XML/XSLT stylesheet/key
Версия от 18:22, 25 мая 2010; (обсуждение)
Содержание
define and use key
File: Data.xml
<shirts>
<colors>
<color cid="c1">yellow</color>
<color cid="c2">black</color>
<color cid="c3">red</color>
<color cid="c4">blue</color>
<color cid="c5">purple</color>
<color cid="c6">white</color>
<color cid="c7">orange</color>
<color cid="c7">green</color>
</colors>
<shirt colorCode="c4">item 1</shirt>
<shirt colorCode="c1">item 2</shirt>
<shirt colorCode="c6">item 3</shirt>
</shirts>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="text" />
<xsl:key name="colorNumKey" match="color" use="@cid" />
<xsl:template match="colors" />
<xsl:template match="shirt">
<xsl:value-of select="key("colorNumKey",@colorCode)" />
<xsl:text> </xsl:text>
<xsl:apply-templates />
</xsl:template>
</xsl:stylesheet>
Output:
blue item 1
yellow item 2
white item 3
key function with different parameters
File: Data.xml
<shirts>
<colors>
<color cid="c1">yellow</color>
<color cid="c2">black</color>
<color cid="c3">red</color>
<color cid="c4">blue</color>
<color cid="c5">purple</color>
<color cid="c6">white</color>
<color cid="c7">orange</color>
<color cid="c7">green</color>
</colors>
<shirt colorCode="c4">item 1</shirt>
<shirt colorCode="c1">item 2</shirt>
<shirt colorCode="c6">item 3</shirt>
</shirts>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="text" />
<xsl:key name="colorNumKey" match="color" use="@cid" />
<xsl:key name="colorKey" match="color" use="." />
<xsl:variable name="testVar">c4</xsl:variable>
<xsl:variable name="keyName">colorKey</xsl:variable>
<xsl:template match="colors">
Looking up the color name with the color ID:
c3"s color:
<xsl:value-of select="key("colorNumKey","c3")" />
c4"s color:
<xsl:value-of select="key("colorNumKey",$testVar)" />
c8"s color:
<xsl:value-of select="key("colorNumKey","c8")" />
c7"s colors:
<xsl:for-each select="key("colorNumKey","c7")">
<xsl:value-of select="." />
<xsl:text> </xsl:text>
</xsl:for-each>
Looking up the color ID with the color name:
blue"s cid:
<xsl:value-of select="key("colorKey","blue")/@cid" />
black"s cid:
<xsl:value-of select="key($keyName,"black")/@cid" />
gray"s cid:
<xsl:value-of select="key("colorKey","gray")/@cid" />
</xsl:template>
<xsl:template match="shirt" />
</xsl:stylesheet>
Output:
Looking up the color name with the color ID:
c3"s color:
red
c4"s color:
blue
c8"s color:
c7"s colors:
orange green
Looking up the color ID with the color name:
blue"s cid:
c4
black"s cid:
c2
gray"s cid:
match key
File: Data.xml
<?xml version="1.0" encoding="iso-8859-1"?>
<itinerary>
<day number="1">day 1</day>
<day number="2">day 2</day>
<day number="3">day 3</day>
<day number="4">day 4</day>
<day number="5">day 5</day>
<day number="6">day 6</day>
<day number="7">day 7</day>
<day number="8">day 8</day>
<day number="9">day 9</day>
</itinerary>
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"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xsl:import href="itinerary.xsl" />
<xsl:param name="highlight-day" as="xs:integer" required="yes" />
<xsl:key name="day-number" match="day" use="xs:integer(@number)" />
<xsl:template match="key("day-number", $highlight-day)//text()">
<font color="red">
<xsl:value-of select="." />
</font>
</xsl:template>
</xsl:stylesheet>
File: itinerary.xsl
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<head>
<title>Itinerary</title>
</head>
<body>
<center>
<xsl:apply-templates select="//day" />
</center>
</body>
</html>
</xsl:template>
<xsl:template match="day">
<h3>
Day
<xsl:value-of select="@number" />
</h3>
<p>
<xsl:apply-templates />
</p>
</xsl:template>
</xsl:stylesheet>
Use variable in key function
File: Data.xml
<shirts>
<shirt colorCode="c4">item 1</shirt>
<shirt colorCode="c1">item 2</shirt>
<shirt colorCode="c6">item 3</shirt>
</shirts>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="text" />
<xsl:variable name="colorLookupDoc" select="document("Data.xml")" />
<xsl:key name="colorNumKey" match="color" use="@cid" />
<xsl:template match="shirts">
<xsl:apply-templates select="$colorLookupDoc" />
<xsl:apply-templates />
</xsl:template>
<xsl:template match="colors" />
<xsl:template match="shirt">
<xsl:variable name="shirtColor" select="@colorCode" />
<xsl:for-each select="$colorLookupDoc">
<xsl:value-of select="key("colorNumKey",$shirtColor)" />
</xsl:for-each>
<xsl:text> </xsl:text>
<xsl:apply-templates />
<xsl:text></xsl:text>
</xsl:template>
</xsl:stylesheet>