Find the number of occurences of a substring in a string in xslt

Question

I am writing a script to find the number of occurrences of a substring in a string in XSLT. It\'s taking too much time when I want to traverse it in more than 200k records.

Answer 1

http://www.xsltfunctions.com/xsl/functx_number-of-matches.html

as documented:

count(tokenize($arg,$pattern)) - 1

I would write it as:

count(tokenize($string,$substring)) - 1

in your case:

count(tokenize('My Name is Rohan and My Home name is also Rohan but one of my firend honey name is also Rohan','Rohan')) - 1

PS: you spelled 'friend' incorrectly.

I tested this method for my own use-case in XSLT version 2.0, It might also work in 1.0 not sure based on the documentation.

Answer 2

I propose:

<xsl:template name="GetNoOfOccurance">
  <xsl:param name="String"/>
  <xsl:param name="SubString"/>
  <xsl:param name="Counter" select="0" />

  <xsl:variable name="sa" select="substring-after($String, $SubString)" />

  <xsl:choose>
    <xsl:when test="$sa != '' or contains($String, $SubString)">
      <xsl:call-template name="GetNoOfOccurance">
        <xsl:with-param name="String"    select="$sa" />
        <xsl:with-param name="SubString" select="$SubString" />
        <xsl:with-param name="Counter"   select="$Counter + 1" />
      </xsl:call-template>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$Counter" />
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

This XSLT 1.0 solution counts substring occurrences by the use of simple and straightforward recursion. No further template is needed, and the result is the wanted one:

<Root>
  <NoofOccurane>3</NoofOccurane>
  <NoofOccurane>0</NoofOccurane>
  <NoofOccurane>1</NoofOccurane>
</Root>

You can remove your <xsl:template name="replace-string"> and drop in my template. No further code change required, the calling convention is the same.