XML/XSLT stylesheet/current group
Get current group
File: Data.xml
<?xml version="1.0"?>
<towns>
<town>A</town>
<town>B</town>
<town>C</town>
<town>D</town>
<town>E</town>
<town>F</town>
<town>G</town>
<town>H</town>
<town>I</town>
<town>J</town>
<town>K</town>
<town>L</town>
</towns>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:param name="cols" select="4" />
<xsl:template match="towns">
<table>
<xsl:variable name="sorted-towns" as="element()*">
<xsl:perform-sort select="town">
<xsl:sort />
</xsl:perform-sort>
</xsl:variable>
<xsl:for-each-group select="$sorted-towns"
group-adjacent="(position()-1) idiv $cols">
<tr>
<xsl:for-each select="current-group()">
<td>
<xsl:value-of select="." />
</td>
</xsl:for-each>
</tr>
</xsl:for-each-group>
</table>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<table>
<tr>
<td>A</td>
<td>B</td>
<td>C</td>
<td>D</td>
</tr>
<tr>
<td>E</td>
<td>F</td>
<td>G</td>
<td>H</td>
</tr>
<tr>
<td>I</td>
<td>J</td>
<td>K</td>
<td>L</td>
</tr>
</table>
Use count() and current-group() to count groups
File: Data.xml
<?xml version="1.0" encoding="UTF-8"?>
<employees>
<employee>
<FirstName>A</FirstName>
<LastName>B</LastName>
<Country>USA</Country>
</employee>
<employee>
<FirstName>C</FirstName>
<LastName>D</LastName>
<Country>USA</Country>
</employee>
<employee>
<FirstName>E</FirstName>
<LastName>F</LastName>
<Country>USA</Country>
</employee>
</employees>
File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<body>
<h3>header</h3>
<xsl:for-each-group select="employees/employee"
group-by="Country">
<xsl:sort select="current-grouping-key()" />
<p>
Number of employees who live in:
<b>
<xsl:value-of
select="current-grouping-key()" />
</b>
is
<xsl:value-of select="count(current-group())" />
</p>
<xsl:result-document
href="{current-grouping-key()}.xml">
<employees>
<xsl:copy-of select="current-group()" />
</employees>
</xsl:result-document>
</xsl:for-each-group>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
Word count
File: Data.xml
<poem>
<author>author 1</author>
<date>1912</date>
<title>Song</title>
<stanza>
<line>line 1</line>
<line>line 2</line>
<line>line 3</line>
<line>line 4</line>
</stanza>
<stanza>
<line>line 5</line>
<line>line 6</line>
<line>line 7</line>
<line>line 8</line>
</stanza>
<stanza>
<line>line 9</line>
<line>line 10</line>
<line>line 11</line>
<line>line 12</line>
</stanza>
</poem>
File: Transform.xslt
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:template match="/">
<wordcount>
<xsl:for-each-group group-by="."
select="
for $w in tokenize(string(.), "\W+") return lower-case($w)">
<xsl:sort select="count(current-group())"
order="descending" />
<word word="{current-grouping-key()}"
frequency="{count(current-group())}" />
</xsl:for-each-group>
</wordcount>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<wordcount>
<word word="line" frequency="12"/>
<word word="" frequency="2"/>
<word word="1" frequency="2"/>
<word word="author" frequency="1"/>
<word word="1912" frequency="1"/>
<word word="song" frequency="1"/>
<word word="2" frequency="1"/>
<word word="3" frequency="1"/>
<word word="4" frequency="1"/>
<word word="5" frequency="1"/>
<word word="6" frequency="1"/>
<word word="7" frequency="1"/>
<word word="8" frequency="1"/>
<word word="9" frequency="1"/>
<word word="10" frequency="1"/>
<word word="11" frequency="1"/>
<word word="12" frequency="1"/>
</wordcount>