Re: [xsl] nested grouping problem using group-adjacent

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
  
<xsl:template match="objects" name="objects">
  <xsl:param name="o" select="object"/>
  <xsl:param name="d" select="1"/>
  <xsl:for-each-group group-adjacent="@depth&gt;$d" select="$o">
    <xsl:choose>
      <xsl:when test="current-grouping-key()">
        <xsl:element name="group-{$d}">
          <xsl:call-template name="objects">
            <xsl:with-param name="o" select="current-group()"/>
            <xsl:with-param name="d" select="$d+1"/>
          </xsl:call-template>
        </xsl:element>
      </xsl:when>
      <xsl:otherwise>
        <xsl:copy-of select="current-group()"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:for-each-group>
</xsl:template>

</xsl:stylesheet>


$ saxon8 ob.xml ob.xsl \!indent=yes
<?xml version="1.0" encoding="UTF-8"?>
<object depth="1">data</object>
<object depth="1">data</object>
<group-1>
   <object depth="2">data</object>
   <object depth="2">data</object>
   <group-2>
      <object depth="3">data</object>
      <object depth="3">data</object>
      <object depth="3">data</object>
   </group-2>
   <object depth="2">data</object>
   <object depth="2">data</object>
</group-1>
<object depth="1">data</object>
<group-1>
   <object depth="2">data</object>
</group-1>
<object depth="1">data</object>

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