Re: [wsbpel] Issue 49 - Disambiguating <receive>s to <reply> to

["Dieter Roller" <ROL@de.ibm.com>]

Danny,

I'm still having problems understanding the issue. As the specs say,
partnerLink, portType, operation, and correlation set make the receives
unique. As the reply references the same properties, there should be no
problem.

dieter



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|         |           Danny van der    |
|         |           Rijn             |
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  |       To:       wsbpel@lists.oasis-open.org                                                                                                 |
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  |       Subject:  Re: [wsbpel] Issue 49 - Disambiguating <receive>s to <reply> to                                                             |
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i'd like to re-open discussion on this issue, since i think that i worded
the original statement poorly, and then dropped the ball.

i mention "outstanding" receives not in the sense of the spec:
"A business process instance MUST NOT simultaneously enable two or more
receive
activities for the same partnerLink, portType, operation and correlation
set(s)."

but in the sense of request/replies that have been received, but not yet
replied to.  i don't see anything in the current spec that forbids that,
and
in that case, <reply> will not be able to disambiguate.

arkin's issue 26 arrives at the same problem, but gets there a different
way.



danny

----- Original Message -----
From: "Danny van der Rijn" <dannyv@tibco.com>
To: <wsbpel@lists.oasis-open.org>
Sent: Monday, August 18, 2003 3:25 PM
Subject: Re: [wsbpel] Issue 49 - Disambiguating <receive>s to <reply> to


> 1) if the status response is somehow tied to the contents of the request
> message (status of x vs. status of y) then there's a problem.
>
> 2) the same issue can be a problem in processes where the request/reply
> isn't simply a request for status.
>
> danny
>
> ----- Original Message -----
> From: "Dieter Roller" <rol@de.ibm.com>
> To: "Danny van der Rijn" <dannyv@tibco.com>
> Cc: <wsbpel@lists.oasis-open.org>
> Sent: Saturday, August 16, 2003 10:27 PM
> Subject: Re: [wsbpel] Issue 49 - Disambiguating <receive>s to <reply> to
>
>
> >
> > Danny,
> >
> > two answers:
> >
> > (1) I don't think there  is a problem with multiple concurrent status
> > requests. In this case it is clear to which receive the reply goes.
> >
> > (2) I'm not sure that I understand your comment with other business
> cases..
> >
> >
> > Cheers,
> >
> >
> > dieter
> >
> > PS/I will on vacation the next two weeks and therefore will be unable
to
> > respond to your answers....
> >
> >
> >
> >
> > |---------+---------------------------->
> > |         |           Danny van der    |
> > |         |           Rijn             |
> > |         |           <dannyv@tibco.com|
> > |         |           >                |
> > |         |                            |
> > |         |           08/14/2003 09:42 |
> > |         |           PM               |
> > |         |                            |
> > |---------+---------------------------->
> >
>
>
---------------------------------------------------------------------------
> ------------------------------------------------------------------|
> >   |
> |
> >   |       To:       Dieter Roller/Germany/IBM@IBMDE,
> wsbpel@lists.oasis-open.org
> |
> >   |       cc:
> |
> >   |       Subject:  Re: [wsbpel] Issue 49 - Disambiguating <receive>s
to
> <reply> to                                                             |
> >   |
> |
> >   |
> |
> >
>
>
---------------------------------------------------------------------------
> ------------------------------------------------------------------|
> >
> >
> >
> > ah, i see.  is the only reason for this that otherwise it would open up
> > issue 49?  i can see lots of uses for this, especially with the event
> > handlers (how do you guard against multiple concurrent status
requests?),
> > but also business uses.
> >
> > thanks
> > danny
> >
> > ----- Original Message -----
> > From: "Dieter Roller" <rol@de.ibm.com>
> > To: <wsbpel@lists.oasis-open.org>
> > Sent: Thursday, August 14, 2003 12:50 AM
> > Subject: [wsbpel] Issue 49 - Disambiguating <receive>s to <reply> to
> >
> >
> > > Danny,
> > >
> > > this would result in a conflictingRequest exception unless the
> > correlation
> > > sets differ ...
> > >
> > > Cheers,
> > >
> > > dieter
> > >
> > >
> > >
> > >
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