RE: [ebxml-cppa-btp] Proposed requirements on CPP/A for BTP

Dear 
Arvola and other colleagues,

 

I 
think the answer to most of your points is    
-------    Yes!

 

BTP 
can be used between just two systems, but is arguably more useful when 
co-ordination (atomic or cohesive) is required between a number of 
systems.

 

Even 
so, I am not sure that multiparty collaboration needs to be explicitly 
supported.  What I think is true is that a BTP enabled system may require 
at least two CPAs and often many more (see the scenarios in the updated 
requirements document).  However, each CPA will be between just two 
systems.

 

Yes, I 
believe that BPSS should have explicit support (though this may turn out to be 
quite simple and straightforward) for beginning and terminating transactions and 
handling atomic or cohesive behaviour.

 

I 
attended the first part of the ebTWG meeting in Barcelona - which why I was 
unable to reply to this mail earlier - and presented on BTP to the business 
process folk there.  Brian Hayes (who leads the BPSS team has agreed to 
draft a new charter to continue work on BPSS (headed to version 3.0), which will 
include consideration of BTP as one of its prime topics.  So the answer to 
your point is yes indeed and we have started down the road - and you are all 
most welcome to join in!

 

Thanks 
for these thoughts.  Prompted by them I have added four diagrams to the 
proposed draft requirements for CPP/A for BTP enabled systems.  These show 
three scenarios or configurations of BTP enabled systems.  If they are 
agreed then what they show is that even in the simplest case a system may 
require two CPPs (and two CPAs), one for its application plus BTP (CONTEXT and 
CONTEXT_REPLY messages in particular) protocol and another for the business 
transaction 'outcome' protocol.  In the general case a system may require a 
whole set of CPPs and CPAs.

 

Best Regards     
Tony

A M Fletcher

Choreology Ltd., 13 Austin Friars, London 
EC2N 2JX     UK

Tel: +44 (0) 20 
76701787         Mobile: +44 (0) 7801 
948219

     
(Home: )

-----Original Message-----
From: Arvola Chan 
[mailto:]
Sent: 15 May 2002 00:04
To: Tony 
Fletcher; ebXML CPP/A BTP List
Subject: RE: [ebxml-cppa-btp] Proposed 
requirements on CPP/A for BTP

Tony:

 

I 
don't remember if multiparty collaboration is already included in the agenda for 
CPP/A 3.0, but it occurs to me that BTP cohesions and atoms may involve any 
number of participants.

 

Does 
the support of BTP in CPP/A 3.0 imply that multiparty collaboration must 
also be supported?

 

Also, 
will it be necessary to extend BPSS to describe the cohesion/atom behavor of 
collaborations? For example, will a multiparty collaboration have to 
identify the minimal subset of participants that must succeed before the 
cohesion can be considered successful? Does the OASIS BTP team have any 
plan to liaise with the ebtwg-bps team?

 

Thanks,

-Arvola 

 

 -----Original Message-----
From: 
Tony Fletcher [mailto:]
Sent: Tuesday, 
May 14, 2002 12:52 PM
To: ebXML CPP/A BTP List
Subject: 
[ebxml-cppa-btp] Proposed requirements on CPP/A for BTP

  

  

Dear Colleagues,

  
 

  
I think this is 
  the first mailing to this list for quite sometime - I hope it will not be the 
  last and that we will be able to have a little discussion ahead of the June 
  F2F and continue afterwards as we work towards a specification of some 
  sort.

  
 

  
Please find 
  attached an updated version of my proposed set of requirements for extensions 
  to CPP/A to include BTP capable systems.  I put it like that, because it 
  is our current contention that there is actually very little to configure in 
  BTP itself.  It should all be driven off the role being played in the 
  particular business process (and ideally even that would imply we are doing 
  BTP or we are not!)

  
 

  
I am travelling 
  over the next few days so I may be a little slow at replying, but I will try 
  to reply to any responses - and I will certainly be reading posts to this list 
  with interest even if there is no need for me to respond.

  
 

  
Best Regards     
  Tony

  
A M Fletcher

  
Choreology Ltd., 13 Austin Friars, London 
  EC2N 2JX     UK

  
Tel: +44 (0) 20 
  76701787         Mobile: +44 (0) 7801 
  948219

  
     
  (Home: )

  
 

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