Description Jolene Moffitt 2010-11-17 09:05:01 EST

Create a JPA 2.0 Generic 2.0 project.  
R-Click on project and select properties
Select Project Facets and change JPA from 2.0 to 1.0 
Click on Further configuration required link
Select Generic 1.0 for the platform and click OK
Select Java Persistence - Notice message stating Uncommitted changes...
Select Project Facets again
Click on Apply button for the Properties dialog
Receive the following Error in the Error Log
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.IllegalArgumentException: duplicate listener: SWT(org.eclipse.jpt.ui.internal.properties.JpaProjectPropertiesPage$9@ea553e))
	at org.eclipse.swt.SWT.error(SWT.java:4091)
	at org.eclipse.swt.SWT.error(SWT.java:4006)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:137)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4059)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3678)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.block(ModalContext.java:173)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:388)
	at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
	at org.eclipse.wst.common.project.facet.ui.internal.FacetsPropertyPage.performOk(FacetsPropertyPage.java:257)
	at org.eclipse.wst.common.project.facet.ui.internal.FacetsPropertyPage.performApply(FacetsPropertyPage.java:313)
	at org.eclipse.jface.preference.PreferencePage$2.widgetSelected(PreferencePage.java:281)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	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:4084)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3675)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
	at org.eclipse.jface.window.Window.open(Window.java:801)
	at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction.java:157)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
	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:4084)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3675)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
	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(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:621)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:576)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1409)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1385)
Caused by: java.lang.IllegalArgumentException: duplicate listener: SWT(org.eclipse.jpt.ui.internal.properties.JpaProjectPropertiesPage$9@ea553e)
	at org.eclipse.jpt.utility.internal.ListenerList.add(ListenerList.java:94)
	at org.eclipse.jpt.utility.internal.model.ChangeSupport.addListener(ChangeSupport.java:123)
	at org.eclipse.jpt.utility.internal.model.SingleAspectChangeSupport.addListener(SingleAspectChangeSupport.java:100)
	at org.eclipse.jpt.utility.internal.model.value.AspectAdapter$LocalChangeSupport.addListener(AspectAdapter.java:245)
	at org.eclipse.jpt.utility.internal.model.ChangeSupport.addPropertyChangeListener(ChangeSupport.java:397)
	at org.eclipse.jpt.utility.internal.model.AbstractModel.addPropertyChangeListener(AbstractModel.java:155)
	at org.eclipse.jpt.ui.internal.properties.JpaProjectPropertiesPage.buildConnectionGroup(JpaProjectPropertiesPage.java:626)
	at org.eclipse.jpt.ui.internal.properties.JpaProjectPropertiesPage.createPageContents(JpaProjectPropertiesPage.java:479)
	at org.eclipse.jst.common.project.facet.ui.libprov.LibraryFacetPropertyPage.updateContents(LibraryFacetPropertyPage.java:266)
	at org.eclipse.jst.common.project.facet.ui.libprov.LibraryFacetPropertyPage.access$0(LibraryFacetPropertyPage.java:210)
	at org.eclipse.jst.common.project.facet.ui.libprov.LibraryFacetPropertyPage$2.run(LibraryFacetPropertyPage.java:220)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
	... 45 more