Re: [xsl] Re: Grouping by attribute

Subject: Re: [xsl] Re: Grouping by attribute
From: Martin Honnen <Martin.Honnen@xxxxxx>
Date: Wed, 21 Oct 2009 17:22:37 +0200
Lajos Joo wrote:
I am using xmlspy for testing with the built in xslt engine which said that it is not a node item.
And in java:
Exception dropped during XSLT transformation: net.sf.saxon.trans.DynamicError: Required item type of second operand of 'intersect' is node(); supplied value has item type xs:string

I can see that happening when your complete XML has more than those 'par' element and that way the template is applied without passing in a value for the parameter.


In that case it might be better to introduce a mode to process those descendants of 'par' elements e.g.

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
  version="2.0"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema";
  exclude-result-prefixes="xsd">

<xsl:output indent="yes"/>

  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@*, node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="node()" mode="m1">
    <xsl:param name="cn"/>
    <xsl:if test="descendant-or-self::node() intersect $cn">
      <xsl:copy>
        <xsl:apply-templates select="@*"/>
        <xsl:apply-templates select="node()" mode="m1">
          <xsl:with-param name="cn" select="$cn"/>
        </xsl:apply-templates>
      </xsl:copy>
    </xsl:if>
  </xsl:template>

<xsl:template match="par">
<xsl:variable name="p" as="element()" select="."/>
<xsl:for-each-group select="descendant::node()" group-ending-with="linebreak">
<xsl:variable name="lb" as="element()?" select="current-group()[self::linebreak]"/>
<par>
<xsl:apply-templates select="$p/@*"/>
<xsl:apply-templates select="$p/node()[descendant-or-self::node() intersect (current-group() except $lb)]" mode="m1">
<xsl:with-param name="cn" select="current-group() except $lb"/>
</xsl:apply-templates>
</par>
</xsl:for-each-group>
</xsl:template>


</xsl:stylesheet>


--


	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/

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