Question

Below is a condensed version of a XML file provided by a different business unit. What I need to get the value of is DriverInputSetGoodStudent.

This is how I am approaching this:

//session/data/policy/line/child::vehicle[position()=1]

That gets me the first vehicle in the XML, so then I will know the ID of the driver of that vehicle based on the GoverningDriverIdInfo/ItemId. Then I need to match that ID with the id property of the driver node. Then get the value of the DriverInputSetGoodStudent node.

<session>
<data>
    <policy>
        <line>
            <driver id="d4A5D51CEC4C14D3C9754A59AE09EFF9B" deleted="0" description="OH Edge, Teresa / 321654654">
                <DriverTrainingInd>N</DriverTrainingInd>
                <DriverInputGoodStudent>N</DriverInputGoodStudent>
                <DriverInputSetDriverTraining>0</DriverInputSetDriverTraining>
                <DriverInputSetGoodStudent>0</DriverInputSetGoodStudent>
                <DriverInputAccidentPreventionTrainingDate>2011-05-05</DriverInputAccidentPreventionTrainingDate>
                <AccidentPreventionCourse>0</AccidentPreventionCourse>
                <AccidentPreventionCoursePreviousValue>0</AccidentPreventionCoursePreviousValue>
                <DriverTrainingPrevValue>0</DriverTrainingPrevValue>
                <DriverOutputGoodStudent>No</DriverOutputGoodStudent>
            </driver>
            <vehicle id="v1CFDF4006D7C41D8B8C8A510E4C5C2E1" deleted="0" description="TYTA CAMRY BASE/LE/SE/XLE, 2010, 4T1BF3EK3AU522985">
                <VehicleInputPrimaryDriver>d4A5D51CEC4C14D3C9754A59AE09EFF9B</VehicleInputPrimaryDriver>
                <GoverningDriverIdInfo>
                  <ItemIdList>d4A5D51CEC4C14D3C9754A59AE09EFF9B</ItemIdList>
                  <ItemId>d4A5D51CEC4C14D3C9754A59AE09EFF9B</ItemId>
                </GoverningDriverIdInfo>
                <PrimaryDriverID>d4A5D51CEC4C14D3C9754A59AE09EFF9B</PrimaryDriverID>
                <VehicleGoodStudent>No</VehicleGoodStudent>
                <VehicleDriverTraining>No</VehicleDriverTraining>
            </vehicle>
        <line>
    <policy>
<data>
<session>

I see that the code didn’t paste in the quite correctly, there is an “end session” tag that isn’t appearing in the code block. Thanks in advance for your help.

Answer 1

If you have the id somewhere :

<xsl:variable name="driverID" select="data/policy/line/child::vehicle[position()=1]/GoverningDriverIdInfo/ItemId"/>

You can simply use it to find the desired node :

<xsl:variable name="targetNode" select="data/policy/line/driver[@id = $driverID]/DriverInputSetGoodStudent"/>

Update answer :

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

  <xsl:template match="/">
    <xsl:for-each select="//session">
      <xsl:message terminate="no">
        <xsl:value-of select="data/policy/line/driver[@id = current()/data/policy/line/child::vehicle[position()=1]/GoverningDriverIdInfo/ItemId]/DriverInputSetGoodStudent"/>
      </xsl:message>
    </xsl:for-each>
  </xsl:template>
</xsl:stylesheet>

Output :

 [xslt] : Warning! 0

Where 0 is the value of your desired node. No variables used. I thought it was clear how to combine the two variables which were used only for proving a concept.