[Modeling] RE: Comments on interaction diagram modeling doc

[Renato Levy]

I understood the other way around as R1 being composed of several roles 
being R2 one of them.

At 06:29 PM 3/19/2003 -0500, you wrote:
>Agreed.
>
>Stephen, quick question.  When you say "It might be necessary to restrict
>this usage, e.g. maybe Role2 should be a sub-role of Role 1", do you mean
>Role2 is a subtype of Role1, or that Role2 consists of several roles where
>Role1 is one of them?
>
>-Jim
>
>
>On 3/19/03 5:09 PM, "Stephen Cranefield" indited:
>
> > Marc-Philippe Huget wrote:
> >> and what about what I propose in the document: the ability to
> >> distinguish an
> >> agent for a specific message, is it too stupid?
> >
> > It would be useful to be able to indicate *for individual messages*
> > what role the sender is considering the recipient to be playing.
> > This would be useful when it would be too cumbersome to use a separate
> > lifeline to represent the recipient playing that role (e.g. when the
> > separate lifeline would only be needed for a single message in the
> > interaction).
> >
> > UML associations allow an association end to be annotated with an
> > "interface specifier" using the format ": ClassifierName".  This
> > "indicates the behavior expected of an associated object by the
> > related instance".  Perhaps we could allow this notation to be used
> > on interaction diagrams as well, i.e. a message could look like
> > this:
> >
> > +-----+      +-----------+
> > |  a  |      |  b: Role1 |
> > +-----+      +-----------+
> >  |        :Role2 |
> >  |-------------->|
> >  |               |
> >
> > It might be necesary to restrict this usage, e.g. maybe Role2 should
> > be a sub-role of Role 1.
> >
> > - Stephen
>
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Renato Levy
Principal Scientist
Intelligent Automation, Inc.
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