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RE: Web Service Description and stateful services - (on the 'www-ws@w3.org' list) Debating on a) Stateful Web Service Instances b) Stateful Interaction - OGSI

From: Cutler, Roger (RogerCutler) <RogerCutler@chevrontexaco.com>
Date: Sat, 21 Jun 2003 10:45:07 -0500
Message-ID: <7FCB5A9F010AAE419A79A54B44F3718E01817EAB@bocnte2k3.boc.chevrontexaco.net>
To: "Ugo Corda" <UCorda@SeeBeyond.com>, "Assaf Arkin" <arkin@intalio.com>
cc: www-ws-arch@w3.org

Are you saying that this state stuff is part of the semantics?  That
seems OK, but if from that you then conclude that it is out of scope
(anything not in SOAP/WSDL is out of scope??) -- then I don't like where
we are going.  There is too much left that is, IMO, important.  For
example, would it not be a nice idea, somewhere down the line, to add
the concepts involved with an acknowledgement infrastructure (the more
precise way of looking at what many people mean when they talk about
reliability) into the UML diagram?  As Assaf (I think) points out,
that's a structure that maintains state, at least in one sense.  I still
think that the word "state" is being used in more than one sense.

-----Original Message-----
From: Ugo Corda [mailto:UCorda@SeeBeyond.com] 
Sent: Friday, June 20, 2003 11:20 PM
To: Assaf Arkin
Cc: www-ws-arch@w3.org
Subject: RE: Web Service Description and stateful services - (on the
'www-ws@w3.org' list) Debating on a) Stateful Web Service Instances b)
Stateful Interaction - OGSI



> What do we call the internals? Is it a 'service' but not a 'Web
> service', the 'service behind the service', the 'Web service whose 
> definition is given by more than WSDL/SOAP', or something totally 
> difference?

In my view a Web service includes both the WSDL definition (the
"interface syntax") and its semantics. I would only decide to use a Web
service after knowing its semantics.

The problem is that so far we only have a standardized way of describing
the interface. The current work of the WSD group on RDF/OWL is an
attempt to provide a standardized way to describe the semantics. But
again the concept of Web service should include both the interface and
the semantics behind.

Ugo
Received on Saturday, 21 June 2003 11:45:44 GMT

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