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2010-05-26T08:27:01Z

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в 18:22, 25 мая 2010

2010-05-25T18:22:32Z

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== Define and use variable==



<source lang="xml">
File: Data.xml
<?xml version="1.0"?>
<addressbook>
<address>
<name>
<title>Ms.</title>
<first-name>Jack</first-name>
<last-name>Smith</last-name>
</name>
<street>707 Main Way</street>
<city>New York</city>
<state>ME</state>
<zip>00218</zip>
</address>
</addressbook>

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" indent="no" />
<xsl:strip-space elements="*" />
<xsl:variable name="newline">
<xsl:text></xsl:text>
</xsl:variable>
<xsl:template match="/">
<xsl:for-each select="addressbook/address">
<xsl:sort select="name/last-name" />
<xsl:value-of select="name/title" />
<xsl:text> </xsl:text>
<xsl:value-of select="name/first-name" />
<xsl:text> </xsl:text>
<xsl:value-of select="name/last-name" />
<xsl:value-of select="$newline" />
<xsl:value-of select="street" />
<xsl:value-of select="$newline" />
<xsl:value-of select="city" />
<xsl:text>, </xsl:text>
<xsl:value-of select="state" />
<xsl:text> </xsl:text>
<xsl:value-of select="zip" />
<xsl:value-of select="$newline" />
<xsl:value-of select="$newline" />
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Output:
Ms. Jack Smith707 Main WayNew York, ME 00218</source>

== Define variable and use it==



<source lang="xml">
File: Data.xml

<x>
<input>7</input>
<input>27</input>
</x>
File: Transform.xslt
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="text" indent="yes" version="1.0" />
<xsl:template match="x">
<xsl:apply-templates select="y" />
</xsl:template>
<xsl:template match="y">
<xsl:param name="x" select="/x/input" />
<xsl:variable name="y" select="$x - 1" />
<xsl:variable name="z" select="." />
<xsl:value-of select="$x" />
<xsl:text> - 1 = </xsl:text>
<xsl:value-of select="$y" />
<xsl:text></xsl:text>
<xsl:if test="$x > 1">
<xsl:apply-templates select="$z">
<xsl:with-param name="x" select="$x - 1" />
</xsl:apply-templates>
</xsl:if>
</xsl:template>
</xsl:stylesheet></source>

== demonstrate different ways of setting xsl:variable==



<source lang="xml">
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<chapter>Chapter A</chapter>
<chapter>Chapter B</chapter>
<chapter>Chapter C</chapter>
<chapter>Chapter D</chapter>
</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:variable name="totalChapters" select="count(//chapter)"/>
<xsl:template match="/">
<TABLE>
<xsl:for-each select="//chapter">
<TR>
<TD>
<xsl:value-of select="."/>
<xsl:text> (</xsl:text>
<xsl:value-of select="position()"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="$totalChapters"/>
<xsl:text>)</xsl:text>
</TD>
</TR>
</xsl:for-each>
</TABLE>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE><TR><TD>Chapter A (1/4)</TD></TR><TR><TD>Chapter B (2/4)</TD></TR><TR><TD>Chapter C (3/4)</TD></TR><TR><TD>Chapter D (4/4)</TD></TR></TABLE></source>

== Fill position to a variable==



<source lang="xml">
File: Data.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="Transform.xslt" ?>
<nodeTester type="referral">
<function>
<name>position() function</name>
</function>
<text>
This function helps find the position of a node in the node
list.
</text>
</nodeTester>
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" indent="no" />
<xsl:template match="nodeTester">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="text">
<xsl:variable name="myPositionVariable" select="position()" />
NodeList position =
<xsl:value-of select="$myPositionVariable" />
</xsl:template>
</xsl:stylesheet>
Output:

position() function

NodeList position =
4</source>

== if a variable has some defined value==



<source lang="xml">
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<animal>cat</animal>
<animal>dog</animal>
<animal>cow</animal>
</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:variable name="color">red</xsl:variable>
<xsl:template match="//animal">
<xsl:choose>
<xsl:when test="boolean($color)">
<P style="color:{$color}">
<xsl:value-of select="."/>
</P>
</xsl:when>
<xsl:otherwise>
<paragraph>
<xsl:value-of select="."/>
</P>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<P style="color:red">cat</P>
<P style="color:red">dog</P>
<P style="color:red">cow</P></source>

== There is an important difference in variable value specification.==



<source lang="xml">
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<AAA>
<BBB>
<CCC>C1</CCC>
</BBB>
<CCC>C2</CCC>
<CCC>C3</CCC>
</AAA>
<AAA>
<CCC>
<DDD>D1</DDD>
<DDD>D2</DDD>
</CCC>
</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:variable name="var1" select="//AAA/CCC/text()"/>
<xsl:variable name="var2">//AAA/CCC/text()</xsl:variable>
<xsl:template match="/">
<xsl:call-template name="function">
<xsl:with-param name="path1" select="//AAA/CCC/DDD"/>
<xsl:with-param name="path2">//AAA/CCC/DDD</xsl:with-param>
</xsl:call-template>
</xsl:template>
<xsl:template name="function">
<xsl:param name="path1"/>
<xsl:param name="path2"/>
<paragraph>
<xsl:value-of select="$path2"/>
<xsl:text> : </xsl:text>
<xsl:value-of select="$path1"/>
</P>
<paragraph>
<xsl:value-of select="$var2"/>
<xsl:text> : </xsl:text>
<xsl:for-each select="$var1">
<xsl:value-of select="."/>
<xsl:text/>
</xsl:for-each>
</P>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><paragraph>//AAA/CCC/DDD : D1</P><paragraph>//AAA/CCC/text() : C2C3

</P></source>

== Use variable to hold a result tree==



<source lang="xml">
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<TABLE border="1">
<TR>
<TD>AAA</TD>
<TD>BBB</TD>
</TR>
<TR>
<TD>aaa</TD>
<TD>bbb</TD>
</TR>
</TABLE>
<TABLE border="1">
<TR>
<TD>1111111</TD>
</TR>
<TR>
<TD>22222222</TD>
</TR>
</TABLE>
</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:variable name="A1">
<xsl:copy-of select="//TABLE[1]"/>
</xsl:variable>
<xsl:variable name="A2">
<xsl:copy-of select="//TABLE[2]"/>
</xsl:variable>
<xsl:template match="/">
<xsl:copy-of select="$A2"/>
<xsl:copy-of select="$A1"/>
<xsl:copy-of select="$A2"/>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE border="1">
<TR>
<TD>1111111</TD>
</TR>
<TR>
<TD>22222222</TD>
</TR>
</TABLE><TABLE border="1">
<TR>
<TD>AAA</TD>
<TD>BBB</TD>
</TR>
<TR>
<TD>aaa</TD>
<TD>bbb</TD>
</TR>
</TABLE><TABLE border="1">
<TR>
<TD>1111111</TD>
</TR>
<TR>
<TD>22222222</TD>
</TR>
</TABLE></source>

== Variable assignment with choose statement==



<source lang="xml">
File: Data.xml
<?xml version="1.0"?>
<list xml:lang="en">
<title>title 1</title>
<listitem>item 1</listitem>
<listitem>item 2</listitem>
<listitem>item 3</listitem>
<listitem xml:lang="sw">item 4</listitem>
<listitem xml:lang="en-gb">item 5</listitem>
<listitem xml:lang="zu">item 6</listitem>
<listitem xml:lang="jz">item 7</listitem>
</list>

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:variable name="favoriteNumber" select="23"/>
<xsl:variable name="favoriteColor" select=""blue""/>
<xsl:variable name="complicatedVariable">
<xsl:choose>
<xsl:when test="count(//listitem) > 10">
<xsl:text>really long list</xsl:text>
</xsl:when>
<xsl:when test="count(//listitem) > 5">
<xsl:text>moderately long list</xsl:text>
</xsl:when>
<xsl:otherwise>
<xsl:text>fairly short list</xsl:text>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:template match="/">
<xsl:text>Hello! Your favorite number is </xsl:text>
<xsl:value-of select="$favoriteNumber"/>
<xsl:text>.
Your favorite color is </xsl:text>
<xsl:value-of select="$favoriteColor"/>
<xsl:text>.

Here is a </xsl:text>
<xsl:value-of select="$complicatedVariable"/>
<xsl:text>:
</xsl:text>
<xsl:variable name="listitems" select="list/listitem"/>
<xsl:call-template name="processListitems">
<xsl:with-param name="items" select="$listitems"/>
</xsl:call-template>
</xsl:template>
<xsl:template name="processListitems">
<xsl:param name="items"/>
<xsl:variable name="favoriteColor">
<xsl:text>chartreuse</xsl:text>
</xsl:variable>

<xsl:text> (Your favorite color is now </xsl:text>
<xsl:value-of select="$favoriteColor"/>
<xsl:text>.)
</xsl:text>
<xsl:for-each select="$items">
<xsl:value-of select="position()"/>
<xsl:text>. </xsl:text>
<xsl:value-of select="."/>
<xsl:text>
</xsl:text>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
Output:
Hello! Your favorite number is 23.
Your favorite color is blue.
Here is a moderately long list:
(Your favorite color is now chartreuse.)
1. item 1
2. item 2
3. item 3
4. item 4
5. item 5
6. item 6
7. item 7</source>

== Variable scope==



<source lang="xml">
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>

<ul>
<li>A</li>
<li>B</li>
<li>C</li>
</ul>
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="ul/li"/>
</xsl:template>
<xsl:template match="li">
<xsl:variable name="single-quote">
<xsl:text>'</xsl:text>
</xsl:variable>
<xsl:variable name="two-quotes">
<xsl:text>''</xsl:text>
</xsl:variable>
<xsl:variable name="sub1">
<xsl:call-template name="replace-substring">
<xsl:with-param name="original" select="."/>
<xsl:with-param name="substring" select=""&""/>
<xsl:with-param name="replacement" select=""^&""/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="sub2">
<xsl:call-template name="replace-substring">
<xsl:with-param name="original" select="$sub1"/>
<xsl:with-param name="substring" select=""|""/>
<xsl:with-param name="replacement" select=""^|""/>
</xsl:call-template>
</xsl:variable>
<xsl:call-template name="replace-substring">
<xsl:with-param name="original" select="$sub2"/>
<xsl:with-param name="substring" select="$single-quote"/>
<xsl:with-param name="replacement" select="$two-quotes"/>
</xsl:call-template>
<xsl:text>
</xsl:text>
</xsl:template>
<xsl:template name="replace-substring">
<xsl:param name="original" />
<xsl:param name="substring" />
<xsl:param name="replacement" />
<xsl:choose>
<xsl:when test="contains($original, $substring)">
<xsl:value-of
select="substring-before($original, $substring)" />
<xsl:value-of select="$replacement" />
<xsl:call-template name="replace-substring">
<xsl:with-param name="original"
select="substring-after($original, $substring)" />
<xsl:with-param
name="substring" select="$substring" />
<xsl:with-param
name="replacement" select="$replacement" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$original" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>

</xsl:stylesheet>
Output:
A
B
C</source>

== Variable without initialization==



<source lang="xml">
File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<animal>cat</animal>
<animal>dog</animal>
<animal>cow</animal>
</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:variable name="color"/>
<xsl:template match="//animal">
<xsl:choose>
<xsl:when test="boolean($color)">
<P style="color:{$color}">
<xsl:value-of select="."/>
</P>
</xsl:when>
<xsl:otherwise>
<paragraph>
<xsl:value-of select="."/>
</P>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?>
<paragraph>cat</P>
<paragraph>dog</P>
<paragraph>cow</P></source>

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Admin: 1 версия

в 18:22, 25 мая 2010