[jboss-user] [JBoss Seam] - When to use @PersistenceContext vrs @In EntityManager (SMPC)

[reind]

I've been experiencing some problems since switching to seam 2 with anonymous wrote : org.hibernate.LazyInitializationException: could not initialize proxy - no Session

Is my understanding correct:

One should use a SMPC in Seam components that are *not* session beans.

@In EntityManager entityManager 

For stateful session beans (that may or may not be seam components) one should use:

@PersistenceContext(type=EXTENDED)
EntityManager entityManager

For stateless session beans (that may or may not be seam components) one should use:

@PersistenceContext
EntityManager entityManager

The problem I'm experiencing is that I have a SFSB using an entityManager annotated with @PersistenceContext(type=EXTENDED). Some operations on entities produce the LazyInitializationException. If I switch to a Conversation Scoped Seam component, and start a long running conversation, then these exceptions go away. 

This class is just meant to be a SFSB (Session Scope) though, not Conversation scoped. Am I wrong in thinking that the PersistenceContext(type=EXTENDED) should stay around as long as the bean is alive, and thus not produce LIEs?

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