W3C home > Mailing lists > Public > www-ws-arch@w3.org > February 2002

RE: Web Service Definition [Was "Some Thoughts ..."]

From: Joseph Hui <jhui@digisle.net>
Date: Mon, 25 Feb 2002 12:16:43 -0800
Message-ID: <C153D39717E5F444B81E7B85018A460B0668581F@ex-sj-5.digisle.com>
To: "Austin, Daniel" <Austin.D@ic.grainger.com>, "Champion, Mike" <Mike.Champion@SoftwareAG-USA.com>, "Cutler, Roger (RogerCutler)" <RogerCutler@ChevronTexaco.com>, "Mark Baker" <distobj@acm.org>, <steve.vinoski@iona.com>
Cc: <www-ws-arch@w3.org>
Daniel,
Yes, please go ahead.
Regards,
Joe Hui
Exodus, a Cable & Wireless service
=============================
> -----Original Message-----
> From: Austin, Daniel [mailto:Austin.D@ic.grainger.com]
> Sent: Monday, February 25, 2002 12:03 PM
> To: Joseph Hui; Champion, Mike; Cutler, Roger (RogerCutler); 
> Mark Baker;
> steve.vinoski@iona.com
> Cc: www-ws-arch@w3.org
> Subject: RE: Web Service Definition [Was "Some Thoughts ..."]
> 
> 
> Hi Joseph,
> 
> 
> 	This is starting to look like a list of 
> requirements...good. Instead
> of focusing on some mythical definition of Web Services over 
> which we can
> all disagree in perpetuity, I'd like to suggest that we start 
> to talk about
> goals, critical success factors, and requirements for Web Services
> Architecture. We need to concentrate on this discussion so as 
> to meet the
> deadlines in our charter. Let's take Joseph's list as a start 
> and continue
> to discuss these things in concrete terms.
> 
> 	With your permission Joseph, I'll add these to the current
> requirements list, with some suitable editing.
> 
> 	We could probably discuss "What is a Web Service?" until the
> electrons come home, but we have real work to do. :) 
> 
> Regards,
> 
> D-
> 
> 
> > -----Original Message-----
> > From: Joseph Hui [mailto:jhui@digisle.net]
> > Sent: Monday, February 25, 2002 1:43 PM
> > To: Champion, Mike; Cutler, Roger (RogerCutler); Mark Baker;
> > steve.vinoski@iona.com
> > Cc: www-ws-arch@w3.org
> > Subject: RE: Web Service Definition [Was "Some Thoughts ..."]
> > 
> > 
> > If only I had a dime, for every "Web Service" definition I came
> > across, ...  Well, how well off could I be?;-)
> > 
> > So, instead of trying to compile a list which shall soon
> > become amiss no matter how exhaustive we can make it now with
> > existing definitions, I'd propose we take a different tack,
> > to define web services by properties, which are more likely
> > to remain invariant with time.  
> > 
> > Here's a stab, incorporating much of the WG discussion so far,
> > plus some external infusion. 
> > 
> >   A web service is a computing entity with the following properties
> >   (which incidentally sound like requirements also).
> > 
> >   WSP01: A web service MUST be web-addressable, by a URI.
> > 
> >   WSP02: A web service MUST provide standards-based programmatic
> >   interface with well defined input/output parameters.
> >   (For the sake of simplicity, RPC returns may be deemed output 
> >   parameters in web services.)
> >   
> >   WSP03: A web service MUST be sufficiently well formulated such
> >   such it can be unambiguously described using WSDL.  
> >   
> >   WSP04: A web service MUST NOT allow the service requester to
> >   take over its control of execution on its host system.
> >   
> >   WSP05: A web service SHOULD be amenable to be a part of the
> >   aggregation, composition, or orchestration of multiple web
> >   services, where it assumes the leading or a subordinate role.
> >   [Is WSP4 as-is adequate in conveying Inter-operability?
> >   If not, then we need a separate WSPx for Inter-op.]
> >   
> >   WSP06: A web service SHOULD make little or no assumption of the
> >   service requester's hardware platform, programming language,
> >   and operations before, during, or after the service rendered.
> >      
> >   WSP07: A web service MAY make certain assumptions of the policy
> >   and/or mechanism of the security and/or transport of its host
> >   system and/or network, mainly for the purpose of optimization.
> >   (However, it MUST only execute on verified assumptions; and
> >   SHOULD adapt upon failed assumptions to strive for high
> >   availability of service.)
> >   
> >   WSP08: A web service MAY advertise itself in as many public
> >   directories as appropriate, such as those operated by the
> >   UDDI consortium.  
> > 
> >   WSP0x: ?
> >     
> > My $.02.
> > 
> > Joe Hui
> > Exodus, a Cable & Wireless service
> > 
> >  
> > 
> > 
> 
> 
Received on Monday, 25 February 2002 15:16:47 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 3 July 2007 12:24:54 GMT