RE: [xsl] Hierarchy problem

[DPawson at rnib dot org dot uk]

David C wrote:

> > is (or is not) a direct descendant of another node (e.g. 
> level2[id='l2'])
> > or if there are intervening levelX elements.
> 
> if $x is an element  node and $y is another element node then 
> 
> count($x/*|$y) = count($x/*)
> 
> just if $y is a child of $x which is what I think you mean by direct
> descendant.
> 
> count($x//*|$y) = count($x/*)
> 
> if $y is a descendent of $x


I'm clearly not clear again.
xml

  <level1 id='l1'>
   <h1>Level1</h1>
   <level2 id='l2'>
    <h2>Level2</h2>  <!-- bad navPoint 1 -->
    <level3 id='l3'> <!-- good navPoint 2 -->
     <h3>level3</h3>
     <note id="noteId">  <!-- navLabel target -->
      <p>Note content</p>
     </note>
    </level3>
   </level2>
  </level1>

(My definitions)
level3 is a 'direct descendant' of level2
level3 is not a 'direct' descendant of level1
  (since level2 intervenes).
I.e. I'm only interested in the wrapper levels (level1 level2 level3)

Testing with

<xsl:variable name='x' select='/level1/level2'/>
<xsl:variable name='y' select='/level1'/>


<xsl:template match="/">
  <xsl:message>Y is a child of X:<xsl:value-of select="count($x/*|$y) =
count($x/*)"/></xsl:message>

  <xsl:message>X is a child of Y:<xsl:value-of select="count($x//*|$y) =
count($x/*)"/></xsl:message>

Gives

Y is a child of X:false
X is a child of Y:false

I.e. its implying that level2 is not a direct descendant of level1,
which according to my definitions, it is.


Is that any clearer David?

Regards DaveP





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