Question

i am beginner in XSLT and i am using it to transform XML to XML

This is the source XML i receive

Source XML:

<Response>
    <Pax>
        <Id>1</Id>
    </Pax>
    <Pax>
        <Id>2</Id>
    </Pax>
    <Travelers>
        <Traveler>
            <Name>ABC</Name>
        </Traveler>
        <Traveler>
            <Name>XYZ</Name>
        </Traveler>
    </Travelers>
</Response>

I have written below XSLT

XSLT:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">

    <xsl:output method="xml" indent="yes" />

    <xsl:template match="Response">
        <xsl:element name="Root">
                <xsl:apply-templates select="Travelers/Traveler"/>
        </xsl:element>
    </xsl:template>

    <xsl:template match="Traveler">
          <xsl:element name="Person">
             <xsl:element name="PId">
                   <xsl:value-of select="//Pax/Id[position()]" />
             </xsl:element>
             <xsl:element name="Name">
                   <xsl:value-of select="Name" />
             </xsl:element>
          </xsl:element>
    </xsl:template>
</xsl:stylesheet>

Output:

<Root>
  <Person>
    <PId>1</PId>
    <Name>ABC</Name>
  </Person>
  <Person>
    <PId>1</PId>
    <Name>XYZ</Name>
  </Person>
</Root>

I would like to generate below XML output

Expected Output:

<Root>
  <Person>
    <PId>1</PId>
    <Name>ABC</Name>
  </Person>
  <Person>
    <PId>2</PId>
    <Name>XYZ</Name>
  </Person>
</Root>

As shown in above XML the only issue is with PId, it should have value 2.

Please help. Thanks.

Answer 1

Here’s a relatively simple solution.

When this XSLT:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output omit-xml-declaration="yes" indent="yes" />
  <xsl:strip-space elements="*" />

  <xsl:template match="/*">
    <Root>
      <xsl:apply-templates select="Pax" />
    </Root>
  </xsl:template>

  <xsl:template match="Pax">
    <xsl:variable name="vPosition" select="position()" />
    <Person>
      <PId>
        <xsl:value-of select="Id" />
      </PId>
      <Name>
        <xsl:value-of select="/*/Travelers/*[$vPosition]/Name" />
      </Name>
    </Person>
  </xsl:template>
</xsl:stylesheet>

…is applied to the original XML:

<Response>
  <Pax>
    <Id>1</Id>
  </Pax>
  <Pax>
    <Id>2</Id>
  </Pax>
  <Travelers>
    <Traveler>
      <Name>ABC</Name>
    </Traveler>
    <Traveler>
      <Name>XYZ</Name>
    </Traveler>
  </Travelers>
</Response>

…the wanted result is produced:

<Root>
  <Person>
    <PId>1</PId>
    <Name>ABC</Name>
  </Person>
  <Person>
    <PId>2</PId>
    <Name>XYZ</Name>
  </Person>
</Root>