XML Tutorial/XSLT stylesheet/generate id

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Assign value from generate-id(.) to attribute

   <source lang="xml">

File: Data.xml <?xml version="1.0"?> <greet> 

<greeting xml:lang="en">Welcome</greeting>
<greeting xml:lang="fr">Bienvenue</greeting>
<greeting xml:lang="es">Bienvenido</greeting>
<greeting xml:lang="de">Willkommen</greeting>

</greet> 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:output method="xml" indent="yes" />
 <xsl:output doctype-system="greeting.dtd" />
 <xsl:template match="greet">
   <xsl:element name="greeting">
     <xsl:apply-templates select="greeting" />
   </xsl:element>
 </xsl:template>
 <xsl:template match="greeting">
   <xsl:element name="welcome">
     <xsl:attribute name="xml:lang"><xsl:value-of
         select="@xml:lang" />
     </xsl:attribute>
     <xsl:attribute name="id"><xsl:value-of
         select="generate-id(.)" />
     </xsl:attribute>
     <xsl:value-of select="current()" />
   </xsl:element>
 </xsl:template>

</xsl:stylesheet> Output: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE greeting 

 SYSTEM "greeting.dtd">

<greeting> 

  <welcome xml:lang="en" id="d2e3">Welcome</welcome>
  <welcome xml:lang="fr" id="d2e6">Bienvenue</welcome>
  <welcome xml:lang="es" id="d2e9">Bienvenido</welcome>
  <welcome xml:lang="de" id="d2e12">Willkommen</welcome>

</greeting></source>


for-each select=/addressbook/address[generate-id(.)=generate-id(key(zipcodes, zip)[1])]

   <source lang="xml">

File: Data.xml <?xml version="1.0"?> <addressbook> 

 <address>
   <name>
     <title>Mr.</title>
     <first-name>Doris</first-name>
     <last-name>Smith</last-name>
   </name>
   <street>1234 Main Street</street>
   <city>Sheboygan</city>
   <state>WI</state>
   <zip>48392</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="html"/>
 <xsl:key name="zipcodes" match="address" use="zip"/>
 <xsl:template match="/">
   <html>
     <head>
       <title>Customers grouped by Zip code</title>
     </head>
     <body>
<xsl:for-each select="/addressbook/address[generate-id(.)=generate-id(key("zipcodes", zip)[1])]"> <xsl:sort select="zip"/> <xsl:for-each select="key("zipcodes", zip)"> <xsl:sort select="name/last-name"/> <xsl:sort select="name/first-name"/> <xsl:if test="position() = 1"> </xsl:if> </xsl:for-each> </xsl:for-each> 
                   <xsl:text>Zip code </xsl:text>
                   

                   
                     <xsl:value-of select="zip"/>
                   
                   

                   <xsl:value-of select="city"/>
                   <xsl:text>, </xsl:text>
                   <xsl:value-of select="state"/>

                 <xsl:value-of select="name/first-name"/>
                 <xsl:text> </xsl:text>
                 
                   <xsl:value-of select="name/last-name"/>
                 

                 <xsl:value-of select="street"/>

     </body>
   </html>
 </xsl:template>

</xsl:stylesheet> Output: <html> 

  <head>
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
     <title>Customers grouped by Zip code</title>
  </head>
  <body>
Zip code
48392
Sheboygan, WI 		Doris Smith 1234 Main Street 
  </body>

</html></source>


generate-id() generates id conforming to XML spec

   <source lang="xml">

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

   <AAA name="top">
     <BBB pos="1" val="bbb">11111</BBB>
     <BBB>22222</BBB>
   </AAA>
   <AAA name="bottom">
     <BBB>33333</BBB>
     <BBB>44444</BBB>
   </AAA>

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="/">

       
         <xsl:text>generate-id(//AAA)  : </xsl:text>
       
       <xsl:value-of select="generate-id(//AAA)  "/>

       
         <xsl:text>generate-id(//BBB)  : </xsl:text>
       
       <xsl:value-of select="generate-id(//BBB)  "/>

       
         <xsl:text>generate-id(//AAA[1])  : </xsl:text>
       
       <xsl:value-of select="generate-id(//AAA[1])  "/>

       
         <xsl:text>generate-id(//*[1])  : </xsl:text>
       
       <xsl:value-of select="generate-id(//*[1])  "/>

       
         <xsl:text>generate-id(//xslTutorial/*[1])  : </xsl:text>
       
       <xsl:value-of select="generate-id(//xslTutorial/*[1])  "/>

   </xsl:template>

</xsl:stylesheet> Output:

<?xml version="1.0" encoding="UTF-8"?>
generate-id(//AAA)  : d2e3
generate-id(//BBB)  : d2e5
generate-id(//AAA[1])  : d2e3
generate-id(//*[1])  : d2e1
generate-id(//xslTutorial/*[1])  :
</source>


uses generate-id() to add id to all elements in source XML.

   <source lang="xml">

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

   <AAA name="top">
     <BBB pos="1" val="bbb">11111</BBB>
     <BBB>22222</BBB>
   </AAA>
   <AAA name="bottom">
     <BBB>33333</BBB>
     <BBB>44444</BBB>
   </AAA>

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="*">
     <xsl:copy>
       <xsl:attribute name="id"><xsl:value-of select="generate-id()"/></xsl:attribute>
       <xsl:for-each select="@*">
         <xsl:attribute name="{name()}"><xsl:value-of select="."/></xsl:attribute>
       </xsl:for-each>
       <xsl:apply-templates/>
     </xsl:copy>
   </xsl:template>

</xsl:stylesheet> Output: <?xml version="1.0" encoding="UTF-8"?> 

   <AAA id="d2e3" name="top">
     <BBB id="d2e5" pos="1" val="bbb">11111</BBB>
     <BBB id="d2e8">22222</BBB>
   </AAA>
   <AAA id="d2e12" name="bottom">
     <BBB id="d2e14">33333</BBB>
     <BBB id="d2e17">44444</BBB>
   </AAA>

</source>

Источник — «http://wbex.ru/index.php?title=XML_Tutorial/XSLT_stylesheet/generate_id&oldid=10797»