It's possible: http://forum.hibernate.org/viewtopic.php?t=954042&highlight=runtime View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3969535#3969535 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3969535