We see a problem on JunoM7 with our existing JPA projects (the problem does not occur with Eclipse 3.7.sr2).

When the projects are checked out from Subversion, we get the below exceptions - and a modal error dialog.

I first filed it as an issue against JPA (see here), because there is no mention of JbossTools in the stack trace.

But they pointed a finger at your plugin.

So I tried reproducing the problem in a clean Juno7 installation (no custom plugins). And couldn't.

I then added the JBoss Hibernate plugin, and switched the JPA platform to Hibernate. And got the error again.

So I have to concur with the JPA folks. The problem appears to be triggered by JbossTools Hibernate, somehow.

Hope you can find the cause.

Thanks,

Jesper

!ENTRY org.eclipse.jface 4 0 2012-05-23 08:41:02.641

!MESSAGE java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/eclipse/jpt/jpa/core/JpaAnnotationProvider

!STACK 0

java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/eclipse/jpt/jpa/core/JpaAnnotationProvider

    at org.eclipse.jpt.common.ui.internal.properties.JptProjectPropertiesPage.performOk(JptProjectPropertiesPage.java:258)

    at org.eclipse.jface.preference.PreferenceDialog$13.run(PreferenceDialog.java:965)

    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.preference.PreferenceDialog.okPressed(PreferenceDialog.java:945)

    at org.eclipse.ui.internal.dialogs.FilteredPreferenceDialog.okPressed(FilteredPreferenceDialog.java:448)

    at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(PreferenceDialog.java:233)

    at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)

    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)

    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:4169)

    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)

    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:158)

    at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)

    at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:119)

    at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:76)

    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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)

    at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:229)

    at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:210)

    at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:131)

    at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:171)

    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:276)

    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:494)

    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:545)

    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:366)

    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher.java:313)

    at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:82)

    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)

    at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262)

    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052)

    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)

    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)

    at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1104)

    at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1100)

    at org.eclipse.swt.widgets.Widget.wmSysChar(Widget.java:2448)

    at org.eclipse.swt.widgets.Control.WM_SYSCHAR(Control.java:5179)

    at org.eclipse.swt.widgets.Control.windowProc(Control.java:4604)

    at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5958)

    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4976)

    at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)

    at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2545)

    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3756)

    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1017)

    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:911)

    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)

    at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:582)

    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:537)

    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)

    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)

    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:353)

    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)

    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:629)

    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)

    at org.eclipse.equinox.launcher.Main.run(Main.java:1438)

Caused by: java.lang.NoClassDefFoundError: org/eclipse/jpt/jpa/core/JpaAnnotationProvider

    at java.lang.Class.getDeclaredConstructors0(Native Method)

    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)

    at java.lang.Class.getConstructor0(Unknown Source)

    at java.lang.Class.newInstance0(Unknown Source)

    at java.lang.Class.newInstance(Unknown Source)

    at org.eclipse.jpt.common.core.internal.utility.XPointTools.instantiate(XPointTools.java:46)

    at org.eclipse.jpt.common.core.internal.utility.XPointTools.instantiate(XPointTools.java:38)

    at org.eclipse.jpt.jpa.core.internal.platform.JpaPlatformDescriptionImpl.buildJpaPlatform(JpaPlatformDescriptionImpl.java:99)

    at org.eclipse.jpt.jpa.core.internal.platform.JpaPlatformManagerImpl.buildJpaPlatformImplementation(JpaPlatformManagerImpl.java:236)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.buildJpaProjectConfig(InternalJpaProjectManager.java:627)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.buildJpaProject(InternalJpaProjectManager.java:601)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.addJpaProject(InternalJpaProjectManager.java:582)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.rebuildJpaProject_(InternalJpaProjectManager.java:515)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager$RebuildJpaProjectCommand.execute(InternalJpaProjectManager.java:504)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.waitToExecute(InternalJpaProjectManager.java:926)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.waitToExecute(InternalJpaProjectManager.java:906)

    at org.eclipse.jpt.jpa.core.internal.InternalJpaProjectManager.rebuildJpaProject(InternalJpaProjectManager.java:491)

    at org.eclipse.jpt.jpa.core.internal.ProjectAdapterFactory$JpaProjectReference.rebuild(ProjectAdapterFactory.java:108)

    at org.eclipse.jpt.jpa.ui.internal.properties.JpaProjectPropertiesPage.rebuildProject_(JpaProjectPropertiesPage.java:842)

    at org.eclipse.jpt.jpa.ui.internal.properties.JpaProjectPropertiesPage.rebuildProject(JpaProjectPropertiesPage.java:835)

    at org.eclipse.jpt.common.ui.internal.properties.JptProjectPropertiesPage.performOk_(JptProjectPropertiesPage.java:317)

    at org.eclipse.jpt.common.ui.internal.properties.JptProjectPropertiesPage$OkRunnableWithProgress$OkWorkspaceRunnable.run(JptProjectPropertiesPage.java:300)

    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)

    at org.eclipse.jpt.common.ui.internal.properties.JptProjectPropertiesPage$OkRunnableWithProgress.run(JptProjectPropertiesPage.java:280)

    at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)

Caused by: java.lang.ClassNotFoundException: org.eclipse.jpt.jpa.core.JpaAnnotationProvider

    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)

    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)

    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)

    at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    ... 25 more