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mschipperheyn
 Post subject: Entity copy exceptions with NaturalId entities
PostPosted: Thu Jul 04, 2013 2:00 pm 
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Posts: 211
Hi,

I'm noticing issues in a code base where we applied naturalid and naturalid cache to a number of entities.

We're seeing these kinds of exceptions when we try to attach detached copies of these entities to a field with cascade=CascadeType.MERGE. Wondering if others see the same issue?

Code:
java.lang.IllegalStateException: Error occurred while storing entity [Nederland]. An entity copy [nl.project.model.location.Country#8] was already assigned to a different entity [nl.project.model.location.Country#8].
   at org.hibernate.event.internal.EventCache.put(EventCache.java:192)
   at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:285)
   at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:151)
   at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:924)
   at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:906)
   at org.hibernate.engine.spi.CascadingAction$6.cascade(CascadingAction.java:288)
   at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:388)
   at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:331)
   at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:209)
   at org.hibernate.engine.internal.Cascade.cascadeComponent(Cascade.java:309)
   at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220)
   at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:166)
   at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:424)
   at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:213)
   at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:154)
   at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:76)
   at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:914)
   at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:898)
   at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:902)
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