+1 ... and I think the "the information considered to be significant being 'visible' at the higher 'layer'" is the role/state information from the lower layer. David -----Original Message----- From: Fletcher, Tony [mailto:Tony.Fletcher@choreology.com] Sent: Friday, July 18, 2003 4:22 AM To: Cummins, Fred A; Martin Chapman; Steve Ross-Talbot; Champion, Mike Cc: public-ws-chor@w3.org Subject: RE: Grounding Choreographies (the atoms) - WAS Simple Choreography composition suggestion Dear Fred and others, I basically agree with what you say below. As I stated in a previous mail I think that merging different levels of a choreography may not be the best approach - but it will depend on the mechanics of the language we come up with. I would have a preference for a layered or modular approach where you could define the RM protocol as a choreography then just use that as an 'interaction' at the next level with only the information considered to be significant being 'visible' at the higher 'layer' (the message made 'reliable' in this case). Best Regards Tony A M Fletcher Cohesions (TM) Business transaction management software for application coordination www.choreology.com Choreology Ltd., 13 Austin Friars, London EC2N 2JX UK Tel: +44 (0) 20 76701787 Fax: +44 (0) 20 7670 1785 Mobile: +44 (0) 7801 948219 tony.fletcher@choreology.com (Home: amfletcher@iee.org) -----Original Message----- From: public-ws-chor-request@w3.org [mailto:public-ws-chor-request@w3.org] On Behalf Of Cummins, Fred A Sent: 17 July 2003 18:59 To: Martin Chapman; Steve Ross-Talbot; Champion, Mike Cc: public-ws-chor@w3.org Subject: RE: Grounding Choreographies (the atoms) - WAS Simple Choreograph y composition suggestion Martin, While I agree that it should be possible to define a MEP with the choreography langauge, I would not like a reliable messaging choreography to be merged with a purchasing choreography. I want the purchasing choreography to be expressed with the reliable messaging protocol implied, i.e., abstracted out. The MEP will have implications to the design of the business choreography. Consequently, it may be necessary to incorporate a reference so that the assumptions are clear, but I don't see a single choreography incorporating both levels of abstraction in any more complex way. Fred
Received on Friday, 18 July 2003 16:00:54 UTC