Re: [eclipselink-users] OneToOne AND ManyToOne Mapping works with FetchT

[Mitesh Meswani <Mitesh.Meswani@xxxxxxx>]

Hi Zebhed,

Please see inline...


zebhed wrote:
> Ok, I have got one more exception in my log that I have not seen (too many
> exceptions). Maybe it is helpful:
>
> java.lang.NullPointerException
> 	at
> org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getMethodReturnType(PrivilegedAccessHelper.java:300)
> 	at
> org.eclipse.persistence.internal.descriptors.MethodAttributeAccessor.getGetMethodReturnType(MethodAttributeAccessor.java:104)
> 	at
> org.eclipse.persistence.mappings.ForeignReferenceMapping.validateBeforeInitialization(ForeignReferenceMapping.java:1317)
> 	at
> org.eclipse.persistence.descriptors.ClassDescriptor.validateBeforeInitialization(ClassDescriptor.java:4783)
> 	at
> org.eclipse.persistence.descriptors.ClassDescriptor.preInitialize(ClassDescriptor.java:2909)
> 	at
> org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:416)
> 	at
> org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:396)
> 	at
> org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:641)
> 	at
> org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:594)
> 	at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:209)
> 	at
> org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:246)
> 	at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:69)
> 	at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:118)
> 	at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:112)
> 	at
> org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:100)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.PersistenceProcessor.loadPersistenceUnitBundle(PersistenceProcessor.java:573)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.PersistenceProcessor.createTablesInDB(PersistenceProcessor.java:421)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.PersistenceProcessor.processAppBundle(PersistenceProcessor.java:287)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.PersistenceProcessor.processApplication(PersistenceProcessor.java:189)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.DeploymentEventListenerImpl.processApplication(DeploymentEventListenerImpl.java:211)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.DeploymentEventListenerImpl.processEvent(DeploymentEventListenerImpl.java:172)
> 	at
> com.sun.jdo.spi.persistence.support.ejb.ejbc.DeploymentEventListenerImpl.notifyDeploymentEvent(DeploymentEventListenerImpl.java:122)
> 	at
> com.sun.enterprise.deployment.backend.DeploymentEventManager.notifyDeploymentEvent(DeploymentEventManager.java:79)
> 	at
> com.sun.enterprise.deployment.backend.AppDeployer.postDeploy(AppDeployer.java:401)
> 	at
> com.sun.enterprise.deployment.backend.AppDeployer.deploy(AppDeployer.java:260)
> 	at
> com.sun.enterprise.deployment.backend.AppDeployer.doRequestFinish(AppDeployer.java:148)
> 	at
> com.sun.enterprise.deployment.phasing.J2EECPhase.runPhase(J2EECPhase.java:208)
> 	at
> com.sun.enterprise.deployment.phasing.DeploymentPhase.executePhase(DeploymentPhase.java:108)
> 	at
> com.sun.enterprise.deployment.phasing.PEDeploymentService.executePhases(PEDeploymentService.java:966)
> 	at
> com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy(PEDeploymentService.java:283)
> 	at
> com.sun.enterprise.deployment.phasing.PEDeploymentService.deploy(PEDeploymentService.java:835)
> 	at
> com.sun.enterprise.management.deploy.DeployThread.deploy(DeployThread.java:187)
> 	at
> com.sun.enterprise.management.deploy.DeployThread.run(DeployThread.java:225)
>
> -------
>
> And I once again have to correct myself. I do not have to change ALL
> OneToOne and ManyToOne mappings from lazy to eager. In my application there
> are still a few lazy OneToOne and ManyToOne mappings left and the
> application deploys fine. But I cannot identify a pattern that leads to this
> very odd behavior. 
>   
The fact that you are getting these type of exceptions with V2.1 and not 
with V2.0 is very strange. It is possible to run into these kind of 
errors due to class loading issues. Is it possible that you have some of 
your model classes (the ones giving you exceptions) available somewhere 
in the class loader hierarchy?
The document here 
(http://docs.sun.com/app/docs/doc/819-3672/beade?a=view) will help you 
understand class loader hierarchy of GlassFish.

If that does not help, it would be nice to have a reproducible test case 
to effectively debug this issue.

Thanks,
Mitesh
> -------
>
> If I find out more I will post it here. In the meantime, all help is
> welcome.
>