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RE: Parametrized xsl:sort

Subject: RE: Parametrized xsl:sort
From: "Neale Morison" <nmorison@xxxxxxxxxxxxxx>
Date: Fri, 30 Aug 2002 14:03:57 +1000
RE:  Parametrized xsl:sort

> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Peter Davis
> Sent: Friday, 30 August 2002 12:57 PM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Parametrized xsl:sort
> On Thursday 29 August 2002 19:15, Neale Morison wrote:
> > To be specific, I want the result of:
> >         <xsl:sort select="$sortkey" order="descending"/>
> Since a normal variable doesn't change, the sort will have no
> effect (but I'm
> sure you already figured this out).
> > with parameter sortkey:
> >         <xsl:with-param name="sortkey" select="@name"/>
> If you pass select="@name", it will evaluate "@name" in the
> context of the
> with-param, not in the sort.  So you probably want to change this to:
> <xsl:with-param name="sortkey" select="'@name'"/>
> which will pass the string '@name' to be evaluated later.
> > to be equivalent to:
> >         <xsl:sort select="@name" order="descending"/>
> To evaluate the string, you need to use some kind of
> extension function.  Look
> in the documentation of whatever processor you use; it will
> probably look
> like:
> <xsl:sort order="descending" select="xxx:evaluate($sortkey)"/>
> The 'xxx' will be associated with an extension namespace
> specific to your
> processor.  The evaluate() function will take the string $sortkey and
> evaluate it as an XPath expression.
> --
> Peter Davis
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

Thanks. I thought I might be able to do it without an eval, but the eval
method does work. Regards,

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

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