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Re: [eclipselink-users] ClassCastException in Workbench in M8
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Oops, I forgot to mention that the changes need to be made to the files in
the "descriptors" directory.
--Polly
amphoras wrote:
>
> I'm just posting this in case anyone runs into the same issue.
>
> I updated to EclipseLink M8 today and found that I could not access my
> class's mappings in the Workbench anymore. Clicking on any class gave me
> a ClassCastException for MWNullTransactionalPolicy.
>
> After some experimenting, I found that the error goes away if I add this
> snippet after the "class-handle" element. The "descriptor-alias" needs to
> match the class name.
>
> <transactional-policy type="ox">
> <descriptor-alias>Address</descriptor-alias>
> <refresh-cache-policy/>
> <caching-policy/>
> <query-manager type="ox"/>
> <locking-policy type="ox"/>
> <primary-key-policy/>
> </transactional-policy>
>
> --Polly
>
> Here was the exception:
>
> java.lang.ClassCastException:
> org.eclipse.persistence.tools.workbench.mappingsmodel.descriptor.MWNullTransactionalPolicy
> at
> org.eclipse.persistence.tools.workbench.mappingsmodel.descriptor.xml.MWOXDescriptor.primaryKeyPolicy(MWOXDescriptor.java:407)
> at
> org.eclipse.persistence.tools.workbench.mappingsplugin.ui.descriptor.xml.EisPrimaryKeysPanel$3.getValueFromSubject(EisPrimaryKeysPanel.java:134)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.PropertyAspectAdapter.buildValue(PropertyAspectAdapter.java:273)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.PropertyAspectAdapter.engageSubject(PropertyAspectAdapter.java:217)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.AspectAdapter.subjectChanged(AspectAdapter.java:130)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.AspectAdapter$1.propertyChange(AspectAdapter.java:108)
> at
> org.eclipse.persistence.tools.workbench.utility.events.DefaultChangeNotifier.propertyChange(DefaultChangeNotifier.java:60)
> at
> org.eclipse.persistence.tools.workbench.utility.events.ChangeSupport.firePropertyChangedInternal(ChangeSupport.java:478)
> at
> org.eclipse.persistence.tools.workbench.utility.events.ChangeSupport.firePropertyChanged(ChangeSupport.java:439)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.ValueModelChangeSupport.firePropertyChanged(ValueModelChangeSupport.java:122)
> at
> org.eclipse.persistence.tools.workbench.utility.AbstractModel.firePropertyChanged(AbstractModel.java:131)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.TransformationPropertyValueModel.valueChanged(TransformationPropertyValueModel.java:92)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.PropertyValueModelWrapper$1.propertyChange(PropertyValueModelWrapper.java:71)
> at
> org.eclipse.persistence.tools.workbench.utility.events.DefaultChangeNotifier.propertyChange(DefaultChangeNotifier.java:60)
> at
> org.eclipse.persistence.tools.workbench.utility.events.ChangeSupport.firePropertyChangedInternal(ChangeSupport.java:478)
> at
> org.eclipse.persistence.tools.workbench.utility.events.ChangeSupport.firePropertyChanged(ChangeSupport.java:439)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.ValueModelChangeSupport.firePropertyChanged(ValueModelChangeSupport.java:122)
> at
> org.eclipse.persistence.tools.workbench.utility.AbstractModel.firePropertyChanged(AbstractModel.java:131)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.SimplePropertyValueModel.setValue(SimplePropertyValueModel.java:67)
> at
> org.eclipse.persistence.tools.workbench.framework.ui.view.AbstractPropertiesPage.setNode(AbstractPropertiesPage.java:157)
> at
> org.eclipse.persistence.tools.workbench.framework.ui.view.TabbedPropertiesPage.setNode(TabbedPropertiesPage.java:226)
> at
> org.eclipse.persistence.tools.workbench.mappingsplugin.ui.common.MappingsApplicationNode.propertiesPage(MappingsApplicationNode.java:52)
> at
> org.eclipse.persistence.tools.workbench.framework.internal.AbstractEditorView.nodeChanged(AbstractEditorView.java:150)
> at
> org.eclipse.persistence.tools.workbench.framework.internal.AbstractEditorView$1.propertyChange(AbstractEditorView.java:84)
> at
> org.eclipse.persistence.tools.workbench.utility.events.DefaultChangeNotifier.propertyChange(DefaultChangeNotifier.java:60)
> at
> org.eclipse.persistence.tools.workbench.utility.events.ChangeSupport.firePropertyChangedInternal(ChangeSupport.java:478)
> at
> org.eclipse.persistence.tools.workbench.utility.events.ChangeSupport.firePropertyChanged(ChangeSupport.java:439)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.ValueModelChangeSupport.firePropertyChanged(ValueModelChangeSupport.java:122)
> at
> org.eclipse.persistence.tools.workbench.utility.AbstractModel.firePropertyChanged(AbstractModel.java:131)
> at
> org.eclipse.persistence.tools.workbench.uitools.app.SimplePropertyValueModel.setValue(SimplePropertyValueModel.java:67)
> at
> org.eclipse.persistence.tools.workbench.framework.internal.WorkspaceView.selectedNodesChanged(WorkspaceView.java:195)
> at
> org.eclipse.persistence.tools.workbench.framework.internal.WorkspaceView$1.valueChanged(WorkspaceView.java:107)
> at
> javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:629)
> at
> javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1078)
> at
> javax.swing.tree.DefaultTreeSelectionModel.setSelectionPaths(DefaultTreeSelectionModel.java:287)
> at
> org.eclipse.persistence.tools.workbench.framework.internal.NavigatorView$SelectionModel.setSelectionPaths(NavigatorView.java:514)
> at
> javax.swing.tree.DefaultTreeSelectionModel.setSelectionPath(DefaultTreeSelectionModel.java:170)
> at javax.swing.JTree.setSelectionPath(JTree.java:1174)
> at
> javax.swing.plaf.basic.BasicTreeUI.selectPathForEvent(BasicTreeUI.java:2296)
> at
> javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelectionImpl(BasicTreeUI.java:3509)
> at
> javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:3484)
> at
> javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3465)
> at
> java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
> at
> java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
> at java.awt.Component.processMouseEvent(Component.java:5514)
> at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
> at java.awt.Component.processEvent(Component.java:5282)
> at java.awt.Container.processEvent(Container.java:1966)
> at java.awt.Component.dispatchEventImpl(Component.java:3984)
> at java.awt.Container.dispatchEventImpl(Container.java:2024)
> at java.awt.Component.dispatchEvent(Component.java:3819)
> at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
> at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3889)
> at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
> at java.awt.Container.dispatchEventImpl(Container.java:2010)
> at java.awt.Window.dispatchEventImpl(Window.java:1791)
> at java.awt.Component.dispatchEvent(Component.java:3819)
> at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
> at
> java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
> at
> java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
> at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
>
>
--
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