<xsl:for-each
select="//clients/client[count(commissions/commission[earnerId
= //earners/earner[type = $rptType]/id]) = 0 and
<website=$prodClass)]">
I wonder if you really mean "//earners". Are you interested only in
earners that are descendants of the commission you are testing? In that
case, use ".//earners".
If you are interested in testing against all earners in the document,
try setting a variable
<xsl:variable name="e" select="//earners/earner[type = $rptType]/id"/>
At present your performance is O(n**2), because //x typically involves a
serial scan of the document. With the above change, it should become
O(n) (assuming that type=$rptType selects a single element). For even
faster performance, you can always replace
//EXPR[VAL=C]
with
<xsl:key name="k" match="EXPR" use="VAL"/>
then
key('k', C)
Michael Kay
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list