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Re: [xsl] QName as attribute value: save and clean up namespace declarations

Subject: Re: [xsl] QName as attribute value: save and clean up namespace declarations
From: Martin Honnen <Martin.Honnen@xxxxxx>
Date: Mon, 18 Jun 2012 14:00:00 +0200

Heiko Niemann wrote:

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"

I can think of an improvement if you wanted to catch the problem here that the prefix 'ns4' is not declared, in that case I would use e.g.

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

<xsl:variable name="qname" select="resolve-QName(@xsi:type, .)"/>

here and then work with that value of type QName.
That however would give an error like "FONS0004: Namespace prefix 'ns4' has not been declared" with your sample input, which your current code might intentionally avoid.


	Martin Honnen --- MVP Data Platform Development

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