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Subject: RE: [wsbpel] Issue - 271 - ConflictingReceive with Different CorrelationSets


Mark, I agree. So the result would be something like this:


      Moreover, if a business process instance simultaneously enables two
      or more receive activities for the same partnerLink, portType,
      operation but different correlationSet(s), and the correlations of
      multiple of these activities match an incoming request message, then
      conflictingReceive must also be thrown by each of these activities.

Kind Regards
DK
                                                                       
 Dieter König                                Mail: dieterkoenig@de.ibm.com         IBM Deutschland Entwicklung GmbH
                                                                       
 Senior Technical Staff Member               Tel (office): (+49) 7031-16-3426      Schönaicher Strasse 220
                                                                       
 Architect, Business Process Choreographer   Fax (office): (+49) 7031-16-4890      71032 Böblingen
                                                                       
 Member, Technical Expert Council            Tel (home office): (+49) 7032-201464  Germany
                                                                       





                                                                       
             "Mark Ford"                                               
             <mark.ford@active                                         
             -endpoints.com>                                            To
                                       <wsbpel@lists.oasis-open.org>   
             29.04.2006 12:35                                           cc
                                                                       
                                                                   Subject
                                       RE: [wsbpel] Issue - 271 -      
                                       ConflictingReceive with Different
                                       Correlation Sets                
                                                                       
                                                                       
                                                                       
                                                                       
                                                                       
                                                                       




I assume that you intend to fault both of the receives with a
bpel:conflictingReceive. This should be made explicit in the spec text.

There is also another case where R1 and R2 contain the same data for their
correlation sets. In this case we could detect the conflicting receive at
the point of execution of the second receive and only fault it.
From: ws-bpel issues list editor [mailto:peter.furniss@erebor.co.uk]
Sent: Friday, April 28, 2006 7:51 PM
To: wsbpel@lists.oasis-open.org
Subject: [wsbpel] Issue - 271 - ConflictingReceive with Different
Correlation Sets



This issue has been added to the wsbpel issue list with a status of
"received". The status will be changed to "open" if a motion to open the
issue is proposed and that motion is approved by the TC. A motion could
also be proposed to close it without further consideration. Otherwise it
will remain as "received".


The issues list is posted as a Technical Committee document to the OASIS
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is the most recent version of the document entitled in the "Issues" folder
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Issue - 271 - ConflictingReceive with Different Correlation Sets


Status: received
Date added: 28 Apr 2006
Date submitted: 28 April 2006
Submitter: Dieter Koenig1
Document: WS-BPEL 2.0 Committee Draft
Description: Section 10.4 defines cases where conflictingReceive must be
thrown:


      A business process instance MUST NOT simultaneously enable two or
      more receive activities for the same partnerLink, portType, operation
      and correlationSet(s).


This definition does not provide the uniqueness required to unambigously
route an incoming request message to the right inbound message activity.


Consider two simultaneously enabled activities (today not a
conflictingReceive because of different correlation sets):


<receive partnerLink="PL1" portType="PT1" operation="OP" ...>
   <correlations>
      <correlation set="CS1" initiate="no"/>
   </correlations>
<receive/>





<receive partnerLink="PL1" portType="PT1" operation="OP" ...>
   <correlations>
      <correlation set="CS2" initiate="no"/>
   </correlations>
<receive/>



In a scenario where BOTH CS1 AND CS2 match an incoming request,
conflictingReceive should also be thrown.
Submitter's proposal: Add text following the sentence quoted above:


      Moreover, if a business process instance simultaneously enables two
      or more receive activities for the same partnerLink, portType,
      operation but different correlationSet(s), and the correlations of
      multiple of these activities match an incoming request message, then
      conflictingReceive must also be thrown".



Changes: 28 Apr 2006 - new issue



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