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> -----Original Message-----
> From: Bullard, Claude L (Len) [mailto:email@example.com]
> Sent: Wednesday, January 11, 2006 2:13 PM
> To: Chiusano Joseph; Mark Baker; Michael Champion
> Cc: firstname.lastname@example.org
> Subject: RE: [xml-dev] Will The Real SOA Please Sit Down?
> Thanks Joe.
> Given that pi calculus is a process calculus, is it true that
> no process calculus is particularly relevant and if true,
> why? Is this because the SOA can be considered an enabling
> layer but separate from the process layer?
That is exactly right. We have discussed the notion of POA
(Process-Oriented Architecture) as being separate from SOA, and it's
highly likely that a separate OASIS TC may be initiated at some point in
the future for POA, to extend the work that the SOA-RM TC has done. IMO,
it would be best that this not occur until after the SOA-RM TC has
completed at least one reference architecture (or is at least far enough
along). We'll be tackling reference architecture next, in the very near
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> The ambient calculus may be relevant to SOA systems given a
> requirement for mobile identity in single sign on systems.
> From: Chiusano Joseph [mailto:email@example.com]
> > Is it fair to say that given orchestration/choreography, a
> > of processes using services could be described by a process
> > such as pi calculus?
> Yes - in fact, W3C Choreography Description Language (WS-CDL)
> is based on pi-calculus.
> > Readers of the CG list know the sources for this. Lurkers
> may wish to
> > query answers.com for a short overview of pi calculus and process
> > calculus.
> > I wonder if the SOA Reference Model can be described using a pi
> > calculus notation. Really don't know....
> Answer from the SOA-RM list: Pi-calculus may be an important
> notation, but it is neither used in the RM, nor is it
> particularly relevant to the RM.