Perform test then add comment

fixit · October 23rd, 2009, 12:33 PM

I want to test a value of an element then if there the result is true, I want to add a comment just inside the element in the result xml. How can I accomplish this?

For example in the code below I want to return  if person/last <> "Smith"

INPUT

Code:

<root>
<people>
<person>
<first>Jane<first>
<last>Doe</last>
</person>

<person>
<first>Joe<first>
<last>S</last>
</person>

<person>
<first>Bob<first>
<last>Smith</last>
</person>


</people>
</root>

DESIRED OUTPUT

Code:

<root>
<people>
<person>
<first>Jane<first>
<last><!-- "Last name not smith" -->Doe</last>
</person>

<person>
<first>Joe<first>
<last><!-- "Last name not smith" -->S</last>
</person>

<person>
<first>Bob<first>
<last>Smith</last>
</person>

</people>
</root>

Martin Honnen · October 23rd, 2009, 12:39 PM

Code:

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0">
  
  <xsl:template match="person/last[not(. = 'Smith')]">
    <xsl:copy>
      <xsl:comment> "Last name not smith" </xsl:comment>
      <xsl:apply-templates/>
    </xsl:copy>
  </xsl:template>
  
  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>