JPwH Errata: Page 88: entityManager.getDelegate()

djeetee · **Joined:** Wed Aug 29, 2007 9:20 am **Posts:** 3

Page 88 of the Java Persistence with Hibernate book states the following code :

Code:

Session session = (Session) entityManager.getDelegate()

However, this throws a ClassCastException at runtime because the returned object is of type org.hibernate.ejb.EntityManagerImpl

I therefore think the code example should be changed to

Code:

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

or

Code:

HibernateEntityManager hibernateEntityManager = (HibernateEntityManager) entityManager.getDelegate();

christian · **Posted:** Wed Aug 29, 2007 10:20 am

This means you are using a version of the software (or JBoss AS) that is years older than the current version.

djeetee · **Joined:** Wed Aug 29, 2007 9:20 am **Posts:** 3

I'm using the latest versions of
- the JBoss EJB-3.0 Embeddable server (alpha 9)
- Hibernate 3.2.5
- Hibernate Annotations 3.3.0
- Hibernate EntityManager 3.3.1

christian · **Posted:** Wed Aug 29, 2007 5:49 pm

Quote:

the JBoss EJB-3.0 Embeddable server (alpha 9)

This has been superseded by "Embedded JBoss" (JBoss 5.0 based) half a year ago: http://wiki.jboss.org/wiki/Wiki.jsp?page=EmbeddedJBoss

djeetee · **Joined:** Wed Aug 29, 2007 9:20 am **Posts:** 3

Thx for pointing this out.
I was using the JBoss EJB-3.0 Embeddable server (alpha 9) because I followed the link mentioned on page 80 (http://jboss.org/products/ejb3) and on that webpage this is the latest version I could find.