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Subject: RE: [wsbpel] Issue - 72 - Background information about WS-I BP1.0 recommendations on use of WSDL1.1

Bindings are out of scope for the BPEL spec, but we are likely to talk about them in the use cases, so we probably cannot leave them out of the picture entirely.
-----Original Message-----
From: Liu, Kevin [mailto:kevin.liu@sap.com]
Sent: Thursday, October 02, 2003 9:47 AM
To: 'wsbpel@lists.oasis-open.org'
Subject: [wsbpel] Issue - 72 - Background information about WS-I BP1.0 recommendations on use of WSDL1.1

Hi all,


Attached please find a set of slides which provide a summary and some details about the BP1.0 recommendations on the use of WSDL1.1.


After a preliminary analysis on these BP1.0 recommendations, I feel that we should adopt WS-BP1.0 for BPEL.  Below are my observations:


- BP1.0 provides many valuable clarifications on use of WSDL1.1. These clarifications should be reflected in all WSDL examples in BPEL spec


- The following BP1.0 constraints affect portType definitions and should be considered for BPEL

n       XML1.0 is mandated for WSDL definitions - OK, that's the status quo.

n       XML schema is the only conformant type system - OK, I believe that's also the status quo. BPEL only use XSD for data type definition

n       Disallow operation overloading - operation name must be unique within a portType - should be enforced. I don't see anything in BPEL relies on this

n       Disallow out-bound operations - OK, that's the status quo


- The following constraints are for bindings, there is no direct conflict with BPEL

n       SOAP over HTTP is the only conformant binding -OK, we only provide conformant portType definition, bindings are up to the services implementers.

n       Disallows (soap) encoding - OK, same as above

Best Regards,

-----Original Message-----
From: ws-bpel issues list editor [mailto:peter.furniss@choreology.com]
Wednesday, October 01, 2003 1:14 PM
Subject: [wsbpel] Issue - 72 - What to do with WS-I BP1.0?


This issue has been added to the wsbpel issue list. The issues list is posted as a Technical Committee document to the OASIS WSBPEL TC pages on a regular basis. The current edition, as a TC document, is the most recent document with the title in the "Issues" folder of the WSBPEL TC document list - the next posting will include this issue. The list editor's working copy, which will normally include an issue when it is announced, is available at this constant URL.

Issue - 72 - What to do with WS-I BP1.0?

Status: open
Date added: 1 Oct 2003
Submitter: Liu, Kevin
Date submitted: 01 October 2003
Document: Specification
Description: WS-I BP1.0 provides clarifications and constraints on the use of WSDL1.1. We need to investigate and decide if BPEL should be aligned with BP1.0. In particular, a few questions need to be answered:

1.      Would BP 1.0 be restricting BPEL to the point that some of BPEL's functionality would not be available?

2.      Would the fact that BP 1.0 only addresses the SOAP/HTTP binding imply that also BPEL should be limited to that type of binding?

3.      Should a BPEL process be offered as a Web service that is BP 1.0 compliant?

4.      Would it be fair to limit BPEL use to interacting with BP 1.0 compliant Web services only?

1 Oct 2003 - new issue

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