[xsl] Pick up generated numbering for cross reference using key?

Subject: [xsl] Pick up generated numbering for cross reference using key?
From: "Cas Tuyn" <Cas.Tuyn@xxxxxxxx>
Date: Tue, 22 Mar 2005 14:13:54 +0100

My tables have double-digit numbering generated from the section number
as a variable, and the calculated sequence inside the section:

<xsl:template match="table">
	<xsl:param name="secnum" />
	<xsl:variable name="tabnum">
		<xsl:value-of select="count(preceding::table)+1" />
... lines left out ...
		Table <xsl:value-of select="$secnum" />.<xsl:value-of
select="$tabnum" /> <xsl:value-of select="title" />

This works good. Now I'm trying to make cross references to those
tables. I've searched the xsl archives and found a 2001 thread where it
was suggested to either calculate it again (impossible because of the
section-part being a variable), or store it in a key value. The latter
method reminds me of arrays in other languages, so I thought it was the
right direction.

Using the 'XSLT programmers reference' it appears that:
1. you can only use xsl:key immediately under the root of the document,
2. put existing text or attribute values (not generated) in there.

I was hoping to insert:
	<xsl:key name="table-number" match="@id" use="$secnum . $tabnum"
immediately below the variable definition shown above, but that returned
"Unexpected child" due to rule #1 not observed.

The XML code for origin and target of the link:
	<xref role="table" linkend="csrh026a.dia-6"/>
	<table id="csrh026a.dia-6">

The XSLT for the origin of the link:
	<xsl:template match="xref">
		<xsl:for-each select="@linkend">
			<xsl:variable name="linkend" select="."/>
			<xsl:element name="a">
name="href">#<xsl:value-of select="."/></xsl:attribute>
				<xsl:for-each select="../@role">
							table x.x

The "x.x" should be the number of the table where I refer too.

 1. Is this a good way of doing this?
 2. Is there a better way using XSLT 1.0



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