Hi,

I have a remote client using jndi (InitialContext) to grab remote interfaces of EJBs (I am using EJB3.0, so I am not talking about the home/remote difference, but I am grabbing the interface I have annotated as @Remote). If this client picks up an EntityManager with a standard persistence context, how should I put changes back to the server after changing the entity?

Currently I use:

mgr.merge( changedObject );
mgr.persist( changedObject );

I understand that persist works only if the entity is still in managed state according to the container. The two areas of confusion for me are:

1. Does merge do the persist too? Or does it simply bring the entity back into persistent state, and then I need to persist() as above?

2. Are all entity beans that are used from session bean stubs on remote clients pulled out of context? i.e. Do I have to always call merge if I use an entity bean [from a session bean] from a remote client?

Thanks in advance