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RE: XPath 2.0 - how much of XQuery should it include?

• To: "'Ronald Bourret'" <rpbourret@r...>
• Subject: RE: XPath 2.0 - how much of XQuery should it include?
• From: "Hutchison, Nigel" <Nigel.Hutchison@s...>
• Date: Mon, 13 May 2002 12:25:02 +0200
• Cc: "'xml-dev@l...'" <xml-dev@l...>

I would have thought that creating a query as a function definition and then
applying that definition
to parameters might be more like the authors intended.

Otherwise we would have to argue about the substitution semantics.

Nigel W.O Hutchison
Chief Scientist, W3C AC Representative
Software AG
Uhlandstr 12,  D-64297 Darmstadt, Germany
Tel +49 6151 92 1207



> -----Original Message-----
> From: Ronald Bourret [mailto:rpbourret@r...]
> Sent: Monday, May 13, 2002 11:54 AM
> Cc: xml-dev@l...
> Subject: Re:  XPath 2.0 - how much of XQuery should 
> it include?
> 
> 
> Jeni Tennison wrote:
> > It was simply that in the XQuery WD there's no mention of parameters
> > in the query prolog. Perhaps they're waiting in the wings.
> 
> Fair enough.
> 
> > I guess that you could have parameterisation through separate XML
> > documents accessed by document() (though without being able 
> to supply
> > the location of the document as a parameter, you're pretty limited).
> 
> I was thinking of something much more simple -- a simple parameter
> marker (?) that allows you to pass in values a la SQL:
> 
>    FOR $book IN document("catalog.xml")//book
>       WHERE $book/author = ?
>    RETURN $book
> 
> Of course, if this isn't in the language, it's not possible. 
> Then again,
> it will be among the first non-standard extensions that people invent.
> 
> -- Ron
> 
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