<xsl:if test="empty($maps[@old = local-name(current())]/@new)">
  ... generate your message ...
</xsl:if>

I hope this helps,
Wendell

Hi.

I'm doing a simple transformation, substituting some tags with
different named ones and keeping the rest the same.
Since there are many strange cases, I'd like to keep the mapping in
the intermediate XML file (to keep the XSL clean), such as maps.xml:

<?xml version="1.0" encoding="UTF-8"?>
<maps>
    <map old="old-tag1" new="tag1"></map>
    <map old="old-strange-tag2" new="tag2"></map>
    <!-- <map old="" new=""></map> -->
</maps>

and then transform using:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">

<xsl:variable name="maps" select="document('maps.xml')/maps/map"></xsl:variable>

<xsl:template match="*">
    <xsl:element name="{$maps[@old = local-name(current())]/@new}">
        <xsl:apply-templates select="node()|@*"/>
    </xsl:element>
</xsl:template>

</xsl:stylesheet>

But when I run that through Saxon 9B it says "Invalid element name.
Invalid QName {}" URL: http://www.w3.org/TR/xslt20/#err-XTDE0820

My source file contains both the elements matched by map and other elements too.

======================================================================
Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
17 West Jefferson Street                    Direct Phone: 301/315-9635
Suite 207                                          Phone: 301/315-9631
Rockville, MD  20850                                 Fax: 301/315-8285
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