Re: JPA and foreignkey to an entity "dico"

[ocrv]

The exact error message is :
javax.persistence.PersistenceException: Detected attempt to establish UserInfo(11331) as the parent of City(9582) but the entity identified by City(9582) has already been persisted without a parent.  A parent cannot be established or changed once an object has been persisted.
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Caused by: org.datanucleus.store.appengine.DatastoreRelationFieldManager$ChildWithoutParentException: Detected attempt to establish UserInfo(11331) as the parent of City(9582) but the entity identified by City(9582) has already been persisted without a parent.  A parent cannot be established or changed once an object has been persisted.

If I use JDO i don't have this exception !!!!!!