[jboss-user] [JBoss Seam] - Re: @DataModelSelection and ClassCastException

[wise_guybg]

ClassCastException with two times the same class:
anonymous wrote : javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean; nested exception is: java
  | .lang.ClassCastException: org.hibernate.collection.PersistentBag
  | java.lang.ClassCastException: org.hibernate.collection.PersistentBag

This tells me that you have two different versions of the class that is used. Two imports of hibernate jars, something like that...

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