[xsl] Re: Top n values

[Dimitre Novatchev <dnovatchev@xxxxxxxxx>]

--- Dan Diebolt wrote:
 
> I need to process the top n values in a list where n
> is dynamic. So if n=3 and I had the following XML:
> 
> <root>
>  <item>1</item>
>  <item>5</item>
>  <item>3</item>
>  <item>2</item>
>  <item>6</item>
>  <item>4</item>
> </root>
> 
> I need to process <item>'s with values 6,5,4. If I had
> captured n in a variable/parameter, what is the most 
> efficient way to do this? What I want to avoid is walking 
> the <item> nodset multiple times as there are a lot of
> <item>s (thousands). Thanks.


You can sort the node-set and produce the first three nodes.

Or you could use:

http://www.topxml.com/code/default.asp?p=3&id=v20010310050532

but it is not so efficient.





=====
Cheers,

Dimitre Novatchev.
http://fxsl.sourceforge.net/ -- the home of FXSL

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