RE: sorting and parameters

[Kay Michael <Michael.Kay@xxxxxxx>]

>How do I pass a sort key to a stylesheet?
> 
> Here's my stylesheet --
> 
>                 <xsl:apply-templates select="item">
>                         <xsl:sort select="{$key}" 
> 
> Using Saxon, I get the error "Invalid character ({) in 
> expression {$key}".
> I think the syntax is right because I have no problem with 
> the sortorder parameter.

The order parameter is an attribute value template but the select attribute
(like all other attributes whose value is an expression) isn't. You can't
use the "{}" notation except in an attribute that's explicitly an AVT.

There's no direct way of achieving what you want in XSLT. The only ways to
do it are (a) to generate a stylesheet on the fly and execute that, or (b)
to write an extension function.

Mike Kay


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