XSL - Rename element with value-CodePudding

Just tryng to learn XSLT. Please refer Input and Output documents Input xml is only a potion of the document. There are more record levels in this document

<?xml version="1.0" encoding="UTF-8"?>
<record level="1">
   <GROUP>ABC</GROUP>
   <NAME>1100000000111</NAME>
</record>

Desired output I would like to rename <record level="1"> to <record_level1>

<?xml version="1.0" encoding="UTF-8"?>
<record_level1>
   <GROUP>ABC</GROUP>
   <NAME>1100000000111</NAME>
</record_level1>

CodePudding user response：

If you start with an identity transform to copy all content as the default behavior, then you can add a specialized template to match the record elements that have a @level attribute. Inside that template, create an element with the name concatenating the element name with the attribute name and value:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
    <xsl:output method="xml" indent="yes"/>

    <xsl:template match="@* | node()">
        <xsl:copy>
            <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
    </xsl:template>
    
    <xsl:template match="record[@level]">
        <xsl:element name="{concat(name(), '_level', @level)}">
            <xsl:apply-templates select="node()"/>
        </xsl:element>
    </xsl:template>
    
</xsl:stylesheet>

Note the {} curly braces used inside of the element name attribute. It would otherwise expect a string literal. The attribute value template allows you to execute code to construct that name value, using the concat() function.