Subject: Re: RE: [xsl] xpath // query From: "william locksman" <vsd18@xxxxxxxxxxxxxx> Date: 24 Apr 2002 15:16:04 -0000 |
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>
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: [xsl] 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
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
RE: [xsl] xpath // query, Michael Kay | Thread | RE: RE: [xsl] xpath // query, Aleksander Dye |
Re: [xsl] xpath // query, Thomas B. Passin | Date | RE: [xsl] folder tree representatio, "Braumüller, Hans" |
Month |