Thrown by the persistence provider when EntityManager.persist(Object) is called and the entity already exists. The current transaction, if one is active, will be marked for rollback.
@author Emmanuel Bernard
Thrown upon an attempt to create an User,Role,Group or Permission that already exists.
@author Rafal Krzewski
@author Henning P. Schmiedehausen
@version $Id: EntityExistsException.java 278822 2005-09-05 19:53:05Z henning $
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