I have an XSLT transform which given some xml, I would like it to change the xml's namespace URI.

Input XML:

<given xmlns="http://www.sample.co.uk/version/6">
  <child>content here</child>
</given>

XSLT:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>

<xsl:template match="/node()[1]" >
    <xsl:element name="{local-name()}" namespace="{concat(substring-before(namespace-uri(), '/6'),'/7')}" >
        <xsl:apply-templates />
    </xsl:element>
</xsl:template>

<xsl:template match="*">
    <xsl:element name="{local-name()}">
        <xsl:apply-templates select="@*|node()"/>
    </xsl:element>
</xsl:template>

</xsl:stylesheet>

Output XML:

<given xmlns="http://www.sample.co.uk/version/7">
  <child xmlns="">content here</child>
</given>

The XSLT transform works as expected but, as you can see, it has included an empty namespace in the child node <child xmlns="">. I would like the output child node to just be <child>. How can I achieve this?

Thanks in advance, PM

If the root element has xmlns="http://www.sample.co.uk/version/6" then that namespace applies to all child and descendant elements so basically you need to make sure your XSLT changes the namespace of all elements doing e.g.

<xsl:template match="*">
  <xsl:element name="{local-name()}" namespace="{concat(substring-before(namespace-uri(), '/6'),'/7')}" >
    <xsl:apply-templates/>
  </xsl:element>
</xsl:template>