EJB 3.0 does not support that, but Hibernate does. Check out @CollectionOfElements in the Hibernate Annotations documentation. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996426#3996426 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3996426