[wsbpel] Issue - R24 - Externally referenced locally-scoped partnerLinks

[Dieter Koenig1 <dieterkoenig@de.ibm.com>]

The WS-BPEL specification does not standardize external references to
partner links or other elements. Moreover, it is out of scope how partner
links are bound.

One could imagine e.g. using XPath expressions for uniquely identifying
constructs within a WS-BPEL process definition. Naturally, this does not
consider runtime aspects. Scopes with local partner links may be embedded
in repeatable constructs (loops or event handlers) where partner links
inside each scope instance may have to be treated individually.

For the purpose of binding WS-BPEL partner links to external entities, see
also the papers produced by the Open Service Oriented Architecture
collaboration (osoa.org), in particular the Service Component Architecture
(SCA) Client and Implementation Model for BPEL (at
http://osoa.org/download/attachments/35/SCA_ClientAndImplementationModelforBPEL_v0.95.pdf?version=2)
 which specifies the binding of WS-BPEL partner links within an SCA
component assembly and also addresses scoped partner links (in section
1.3.3).

HTH
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
                                                                       





                                                                       
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                                       [wsbpel] Issue - R24 - Externally
             Please respond to         referenced locally-scoped       
             wsbpel@lists.oasi         partnerLinks                    
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Issue - R24 - Externally referenced locally-scoped partnerLinks


Status: received
Date added: 17 Oct 2006
Origin: Public comment - Jim Clunes, 16 October 2006
Date submitted: 17 October 2006
Description: Is there a standard way to refer to a locally-scoped
partnerLink from outside the process? My reading of the specification is
that partnerLink names need only be unique within the scope that they are
defined, not necessarily unique to the entire process.


However, the last sentence of section 6.2 says:
      The initial binding information of a <partnerLink> can be set as a
      part of business process deployment, regardless of whether it is
      declared on the <process> or <scope> element level.


What identifier should deployment descriptors use to reference these
locally-scoped partnerLinks for the purpose of initializePartnerRole?
Changes: 17 Oct 2006 - new issue



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