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RE: Subject: Counting Path Occurrences

Subject: RE: Subject: Counting Path Occurrences
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Fri, 30 Mar 2007 08:27:30 +0100
RE:  Subject:  Counting Path Occurrences
> So, start with a stylesheet function to generate the paths 
> (/a/b/x) using the ancestor-or-self axis:
> <xsl:function name="gn:path">
> 	<xsl:param name="node" as="node()"/>
> 	<xsl:for-each select="$node">
> 		<xsl:for-each select="ancestor-or-self::*"><xsl:value-of
> select="concat('/', name())"/></xsl:for-each>
> 	</xsl:for-each>
> </xsl:function>

Actually that function generates a sequence of text nodes.
> My hope was to use it like this in the template that matches "/":
> <xsl:for-each-group select="descendant-or-self::*"
> group-by="gn:path(.)">
> 	Path: <xsl:value-of select="gn:path(.)"/> - Count: 
> <xsl:value-of select="count(current-group())"/> </xsl:for-each-group>
> Unfortunately, stylesheet functions only return item()*, not 
> string,

Stylesheet functions return whatever you choose them to return. The simplest
way to return the string you want is

<xsl:function name="gn:path" as="xs:string">
  <xsl:param name="node" as="node()"/>
  <xsl:sequence select="concat('/', string-join(ancestor-or-self::*/name(),

Michael Kay

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