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RE: [xsl] Count of unique attribute names

2006-11-03 06:02:04
My XSLT 2.0 solution below is working. I am just wondering if 
there is an easier way that could perhaps bring 
distinct-values() into play?

<xsl:variable name="uniqueAttributeNames">
      <xsl:for-each-group select="//@*" group-by="local-name()">
              <xsl:sequence select="local-name()"/>
      </xsl:for-each-group>
</xsl:variable>
<xsl:sequence 
select="string-length(replace(replace($uniqueAttributeNames,
'\c+',  'x'), '\C+', ''))"/>


Firstly, if you make uniqueAttributeNames hold a sequence of strings rather
than a single string, then you can use the much simpler expression
count($uniqueAttributeNames) to count them.

You can do this (a) by adding an "as" clause to the variable declaration

<xsl:variable name="uniqueAttributeNames" as="xs:string*">

or (b) by using distinct-values. So the whole thing is just

<xsl:sequence select="count(distinct-values(//@*/local-name()))"/>


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