This is an excellent point and I would like to hear some discussion on
this issue. We have not gone to the use of EJB because of this
problem. They don't seem to fit our layered models very well. Is there
a good answer here?
Thanks,
Guillaume Rousse writes:
> In a well separated layer design, applicative layer should be independant of
> persistance layer. So the use of a OODBMS or A RDBMS should not influate
> modeling in the application layer.
> Entity beans are clearly violating this separation rule. But from what i've
> understood so far, session beans were designed to model process rather than
> concept. Moreover, they have no persistance. So how can you use them to model
> real-world entities ?
> As they are powerful open-source RDBMS, and even hybrid DMBS available, this
> question is important for people aiming public research project, rather than
> e-business.
>
> Le jeu, 02 mar 2000, vous avez �crit :
> > You can use Entity Beans with OODB, but it is overhead and does not add
> > value. Session Beans to pure objects is a very nice model. Very clean on the
> > server side, and forces Service Based Architecture, which we think is a good
> > thing.
>
> Cheers
> --
> Guillaume Rousse
>
> Iremia - Universit� de la R�union
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>
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> ARTHUR: What do you mean? An African or European swallow?
>
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