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RE: [XQuery] static typing of node comparisons

From: Michael Rys <mrys@microsoft.com>
Date: Wed, 3 Dec 2003 09:46:05 -0800
Message-ID: <EB0A327048144442AFB15FCE18DC96C7016FA9DD@RED-MSG-31.redmond.corp.microsoft.com>
To: "David Carlisle" <davidc@nag.co.uk>
Cc: <dnovatchev@yahoo.com>, <public-qt-comments@w3.org>

Note that I am arguing from an XQuery point of view (given that this is
the topic of the subject line). I am not sure how you are planning on
using XPath in an interoperable way, since there is no conformance
requirement for XPath itself (it is given by the host language such as
XSLT). But I agree that many (but not all) XPath standalone uses
probably are less likely to use conservative static typing. 

Best regards
Michael

> -----Original Message-----
> From: David Carlisle [mailto:davidc@nag.co.uk]
> Sent: Wednesday, December 03, 2003 9:41 AM
> To: Michael Rys
> Cc: dnovatchev@yahoo.com; public-qt-comments@w3.org
> Subject: Re: [XQuery] static typing of node comparisons
> 
> 
> > that different platforms will always have minor differences in
numeric
> > precision etc.
> 
> Of course, but this is accepted and anyway most queries are not doing
> large scale numerical calculations one would hope.
> 
> But there is a vast difference between differences in numerical
results
> and differences that mean that the majority of queries written will
fail
> to even complile on some conforming implementations.
> 
> > I find this "interoperability issue" to be of minor concern.
> 
> For Xquery this is perhaps a sustainable view but for Xpath find it
> surprising that you are not even concened that the majority opinion in
> XPath implemntors appear to be that the interoperability problems and
> general typing complexity is so great that the implementations (and
> therefore one assumes, the users) should stick with XPath 1.
> 
> I think that the case for having an optional component of XPath that
> completely destroys any chance of interoperability just has not been
> made.
> 
> David
> 
> 
> 
> 
>
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Received on Wednesday, 3 December 2003 12:46:39 UTC

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