Hi, I have to implement (using session facade) the persistent logic of many simple entities with CMP. I thought that if I wrote the methods of the session in the way they use only the interfaces (local and localhome) that my entity beans would inherit i do it one time for all. All is ok, except the findByPrimaryKey method (that returns the local interfaces already mentioned) in wich JBoss throws a java.lang.ClassCastException:java.util.ArrayList. The Bean interface extends this generic interface.
The others finders whose return type is collection work properly. I tried to deploy on JBoss 3.0.6 but the problem still remains.