xslt copy-of to different namespace in the resulting document - xslt

Question

In my xslt code, I can use copy-of to copy the element and its descendant nodes, but the catch is that the resulting schema though has the same structure has a different namespace. Is there any way I can still use copy-of and accomplish this? I am using XSLT 2.0
Following is the example of Source and Target XMLs, the cd elements can be copied using copy-of in XSL, but they have different namespaces.
Source XML
<catalog xmlns="namespace1">
<cd>
<title>Empire Burlesque</title>
<artist>Bob Dylan</artist>
<country>USA</country>
<company>Columbia</company>
<price>10.90</price>
<year>1985</year>
</cd>
<cd>
<title>Hide your heart</title>
<artist>Bonnie Tyler</artist>
<country>UK</country>
<company>CBS Records</company>
<price>9.90</price>
<year>1988</year>
</cd>
</catalog>
Target XML
<books xmlns="namespace2">
<cd>
<title>Empire Burlesque</title>
<artist>Bob Dylan</artist>
<country>USA</country>
<company>Columbia</company>
<price>10.90</price>
<year>1985</year>
</cd>
<cd>
<title>Hide your heart</title>
<artist>Bonnie Tyler</artist>
<country>UK</country>
<company>CBS Records</company>
<price>9.90</price>
<year>1988</year>
</cd>
</books>
Used Martin Honnen's idea and created this
<xsl:template name="changeNamespace">
<xsl:param name="nodes"/>
<xsl:for-each select="$nodes">
<xsl:choose>
<xsl:when test="count(child::*)>0">
<xsl:element name="newnamespace:{local-name()}">
<xsl:call-template name="changeNamespace">
<xsl:with-param name="nodes" select="./child::*"/>
</xsl:call-template>
</xsl:element>
</xsl:when>
<xsl:otherwise>
<xsl:element name="newnamespace:{local-name()}">
<xsl:value-of select="."/>
</xsl:element>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>

Answer 1

You can't use xsl:copy or xsl:copy-of to change the namespace of a node, you need to transform the nodes with e.g.
<xsl:template match="ns1:*">
<xsl:element name="ns2:{local-name()}">
<xsl:apply-templates select="#* | node()"/>
</xsl:element>
</xsl:template>
which then assumes you have e.g. <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ns1="source-namespace" xmlns:ns2="target-namespace" version="1.0"> in scope or you can of course also put the target namespace into the xsl:element:
<xsl:template match="ns1:*">
<xsl:element name="ns2:{local-name()}" namespace="target-namespace">
<xsl:apply-templates select="#* | node()"/>
</xsl:element>
</xsl:template>
If you have attributes where you need to change the namespace you need to set up a similar template for attribute nodes.
With XSLT 2.0 you can simplify the stylesheet structure with e.g.
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xpath-default-namespace="namespace1" xmlns="namespace2" version="2.0">
<xsl:template match="*">
<xsl:element name="{local-name()}">
<xsl:apply-templates select="#* | node()"/>
</xsl:element>
</xsl:template>