[Modeling] RE: Comments on interaction diagram modeling doc

[James Odell]

Oooops. Yes.  So you think it is aggregation, not subtyping, then?

-Jim

On 3/19/03 7:13 PM, "Renato Levy" indited:

> 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.
> 7519 Standish Place, ste 200
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> 
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