Re: [xsl] Yet Another Flat File to Hierarchy question..

[Wendell Piez <wapiez at mulberrytech dot com>]

Paul,

Two possibilities:

In principle, I don't see why a key declaration would be impossible of the 
form:

<xsl:key "get-next-level" match="p" 
use="generate-id(preceding-sibling::p[@style &lt; current()/@style][1]"/>

I've never seen the current() function in a key declarations 'use' 
attribute, but don't suppose (at first blush) it's illegal.

Alternatively, you could write a stylesheet running over the source that 
would generate the "levitation" stylesheet (my name, no one else uses it, 
*sniff*) to run over the source. Somewhat monstrous, perhaps, but conceivable.

Alternatively, if your complete data set (your entire document repository) 
is bounded, you could find out what the absolute min and max is, and code 
to that.

In between would be to code for the deepest you have ever seen and have 
exception-trapping in your stylesheet to warn you if you ever have a 
document that goes deeper (necessitating some maintenance, which naturally 
would get more and more seldom).

Cheers,
Wendell

At 05:41 AM 6/13/2002, you wrote:

> My problem is this. My sttributes are numerical depicting the depth the tag
> should be placed at, e.g.:
>
> <p style="1">Top Level Heading</p>
> <p style="2">Sub Heading 1</p>
> <p style="2">Sub heading 2</p>
> <p style="3">Sub Heading 3</p>
> <p style="4">Sub Heading 4</p>
> <p style="1">Another Heading</p>
>
> I can get this to work fine by adapting the key definitions in Jeni's
> algorithm.  However, in the application that I am using this, I do not
> necessarily know in advance the maximum and minimum level value.  I have
> implemented a min and max function to retrieve these values, but I need to
> generate the key look-up tables based on these values.  Is this possible?
> and if so does anyone have an idea as to how to do it?

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Wendell Piez                            mailto:wapiez@mulberrytech.com
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