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Re: Specifying constraints among "roles"

From: Assaf Arkin <arkin@intalio.com>
Date: Thu, 01 May 2003 13:08:20 -0700
Message-ID: <3EB17EB4.9090505@intalio.com>
To: Ricky Ho <riho@cisco.com>
CC: public-ws-chor@w3.org

Ricky Ho wrote:

> Assaf,
> Do you think the Choreography model should allow constraints being 
> specified among roles which is independent of the message exchange ?  
> For example in an "auction" scenario, lets say there is a "potential 
> buyer" role and "ultimate buyer" role.  And I want to specify the 
> following constraints regardless of the flow (in fact, I want to 
> validate the flow conform to such constraint) ....  These are my 
> required constraints
> 1) There can be multiple entities binded to the role "potential 
> buyer", but only one entity binded to the role "ultimate buyer".
> 2) The entity binded to "ultimate buyer" must be one of the entities 
> who previously binded to "potential buyer"
> 3) Once the "ultimate buyer" is binded, no further binding of 
> "potential buyer" should happen
> Do you think the choreography model should allow such constraints 
> being specified ?

Definitely. Good suggestion.


> Rgds,
> Ricky
Received on Thursday, 1 May 2003 16:10:54 GMT

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