comparing XML streams / nodesets

Hi Y'all,

I have a question. I've got an XML document containing the following
nodeset:

<rootnode>
    <childnode>
        <grantchildnode1 />
        <grantchildnode2 />
        <grantchildnode3>
            <grantchildnode31 />
            <grantchildnode32 />
        </grantchildnode3>
    </childnode>
</rootnode>

Now in XSL, I have a variable that declares which entities are allowed into
certain functions like this:

<xsl:variable name="allowednodes">
    <rootnode>
        <childnode>
            <grantchildnode1 />
            <grantchildnode3>
                <grantchildnode32 />
            </grantchildnode3>
        </childnode>
    </rootnode>
</xsl:variable>

when iterating through the main XML document, I need to check if the current
node is allowed to pass through to a function.
Essentially, I'd like to say:

<xslt:if test="count(//*//$allowednodes) != 0" />

This ofcourse doesn't work. Does anyone know if and how I can compare the
trees so I can make accurate decisions about allowing a node ???

Thanks in advance!

Regards,
Martijn.


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list