RE: [xsl] match nodes based on given path

["Andrew Welch" <AWelch@xxxxxxxxxxxxxxx>]

> Your solution of generating a path for each element and checking it
> against the given path is not only incredibly inefficient, it's also
> plain wrong. For any node, there are an infinite number of possible
> paths that select it.

Yes indeed thats why I was looking for a better solution ;) However I was assuming that if the path was produced by saxon:path() in the link file, and then tested against saxon:path() in the transform, the two would be equal (some kind of normalised path), and so it possibly isnt *that* wrong...

I think generating a stylesheet that uses David's key based approach is the way to go here.  Thanks for all the input.

cheers
andrew

 





> -----Original Message-----
> From: Michael Kay [mailto:mhk@xxxxxxxxx]
> Sent: 10 April 2003 23:39
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE: [xsl] match nodes based on given path
> 
> 
> >   <link path="/root/node/value"/>
> > 
> > This is more tricky than it initally looks.  I'm currently 
> > using an importing stylesheet that tests every element's path 
> > against those in the parameter, which is far from efficient 
> > and requires the paths to be in some kind of normal form.
> > 
> 
> If you want to manipulate paths held in strings at run-time, then you
> need the xx:evaluate() extension.
> 
> Your solution of generating a path for each element and checking it
> against the given path is not only incredibly inefficient, it's also
> plain wrong. For any node, there are an infinite number of possible
> paths that select it.
> 
> 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
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> 
> 
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