Abstract Object Model (was: RE: Straw-man Proposal for our missio n statement

Tony

Reading your email made me think that perhaps we need to develop an abstract
object model of the different "pieces", e.g. role, choreography, message,
service, interaction etc. Then we can carve out the subset that is related
to choreography that also needs to be exchanged with others for
interoperability and serialize it as XML. Wouldn't we then have our
choreography language?

The point is talking about individual abstract concepts such as those you
mention is like showing a few pieces of the jigsaw puzzle withouth seeing
the whole picture. On the other hand, this model ought to reflect multiple
specs to be really useful which perhaps would be too big an task to attempt.

... or is this completely off beam ...

David

-----Original Message-----
From: Fletcher, Tony [mailto:Tony.Fletcher@choreology.com]
Sent: Monday, May 12, 2003 2:40 AM
To: public-ws-chor@w3.org
Subject: RE: Straw-man Proposal for our mission statement



Dear Colleagues,

Just a small nitpick on the nitpick.

I think that it has been pointed out to me (and so I pass this on) that
role and responsibility are not the same, and may need to be separately
addressed in a choreography as one 'entity' may have responsibility for
a role but 'delegate' that role to some other entity (or the other way
around - the official role owner may delegate responsibility for
execution to another 'entity')

Best Regards     Tony
A M Fletcher
 
Cohesions 1.0 (TM)
 
Business transaction management software for application coordination
 
Choreology Ltd., 13 Austin Friars, London EC2N 2JX     UK
Tel: +44 (0) 20 76701787   Fax: +44 (0) 20 7670 1785  Mobile: +44 (0)
7801 948219
tony.fletcher@choreology.com     (Home: amfletcher@iee.org)


-----Original Message-----
From: public-ws-chor-request@w3.org
[mailto:public-ws-chor-request@w3.org] On Behalf Of Patil, Sanjaykumar
Sent: 10 May 2003 00:07
To: Nickolas Kavantzas; Jean-Jacques Dubray
Cc: Daniel_Austin@grainger.com; public-ws-chor@w3.org
Subject: RE: Straw-man Proposal for our mission statement




This is good. 

Some nitpicking:
- Can we say "global view" instead of "common view". There is a
difference, isn't it.
- Aren't role and responsibility the same? Can we instead say  "roles
and their interactions are clearly defined ..."
- The auomatable, machine-readable attributes are important.  But we
need to identify what exactly needs to be machine readable (the
definition of global view?) and what needs to be automatable (the
process of deriving each participants obligations from the global view?)

However this definition gives me a feeling that we are getting there. 

Sanjay Patil
Distinguished Engineer
sanjay.patil@iona.com
-------------------------------------------------------
IONA Technologies
2350 Mission College Blvd. Suite 650
Santa Clara, CA 95054
Tel: (408) 350 9619
Fax: (408) 350 9501
-------------------------------------------------------
Making Software Work Together TM


-----Original Message-----
From: Nickolas Kavantzas [mailto:nickolas.kavantzas@oracle.com]
Sent: Friday, May 09, 2003 2:53 PM
To: Jean-Jacques Dubray
Cc: Daniel_Austin@grainger.com; public-ws-chor@w3.org
Subject: Re: Straw-man Proposal for our mission statement



I think that the concept of Common View is the central concept for our
work.

Here is a mission statement encapsulating this concept:


Our Goal is to define a Common View of Long Lived business process
Interactions, where roles and responsibilities are clearly defined in a
way that is automatable for each participant, machine-readable, and in a
manner whereby each participant's involvement can be validated.


--
Nick


Jean-Jacques Dubray wrote:

> Daniel:
>
> We should be careful in using or not using the word "external". To be 
> this is an arbitrary distinction and the spec could remain neutral 
> with respect to that attribute.
>
> There seem to be an important concept missing: "Long Running 
> Interactions"
>
> There also seem to miss some goals such as: being able to enforce 
> message sequences and detect exceptions, ...
>
> My two centimes (of Euro that is).
>
> JJ-
>
> >>
> >><mission statement group = "ws-chor" type="CSF level 0"> The mission

> >>of the Web Services Choreography Working Group at W3C is
> to
> >>specify the means by    which Web Services may collaborate with
> external
> >>systems, specifically in the composition of multiple services and 
> >>the sequencing of messages among them. </mission statement>
> >>
> >>Regards,
> >>
> >>D-
> >>
> >>*************************************************
> >>Dr. Daniel Austin
> >>Sr. Technical Architect / Architecture Team Lead 
> >>daniel_austin@notes.grainger.com <----- Note change! 847 793 5044
> >>Visit http://www.grainger.com
> >>
> >>"If I get a little money, I buy books. If there is anything left 
> >>over,
> I
> >>buy clothing and food."
> >>-Erasmus
> >>

Received on Tuesday, 13 May 2003 14:53:38 UTC