Using createCriteria in booking example

[nusa]

Hi,

I'm unable to use createCriteria in LoginAction booking example.
I change the following code from :

List<User> results = em.createQuery("from User where username=:username and password=:password")
 .setParameter("username", user.getUsername())
 .setParameter("password", user.getPassword())
 .getResultList();

into

 List<User> results = ( (HibernateEntityManager) em ).getSession().createCriteria(User.class)
 .add( Property.forName("this.username").ge( user.getUsername() ) )
 .add( Property.forName("this.password").ge( user.getPassword() ) )
 .list();

but I got the following error :

10:35:08,302 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/seam-booking].[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Error calling action method of component with id _tagId0:_tagId6
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
 at javax.faces.component.UICommand.broadcast(UICommand.java:106)
...
Caused by: javax.faces.el.EvaluationException: /home.xhtml @28,108 action="#{login.login}": javax.ejb.EJBException: null; CausedByException is:
 org.jboss.ejb3.entity.InjectedEntityManager
 at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
 ... 25 more
Caused by: javax.ejb.EJBException: null; CausedByException is:
 org.jboss.ejb3.entity.InjectedEntityManager
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:46)
...

Thanks for any help/suggestions/pointers.

[marius.oancea]

Are you using noejb ?

[nusa]

"marius.oancea" wrote:
Are you using noejb ?

No, the above code is taken from the booking example, not the noejb example.

[gavin.king]

Use Property.forName("username") instead of Property.forName("this.username").

[nusa]

Use Property.forName("username") instead of Property.forName("this.username").

Did that, but still got the same error.

[patrick_ibg]

( (HibernateEntityManager) em ).getSession().

Instead of doing this, try changing

@PersistenceContext
private EntityManager em ;

to

@PersistenceContext
private Session session ;

[nusa]

"patrick_ibg" wrote:
( (HibernateEntityManager) em ).getSession().

Instead of doing this, try changing

@PersistenceContext
private EntityManager em ;

to

@PersistenceContext
private Session session ;

Thanks, the error is gone.
So, is there something wrong with HibernateEntityManager ?

[patrick_ibg]

Nope, the problem is that JBoss wraps the HibernateEntityManager with another implementation.
Alternatively, you can inject

@PersistenceContext
EntityManager em ;

As you did originally. Then to get the session:

 protected Session getSession ()
 {
 return ((org.jboss.ejb3.entity.HibernateSession) em).getHibernateSession() ;
 }

[gavin.king]

The trouble here is that JBoss EJB3 is providing its own interface that does exactly the same thing that a HEM interface does. I've asked Bill to change to use the HEM interface in EJB3.

[patrick_ibg]

Hopefully that makes it in. As it is, I need to keep separate Session and EntityManager fields in my Dao classes, depending on whether I use them w/in JBoss or J2SE.

[tylerdurden001]

Hi Mr. Gavin King,

do you have an answer from Bill for the HEM interface in EJB3?

regards