Hello Martin,

Tuesday, October 26, 2004, 10:09:58 PM, you wrote:

>> I do not have any problem on this, but maybe a tagged value will users
>> let decide if they want to map it in one table or not.
MW> In the IBM Sanfrancisco framework in addition to Entity there was a
MW> class of objects ( I forget the actual name) which could only existed as
MW> part of an Entity. You could follow this strategy. If the associated
MW> component was an Entity it would be in its own table, if "non-entity"
MW> stereotype it would be a composition. This also relates to the Jira
MW> issues http://team.andromda.org:8080/jira/browse/HIB-10 and
MW> http://team.andromda.org:8080/jira/browse/HIB-16

Yeah, these things were named "Dependent"s. I once worked in a project
where they were used - the only disadvantage was that the modelers
frequently asked themselves: "Should I model this as an entity or as a
dependent?". On the other hand, you may call this an advantage because
the modeler makes a concious decision, then.

What do the others think about dependents? I find them nice because
using a separate stereotype, we could also use a different metafacade
and could easily attach OCL constraints to dependents, for example: "a
dependent must not own a collection".

Chad, how would we write this constraint in OCL?

What do the others think: should we "depend" or not? :-)

Cheers...
Matthias

---

Matthias Bohlen

Internet:
   http://www.mbohlen.de/
   [EMAIL PROTECTED]






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