CODEWITHSUNDEEP
xslt
srinivas
srinivas

Reputation: 61

How to replace a tag with another tag in xml using xsl

My xml file looks like below.

<rule>  
  <name>86</name>
  <ruleId>100</ruleId>
  <ruleVersion>1.0</ruleVersion>
  <brlVersion>1.0</brlVersion>
</rule>

I need to replace name with brlName and i need to add another tag as drlName.The output should looks like below.

<rule>  
  <brlName>86</brlName>
  <ruleId>100</ruleId>
  <ruleVersion>1.0</ruleVersion>
  <brlVersion>1.0</brlVersion>
  <drlName>86_1.0</drlName>
</rule>

Please help me with corresponding xsl to get desired output. Appreciated your help!

Upvotes: 6

Views: 11584

Answers (2)

Dimitre Novatchev
Dimitre Novatchev

Reputation: 243599

This transformation:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

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

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

 <xsl:template match="/*/*[last()]">
  <xsl:call-template name="identity"/>
   <drlName>86_1.0</drlName>
 </xsl:template>
</xsl:stylesheet>

when applied on the provided XML document:

<rule>
    <name>86</name>
    <ruleId>100</ruleId>
    <ruleVersion>1.0</ruleVersion>
    <brlVersion>1.0</brlVersion>
</rule>

produces the wanted, correct result:

<rule>
   <brlName>86</brlName>
   <ruleId>100</ruleId>
   <ruleVersion>1.0</ruleVersion>
   <brlVersion>1.0</brlVersion>
   <drlName>86_1.0</drlName>
</rule>

Explanation:

  1. Using and overriding the identity rule/template -- the most fundamental and powerful XSLT design pattern.

  2. Override on any element named name and creating an element named brlName (rename).

  3. Override on the last last element child of the top element. Calling the identity rule by name for this node (copying) and then creating an element named drlName with a specific text-node child as per the requirements.

Using and overriding the identity rule/template is the most fundamental and powerful XSLT design pattern. You can learn more about it here.

Upvotes: 3

Emiliano Poggi
Emiliano Poggi

Reputation: 24836

This is the typical task for the identity transform (the first template rule in the transform below). Just two overrides (the last two rules).

XSLT 1.0 tested under Saxon 6.5.5

<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output omit-xml-declaration="yes" indent="yes"/>
    <xsl:strip-space elements="*"/>

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

    <xsl:template match="name">
        <brlName><xsl:value-of select="."/></brlName>
    </xsl:template>

    <xsl:template match="brlVersion">
        <xsl:copy-of select="."/>
        <drlName><xsl:value-of select="preceding-sibling::name"/>_1.0</drlName>
    </xsl:template>

</xsl:stylesheet>

Upvotes: 6

Related Questions