Re: [wsbpel] Issue 82.2 Proposal

[Charlton Barreto <cbarreto@adobe.com>]

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Hi Satish,

Thank you for your questions and positive comments. Actually, the  
issue of compensation handlers was an open question to the group and  
we appreciate your reminder.

> Should adding of compensationHandler declaration at a scope without  
> explicit opacity be allowed? What role(s) are responsible to define  
> or describe a high level compensation flow?

On the requirement for start activities in the template, start  
activities are important to understanding a process - abstract or  
executable - so as to require that they be exposed at the abstract  
level. Allowing the addition of start activities without explicit  
opacity to, for example, a process which already has a start activity  
is similar to the case where start activities are added to a process  
that didn't initially have any. I agree that the initial message data  
is essential for developers rather than exposed to a business  
analyst. However, any role involved in the initial, abstract design  
of a process should definitely know how a process is initiated at  
least at a high level. In some cases, explicit opaque activities may  
be used as placeholders for start activities (to be defined later).

Finally, one other question has also been raised:

> A potential goal may be to make it possible to determine the end of  
> the process. Take the case, where a fault  handler may be added  
> without explicit opacity. In other than the normal completion case,  
> a process end may not be depicted in the abstract process based on  
> a process template  profile. Is this an acceptable constraint?

It would be good to hear more on your thoughts on this.

Cheers,

-Charlton.

On 20/09/2005, at 20:50, Satish Thatte wrote:

> Short and sweet :-)   A couple of questions:
>
> Why the requirement that all start activities must be present in  
> the template?  Is it about the data that comes in with the initial  
> message being essential?
>
> Why are compensation handlers not allowed to be added to scope  
> declarations?
>
> Satish
>
> ________________________________
>
> From: Charlton Barreto [mailto:cbarreto@adobe.com]
> Sent: Sun 9/11/2005 10:11 PM
> To: ws bpel tc
> Cc: Alex Yiu; Charlton Barreto; Martin Chapman; Monica J Martin;  
> Nickolas Kavantzas; Ron Ten-Hove
> Subject: [wsbpel] Issue 82.2 Proposal
>
>
>
> Attached is a proposal for Issue 82.2 - another abstract profile  
> for a process template - which was developed by the subgroup which  
> expressed interest in this back in June (including Adobe, Oracle  
> and Sun).
>
> Charlton Barreto
> P +1.415.692.5396
> cbarreto@adobe.com
> charlton_b@mac.com
>
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