Re: for-each-group - only get elements in each group

Hi, I have this XML:
...
I want to group on each unique <Category> element and then only include the
<Case> elements for each <Category>. Here is what I need:
...

t:\ftemp>type rick.xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Cases>
  <Story>
    <Category>Category1</Category>
    <Case>Case1</Case>
    <Category>Category1</Category>
    <Case>Case2</Case>
    <Category>Category1</Category>
    <Case>Case3</Case>
    <Category>Category1</Category>
    <Case>Case4</Case>
    <Category>Category2</Category>
    <Case>Case5</Case>
    <Category>Category2</Category>
    <Case>Case6</Case>
    <Category>Category2</Category>
    <Case>Case7</Case>
    <Category>Category2</Category>
    <Case>Case8</Case>
  </Story>
</Cases>
t:\ftemp>xslt2 rick.xml rick.xsl
<?xml version="1.0" encoding="UTF-8"?>
<cases>
   <category>Category1</category>
   <Case>Case1</Case>
   <Case>Case2</Case>
   <Case>Case3</Case>
   <Case>Case4</Case>
   <category>Category2</category>
   <Case>Case5</Case>
   <Case>Case6</Case>
   <Case>Case7</Case>
   <Case>Case8</Case>
</cases>

t:\ftemp>type rick.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  exclude-result-prefixes="xs"
  version="2.0">

<xsl:template match="/">
  <cases>
    <xsl:for-each-group select="Cases/Story/Case"
                        group-by="preceding-sibling::Category[1]">
      <category>
        <xsl:apply-templates select="preceding-sibling::Category[1]/node()"/>
      </category>
      <xsl:copy-of select="current-group()"/>
    </xsl:for-each-group>
  </cases>
</xsl:template>

</xsl:stylesheet>
t:\ftemp>

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