You should read a paragraph in EJB2.x spec.
can you give me a paragraph number please?
10.3.4 explains removing from a relationship. As far as I understood it you just have to entityBean2.remove() and entityBean2 gets removed from the relationship of entityBean1 (suggest there was a relationship between entityBean1 and entityBean2). Is that right?
adding should be done with entityBean1.getEntityBean2s().add(entityBean2); But what do I actually add: the ValueObject or the (Local)Interface?
Add the local interface.
(I confess: I never did CMP/CMR before... just BMP)