in this example I have an order with different typed items. The type is a
QName in an attribute. There are namespaces declared, having the same
prefix as the 'prefix' in the xsi:type attribute. As you can see there are
more namespaces declared as needed (whatever the reason for that case
might be). Now I would like to clean up and just keep the ones that are
'used' in the xsi:type content. The stylesheet actually already does what
I want, but I would like to know whether there might be a better way to do
it, since it looks a little hackish to me.

   <v:item xsi:type="ns4:lostItem"
           xmlns:ns1="http://prods.com/ns1"
           xmlns:ns2="http://prods.com/ns2"
           xmlns:ns3="http://prods.com/ns3">

   <!--identity tranformation; do not copy namespaces; create namespace of
xsi:type-->
   <xsl:template match="*[@xsi:type]">

	Martin Honnen --- MVP Data Platform Development
	http://msmvps.com/blogs/martin_honnen/