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Home » Modeling » EMF » [CDO] Feature Map Commit
[CDO] Feature Map Commit [message #1715725] Wed, 25 November 2015 13:43 Go to next message
Robert Schulk is currently offline Robert SchulkFriend
Messages: 144
Registered: July 2015
Senior Member
Hello,

I am working with EMF FeatureMaps and CDO. I create the EMF classes from an ecore model which is derived from an XSD. This works all good if I build up my FeatureMap and -afterwards- commit it to CDO.

The issue occurs when I want to add list elements after the object was committed to CDO.

    CDOResource resource = transaction.createResource(CDO_TEST_PATH + "/featureMap");
    FT ft = FeatureTestFactory.eINSTANCE.createFT();
    resource.getContents().add(ft);
    ft.getAtest().add(FeatureTestFactory.eINSTANCE.createA()); 
    transaction.commit();
    ft.getAtest().add(FeatureTestFactory.eINSTANCE.createA());  <=============== Exception
    transaction.commit();


This is the exception I get:

java.lang.ClassCastException: org.eclipse.emf.cdo.internal.common.revision.CDOFeatureMapEntryImpl cannot be cast to java.lang.String
	at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl$26.doCopyValue(CDOTypeImpl.java:610)
	at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl$26.doCopyValue(CDOTypeImpl.java:1)
	at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl.copyValue(CDOTypeImpl.java:1021)
	at org.eclipse.emf.cdo.internal.common.revision.CDOListImpl.clone(CDOListImpl.java:68)
	at org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl.<init>(CDORevisionImpl.java:58)
	at org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl.copy(CDORevisionImpl.java:76)
	at org.eclipse.emf.internal.cdo.view.CDOStateMachine$WriteTransition.execute(CDOStateMachine.java:997)
	at org.eclipse.emf.internal.cdo.view.CDOStateMachine$AbstractWriteTransition.execute(CDOStateMachine.java:941)
	at org.eclipse.emf.internal.cdo.view.CDOStateMachine$WriteTransition.execute(CDOStateMachine.java:990)
	at org.eclipse.emf.internal.cdo.view.CDOStateMachine$AbstractWriteTransition.execute(CDOStateMachine.java:1)
	at org.eclipse.net4j.util.fsm.FiniteStateMachine.process(FiniteStateMachine.java:173)
	at org.eclipse.emf.internal.cdo.view.CDOStateMachine.writeWithoutViewLock(CDOStateMachine.java:354)
	at org.eclipse.emf.internal.cdo.view.CDOStateMachine.write(CDOStateMachine.java:340)
	at org.eclipse.emf.internal.cdo.view.CDOStoreImpl.writeRevision(CDOStoreImpl.java:762)
	at org.eclipse.emf.internal.cdo.view.CDOStoreImpl.add(CDOStoreImpl.java:491)
	at org.eclipse.emf.ecore.impl.EStoreEObjectImpl$BasicEStoreFeatureMap.delegateAdd(EStoreEObjectImpl.java:425)
	at org.eclipse.emf.ecore.impl.EStoreEObjectImpl$BasicEStoreFeatureMap.delegateAdd(EStoreEObjectImpl.java:431)
	at org.eclipse.emf.ecore.impl.EStoreEObjectImpl$BasicEStoreFeatureMap.delegateAdd(EStoreEObjectImpl.java:1)
	at org.eclipse.emf.common.util.DelegatingEList.addUnique(DelegatingEList.java:308)
	at org.eclipse.emf.common.notify.impl.DelegatingNotifyingListImpl.doAddUnique(DelegatingNotifyingListImpl.java:317)
	at org.eclipse.emf.common.notify.impl.DelegatingNotifyingListImpl.addUnique(DelegatingNotifyingListImpl.java:301)
	at org.eclipse.emf.ecore.util.DelegatingFeatureMap.addUnique(DelegatingFeatureMap.java:1512)
	at org.eclipse.emf.ecore.util.DelegatingFeatureMap.addUnique(DelegatingFeatureMap.java:1)
	at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:303)
	at org.eclipse.emf.ecore.util.DelegatingFeatureMap.doAdd(DelegatingFeatureMap.java:530)
	at org.eclipse.emf.ecore.util.DelegatingFeatureMap.add(DelegatingFeatureMap.java:1262)
	at org.eclipse.emf.ecore.util.FeatureMapUtil$FeatureEList.add(FeatureMapUtil.java:744)
	at de.this.is.me.onlytesting.CdoFeatureMapTest.testFailureMockup3(CdoFeatureMapTest.java:95)
	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62)
	at org.eclipse.pde.internal.junit.runtime.PlatformUITestHarness$1.run(PlatformUITestHarness.java:47)
	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:4147)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
	at org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
	at org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:47)
	at org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
	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(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:648)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1438)

[Updated on: Wed, 25 November 2015 14:27]

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Re: [CDO] Feature Map Commit [message #1715748 is a reply to message #1715725] Wed, 25 November 2015 16:13 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6682
Registered: July 2009
Senior Member
Hi Robert,

I'm afraid that feature maps are not supported by CDO. Many years back we made several attempts to support them, but it
had a very cross-cutting (bad) impact on the source code to the extent that it was alomst not maintainable anymore. Then
we decided to drop support for feature maps. They're really more an XML-land construct and quite unsuitable for
relational databases.

Sorry, but if you want to continue to use CDO please refactor your model and eliminate the feature maps.

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper



Am 25.11.2015 um 14:43 schrieb Robert Schulk:
> Hello,
>
> I am working with EMF FeatureMaps and CDO. This works all good if I build up my FeatureMap and -afterwards- commit it
> to CDO.
>
> The issue occurs when I want to add list elements after the object was committed to CDO.
>
>
> CDOResource resource = transaction.createResource(CDO_TEST_PATH + "/featureMap");
> FT ft = FeatureTestFactory.eINSTANCE.createFT();
> resource.getContents().add(ft);
> ft.getAtest().add(FeatureTestFactory.eINSTANCE.createA()); transaction.commit();
> ft.getAtest().add(FeatureTestFactory.eINSTANCE.createA()); <=============== Exception
> transaction.commit();
>
>
> This works though if I copy the object and replace it within the CDO Resource:
>
>
> CDOResource resource = transaction.createResource(CDO_TEST_PATH + "/featureMap");
> FT ft = FeatureTestFactory.eINSTANCE.createFT();
> resource.getContents().add(ft);
> ft.getAtest().add(FeatureTestFactory.eINSTANCE.createA()); transaction.commit();
> FT ftCopy = EcoreUtil.copy(ft); resource.getContents().set(resource.getContents().indexOf(ft), ftCopy);
> ftCopy.getAtest().add(FeatureTestFactory.eINSTANCE.createA()); transaction.commit();
>
>
> This is the exception I get:
>
>
> java.lang.ClassCastException: org.eclipse.emf.cdo.internal.common.revision.CDOFeatureMapEntryImpl cannot be cast to
> java.lang.String
> at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl$26.doCopyValue(CDOTypeImpl.java:610)
> at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl$26.doCopyValue(CDOTypeImpl.java:1)
> at org.eclipse.emf.cdo.internal.common.model.CDOTypeImpl.copyValue(CDOTypeImpl.java:1021)
> at org.eclipse.emf.cdo.internal.common.revision.CDOListImpl.clone(CDOListImpl.java:68)
> at org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl.<init>(CDORevisionImpl.java:58)
> at org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl.copy(CDORevisionImpl.java:76)
> at org.eclipse.emf.internal.cdo.view.CDOStateMachine$WriteTransition.execute(CDOStateMachine.java:997)
> at org.eclipse.emf.internal.cdo.view.CDOStateMachine$AbstractWriteTransition.execute(CDOStateMachine.java:941)
> at org.eclipse.emf.internal.cdo.view.CDOStateMachine$WriteTransition.execute(CDOStateMachine.java:990)
> at org.eclipse.emf.internal.cdo.view.CDOStateMachine$AbstractWriteTransition.execute(CDOStateMachine.java:1)
> at org.eclipse.net4j.util.fsm.FiniteStateMachine.process(FiniteStateMachine.java:173)
> at org.eclipse.emf.internal.cdo.view.CDOStateMachine.writeWithoutViewLock(CDOStateMachine.java:354)
> at org.eclipse.emf.internal.cdo.view.CDOStateMachine.write(CDOStateMachine.java:340)
> at org.eclipse.emf.internal.cdo.view.CDOStoreImpl.writeRevision(CDOStoreImpl.java:762)
> at org.eclipse.emf.internal.cdo.view.CDOStoreImpl.add(CDOStoreImpl.java:491)
> at org.eclipse.emf.ecore.impl.EStoreEObjectImpl$BasicEStoreFeatureMap.delegateAdd(EStoreEObjectImpl.java:425)
> at org.eclipse.emf.ecore.impl.EStoreEObjectImpl$BasicEStoreFeatureMap.delegateAdd(EStoreEObjectImpl.java:431)
> at org.eclipse.emf.ecore.impl.EStoreEObjectImpl$BasicEStoreFeatureMap.delegateAdd(EStoreEObjectImpl.java:1)
> at org.eclipse.emf.common.util.DelegatingEList.addUnique(DelegatingEList.java:308)
> at org.eclipse.emf.common.notify.impl.DelegatingNotifyingListImpl.doAddUnique(DelegatingNotifyingListImpl.java:317)
> at org.eclipse.emf.common.notify.impl.DelegatingNotifyingListImpl.addUnique(DelegatingNotifyingListImpl.java:301)
> at org.eclipse.emf.ecore.util.DelegatingFeatureMap.addUnique(DelegatingFeatureMap.java:1512)
> at org.eclipse.emf.ecore.util.DelegatingFeatureMap.addUnique(DelegatingFeatureMap.java:1)
> at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:303)
> at org.eclipse.emf.ecore.util.DelegatingFeatureMap.doAdd(DelegatingFeatureMap.java:530)
> at org.eclipse.emf.ecore.util.DelegatingFeatureMap.add(DelegatingFeatureMap.java:1262)
> at org.eclipse.emf.ecore.util.FeatureMapUtil$FeatureEList.add(FeatureMapUtil.java:744)
> at de.this.is.me.onlytesting.CdoFeatureMapTest.testFailureMockup3(CdoFeatureMapTest.java:95)
> 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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
> at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
> at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
> at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
> at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
> at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62)
> at org.eclipse.pde.internal.junit.runtime.PlatformUITestHarness$1.run(PlatformUITestHarness.java:47)
> 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:4147)
> at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)
> at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
> at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
> at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)
> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)
> at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
> at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
> at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)
> at org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:54)
> at org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:47)
> at org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:48)
> 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(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:648)
> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
> at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
> at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
>

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

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Re: [CDO] Feature Map Commit [message #1715765 is a reply to message #1715748] Wed, 25 November 2015 20:02 Go to previous message
Robert Schulk is currently offline Robert SchulkFriend
Messages: 144
Registered: July 2015
Senior Member
Hi Eike,

I would say partially supported because from my experience they work reliably for new committed objects (and there is even a unit test for this).
I only thought I might be missing something for changing them later on.
Thanks for clarifying!

[Updated on: Wed, 25 November 2015 20:05]

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