Does container managed entity manager is thread-safe in stateless session bean?

Hello

I have read JEE6 doc and confused with

Manager managed entity containing does (injected by PersistenceContext annotation) is thread-safe in bean of stateless session in env mutiple-thread?

See code below, if there are 2 requests to stateless session bean in 2 concurrent threads, is it using the same Instance of the managing body or not?

@Stateless (name = "HRFacade", mappedName = "HR_FACES_EJB_JPA-HRFacade-HRFacade")

/ public class HRFacadeBean implements HRFacade, HRFacadeLocal {}

@Resource

SessionContext sessionContext;

@PersistenceContext (unitName = "HRFacade")

Private EntityManager em;

public places (places sites) persistLocations {}
EM. Persist (rentals);
return places;
}

public places (places sites) mergeLocations {}
Return em.merge (rentals);
}

{} public void removeLocations (places sites)
location = em.find (Locations.class, locations.getLocationId ());
EM. Remove (rentals);
}

/ * < code > o selection of the places where < code > * /.
@TransactionAttribute (TransactionAttributeType.NOT_SUPPORTED)
public list < location > getLocationsFindAll() {}
Return em.createNamedQuery ("Locations.findAll", Locations.class) .getResultList ();
}

}

Yes its safe. Stateless beans would be useless if it wasn't the case. That's the bit of "controlled container" description, as long as you leave the container do its job, you don't have to worry about such details.

Tags: Java

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