Re: [xacml] XPath 2.0 support

[Erik Rissanen <erik@axiomatics.com>]

This seems good to me. The OASIS XACML text already has the references, 
we just need to update them to the final recommendation.

I made this into issue 81 in the issues list.

BTW, the current core drafts are based on the OASIS XACML. Is there 
anything I should bring in from the ITU-T text?

Regrads,
Erik

Anne Anderson - Sun Microsystems wrote:
> We might also address the related issue of the standard XACML 2.0 
> datatypes and functions that are defined using references to "XQuery 
> 1.0 and XPath 2.0 Functions and Operators," W3C Working Draft, 16 
> August 2002, at 
> http://www.w3.org/TR/2002/WD-xquery-operators-20020816.  Note this is 
> a Working Draft, and not a W3C approved Recommendation.  For the ITU-T 
> standard, since ITU-T does not allow normative references to 
> non-standards, we inserted into XACML 2.0 itself the text from that 
> draft necessary to define the affected types and functions, removing 
> the external dependencies.
>
> If we can determine that the definitions in the XPath 2.0 
> Recommendation are consistent with the definitions used in XACML 2.0, 
> then we could reference the functions in XPath 2.0 and still preserve 
> backwards compatibility.  By referencing the XPath 2.0 functions, 
> XACML implementations could re-use XPath 2.0 function implementations, 
> or at least feel more free to do so.
>
> The affected datatypes are:
>
> http://www.w3.org/TR/2002/WD-xquery-operators-20020816#dayTimeDuration
> http://www.w3.org/TR/2002/WD-xquery-operators-20020816#yearMonthDuration
>
> The affected functions, which all have prefix 
> "urn:oasis:names:tc:xacml:1.0:function:...", are:
>
> date-equal
> time-equal
> dateTime-equal
> dayTimeDuration-equal
> yearMonthDuration-equal
> anyURI-equal
> dateTime-add-dayTimeDuration
> dateTime-add-yearMonthDuration
> dateTime-subtract-dayTimeDuration
> dateTime-subtract-yearMonthDuration
> date-add-yearMonthDuration
> date-subtract-yearMonthDuration
> dateTime-greater-than
> dateTime-greater-than-or-equal
> dateTime-less-than
> dateTime-less-than-or-equal
> date-greater-than
> date-greater-than-or-equal
> date-less-than
> date-less-than-or-equal
> xpath-node-equal
> xpath-node-match
>
> Regards,
> Anne