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Access to org.hibernate.Session: ClassCastException

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sw79

Post subject: Access to org.hibernate.Session: ClassCastException

Posted: Sun Apr 23, 2006 11:04 am

Beginner

Joined: Mon Dec 05, 2005 4:15 am
Posts: 36

I read the section 2.3 of JBoss EJB 3.0 Reference Documentation:

Quote:

You can get access to the current underlying Hibernate Session by typecasting your reference to EntityManager.

@PersistenceContext EntityManager entityManager;
public void someMethod();
{
org.jboss.ejb3.entity.HibernateSession hs = (HibernateSession)entityManager;
org.hibernate.Session session = hs.getHibernateSession();
}

But, if I made a typecast to HibernateSession in my program, I get a ClassCastException, because my EntityManager is an instance of the class org.hibernate.ejb.EntityManagerImpl which cannot be casted to HibernateSession.
I use Hibernate 3.1 and EJB3.0RC5.

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tpalfalvi

Post subject:

Posted: Mon Apr 24, 2006 9:08 am

Newbie

Joined: Tue Jan 03, 2006 7:30 am
Posts: 18
Location: Budapest, Hungary

Try something like

Code:

session = ((HibernateEntityManager) entityManager.getDelegate()).getSession();

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alesj

Post subject:

Posted: Wed Apr 26, 2006 9:35 am

Expert

Joined: Sat Oct 25, 2003 8:49 am
Posts: 490
Location: Vrhnika, Slovenia

Just simply use like this:

Code:

@PersistenceContext Session session;

JBossAS EJB3 container will inject you a Session instance instead of EM instance.

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