RE: [xsl] XQuery 1.0 and XPath 2.0 Functions and Operators Versio n 1.0

Subject: RE: [xsl] XQuery 1.0 and XPath 2.0 Functions and Operators Versio n 1.0
From: DPawson@xxxxxxxxxxx
Date: Fri, 7 Sep 2001 10:41:10 +0100
Mike Kay wrote:
> The basic idea of having sequences in the data model rather 
> than sets is
> that the result of sorting a node-set can be assigned to a variable,
> something which isn't possible in XSLT 1.0. There are then 
> mechanisms for
> iterating over a sequence or indexing into it.

Does that mean that the functions listed in the sequences part
is also viable for node-sets?

> > Unsure if xf:value-distinct does this or not, it appears to work on
> > 'sequences' (which I guess includes node-sets?), and determines
> > uniqueness by element content? Given an example
> > <cat>
> >   <head>...</head>
> >   <content>... </content>
> >   <other elements ....
> > </cat>
> > as the 'sequence' would it sort on the concat of head, content etc,
> > or is that what the optional 'collation' is for?
> >
> Not really. The collation is for sorting strings. Deriving a 
> string to act
> as the sort key of a node, when sorting nodes, is a different problem.

In which case I think the same function should be available for node-sets.

Regards DaveP

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