Re: [xsl] Implementing XPointer Resolution Withsaxon:evaluate()

[Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>]

Hi Eliot,

At 06:21 PM 8/13/2002, you wrote:
> > Yet if they contain all the same information, using a node-set extension
> > couldn't you query into them and find the further information you need to
> > continue along your chain?
>
> No--I need the *the same node*, not a copy of the node.
>
> That is, an XPointer addresses a thing and I need the resolution of that
> XPointer to return the thing, not a copy of the thing.
>
> It's not about the information in the element, it's about the element
> itself. For example, I must be able to navigate from the element
> returned to its parent--I can't do this if what I get back is a copy of
> the node.

Yes, this makes sense. Maybe I wasn't clear or complete enough in my question.

Cutting through, for example, if you had

<xsl:key match="*" use="generate-id()"/>

you could at any time get a node back given its generated ID as a key 
value. Admittedly this isn't much use if you don't have the node and 
therefore can't get its generated ID to look for it. (I guess in effect 
this is the knot you're trying to cut. The application of keys for node 
referencing assumes you know what values associated with a node, such as an 
attribute or whatever, will be referenced elsewhere and thus be useful as a 
key.) But if you did have that value in a node, it wouldn't matter if you 
called the key function with that node or a copy of it.

I guess I'm spinning around the same circle you are. :-)

Cheers,
Wendell


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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