sorry about that, my misstake
regards,
Aleksander

-----Original Message-----
From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
[mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of william
locksman
Sent: 24. april 2002 17:16
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: RE:  xpath // query


Dear Alex..
The discussion was for an xml structure like this...
<a>
  <b>
   <c> </c>
   <c> </c>
   <c> </c>
  </b>
  <b>
   <c> </c>
   <c> </c>
   <c> </c>
  </b>
</a>

Not the one u have given.. so in this case the discussion was .. 
To reach  C, which is better
a//b//c or a//c..
I think u got the problem wrong


On Wed, 24 Apr 2002 Aleksander Dye wrote :
>I'm not quite sure I got you there....
>Are you saying that select="A//B//C" and select="A//C" will 
>produce the same
>result?
>
>check this xml out:
><?xml version = '1.0' encoding = 'ISO-8859-1'?>
><a>
>    <c>a/c</c>
>    <b>
>       <c>a/b/c</c>
>    </b>
></a>
>
>add the xsl:
><?xml version = '1.0' encoding = 'ISO-8859-1'?>
><xsl:stylesheet 
>xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>version="1.0">
>    <xsl:output method="html" encoding="ISO-8859-1" indent="yes" 
>/>
>
> 	<xsl:template match="/">
> 		1<p><xsl:value-of select="a//c" /></p>
> 		2<p><xsl:value-of select="a//b//c" /></p>
> 	</xsl:template>
></xsl:stylesheet>
>
>And see the result:
> 		1<p>a/c</p>
> 		2<p>a/b/c</p>
>
>Now how is that the same?
>
>Regards,
>Aleksander
>
>-----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>[mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of 
>Michael Kay
>Sent: 24. april 2002 15:42
>To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>Subject: RE:  xpath // query
>
>
> > select="A//C"
> > This would make the processor to search for C that are
> > children of A iin the
> > whole document.. This is definitely not fast
> > select="A//B//C"
> > would make the processor to search for all Cs under all Bs 
>under A.
> > This is slightly better approach..
>
>Fascinating. That's three respondents who were confident enough 
>to reply,
>but guessed wrong!
>
>It feels as if "A//B//C" gives the processor more information to 
>go on, and
>therefore it should be able to reduce the search space. In fact, 
>for a
>clever processor, the search space will be the same, and the only 
>difference
>is that there is an extra (redundant) test to perform. But for a 
>processor
>that adopts a simplistic execution strategy, that is (A//B)//C, 
>the search
>space is definitely larger.
>
>Michael Kay
>Software AG
>home: Michael.H.Kay@xxxxxxxxxxxx
>work: Michael.Kay@xxxxxxxxxxxxxx
>
>
>  XSL-List info and archive:  
>http://www.mulberrytech.com/xsl/xsl-list
>
>
>  XSL-List info and archive:  
>http://www.mulberrytech.com/xsl/xsl-list
>

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