Question

My input XML consists of the following,

<root>
    <entry>
        <type>U</type>
        <value>111</value>
    </entry>
    <entry>
        <type>X</type>
        <value>222</value>
    </entry>
    <entry>
        <type>E</type>
        <value>333</value>
    </entry>
    <entry>
        <type>Q</type>
        <value>444</value>
    </entry>
</root>

Output i required,
<ROOT>
<ENTRY>
<SLNO>1</SLNO>
<VALUE>111</VALUE>
</ENTRY>
<ENTRY>
<VALUE>222</VALUE>
</ENTRY>
<ENTRY>
<VALUE>333</VALUE>
</ENTRY>
<ENTRY>
<SLNO>2</SLNO>
<VALUE>444</VALUE>
</ENTRY>
</ROOT>

I need to parse all the records, but need to put serial number for records whose type is not X and E.

I have written a for-each to for the same and used ´position()´ to display a serial number with condtion for type E and X.
So I’m getting serial number as 1, 4 instead of 1, 2 because of ´postion()´.

I thought of creating a global variable and increment it inside my if block, but XSLT 1.0 will not allow to increment variable values.

How can I achieve this?

My sample XSL code is asl follows,

<xsl:for-each select="/ROOT/ENTRY">
    <xsl:if test="(TYPE != 'X') and (TYPE != 'E')">             
        <xsl:text><![CDATA[<SLNO>]]></xsl:text>
        <xsl:number value="position()"/>
        <xsl:text><![CDATA[</SLNO>]]></xsl:text>
    </xsl:if>
    <!-- Printing remaining values -->
</xsl:for-each>

Please help.

Answer 1

Instead of using position(), you could count the number of preceding type elements in your XML

<xsl:value-of select="count(preceding::type[. != 'X' and . != 'E']) + 1" />

Additionally, you can simplify your current XSLT by matching the type element directly, rather than the entry element, and then just replace it with the new slno element.

<xsl:template match="type[. != 'X' and . != 'E']">

For example, try the following XSLT

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

   <xsl:template match="type[. != 'X' and . != 'E']">
      <slno><xsl:value-of select="count(preceding::type[. != 'X' and . != 'E']) + 1" /></slno>
   </xsl:template>

   <xsl:template match="type" />

   <xsl:template match="@*|node()">
      <xsl:copy>
         <xsl:apply-templates select="@*|node()"/>
      </xsl:copy>
   </xsl:template>
</xsl:stylesheet>

When applied to your sample XML, the following is output

<root>
   <entry>
      <slno>1</slno>
      <value>111</value>
   </entry>
   <entry>
      <value>222</value>
   </entry>
   <entry>
      <value>333</value>
   </entry>
   <entry>
      <slno>2</slno>
      <value>444</value>
   </entry>
</root>

Note, I am using all lower-case element names here. I wasn’t sure from your question if you wanted to translate them into upper-case or not.