Re: [eclipselink-users] QueryBasedValueHolder cannot be cast to UnitOfWo

[Andreas König <andreas.koenig@xxxxxxxxxx>]

Thanks for the reply, James.

There wasn't more stack. What I found out by now is that it seems to be 
a mapping problem: I have an embeddable with a ManyToMany-relationship.
If I change it to FetchType.EAGER it all works well...
Strange. Is this a bug?


Best regards,
Andreas


James Sutherland wrote:
> Most of the stack is your app or spring, the EclipseLink part is only at the
> end, but seems to be missing the caused by, is there more to the stack?
>
> Also please describe exactly what you are doing to get this error, ideally
> your code for your commit.
>
> Caused by: javax.persistence.RollbackException:
> java.lang.ClassCastException:
> org.eclipse.persistence.internal.indirection.QueryBasedValueHolder
> cannot be cast to
> org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder
>         at
> org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:102)
>         at
> org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63)
>         at
> org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:456)
>         ... 105 more 
>
>
> Andreas König-2 wrote:
> > Hey Folks!
> >
> > In certain cases I get this error and I don't find out why. Its 
> > definitely reproducable.
> >
> >
> > !!!Could not commit JPA transaction; nested exception is 
> > javax.persistence.RollbackException: java.lang.ClassCastException: 
> > org.eclipse.persistence.internal.indirection.QueryBasedValueHolder 
> > cannot be cast to 
> > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder
> >
> > Situation is the following:
> >
> > What happens is that the object, that i change during a transactional 
> > context is updated in the database. There seem to be another 
> > transaction, which I don't see...
> >
> > Any idea??
> >
> > Thx for Help.
> >
> >
> > Andreas König
> >
> >
> > Stacktrace:
> >
> > 009-03-31 20:04:01,483 WARN [CommonsLoggingOutput] --Erroring: 
> > batchId[17] 
> > message[org.springframework.transaction.TransactionSystemException: 
> > Could not commit JPA transaction; nested exception is 
> > javax.persistence.RollbackException: java.lang.ClassCastException: 
> > org.eclipse.persistence.internal.indirection.QueryBasedValueHolder 
> > cannot be cast to 
> > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder]
> > 2009-03-31 20:06:13,283 WARN [CommonsLoggingOutput] Method execution 
> > failed:
> > org.springframework.transaction.TransactionSystemException: Could not 
> > commit JPA transaction; nested exception is 
> > javax.persistence.RollbackException: java.lang.ClassCastException: 
> > org.eclipse.persistence.internal.indirection.QueryBasedValueHolder 
> > cannot be cast to 
> > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder
> > 	at 
> > org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:465)
> > 	at 
> > ...
> > org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
> > Caused by: javax.persistence.RollbackException: 
> > java.lang.ClassCastException: 
> > org.eclipse.persistence.internal.indirection.QueryBasedValueHolder 
> > cannot be cast to 
> > org.eclipse.persistence.internal.indirection.UnitOfWorkValueHolder
> > 	at 
> > org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:102)
> > 	at 
> > org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63)
> > 	at 
> > org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:456)
> > 	... 105 more
> >
> >
> >
> > --
> > Andreas König
> > Developer
> >
> > andreas.koenig@xxxxxxxxxx
> >
> > www.serie-a.de
>
>
> -----
> ---
> http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland 
> http://www.eclipse.org/eclipselink/
>  EclipseLink ,  http://www.oracle.com/technology/products/ias/toplink/
> TopLink 
> Wiki:  http://wiki.eclipse.org/EclipseLink EclipseLink , 
> http://wiki.oracle.com/page/TopLink TopLink 
> Forums:  http://forums.oracle.com/forums/forum.jspa?forumID=48 TopLink , 
> http://www.nabble.com/EclipseLink-f26430.html EclipseLink 
> Book:  http://en.wikibooks.org/wiki/Java_Persistence Java Persistence 


--
Andreas König
Developer

andreas.koenig@xxxxxxxxxx

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