XSLT Transformation that add namespace prefix doesn't copy attributes - xslt

Question

I have a requirement to add a namespace prefix to all my xml elements.
I have a working xslt for this but unfortunately it doesn't copy the attributes. What do I need to change to also copy these attributes.
This my code:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:ns0="http://ns.hr-xml.org/2007-04-15" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:template match="*">
<xsl:element name="ns0:{local-name()}">
<xsl:apply-templates select="*|node()" />
</xsl:element>
</xsl:template>
</xsl:stylesheet>
The input XML is this:
<HumanResource schemaLocation="http://ns.hr-xml.org/2007-04-15 ../HumanResource.xsd">
<HumanResourceId idOwner="StaffingCompany">
<IdValue>123COMP</IdValue>
</HumanResourceId>
<HumanResourceId idOwner="StaffingCustomer">
<IdValue>456CUST</IdValue>
<!--double hre-id, due fms wnr-code swap-->
</HumanResourceId>
<HumanResourceStatus status="x:Assigned"/>
<ReferenceInformation>
<StaffingSupplierId idOwner="StaffingCustomer">
<IdValue>105964</IdValue>
</StaffingSupplierId>
<StaffingCustomerId idOwner="StaffingCompany">
<IdValue>MIN0000612</IdValue>
</StaffingCustomerId>
<StaffingCustomerId idOwner="StaffingCustomer">
<IdValue>ELI</IdValue>
</StaffingCustomerId>
<StaffingSupplierOrgUnitId idOwner="StaffingCompany">
<IdValue>2606379</IdValue>
</StaffingSupplierOrgUnitId>
<StaffingCustomerOrgUnitId idOwner="StaffingCustomer">
<IdValue>ELI</IdValue>
</StaffingCustomerOrgUnitId>
</ReferenceInformation>
<ResourceInformation>
<PersonName>
<FormattedName>J</FormattedName>
<LegalName>C</LegalName>
<GivenName>J</GivenName>
<PreferredGivenName>J</PreferredGivenName>
<MiddleName>C.J.</MiddleName>
<FamilyName primary="true"></FamilyName>
</PersonName>
<EntityContactInfo>
<EntityName></EntityName>
<PersonName>
<FormattedName>Liesbeth Kramer</FormattedName>
</PersonName>
<ContactMethod>
<Telephone>
<FormattedNumber>070-3102150</FormattedNumber>
</Telephone>
</ContactMethod>
</EntityContactInfo>
<PostalAddress>
<CountryCode>NL</CountryCode>
<PostalCode></PostalCode>
<Municipality></Municipality>
<DeliveryAddress>
<AddressLine></AddressLine>
<StreetName></StreetName>
<BuildingNumber></BuildingNumber>
</DeliveryAddress>
</PostalAddress>
</ResourceInformation>
<Profile/>
<Preferences/>
<UserArea>
<ns2:HumanResourceAdditionalNL xmlns:ns2="http://ns.setu.nl/2008-01">
<ns2:BirthDate>1961-07-13</ns2:BirthDate>
<ns2:Sex>female</ns2:Sex>
</ns2:HumanResourceAdditionalNL>
</UserArea>
</HumanResource>
My result with my code looks like this:
<?xml version='1.0' ?>
<ns0:HumanResource xmlns:ns0="http://ns.hr-xml.org/2007-04-15">
<ns0:HumanResourceId>
<ns0:IdValue>123COMP</ns0:IdValue>
</ns0:HumanResourceId>
<ns0:HumanResourceId>
<ns0:IdValue>456CUST</ns0:IdValue>
</ns0:HumanResourceId>
<ns0:HumanResourceStatus/>
<ns0:ReferenceInformation>
As you can see, the ns0: is added ok but I lost the attributes.

Answer 1

You have lost the attributes because you have no code to select them. You currently do <xsl:apply-templates select="*|node()" />, but * select elements, and node() selects elements, text nodes, comments and processing instructions. You need to change it to this...
<xsl:apply-templates select="#*|node()" />
You would then need a separate template to match attributes and copy them.
<xsl:template match="#*">
<xsl:copy />
</xsl:template>
Try this XSLT
<xsl:stylesheet version="1.0" xmlns:ns0="http://ns.hr-xml.org/2007-04-15" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:template match="*">
<xsl:element name="ns0:{local-name()}">
<xsl:apply-templates select="#*|node()" />
</xsl:element>
</xsl:template>
<xsl:template match="#*">
<xsl:copy />
</xsl:template>
</xsl:stylesheet>
Alternatively, you could use xsl:copy-of to copy the attributes. Try this XSLT too
<xsl:stylesheet version="1.0" xmlns:ns0="http://ns.hr-xml.org/2007-04-15" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" />
<xsl:template match="*">
<xsl:element name="ns0:{local-name()}">
<xsl:copy-of select="#*" />
<xsl:apply-templates />
</xsl:element>
</xsl:template>
</xsl:stylesheet>
Note that <xsl:apply-templates /> is short-hand for <xsl:apply-templates select="node()" />