RE: [xsl] unefficiate xpaths

["Michael Kay" <mhk@xxxxxxxxx>]

> 
> <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 


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