| Missing descriptors [message #848951] |
Wed, 18 April 2012 14:39  |
Eclipse User |
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Hi,
I am using Eclipselink 2.1.3 in an rcp application (based on eclipse 3.7.2 indigo). I have a bundle that contains all entities with assigned annotions (@Entity etc.). The same bundle also has two service components, one is the persistence provider service the other is my connection service, that depends on the persistence provider service. Client bundles use my connection service to obtain entities. The bundle and services are configured as lazy loading. The headers
JPA-PersistenceUnits: ch.eugster.events.persistence
Meta-Persistence: META-INF/persistence.xml
are in the manifes.mf. As classloader I set the bundles classloader in the properties.
When I start the application, the first time a database query is requested, the bundle starts, the persistence provider service is injected to my connection service and my connection service instantiates a entity manager factory and returns an entity manager.
Now my problem: the class descriptors of my persistence.xml seem not to be read by eclipselink. I get an exception (see at the end). I don't know what I am doing wrong. I set the logger to ALL and all what I see is, that the connection to the database is done, but no descriptors are deployed (there is no logging for that). Has anybody an idea, what is going wrong?
I really googled a lot but found no solution for that. I am working now two days to solve this problem, but ...
Thanks a lot!
Christian Eugster
P.S. The stacktrace is:
!ENTRY org.eclipse.ui.workbench 4 0 2012-04-18 20:23:31.233
!MESSAGE Unable to create view ID ch.eugster.events.person.view:
Exception Description: Missing descriptor for [class ch.eugster.events.persistence.model.FieldExtension].
Query: ReadAllQuery(referenceClass=FieldExtension )
!STACK 0
Local Exception Stack:
Exception [EclipseLink-6007] (Eclipse Persistence Services - 2.1.3.v20110304-r9073): org.eclipse.persistence.exceptions.QueryException
Exception Description: Missing descriptor for [class ch.eugster.events.persistence.model.FieldExtension].
Query: ReadAllQuery(referenceClass=FieldExtension )
at org.eclipse.persistence.exceptions.QueryException.descriptorIsMissing(QueryException.java:438)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.checkDescriptor(ObjectLevelReadQuery.java:748)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:661)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1036)
at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:380)
at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1122)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2910)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1291)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1273)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1247)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.executeReadQuery(EJBQueryImpl.java:479)
at org.eclipse.persistence.internal.jpa.EJBQueryImpl.getResultList(EJBQueryImpl.java:714)
at ch.eugster.events.persistence.queries.AbstractEntityQuery.select(AbstractEntityQuery.java:144)
at ch.eugster.events.persistence.queries.AbstractEntityQuery.select(AbstractEntityQuery.java:132)
at ch.eugster.events.persistence.queries.FieldExtensionQuery.selectSearchables(FieldExtensionQuery.java:44)
at ch.eugster.events.person.views.LinkSearcher.addExtendedWidgets(LinkSearcher.java:344)
at ch.eugster.events.person.views.LinkSearcher.<init>(LinkSearcher.java:294)
at ch.eugster.events.person.views.PersonView.createPartControl(PersonView.java:123)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:375)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:229)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2245)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1145)
at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3921)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3918)
at org.eclipse.ui.handlers.ShowViewHandler.openView(ShowViewHandler.java:162)
at org.eclipse.ui.handlers.ShowViewHandler.execute(ShowViewHandler.java:76)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
at org.eclipse.ui.menus.CommandContributionItem.handleWidgetSelection(CommandContributionItem.java:829)
at org.eclipse.ui.menus.CommandContributionItem.access$19(CommandContributionItem.java:815)
at org.eclipse.ui.menus.CommandContributionItem$5.handleEvent(CommandContributionItem.java:805)
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:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at ch.eugster.events.core.Application.start(Application.java:20)
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:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
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| Re: Missing descriptors [message #850595 is a reply to message #849850] |
Fri, 20 April 2012 02:50  |
| Eclipse User |
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Hi James,
all classes are listed in persistence.xml and the are in the same bundle as persistence.xml is. Some days before, the whole thing worked without any problems. Then I ported the bundle from 3.6.2 to 3.7.2 and since then I get that error. Any hints? Thank a lot!
Christian
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