Exception on trying to persist more than one object

[jaki]

I get the following exception on trying to persist more than one bean object:

Caused by: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: com.um2.mauction.entity.Enchere.bidder -> com.um2.mauction.entity.Utilisateur
at org.hibernate.engine.CascadingAction$9.noCascade(CascadingAction.java:353)
at org.hibernate.engine.Cascade.cascade(Cascade.java:139)
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)
... 48 more

The objects to be added are related to each other via foreign keys so I'm guessing it's because a dependent object can't find the parent object in the database (which is getting persisted just above in the same function). Anyway to remedy this behaviour?

[jaki]

Anyway to write an object into the db as soon as em.persist is called? I think this will solve the above problem. Kindly help

[jaki]

I added em.flush() just under em.persist() and it's solved the above problem. Hope this helps someone in the future.