Issue - 165 - clarification of the default NS URI for expression and query language

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Issue - 165 - clarification of the default NS URI for expression and query language
Status: received

Date added: 23 Sep 2004

Categories: Syntax and validation, Related standards

Date submitted: 23 September 2004

Submitter: Alex Yiu

Description: 

Currently, http://www.w3.org/TR/1999/REC-xpath-19991116 is used as the default value of both expression language and query language, which represents XPath 1.0. 

In order for us to make use of XPath 1.0 within BPEL, the BPEL spec needs to define additional semantics for the cross-language bindings. Those details are actually specific to BPEL language in a sense. Strictly speaking, it is not appropriate to "hijack" the W3C namespace for our own use. 

(This was raised by Chris Keller in the course of issue 89 : Handling Unrecognized Query/Expression Languages  discussion at the face-to-face today)

Submitter's proposal: 

Replace the following text in BPEL spec: 

The default value for this attribute is XPath 1.0, represented by the URI of the XPath 1.0 specification: http://www.w3.org/TR/1999/REC-xpath-19991116.

with: 

The default value for this attribute is:  "urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0", which represents the usage of XPath 1.0 within WS-BPEL 2.0. The URI of the corresponding XPath 1.0 specification is: http://www.w3.org/TR/1999/REC-xpath-19991116.

See also:

result of some internet searching on OASIS URN namespace convention by Alex

RFC 3121, defining OASIS URN

I believe we still need try to get some official document from OASIS on how to use an OASIS-based URN.

Changes: 23 Sep 2004 - new issue

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