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. ... ... 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 !!!!!! -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/6ENhDbURZ2UJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
