| Cannot delete connection when specified field in the property is filled in with content [message #195656] |
Thu, 03 July 2008 13:03  |
Eclipse User |
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Originally posted by: nhaphuong.web.de
This is a multi-part message in MIME format.
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Content-Type: text/plain; charset=ISO-8859-15; format=flowed
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Hi,
I want to develope something like an Entity Relation Model with GMF. My
nodes should represent the tables and the compartment in the nodes the
attributes of the table.
Ok, I have two nodes (table A und table B). Table A references to table
B. It's the concept of primary und foreign key. To decribe this
relationship graphically I draw a connection between the nodes.
In the property view of the relation, the source and target are correctly.
Source is Table A
Target is Table B
Now I also want to reference to the attributes of the table. For better
understanding you can look at the attach.
If the property of FK Reference and PK Reference are filled, I cannot
delete the connection. If these fields are empty I can delete the
connection.
I looked at the error log and the message is an execute error.
I google this error and in the news they say that this error message has
something to do with OCL constraint. But I can't bring my case with the
case in the newsgroup together.
I hope anybody can help me. Thanks.
Regards Phuong
------------------------------------------------
Here the detail log:
org.eclipse.core.commands.ExecutionException: While executing the
operation, an exception occurred
at
org.eclipse.core.commands.operations.DefaultOperationHistory .execute(DefaultOperationHistory.java:519)
at
org.eclipse.gmf.runtime.diagram.ui.parts.DiagramCommandStack .execute(DiagramCommandStack.java:193)
at
org.eclipse.gmf.runtime.diagram.ui.parts.DiagramCommandStack .execute(DiagramCommandStack.java:168)
at
org.eclipse.gmf.runtime.diagram.ui.actions.DiagramAction.exe cute(DiagramAction.java:141)
at
org.eclipse.gmf.runtime.diagram.ui.actions.DiagramAction.doR un(DiagramAction.java:103)
at
org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandl er.run(AbstractActionHandler.java:359)
at
org.eclipse.gmf.runtime.common.ui.action.ActionManager$1.run (ActionManager.java:225)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:67)
at
org.eclipse.gmf.runtime.common.ui.action.ActionManager.run(A ctionManager.java:223)
at
org.eclipse.gmf.runtime.common.ui.action.AbstractActionHandl er.runWithEvent(AbstractActionHandler.java:377)
at
org.eclipse.jface.action.ActionContributionItem.handleWidget Selection(ActionContributionItem.java:546)
at
org.eclipse.jface.action.ActionContributionItem.access$2(Act ionContributionItem.java:490)
at
org.eclipse.jface.action.ActionContributionItem$5.handleEven t(ActionContributionItem.java:402)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:3682)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3293)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2389)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:22 19)
at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:289)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:461)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:106)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:169)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:106)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:76)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:363)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:176)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 508)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:447)
at org.eclipse.equinox.launcher.Main.run(Main.java:1173)
at org.eclipse.equinox.launcher.Main.main(Main.java:1148)
Caused by: java.lang.ClassCastException: java.lang.Boolean cannot be
cast to org.eclipse.emf.ecore.EObject
at
org.eclipse.emf.ecore.util.ECrossReferenceAdapter.handleCros sReference(ECrossReferenceAdapter.java:608)
at
org.eclipse.emf.ecore.util.ECrossReferenceAdapter.selfAdapt( ECrossReferenceAdapter.java:447)
at
org.eclipse.gmf.runtime.emf.core.util.CrossReferenceAdapter. selfAdapt(CrossReferenceAdapter.java:92)
at
org.eclipse.emf.ecore.util.ECrossReferenceAdapter.notifyChan ged(ECrossReferenceAdapter.java:425)
at
org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify (BasicNotifierImpl.java:247)
at
org.eclipse.emf.ecore.util.EObjectEList$Unsettable.unset(EOb jectEList.java:59)
at
org.eclipse.erm.schema.impl.RelationImpl.unsetFK_Reference(R elationImpl.java:369)
at org.eclipse.erm.schema.impl.RelationImpl.eUnset(RelationImpl .java:472)
at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eUnset(BasicEObj ectImpl.java:1143)
at
org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElemen tCommand.tearDownOutgoingReferences(DestroyElementCommand.ja va:191)
at
org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElemen tCommand.doExecuteWithResult(DestroyElementCommand.java:124)
at
org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTr ansactionalCommand.doExecute(AbstractTransactionalCommand.ja va:246)
at
org.eclipse.emf.workspace.AbstractEMFOperation.execute(Abstr actEMFOperation.java:137)
at
org.eclipse.gmf.runtime.common.core.command.CompositeCommand .doExecuteWithResult(CompositeCommand.java:403)
at
org.eclipse.gmf.runtime.common.core.command.AbstractCommand. execute(AbstractCommand.java:134)
at
org.eclipse.emf.workspace.CompositeEMFOperation.doExecute(Co mpositeEMFOperation.java:212)
at
org.eclipse.emf.workspace.AbstractEMFOperation.execute(Abstr actEMFOperation.java:137)
at
org.eclipse.core.commands.operations.DefaultOperationHistory .execute(DefaultOperationHistory.java:511)
... 37 more
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--------------030002020809060109050703--
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| Re: Cannot delete connection when specified field in the property isfilled in with content [message #195756 is a reply to message #195693] |
Fri, 04 July 2008 07:31  |
| Eclipse User |
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Originally posted by: nhaphuong.web.de
Hi Alex,
thanks very much, your advice was brilliant :). My model was not
updated. Now everything works fine.
Regards
> Hello Bonkers,
>
>> Caused by: java.lang.ClassCastException: java.lang.Boolean cannot be
>> cast to org.eclipse.emf.ecore.EObject at
>> org.eclipse.emf.ecore.util.ECrossReferenceAdapter.handleCros sReference(ECrossReferenceAdapter.java:608)
>>
>> at
>> org.eclipse.emf.ecore.util.ECrossReferenceAdapter.selfAdapt( ECrossReferenceAdapter.java:447)
>>
> I'm suggesting you yo pout breakpoint somewhere here to see the reason
> of this class cast exception (particular reference in your domain model)...
>
> The strange thing is: exception was caused by calling
> org.eclipse.erm.schema.impl.RelationImpl.unsetFK_Reference(R elationImpl.java:369).
> AFAIKSee from the trace old value of this feature was instance of
> java.lang.Boolean, in the same time EMF AFAIU is waiting for EObject
> instance here (based on the metainformation of your model..)
>
> -----------------
> Alex Shatalin
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