Hi All...
I have been studying the EJB 2.0 spec and some other material I have found
and I am confused about entity bean relationships in CMP.
It seems clear that I can define a dependant object, such that any eb can
have a reference to a dependant object and that instances of dependant
objects can live in their own database tables. Also, these dependant
objects are removed from the database when the parent object is. This seems
to me to represent an implementation of composition.
However, what if I want to have an entity bean that has a one-to-one or a
one-to-many reference to another entity bean? If I have an Emploiee entity
bean, this bean could have things like Address as a dependant object, but
what if I want to have a reference to an Office object? The Office object
represents where the Emploiee works, but many emploiees would work in that
office and so I don't want the office deleted when the Emploiee is removed.
What if the Emploiee travles between several offices, so that he or she
needs a Collection of Office entity bean objects?
Can EJB 2.0 CMP handle this?
Thanks...
Jim
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