typing the input from within xslt

Hi,

Is there a better way of writing this:

<xsl:variable name="input" as="document-node(schema-element(root))">
   <xsl:document validation="strict">
     <xsl:copy-of select="doc('file:///path/to/xml')"/>
   </xsl:document>
</xsl:variable>

I thought there might be a validation parameter to document(), so it
seems this is the only way to get a typed input when global input
validation is disabled ?

-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/