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File: Data.xml
<?xml version="1.0"?>
<html>
<body>
<h2>A</h2>
<p class="item">A</p>
<p class="item">B</p>
<p class="note">C</p>
<p class="note">D</p>
<p class="note">E</p>
<p class="item">F</p>
<h2>B</h2>
<p class="item">b1</p>
<p class="item">b2</p>
<p class="note">b3</p>
<p class="item">b4</p>
</body>
</html>
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:template match="/">
<chapter>
<title>Grouping in XSLT</title>
<xsl:apply-templates select="html/body"/>
</chapter>
</xsl:template>
<xsl:template match="body">
<xsl:for-each-group select="*" group-starting-with="h1">
<sect1>
<xsl:apply-templates select="current-group()"/>
</sect1>
</xsl:for-each-group>
</xsl:template>
<xsl:template match="h1">
<title>
<xsl:apply-templates/>
</title>
</xsl:template>
<xsl:template match="p">
<para>
<xsl:apply-templates/>
</para>
</xsl:template>
<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<chapter>
<title>Grouping in XSLT</title>
<sect1>
<h2>A</h2>
<para>A</para>
<para>B</para>
<para>C</para>
<para>D</para>
<para>E</para>
<para>F</para>
<h2>B</h2>
<para>b1</para>
<para>b2</para>
<para>b3</para>
<para>b4</para>
</sect1>
</chapter>
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