Re: [xsl] What is the appropriate XPath 2.0 expression to reference an X

Dan Sullivan wrote: 

> Are you looking for something like 
>  
> *[local-name()='base' and (namespace-uri()='' or 
> namespace-uri()='http://www.w3.org/2001/XMLSchema']
That is a good suggestion Dan. Thank you. However, that XPath returns a 
simpleType not a QName (which is what I desire).

I wrote an XSLT program which returns the appropriate QName. See below. It is 
awful (i.e., it is a very complicated solution to a very simple problem). I am 
hoping that someone can provide a simple solution.  /Roger

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";  
                        xmlns:g="function"
                        xmlns:xs="http://www.w3.org/2001/XMLSchema";
                       exclude-result-prefixes="#all" 
                       version="2.0">
    
    <xsl:output method="text" />
    
    <xsl:template match="xs:schema">
        <xsl:message>
            <xsl:text>The appropriate prefix:local-name is: #</xsl:text>
            <xsl:value-of select="g:QName-for-local-name('base', .)"/>
            <xsl:text>#</xsl:text>
        </xsl:message>
    </xsl:template>
    
    <xsl:function name="g:QName-for-local-name">
        <xsl:param name="local-name" as="xs:string" />
        <xsl:param name="schema" as="element(xs:schema)" />
        
        <xsl:variable name="tns" select="$schema/@targetNamespace" 
as="xs:anyURI?"/>
        
        <xsl:variable name="prefix" select="g:namespace-prefix-for-uri($tns, 
$schema)" as="xs:string?"/>
        <xsl:choose>
            <xsl:when test="not($tns)">
                <xsl:value-of select="QName('', $local-name)"/>
            </xsl:when>
            <xsl:when test="not($prefix)">
                <xsl:value-of select="QName($tns, $local-name)"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of select="QName($tns, concat($prefix, ':', 
$local-name))"/>
            </xsl:otherwise>
        </xsl:choose>
        
    </xsl:function>
    
    <xsl:function name="g:namespace-prefix-for-uri" as="xs:string?">
        <xsl:param name="uri" as="xs:anyURI?" />
        <xsl:param name="schema" as="element(xs:schema)" />
        
        <xsl:choose>
            <xsl:when test="not($uri)" />
            <xsl:otherwise>
                <xsl:variable name="prefixes" 
select="in-scope-prefixes($schema)"/>
                <xsl:value-of 
select="g:auxiliary-namespace-prefix-for-uri($uri, $prefixes, $schema)"/>
            </xsl:otherwise>
        </xsl:choose>
        
    </xsl:function>
    
    <xsl:function name="g:auxiliary-namespace-prefix-for-uri" as="xs:string?">
        <xsl:param name="uri" as="xs:anyURI" />
        <xsl:param name="prefixes" as="xs:string*" />
        <xsl:param name="schema" as="element(xs:schema)" />
        
        <xsl:choose>
            <xsl:when test="count($prefixes) eq 0" />
            <xsl:when test="namespace-uri-for-prefix($prefixes[1], $schema) eq 
$uri">
                <xsl:value-of select="$prefixes[1]"/>
            </xsl:when>
            <xsl:otherwise>
                <xsl:value-of 
select="g:auxiliary-namespace-prefix-for-uri($uri, $prefixes[position() gt 1], 
$schema)"/>
            </xsl:otherwise>
        </xsl:choose>
        
    </xsl:function>
    
</xsl:stylesheet>
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