- From: Walden Mathews <waldenm@optonline.net>
- Date: Thu, 19 Jun 2003 22:34:12 -0400
- To: Mark Baker <distobj@acm.org>, Savas Parastatidis <Savas.Parastatidis@newcastle.ac.uk>
- Cc: www-ws@w3.org, umit.yalcinalp@oracle.com, Jim Webber <jim.webber@arjuna.com>, Steve Graham <sggraham@us.ibm.com>, Krishna Sankar <ksankar@cisco.com>
Mark, Below, are you saying application state and conversation(al) state are the same thing? Walden ----- Original Message ----- From: "Mark Baker" <distobj@acm.org> To: "Savas Parastatidis" <Savas.Parastatidis@newcastle.ac.uk> Cc: <www-ws@w3.org>; <umit.yalcinalp@oracle.com>; "Jim Webber" <jim.webber@arjuna.com>; "Steve Graham" <sggraham@us.ibm.com>; "Krishna Sankar" <ksankar@cisco.com> Sent: Thursday, June 19, 2003 9:09 PM Subject: Re: Debating on the usefulness of supporting a) Stateful Web Service Instances b) Stateful Interaction > > Hi Savas, > > On Thu, Jun 19, 2003 at 09:08:34PM +0100, Savas Parastatidis wrote: > > Mark, > > > > > > b) is less obvious, but most Web services interfaces I've seen are > > > stateful. I believe this is attributable to the simple fact that it > > > takes effort to design stateless interfaces, whereas stateful > > interfaces > > > are the default. > > > > > > > I would argue that SOA says nothing about the statefulness of the > > services exposed through an interface. > > I agree. I was just referring to interfaces I've seen; most of them > (other than the trivial getFoo() ones) are stateful. > > > I agree that most of the Web > > services have to maintain some state behind the scenes in order to be of > > any use but the semantics of SOA do not mandate that (at least that's my > > understanding). > > Erm, well you seem to be talking about a) state there. I'm talking > about b) state, aka "application state" or "conversation state". In > that context, "stateful" is where the interpretation of message > semantics depends upon information not available within the message > itself (sometimes called "shared context"). > > Mark. > -- > Mark Baker. Ottawa, Ontario, CANADA. http://www.markbaker.ca > >
Received on Thursday, 19 June 2003 22:37:45 UTC