveBarManager.handleChevron(PerspectiveBarManager.java:161)
          at org.eclipse.ui.internal.PerspectiveSwitcher$9.widgetSelected(PerspectiveSwitcher.java:773)
          at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
          at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
          at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
          at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
          at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
          at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
          at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
          at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
          at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
          at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
          at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
          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.core.launcher.Main.invokeFramework(Main.java:334)
          at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
          at org.eclipse.core.launcher.Main.run(Main.java:973)
          at org.eclipse.core.launcher.Main.main(Main.java:948)

      =======================================================
      StylePalette Panel Stack:
      java.lang.ClassCastException: net.xoetrope.xui.XProject
          at net.xoetrope.editor.eclipse.project.pages.StylePalette.createPartControl(StylePalette.java:39)
          at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:305)
          at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:180)
          at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
          at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:283)
          at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:512)
          at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)
          at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
          at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
          at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:391)
          at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1102)
          at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1051)
          at org.eclipse.ui.internal.PartStack.presentationSelectionChanged(PartStack.java:785)
          at org.eclipse.ui.internal.PartStack.access$0(PartStack.java:771)
          at org.eclipse.ui.internal.PartStack$1.selectPart(PartStack.java:119)
          at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:126)
          at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:267)
          at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:276)
          at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder.access$1(DefaultTabFolder.java:1)
          at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder$2.handleEvent(DefaultTabFolder.java:84)
          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:867)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:852)
          at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:660)
          at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3138)
          at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1922)
          at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:288)
          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
          at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
          at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
          at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
          at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
          at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
          at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
          at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
          at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
          at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
          at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
          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.core.launcher.Main.invokeFramework(Main.java:334)
          at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
          at org.eclipse.core.launcher.Main.run(Main.java:973)
          at org.eclipse.core.launcher.Main.main(Main.java:948)

      =======================================================

      Properties Panel Stack:
      java.lang.ClassCastException: net.xoetrope.xui.XProject
          at net.xoetrope.editor.project.pages.XPropertiesEditor.<init>(XPropertiesEditor.java:75)
          at net.xoetrope.editor.eclipse.project.pages.ComponentProperties.<init>(ComponentProperties.java:35)
          at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
          at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
          at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
          at java.lang.reflect.Constructor.newInstance(Unknown Source)
          at java.lang.Class.newInstance0(Unknown Source)
          at java.lang.Class.newInstance(Unknown Source)
          at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:162)
          at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:142)
          at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:129)
          at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:48)
          at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:232)
          at org.eclipse.ui.internal.registry.ViewDescriptor.createView(ViewDescriptor.java:99)
          at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:267)
          at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:180)
          at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)
          at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:283)
          at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:512)
          at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)
          at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)
          at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)
          at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:391)
          at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1102)
          at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1051)
          at org.eclipse.ui.internal.PartStack.presentationSelectionChanged(PartStack.java:785)
          at org.eclipse.ui.internal.PartStack.access$0(PartStack.java:771)
          at org.eclipse.ui.internal.PartStack$1.selectPart(PartStack.java:119)
          at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:126)
          at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:267)
          at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:276)
          at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder.access$1(DefaultTabFolder.java:1)
          at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder$2.handleEvent(DefaultTabFolder.java:84)
          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:867)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:852)
          at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:660)
          at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3138)
          at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1922)
          at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:288)
          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
          at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
          at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
          at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
          at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
          at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
          at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
          at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
          at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
          at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
          at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
          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.core.launcher.Main.invokeFramework(Main.java:334)
          at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
          at org.eclipse.core.launcher.Main.run(Main.java:973)
          at org.eclipse.core.launcher.Main.main(Main.java:948)

       

      • Luan O'Carroll

        Luan O'Carroll - 2006-06-13

        Ok, what's happening here is that the plug-in expects that a project is open when the view are shown (and the NetBeans plug-in automatically does this, but the Eclipse one does not yet). Therefore to work around the problem just open project.xui before opening the perspecive and its views. Or if they are already open just open project.xui and then reopen the perspective's views.

        Let me know if that doesn't help.

         

        • Sean McNeill

          Sean McNeill - 2006-06-13

          Will Do Luan -- thanks for the speedy response

           

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