XML Tutorial/XPath/ancestor
Содержание
for-each select="ancestor::*"
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<AAA id="a1" pos="start">
<BBB id="b1"/>
<BBB id="b2"/>
</AAA>
<AAA id="a2">
<BBB id="b3"/>
<BBB id="b4"/>
<CCC id="c1">
<CCC id="c2"/>
</CCC>
<BBB id="b5">
<CCC id="c3"/>
</BBB>
</AAA>
</data>
File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<table>
<tr>
<th colspan="2">Axis: ancestor</th>
</tr>
<tr>
<td>Element</th>
<td>Node-set</th>
</tr>
<xsl:for-each select="/source//*">
<xsl:call-template name="print"/>
</xsl:for-each>
</table>
</xsl:template>
<xsl:template name="print">
<tr>
<td>
<xsl:value-of select="name()"/>
<xsl:text> id = </xsl:text>
<xsl:value-of select="./@id"/>
</td>
<td>
<xsl:for-each select="ancestor::*">
<xsl:if test="not(@id)">
<xsl:value-of select="name()"/>
</xsl:if>
<xsl:value-of select="./@id"/>
<xsl:text/>
</xsl:for-each>
</td>
</tr>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><table><tr><th colspan="2">Axis: ancestor</th></tr><tr><td>Element</th><td>Node-set</th></tr></table>
Is product the ancestor of "Java"?
File: Data.xml
<?xml version = "1.0"?>
<product>
<books>
<book>
Getting Started with Microsoft Visual C++
</book>
<book>Java</book>
</books>
</product>
File: Transform.xslt
<?xml version = "1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/product">
Is product the ancestor of "Java"?
<xsl:if
test="name(//node()[. = "Java"]/ancestor::product) = "product"">
Yes
</xsl:if>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
Is product the ancestor of "Java"?
Yes
select ancestor::*
File: Data.xml
<book>
<chapter>
<title>A</title>
<para>para1</para>
<para>para2</para>
</chapter>
<chapter>
<title>B</title>
<para>line 2</para>
<para>line 3</para>
</chapter>
<afterword>
<para>line 4</para>
</afterword>
<appendix>
<title>The Author</title>
<para>line 5</para>
<para>line 6</para>
</appendix>
</book>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="html" />
<xsl:template match="para">
<h1>Unaccounted for para element</h1>
<h2>Ancestors</h2>
<xsl:for-each select="ancestor::*">
<xsl:value-of select="name()" />
<xsl:if test="position() != last()">
<xsl:text>, </xsl:text>
</xsl:if>
</xsl:for-each>
<h2>Content</h2>
<xsl:apply-templates />
</xsl:template>
<xsl:template match="book">
<html>
<body>
<xsl:apply-templates />
</body>
</html>
</xsl:template>
<xsl:template match="title">
<h1>
<xsl:apply-templates />
</h1>
</xsl:template>
<xsl:template match="chapter/para">
<paragraph>
<font face="times">
<xsl:apply-templates />
</font>
</paragraph>
</xsl:template>
<xsl:template match="appendix/para">
<paragraph>
<font face="arial">
<xsl:apply-templates />
</font>
</paragraph>
</xsl:template>
</xsl:stylesheet>
select="ancestor::names/child::name[1]/child::family"
File: Data.xml
<?xml version="1.0"?>
<names>
<name>
<given>A</given>
<family>B</family>
</name>
</names>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" />
<xsl:template match="/">
<xsl:apply-templates select="child::names" />
</xsl:template>
<xsl:template match="child::names">
<xsl:apply-templates select="child::name[18]" />
</xsl:template>
<xsl:template match="child::name[18]">
<xsl:value-of
select="ancestor::names/child::name[1]/child::given" />
<xsl:text> </xsl:text>
<xsl:value-of
select="ancestor::names/child::name[1]/child::family" />
<xsl:text> is first on the list, and </xsl:text>
<xsl:value-of select="child::given" />
<xsl:text> </xsl:text>
<xsl:value-of select="child::family" />
<xsl:text> is last.</xsl:text>
</xsl:template>
</xsl:stylesheet>