there is CMR field that maintains link to director and that is set in ejbPostCreate(). caller has to send the directorId value to ejbCreate() but it is not used there. CMR fields are set in ejbPostCreate() and thats where the code would be something like
// get initial context
// get director home
directorRemote = directorHome.findByPrimaryKey(directoryId)
now, user can call method on the
EJB to get info about director through business methods defined in movie remote interface