Grouping and counting in XSLT 1.0

问题

I have input XML:

<?xml version="1.0" encoding="UTF-8"?>
<root>
   <FT>Paket</FT>
   <FT>Parti</FT>
   <FT>Paket</FT>
   <FT>Styche</FT>
   <FT>Styche</FT>
</root>

And I want my output to display such as -

Paket   2
Parti   1
Styche  2

Its is grouping the value of elements and the no. is showing the total count of the value being repeated. Like Paket is indicating the value and it is being repeated 2 times in the XML.

How the logic will work?

回答1:

In XSLT 1.0, using Muenchian grouping:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text" indent="yes"/>
  <xsl:key name="k" match="FT" use="."/>

  <xsl:template match="/*">
    <xsl:apply-templates select="FT[generate-id() = generate-id(key('k', .))]"/>
  </xsl:template>

  <xsl:template match="FT">
    <xsl:value-of select="concat(., ' ', count(key('k', .)))"/>
    <xsl:text>&#xa;</xsl:text>
  </xsl:template>

</xsl:stylesheet>

Output: