Re: [ebxml-bp] Manual Operations in BPSS"

[Duane Nickull <dnickull@adobe.com>]

Martin:

The answer to the second part:

martin.me.roberts@bt.com wrote:

>For us in BT we have used forks and joins with names to indicate states.
>This means that we could exchange with our partner through an out of
>band collaboration, where each of our collaborations is.
>
[DN] Out of band to me means that it is hidden from the path indicated 
within the BP declaration.  If so, then according to the BP instance, 
there is still one or more "legal" next states to advance to.  If there 
is a hidden dependency to complete some unit of work that is not 
explicit in the BP instance, then the BP instance must account for the 
maximum time delay that may be needed to complete that unit of work.

A fork and join is slightly different.  This would add a requirement 
that before a certain state was attained within a BP instance, there are 
two dependencies (previous states) that must be reached.  If the fork 
happens at State "D", one branch must complete work units F and G and 
the other branch must complete work units H and J before the entire 
state can be advanced to reach state "L".  Again - this is a requirement 
for the BP team to make sure that the final BP specification can produce 
instances that can account for this.  BPSS 1.01 did not have this complete.

>  The customer
>could also send us that information.  Depending on who gets there first
>we could replay any transactions or agree to leap to a named state.
>
[DN] THis sounds like an "OR" approach to reconciling different branches 
of a fork rather than an "AND".  The logical operands must be capable of 
being expressed in the BP instance.

Duane Nickull

>
>Very simple but effective.  No replay required but you now have two
>gateways/systems stacks aligned.
>
>What do you think?
>
>Martin Roberts 
>xml designer, 
>BT Exact
>e-mail: martin.me.roberts@bt.com 
>tel: +44(0) 1473 609785  clickdial
>fax: +44(0) 1473 609834
>Intranet Site :http://twiki.btlabs.bt.co.uk/twiki
>
>
>  
>

-- 
Senior Standards Strategist
Adobe Systems, Inc.
http://www.adobe.com