[jboss-user] [EJB 3.0] - Foreign keys with 0 and not NULL

lafr do-not-reply at jboss.com
Thu Sep 13 19:01:16 EDT 2007


We have a legacy application which is prepared to use NULL values for most datatypes (exception: date and timestamp).
So a foreign key field of type integer is filled with a zero instead of null in the database.
Using Entity Beans now with relations we get this:
Caused by: javax.persistence.PersistenceException: javax.persistence.EntityNotFoundException: Unable to find biz.mbisoftware.fn.ejb.entity.MbiMsgss with id 0
  |         at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:527)
  |         at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:114)
  |         at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:247)
  |         at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:86)
  |         at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:177)
  |         at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1382)
  |         ... 8 more
  | Caused by: javax.persistence.EntityNotFoundException: Unable to find biz.mbisoftware.fn.ejb.entity.MbiMsgss with id 0
  |         at org.hibernate.ejb.Ejb3Configuration$Ejb3EntityNotFoundDelegate.handleEntityNotFound(Ejb3Configuration.java:107)
  |         at org.hibernate.proxy.AbstractLazyInitializer.checkTargetState(AbstractLazyInitializer.java:79)
  |         at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:72)
  |         at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
  |         at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:64)
  |         at org.hibernate.impl.SessionImpl.firePersistOnFlush(SessionImpl.java:644)
  |         at org.hibernate.impl.SessionImpl.persistOnFlush(SessionImpl.java:636)
  |         at org.hibernate.engine.CascadingAction$9.cascade(CascadingAction.java:323)
  |         at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
  |         at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
  |         at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
  |         at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
  |         at org.hibernate.event.def.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:131)
  |         at org.hibernate.event.def.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:122)
  |         at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:65)
  |         at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
  |         at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
  |         at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
  |         at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:515)
  |         ... 13 more
  | 

Any hints how to deal with this?


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