@Stateless
public class LoginSession implements ILoginSession {
@PersistenceContext(unitName="MyHome")
EntityManager em;
....
public Object loginFunc(Class clazz, Object primaryKey) {
// TODO Auto-generated method stub
return em.find(clazz, primaryKey);
}
public Object removeFunc(Serializable entity) {
// TODO Auto-generated method stub
em.remove(entity);
return entity;
}
.....
}
bean codes are like above.
in JSP file
ILoginSession login = ctx.lookup(LoginSession/remote);
Members erase = (Members)login.loginFunc(Members.class,"father");
out.println(erase.toString()); // It works to this lines
login.removeFunc(erase); // but this line thows Exception
EntityManager.remove() fuction throws "java.lang.IllegalArgumentException: Removing a detached instance"
I need your advice..
Best Regards....^_^