Xslt - How to use Xpath to check Self-Closing tag in xml-CodePudding

Is there any way to check self-closing tag in xslt. How to use XPath for that

Here what the XML file looks like:

<?xml version="1.0" encoding="UTF-8"?>
    <catalog>
     <cd>
        <title>1999 Grammy Nominees</title>
        <title>2000 Grammy Nominees</title>
    </cd>
    <cd><entry/>
        <title>2010 Grammy Nominees</title>
        <title>2011 Grammy Nominees</title>
    </cd>
</catalog

XSLT

<?xml version="1.0" encoding="UTF-8"?>
 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
 <xsl:output method="text" indent="yes" />

 <xsl:template match="/catalog">      
    <xsl:apply-templates/>
 </xsl:template>
  
 <xsl:template match="cd"> 
  <xsl:if test="cd and cd[not(entry)]>
    <xsl:for-each select="cd/title">  
      <fo:block background-color="red">      
          <xsl:value-of select=".">
      </fo:block>
     </xsl:for-each>
   </xsl:if>
</xsl:template>

<xsl:template match="cd/entry"> // cd[entry]
    <xsl:for-each select="cd/title">  
      <fo:block background-color="blue">      
        <xsl:value-of select=".">
       </fo:block>
    </xsl:template>
</xsl:stylesheet>

How can i check the self closing tag <entry /> in xslt

CodePudding user response：

I am guessing (!) you're trying to do something like:

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fo="http://www.w3.org/1999/XSL/Format">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>

<xsl:template match="/catalog"> 
    <fo:root>     
        <xsl:apply-templates/>
    </fo:root>     
</xsl:template>
  
 <xsl:template match="cd"> 
    <xsl:for-each select="title">  
        <fo:block background-color="red">      
            <xsl:value-of select="."/>
        </fo:block>
    </xsl:for-each>
</xsl:template>

<xsl:template match="cd[entry]">
    <xsl:for-each select="title">  
        <fo:block background-color="blue">      
            <xsl:value-of select="."/>
        </fo:block>
    </xsl:for-each>
</xsl:template>

</xsl:stylesheet>

As noted in the comments, the predicate [entry] tests for the existence of a child entry element - whether self-closed or not.

CodePudding user response：

XPath cannot distinguish <entry/> from <entry></entry> - as far as the XPath data model is concerned, they are just two different ways of writing the same thing. Similarly, <entry /> and <entry ></entry > will also be indistinguishable.

You can test for an empty entry element with the predicate entry[not(child::node())]. This will match all four of the above examples. It will also match <entry id="xyz"/> - if you want to exclude attributes you need entry[not(child::node()) and not(@*)].