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RE: XQuery 1.0 and XPath 2.0 Functions and Operators Version 1.0
- To: xsl-list at lists dot mulberrytech dot com
- Subject: RE: [xsl] XQuery 1.0 and XPath 2.0 Functions and Operators Version 1.0
- From: DPawson at rnib dot org dot uk
- Date: Fri, 7 Sep 2001 10:41:10 +0100
- Reply-To: xsl-list at lists dot mulberrytech dot com
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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