I am trying to create some eventlisteners for hibernate:
http://www.hibernate.org/hib_docs/reference/en/html/events.html#objectstate-events
but my listeners seem not to fire.

I think, it's just a configuration issue.

I created a simple listener, by overriding the default hibernate update event listener:

public class HibernateUpdateEventListener extends DefaultUpdateEventListener {
 @Override
 public void onSaveOrUpdate(SaveOrUpdateEvent event) {
 System.err.println("update-event listener fired");

 super.onSaveOrUpdate(event);
 }
}

the configuration in my hibernate.cfg.xml file:

 <event type="update">
 <listener class="com.twentyfouract.web.session.util.HibernateUpdateEventListener"/>
 </event>

this file will be located in my.ear/my.jar/hibernate.cfg.xml (in the same direcotry, as the seam.properties file)

• is this the correct place fo the hibernate.cfg.xml file?
  
• do I need some other configuration?
  
• might this intefere with some other configuration files, like persistence.xml, ejb-jar.xml?
  
  When I now call update() the entity, I expect the message to be written to stderr, which does not happen.
  the entity values in the database have changed, but the logmessage does not show up
  
  I also tried the same with DefaultSaveEventListener and calling em.persist() which creates a new entity in the database, but does not show my events logmessage
  
  maybe it's just some configuration problem - I am using SEAM: see also my original post in the SEAM forum:
  http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4118460#4118460