[jbosstools-issues] [JBoss JIRA] Commented: (JBIDE-7914) org.drools.eclipse.core.DefaultRuleGroup cannot be cast to org.eclipse.emf.ecore.EObject

[Dan Florian (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-7914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570741#comment-12570741 ] 

Dan Florian commented on JBIDE-7914:
------------------------------------

The code where the problem is occurring is in a PropertyTester of ours which is used to determine enablement of some of our actions. It is also used for the execution of actions. The PropertyTester is assuming the selected object is in a project that has one of our project natures. Bad assumption since now we are part of JBT. DesignerUiPropertyTester needs to be fixed to check to make sure the selected object is in a ModelProject.

> org.drools.eclipse.core.DefaultRuleGroup cannot be cast to org.eclipse.emf.ecore.EObject
> ----------------------------------------------------------------------------------------
>
>                 Key: JBIDE-7914
>                 URL: https://issues.jboss.org/browse/JBIDE-7914
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: teiid
>    Affects Versions: 3.2.0.Beta2
>            Reporter: Vitali Yemialyanchyk
>            Assignee: Dan Florian
>         Attachments: screenshot-1.jpg, screenshot-2.jpg
>
>
> 1) Drools workbench -> New drools project -> any proj name -> check all checkboxes -> other by default;
> 2) open Sample.drl;
> 3) in Outline view -> click on nodes -> click on *default* -> get exception:
> org.drools.eclipse.core.DefaultRuleGroup cannot be cast to org.eclipse.emf.ecore.EObject
> java.lang.ClassCastException: org.drools.eclipse.core.DefaultRuleGroup cannot be cast to org.eclipse.emf.ecore.EObject
> 	at com.metamatrix.modeler.internal.ui.actions.workers.ModelObjectWorker.isReadOnly(ModelObjectWorker.java:134)
> 	at com.metamatrix.modeler.internal.ui.actions.workers.CloneWorker.setEnabledState(CloneWorker.java:58)
> 	at com.metamatrix.modeler.internal.ui.actions.workers.ModelObjectWorker.selectionChanged(ModelObjectWorker.java:181)
> 	at com.metamatrix.modeler.internal.ui.actions.DesignerUiPropertyTester.isCloneAllowed(DesignerUiPropertyTester.java:91)
> 	at com.metamatrix.modeler.internal.ui.actions.DesignerUiPropertyTester.test(DesignerUiPropertyTester.java:45)
> 	at org.eclipse.core.internal.expressions.Property.test(Property.java:58)
> 	at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:99)
> 	at org.eclipse.ui.internal.services.EvaluationResultCache.evaluate(EvaluationResultCache.java:74)
> 	at org.eclipse.ui.internal.services.ExpressionAuthority.evaluate(ExpressionAuthority.java:165)
> 	at org.eclipse.ui.internal.services.EvaluationAuthority.refsWithSameExpression(EvaluationAuthority.java:155)
> 	at org.eclipse.ui.internal.services.EvaluationAuthority.sourceChanged(EvaluationAuthority.java:129)
> 	at org.eclipse.ui.internal.services.ExpressionAuthority.sourceChanged(ExpressionAuthority.java:311)
> 	at org.eclipse.ui.internal.services.ExpressionAuthority.sourceChanged(ExpressionAuthority.java:302)
> 	at org.eclipse.ui.AbstractSourceProvider.fireSourceChanged(AbstractSourceProvider.java:80)
> 	at org.eclipse.ui.internal.services.WorkbenchSourceProvider.selectionChanged(WorkbenchSourceProvider.java:177)
> 	at org.eclipse.ui.internal.AbstractSelectionService.fireSelection(AbstractSelectionService.java:156)
> 	at org.eclipse.ui.internal.AbstractSelectionService$1.selectionChanged(AbstractSelectionService.java:62)
> 	at org.eclipse.ui.part.PageBookView$5.run(PageBookView.java:255)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.core.runtime.Platform.run(Platform.java:888)
> 	at org.eclipse.ui.part.PageBookView$SelectionManager.selectionChanged(PageBookView.java:253)
> 	at org.eclipse.ui.part.PageBookView$SelectionProvider.selectionChanged(PageBookView.java:319)
> 	at org.eclipse.ui.part.PageBookView.pageSelectionChanged(PageBookView.java:896)
> 	at org.eclipse.ui.part.PageBookView.access$2(PageBookView.java:891)
> 	at org.eclipse.ui.part.PageBookView$2.selectionChanged(PageBookView.java:163)
> 	at org.eclipse.ui.views.contentoutline.ContentOutlinePage$1.run(ContentOutlinePage.java:99)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.ui.views.contentoutline.ContentOutlinePage.fireSelectionChanged(ContentOutlinePage.java:97)
> 	at org.eclipse.ui.views.contentoutline.ContentOutlinePage.selectionChanged(ContentOutlinePage.java:157)
> 	at org.eclipse.jface.viewers.Viewer$2.run(Viewer.java:162)
> 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> 	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
> 	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:2162)
> 	at org.eclipse.jface.viewers.StructuredViewer.handleSelect(StructuredViewer.java:1190)
> 	at org.eclipse.jface.viewers.StructuredViewer$4.widgetSelected(StructuredViewer.java:1220)
> 	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:1053)
> 	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
> 	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
> 	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
> 	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
> 	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
> 	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
> 	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> 	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
> 	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
> 	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
> 	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:369)
> 	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
> 	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:619)
> 	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
> 	at org.eclipse.equinox.launcher.Main.run(Main.java:1407)

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