Re: [xsl] Optimization using keys

[António Mota <amsmota@xxxxxxxxx>]

BTW, is it correct to assume that

<xsl:copy-of select="*"/>

is faster than

<xsl:apply-templates select="*"/> ?


On Wed, 16 Feb 2005 19:53:30 +0000, Antsnio Mota <amsmota@xxxxxxxxx> wrote:
> Curiosly i just did that, in part beacuse i remembered another xslt
> where i did that per your sugestion... It improves a little, specially
> when running on IDE (Xalan, Saxon653, Saxon81B) but in the browsers
> (FF, IE) it improves just a little...
>
>
> On Wed, 16 Feb 2005 19:47:59 -0000, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> > Anything that processes each Menu element by counting how many preceding
> > Menu elements there are is going to be slow, in fact it's going to vary
as
> > the square of the input document size.
> >
> > If your requirement is:
> > Given a XML with nested Menu structures,
> > i want to copy all the nodes to the output tree *except* the one that
> > corresponds to the $pos position, wich i want to replace with the
> > result from document.
> >
> > then what you should do is first identify the node at the Nth position,
and
> > then when you process each node, test whether it is that one.
> >
> > The node at the n'th position is (//Menu)[$pos]
> >
> > You can test whether node $A is the same node as $B in XPath 2.0 using
($A
> > is $B). In 1.0 you can use generate-id($A)=generate-id($B), or
> > count($A|$B)=1.
> >
> > Michael Kay
> > http://www.saxonica.com/