Re: [xsl] Correcting a prior error

[Dave Pawson <davep@xxxxxxxxxxxxx>]

On Fri, 30 Jul 2010 10:00:30 +0100
Michael Kay <mike@xxxxxxxxxxxx> wrote:

> I think you're out by one: the outermost element will have
> 
> count(ancestor::*|preceding::*)
> 
> equal to 0, but can be retrieved as (.//*)[1].

Because I'm counting preceding|ancester, which ignores self!
That's what I missed. 

> 
> I think I would use
> 
> <xsl:key name="p" match="*">
> <xsl:number level="any" count="*" from="/"/>
> </xsl:key>
> 
> then
> 
> <xsl:variable name="posn">
>    <xsl:number level="any" count="*" from="/"/>
> </xsl:variable>
> 
> <xsl:variable name="val" select="document($src)/key('p', $posn)"/>
> 
> 
> Michael Kay
> Saxonica

Checking my understanding:
Key of *all* elements..... I can see what it
posn variable, inside my template matching a element,
Holds up to, and including current context node. 
val then retrieves .... should be the element value? That I don't
understand Mike? My template matches on the element, not the attribute?
I use $val as the @href value
 <!-- Now copy this across -->
    <x:a href="{$val}">
      <xsl:value-of select="."/>
    </x:a>

Tried it. It works, I'd like to understand why?


> > <-this is an attempt to select the 'right' a element->
> >      <xsl:variable name="posn"
> > select="count(ancestor::*|preceding::*)"/> 

Or change this to count(ancestor::*|preceding::*) + 1?

That also works.



-- 

regards 

-- 
Dave Pawson
XSLT XSL-FO FAQ.
http://www.dpawson.co.uk