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RE: Message exchange patterns document

From: Christopher B Ferris <chrisfer@us.ibm.com>
Date: Mon, 22 Jul 2002 22:26:54 -0400
To: "Krishna Sankar" <ksankar@cisco.com>, www-ws-cg@w3.org
Message-ID: <OFF37A2AE3.6793C05C-ON85256BFF.000D2218@rchland.ibm.com>


I think that you will find that the Usage Scenarios doc [1] makes a valiant
attempt
at trying to articulate thes layers.

Cheers,

Christopher Ferris
Architect, Emerging e-business Industry Architecture
email: chrisfer@us.ibm.com
phone: +1 508 234 3624

[1]
http://www.w3.org/2002/ws/arch/2/07/16-ws-arch-scenarios/ws-arch-scenarios.html



                                                                                                                                  
                      "Krishna Sankar"                                                                                            
                      <ksankar@cisco.co        To:       <www-ws-cg@w3.org>                                                       
                      m>                       cc:                                                                                
                      Sent by:                 Subject:  RE: Message exchange patterns document                                   
                      www-ws-cg-request                                                                                           
                      @w3.org                                                                                                     
                                                                                                                                  
                                                                                                                                  
                      07/22/2002 03:58                                                                                            
                      PM                                                                                                          
                                                                                                                                  
                                                                                                                                  




Philippe,

             Exactly. IMHO, the cohesiveness and coherence between the
"layers" when talking about MEPs is what this document should achieve.
SOAP,WSDL, orchastrators et al could be talking about the same MEP or
different MEPs at different layers or (the most common scenario) would
be aggregation of lower layer MEPs at higher layer. In any case, well
defined MEPs at various layers, in a common shared document would help.

cheers

|  -----Original Message-----
|  From: www-ws-cg-request@w3.org
|  [mailto:www-ws-cg-request@w3.org] On Behalf Of Philippe Le Hegaret
|  Sent: Monday, July 22, 2002 12:02 PM
|  To: Hugo Haas
|  Cc: www-ws-cg@w3.org
|  Subject: Re: Message exchange patterns document
|
|
|
|  On Mon, 2002-07-22 at 13:59, Hugo Haas wrote:
|  >
|  > As per my action item, I have started a document about message
|  > exchange patterns whose goals are (from the abstract):
|  >
|  >      * explain how to document a MEP.
|  >      * list the MEPs developed within the Web Services Activity.
|  >      * eliminate discrepancies.
|  >
|  > The document is available at:
|  >
|  >              http://www.w3.org/2002/ws/cg/2/07/meps.html
|  >
|  > Message exchange patterns have a role in SOAP, WSDL, and
|  are likely to
|  > come to play in other places (e.g. conversation, choreography).
|  >
|  > I think that the XML Protocol Working Group and the Web Services
|  > Description Working Group should come in agreement about
|  using a same
|  > concept and way to describe MEPs, and that the Web Services
|  > Architecture Working Group should look into generalizing MEPs.
|
|  After some readings on SOAP, WSDL, and other languages MEPs, I wonder
|  how useful it would be to have a common document for them.
|  SOAP works at
|  the protocol level, WSDL works at the message level, and
|  choreographic
|  languages work at the web service level. You can hardly compare them.
|  MEPs are more horizontal than vertical imho.
|
|  Philippe
|
|
|
|
Received on Monday, 22 July 2002 22:52:17 GMT

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