I think this depends upon what sort of methodology you want to use.
If you are using a RUP style process then you want to take your use
cases and as an analysis come up with some candidate classes and
high-level sequence/activity diagrams. At this level you really wouldn't
be concerned about what is an EJB and what isn't. When you move into
design you can do detailed class & sequence diagrams and at that point
make some decisions about EJBs possibly modeling them as UML components.
If you're using another methodology such as XP then you would take these
use cases as stories and start writing functional tests and first iteration
prototypes. The EJBs would basically fall out of your requirements probably
as you go along and you could apply the patterns others mentioned at that
point.
>From: Prashant Gaikwad <[EMAIL PROTECTED]>
>Reply-To: Prashant Gaikwad <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: What must be a class Design Hierarchy..
>Date: Thu, 7 Jun 2001 16:09:34 +0530
>
>Dear all,
> I'm a system analyst and designer worked on Oracle based
>technologies for a while now but recently I've entered in J2EE/oject
>technologies.
>
>Problem is we have analyzed a system and have come up with number of
>business use cases. We have to start the low level design phase now to
>provide an Enterprise Wide solution . We have our EJB architecture model
>ready. Now we have to transform business requirements captured in the use
>cases into class diagrams and followed by other UML diagrams, that will
>make up session beans and the entity beans ultimately.
>Question is :-
>What are the object oriented design techniques generally followed to design
>classes and establish relationships among them. How do I organize my
>session
>bean classes and entity bean classes and using what OO
>method/principles/technique. Basically its a very big system and I want to
>follow standard OO design approach so that OO benefits cam be utilized.
>
>All the OO design experts uer thoughts and suggestions will be greatly
>appreciated.
>
>cheers
>Prashant
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