Values are not present in transformed xml in xslt transformation - xslt

Question

I am trying to transform one xml using xslt but I am getting empty xml nodes. Please let me know what I am missing.
My source xml is:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:ProcessPartsOrder xmlns="http://www.host.com/ERP/Sales/Entities" xmlns:ns2="http://www.host.com/ERP/Sales/ProcessPartsOrder" xmlns:ns4="http://www.host.com/ERP/Sales/ValueObjects" xmlns:ns3="http://www.host.com/ERP/Sales/Aggregates/PartsOrder">
<ns2:MessageHeader>
<CultureCode>en-US</CultureCode>
<SenderNameCode>S3</SenderNameCode>
<CreationDateTime>2019-03-19T22:48:16</CreationDateTime>
<BODID>e27c5244-4f18-4343-a15f-e509b8a75802</BODID>
</ns2:MessageHeader>
</ns2:ProcessPartsOrder>
I want to transform into below format:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:proc="http://www.host.com/ERP/Sales/ProcessPartsOrder" xmlns:ent="http://www.host.com/ERP/Sales/Entities" xmlns:par="http://www.host.com/ERP/Sales/Aggregates/PartsOrder" xmlns:val="http://www.host.com/ERP/Sales/ValueObjects">
<soapenv:Header/>
<soapenv:Body>
<proc:ProcessPartsOrder>
<proc:MessageHeader>
<ent:CultureCode>en-US</ent:CultureCode>
<ent:SenderNameCode>S3</ent:SenderNameCode>
<ent:CreationDateTime>2013-01-23T12:41:36-05:00</ent:CreationDateTime>
<ent:BODID>e27c5244-4f18-4343-a15f-e509b8a75802</ent:BODID>
</proc:MessageHeader>
</proc:ProcessPartsOrder>
</soapenv:Body>
</soapenv:Envelope>
My xslt looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ns2="http://www.host.com/ERP/Sales/CustomerOrderManagement"
xmlns:ns3="http://www.host.com/ERP/Sales/Aggregates/PartsOrder"
xmlns:ns4="http://www.host.com/ERP/Sales/ValueObjects"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="ns2 ns3 ns4 xs">
<xsl:output method="xml" encoding="UTF-8" indent="yes"/>
<xsl:template match="/*">
<soapenv:Envelope xmlns="http://www.host.com/ERP/Sales/CustomerOrderManagement"
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:proc="http://www.host.com/ERP/Sales/ProcessPartsOrder"
xmlns:ent="http://www.host.com/ERP/Sales/Entities"
xmlns:par="http://www.host.com/ERP/Sales/Aggregates/PartsOrder"
xmlns:val="http://www.host.com/ERP/Sales/ValueObjects">
<soapenv:Header/>
<soapenv:Body>
<proc:ProcessPartsOrder>
<proc:MessageHeader>
<ent:CultureCode>
<xsl:value-of select="/ns2:ProcessPartsOrder/ns2:MessageHeader/CultureCode"/>
</ent:CultureCode>
<ent:SenderNameCode>
<xsl:value-of select="ns2:ProcessPartsOrder/ns2:MessageHeader/SenderNameCode"/>
</ent:SenderNameCode>
<ent:CreationDateTime>
<xsl:value-of select="ns2:ProcessPartsOrder/ns2:MessageHeader/CreationDateTime"/>
</ent:CreationDateTime>
<ent:BODID>
<xsl:value-of select="ns2:ProcessPartsOrder/ns2:MessageHeader/BODID"/>
</ent:BODID>
</proc:MessageHeader>
</proc:ProcessPartsOrder>
</soapenv:Body>
</soapenv:Envelope>
</xsl:template>
</xsl:stylesheet>
All I am getting an expected xml with empty values.
I believe I am missing something for which I need help.
Thanks.

Answer 1

You were giving the XPaths to the values a different namespace than in the source. Hence they return empty. The namespace itself differs.
In your source you define the default namespace as
xmlns="http://www.host.com/ERP/Sales/Entities"
But the ns2 namespace in the XSLT is defined as
xmlns:ns2="http://www.host.com/ERP/Sales/CustomerOrderManagement"
Or course you have to use the same namespace in the XPath expression of the XSLT. There you defined the first namespace as proc. So change your template to the following
<xsl:template match="/">
<soapenv:Envelope xmlns="http://www.host.com/ERP/Sales/CustomerOrderManagement"
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:proc="http://www.host.com/ERP/Sales/ProcessPartsOrder"
xmlns:ent="http://www.host.com/ERP/Sales/Entities"
xmlns:par="http://www.host.com/ERP/Sales/Aggregates/PartsOrder"
xmlns:val="http://www.host.com/ERP/Sales/ValueObjects">
<soapenv:Header/>
<soapenv:Body>
<proc:ProcessPartsOrder>
<proc:MessageHeader>
<ent:CultureCode>
<xsl:value-of select="/proc:ProcessPartsOrder/proc:MessageHeader/ent:CultureCode"/>
</ent:CultureCode>
<ent:SenderNameCode>
<xsl:value-of select="/proc:ProcessPartsOrder/proc:MessageHeader/ent:SenderNameCode"/>
</ent:SenderNameCode>
<ent:CreationDateTime>
<xsl:value-of select="/proc:ProcessPartsOrder/proc:MessageHeader/ent:CreationDateTime"/>
</ent:CreationDateTime>
<ent:BODID>
<xsl:value-of select="/proc:ProcessPartsOrder/proc:MessageHeader/ent:BODID"/>
</ent:BODID>
</proc:MessageHeader>
</proc:ProcessPartsOrder>
</soapenv:Body>
</soapenv:Envelope>
</xsl:template>
Or, another approach, you can add the namespace
xmlns:ent="http://www.host.com/ERP/Sales/Entities"
to the stylesheet element and add a modified identity template for the ent: elements which changes the namespace of each copied element:
<xsl:template match="ent:*">
<xsl:element name="ent:{local-name()}" namespace="http://www.host.com/ERP/Sales/Entities">
<xsl:apply-templates select="#*|node()"/>
</xsl:element>
</xsl:template>
Then your main template could be simplified to
<xsl:template match="/">
<soapenv:Envelope xmlns="http://www.host.com/ERP/Sales/CustomerOrderManagement"
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:proc="http://www.host.com/ERP/Sales/ProcessPartsOrder"
xmlns:ent="http://www.host.com/ERP/Sales/Entities"
xmlns:par="http://www.host.com/ERP/Sales/Aggregates/PartsOrder"
xmlns:val="http://www.host.com/ERP/Sales/ValueObjects">
<soapenv:Header/>
<soapenv:Body>
<proc:ProcessPartsOrder>
<proc:MessageHeader>
<xsl:apply-templates select="/proc:ProcessPartsOrder/proc:MessageHeader/ent:*"/>
</proc:MessageHeader>
</proc:ProcessPartsOrder>
</soapenv:Body>
</soapenv:Envelope>
</xsl:template>
</xsl:stylesheet>
To also copy attributes, add an unmodifed identity template.