[xsl] Re: RE: Postional predicates de-mystified

[Dimitre Novatchev <dnovatchev at yahoo dot com>]

> > <xsl:value-of select=" for $i in 1 to count(ancestor::*)
> >    return name((ancestor::*)[$i])" separator = "/"/> 
> >
> > Provides the 'path' to the current node! Pretty neat.
> > (or should I be saying a document order sequence?)
> 
> I think Dave was trying out the numeric predicates, but more neatly,
> you could just use:
> 
>   <xsl:value-of select="for $e in ancestor::* return name($e)"
>                 separator="/" />

This is indeed quite powerful, however in order to obtain the "path" to the current
node there still must be:

 1. The starting "/" for the root node. This could be obtained by changing the
expression to:

   <xsl:value-of select="for $e in ancestor::node() return name($e)"
                 separator="/" />

 2. The path has to include the current node. Therefore something like this will be
required:

   <xsl:value-of select="for $e in ancestor-or-self::node() return name($e)"
                 separator="/" />

  but this will not work for non-element nodes...

 3. Most important, positional information will not be included, so for example:

  /a/b[2]/c[3]

will produce:

 /a/b/c

 4. Maybe I'm wrong, but shouldn't this be: separator="'/'" ?


Cheers,
Dimitre Novatchev.




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