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Re: Cost of complex match patterns

Subject: Re: Cost of complex match patterns
From: "Andrew Welch" <andrew.j.welch@xxxxxxxxx>
Date: Thu, 14 Aug 2008 09:57:41 +0100
Re:  Cost of complex match patterns
2008/8/13 Michael Kay <mike@xxxxxxxxxxxx>:
> In Saxon, //bar is handled by an index, so exists(//bar) should be quite
> fast after the first time (when the index is built).

What about:

<xsl:template match="foo">
  <xsl:choose>
    <xsl:when test="ancestor::*/@type = 'a'">
     ....
    <xsl:when test="ancestor::*/@type = 'b'">

vs

<xsl:template match="foo[ancestor::*/@type = 'a']">

<xsl:template match="foo[ancestor::*/@type = 'b']">


Would you say the two are roughly equivalent, or are there other
subtle differences?


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

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