Subject: RE: How to do an OR within SELECT for a variable
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Sun, 21 Aug 2005 13:16:08 +0100
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> > Can I use something like :
> >
> > <xsl:variable name="var" select="A/B/C|X/D/@ID" />
> >
> > I think this gets interpretted as 'A/B/C' or 'X/D/@ID'
>
> You think correctly.
>
> I spell it out, but there may be a more succinct way.
>
> <xsl:variable name="var" select="A/B/C/D/@ID|A/B/X/D/@ID"/>
In 2.0 you can write
select="A/B/(C|X)/D/@ID
You have to be careful with such rewrites. I believe this works for "|" but
I discovered that it doesn't work for "except": [A//B//* except A//C//*]
gives a different result from [A//(B except C)//*]. If there's anyone
listening who fancies doing some formal analysis of these expressions for an
M.Sc project, I'd love to see the answers...
Michael Kay
http://www.saxonica.com/
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