[jboss-user] [EJB 3.0] - JPA and Pessimistic locking/TopLink on JBoss

[klejs]

Hi,

I have two questions:

1. Is it possible with the Hibernate JPA implementation to use pessimistic locking? I have a use-case where this is a must. Is it possible to "hint" in a query as with TopLink's JPA implementation:

e = (Employee)em.createQuery("SELECT e FROM Employee e WHERE e.id = :id")
  | .setHint("toplink.pessimistic-lock", "Lock")
  | .setParameter("id", primaryKey)
  | .getSingleResult();

2. Is it possible to use TopLink in JBoss? If it is are there any examples of this or known limitations?

Thanks in advance

/klejs

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