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Re: XPath: ancestor:: axis vs. use of ../../../ etc.

Subject: Re: XPath: ancestor:: axis vs. use of ../../../ etc.
From: Jarkko.Moilanen@xxxxxx
Date: Sat, 8 Mar 2003 10:22:44 +0200
xpath grandparent
Lainaus David Carlisle <davidc@xxxxxxxxx>:

| >> My basic question: what is going on that 
| 	A.	"../../@name" 
| is so different from 
| 	B.	"../../../span-fill/@name"
| ?

Concider the source as a tree where you jump around (Thanks for this 
idea, Ken =)). Once you state that ".." you will go to the parent element. 
If you would state just "." you would jump on your self axis.

A simple example:
When you would have somethign like this:
<?xml version ="1.0"?>
 <elem>value 1
  <subelem>value 1.1</subelem>
 <elem>value 2
  <subelem>value 2.1</subelem>

and you would apply this stylesheet:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" encoding="iso-8859-1" indent="yes" /> 
<xsl:template match="Elements">
 <xsl:for-each select="elem/subelem">
 <p><xsl:value-of select="."/></p>
 <p><xsl:value-of select="parent::*"/></p>

 <xsl:for-each select="elem/subelem">
 <p><xsl:value-of select="."/></p>
 <p><xsl:value-of select="parent::elem"/></p>

 <xsl:for-each select="elem/subelem">
 <p><xsl:value-of select="."/></p>
 <p><xsl:value-of select=".."/></p>

All of those in this case would select the same values.



| A is the name attribute of your grandparent
| B is the name attribute of a span-fill child of your great-grandparent,
| this might not be your ancestor, it might be a great uncle.
| David
|  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

* Jarkko Moilanen                                 *
* Project Researcher, ITCM (www.itcm.org)         *
* Profound XML technology Expert                  *
* University of Tampere                           *
* Hypermedia Laboratory                           *

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

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