Re: [soa-rm-ra] Action Model One pager.... revised

[mpoulin@usa.com]

Well, I do not have objections for three types of actions: a general one, a JA "as action between 2 or more actors", i.e. 2 or more people, and service (execution) actions.

This list does not include actions related to communicative interactions between consumer and service as well as within the consumer itself regarding the service invocation (particularly, preparation to the invocation, acceptance of the response from the services and potentially conversational actions with the same service instance). Why we exclude them is not clear to me.

 

I think that including ALL actions started within the consumer that involved service and its actions for the same shared purpose - obtaining RWE - may be collectively named JA. Any exclusions will require explanations. In the UML view, the diagram can show an Action as a general type, JA as generalizing the Actions and, simultaneously containing (composing) consumer's actions, communication actions and service actions grouped by logical service invocation.

 

What I certainly disagree with is the expressions like “interactions to establish the EC”; ES, IMO, does not need any interaction, it is established by the service provider for each service separately and independently from any consumers.

 

- Michael

 

-----Original Message-----
From: Laskey, Ken <klaskey@mitre.org>
To: peter@peterfbrown.com <peter@peterfbrown.com>; soa-rm-ra@lists.oasis-open.org <soa-rm-ra@lists.oasis-open.org>
Sent: Wed, Mar 16, 2011 11:24 am
Subject: RE: [soa-rm-ra] Action Model One pager.... revised

So I believe the pushback -- certainly from me -- is that the "invoking" is the 
joint action and what the provider does to realize the RWE is largely unknown 
and independent of the consumer. 

The unanswered question is whether interactions to establish the EC are also JA.  
I'm sure Rex would say yes.  I don't think this is a significant problem or 
complication because it just emphasizes that most of SOA is dealing in 
community.  This raises the significance of trust and willingness and the fact 
that, especially across ownership boundaries, execution context cannot be taken 
for granted.  Consistent policies and semantic engagement are just as important 
as getting the endpoint right.  I think this is the message of the ecosystem 
view.

I am still left with the question of how JA relates to Action.  Right now, I'm 
leaning toward Action as only being a part of the Action Model and JA being the 
ecosystem interactions.  That leaves the sticky problem of how action is then 
the "application of intent".  I cringe at the idea of bringing back service 
action as what's in the Action Model, but that is a possibility.

So we'd have Action as something general, JA as action between 2 or more actors, 
and a separate (service) action that is what the consumer asks the service to do 
to realize the described RWE.

Still not neat and clean but I think the direction we need to go.

Ken
---------------------------------------------------------------------------
Dr. Kenneth Laskey
MITRE Corporation, M/S H305              phone: 703-983-7934
7515 Colshire Drive                             fax: 703-983-1379
McLean VA 22102-7508
________________________________________
From: Peter F Brown [peter@peterfbrown.com]
Sent: Wednesday, March 16, 2011 12:27 AM
To: soa-rm-ra@lists.oasis-open.org
Subject: [soa-rm-ra] Action Model One pager.... revised

Hi:
As requested, here is an update of the (slightly more than) one-pager covering 
the issues of action. This takes into account the main points raised over the 
last week and – if acceptable – will be used as the basis to reword the relevant 
parts of section 3

Talk tomorrow,
Peter

Peter F Brown
Independent Consultant
[cid:image001.png@01CBE357.B91DD0F0]
Transforming our Relationships with Information Technologies
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Twitter     @pensivepeter<http://twitter.com/#!/@pensivepeter>
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Tel: +1.310.694.2278


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