XML/XSLT stylesheet/key — различия между версиями

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Текущая версия на 11:26, 26 мая 2010

define and use key

   <source lang="xml">

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
</source>


key function with different parameters

   <source lang="xml">

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:
   
 
 
 
</source>


match key

   <source lang="xml">

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()">
   
     <xsl:value-of select="." />
   
 </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>

         <xsl:apply-templates select="//day" />

     </body>
   </html>
 </xsl:template>
 <xsl:template match="day">

Day <xsl:value-of select="@number" />

<xsl:apply-templates /> 

 </xsl:template>

</xsl:stylesheet> 

</source>


Use variable in key function

   <source lang="xml">

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> 

</source>
Источник — «http://wbex.ru/index.php?title=XML/XSLT_stylesheet/key&oldid=10339»