XML/XSLT stylesheet/Comparison operator

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Compare number value

   <source lang="xml">

File: Data.xml <poem author="jm" year="1667">

 <verse>line 1</verse>
 <verse>line 2</verse>
 <verse>line 3</verse>
 <verse>line 4</verse>

</poem>

File: Transform.xslt <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

 version="1.0">
 <xsl:output method="xml" omit-xml-declaration="yes" indent="no" />
 
 <xsl:template match="poem">
   <xsl:choose>
     <xsl:when test="@year < 1638">
       The poem is one of Milton"s earlier works.
     </xsl:when>
     <xsl:when test="@year < 1650">
       The poem is from Milton"s middle period.
     </xsl:when>
     <xsl:when test="@year < 1668">
       The poem is one of Milton"s later works.
     </xsl:when>
     <xsl:when test="@year < 1675">
       The poem is one of Milton"s last works.
     </xsl:when>
     <xsl:otherwise>
       The poem was written after Milton"s death.
     </xsl:otherwise>
   </xsl:choose>
 </xsl:template>
 

</xsl:stylesheet> Output:

       The poem is one of Milton"s later works.
     
</source>
   
  


Comparison operator

   <source lang="xml">

File: Data.xml <?xml version="1.0" encoding="iso-8859-1"?> <booklist>

  <book>
     <title>title 1</title>
     <author>author 1</author>
     <publisher>publisher 1</publisher>
     <isbn>1-11-11111-1</isbn>
     <price>6.99</price>
     <sales>235</sales>
  </book>
  <book>
     <title>title 2</title>
     <author>author 2</author>
     <publisher>publisher 2</publisher>
     <isbn>0 14 018967 X</isbn>
     <price>12.99</price>
     <sales>12</sales>
  </book>

</booklist>

File: Transform.xslt <?xml version="1.0"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

 xmlns:xs="http://www.w3.org/2001/XMLSchema"
 exclude-result-prefixes="xs" version="2.0">
 <xsl:template name="minMax">
   <xsl:param name="nodes" as="node()*" />
   <xsl:param name="min-so-far" select="number("INF")"
     as="xs:double" />
   <xsl:param name="max-so-far" select="number("-INF")"
     as="xs:double" />
   <xsl:choose>
     <xsl:when test="count($nodes) gt 1">
       <xsl:variable name="first">
         <xsl:call-template name="minMax">
           <xsl:with-param name="nodes"
             select="subsequence($nodes, 1, count($nodes) idiv 2)" />
         </xsl:call-template>
       </xsl:variable>
       <xsl:variable name="second">
         <xsl:call-template name="minMax">
           <xsl:with-param name="nodes"
             select="subsequence($nodes, (count($nodes) idiv 2) + 1)" />
         </xsl:call-template>
       </xsl:variable>
       <xsl:document>
         <min>
           <xsl:value-of
             select="if(number($first/min) lt number($second/min))
                                   then $first/min
                                   else $second/min" />
         </min>
         <max>
           <xsl:value-of
             select="if(number($first/max) gt number($second/max))
                                   then $first/max
                                   else $second/max" />
         </max>
       </xsl:document>
     </xsl:when>
     <xsl:when test="count($nodes) eq 1">
       <xsl:document>
         <min>
           <xsl:value-of select="$nodes[1]" />
         </min>
         <max>
           <xsl:value-of select="$nodes[1]" />
         </max>
       </xsl:document>
     </xsl:when>
     <xsl:otherwise>
       <xsl:document>
         <min>INF</min>
         <max>-INF</max>
       </xsl:document>
     </xsl:otherwise>
   </xsl:choose>
 </xsl:template>
 <xsl:template match="/">
   <result>
     <xsl:call-template name="minMax">
       <xsl:with-param name="nodes"
         select="/booklist/book/price" />
     </xsl:call-template>
   </result>
 </xsl:template>

</xsl:stylesheet> Output: <?xml version="1.0" encoding="UTF-8"?><result><min>6.99</min><max>12.99</max></result>

</source>
   
  


if test="position()!=last()"

   <source lang="xml">

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

 <head:header xmlns:head="http://www.domain.ru/namespace/header">
   <title>Email List</title>
   <maintainer>Joe</maintainer>
 </head:header>
 <person type="personal" id="p001">
   <name>person1</name>
   <email>p@hotmail.ru</email>
 </person>
 <person type="work" id="p002">
   <name>person2</name>
   <email>p@hotmail.ru</email>
 </person>
 <person type="personal" id="p003">
   <name>person3</name>
   <email>p3@hotmail.ru</email>
 </person>

</emailList> 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="html" indent="yes" />
  <xsl:template match="/">

Your email list consists of the following individuals: <xsl:for-each select="emailList/person"> <xsl:if test="position()!=last()"> <xsl:apply-templates select="name" />, </xsl:if> <xsl:if test="position()=last()"> <xsl:apply-templates select="name" />.</xsl:if> </xsl:for-each>

  </xsl:template>
  <xsl:template match="name">
     <xsl:value-of select="." />
  </xsl:template>

</xsl:stylesheet> Output:

Your email list consists of the following individuals: person1, person2, person3.

</source>