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RE: section 2.2.22 Message Exchange Pattern (MEP)

From: Ugo Corda <UCorda@SeeBeyond.com>
Date: Tue, 8 Jul 2003 10:39:27 -0700
Message-ID: <EDDE2977F3D216428E903370E3EBDDC908122B@MAIL01.stc.com>
To: <jones@research.att.com>, <www-ws-arch@w3.org>

> I personally find the SOAP view of an MEP more coherent.  The problem
> with the WSDL operation perspective is that a single, simple SOAP
> request/response MEP ends up having complementary WSDL operation
> patterns for each endpoint in a peer-to-peer environment -- an out-in
> at the initial sender and an in-out at the ultimateReceiver.  But
> these operations are not formally related to each other in the WSDL
> framework.  The SOAP view provides that coherence.

Yes, but we should not forget that at least two important cases (WS-Chor and BPEL) only rely on WSDL MEPs and do not assume the existence of SOAP. So they have to come up with alternative ways to connect complementary WSDL MEPs (e.g. BPEL seems to use Partner Links for that purpose).

Ugo
Received on Tuesday, 8 July 2003 13:39:34 GMT

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