Re: [xsl] Equivalence between XSL and XPath expression

[Geert Josten <Geert.Josten@xxxxxxxxxxx>]

Err, correct me if I am wrong, but doesn't the 'preceding' axis include the ancestors as well?

I would have guessed that the 'equivalent' would have been:
    count(self::menu)+count(preceding::menu)

(apart from the zero-count case mentioned below)

Cheers,
Geert

Michael Kay wrote:

> > And the question is: Is this XPath expression
> >
> > count(./ancestor-or-self::menu)+count(./preceding::menu)
> >
> > equivalent to this XSL expression?
> >
> > 		<xsl:variable name="position">
> > 			<xsl:number level='any' count="menu"/>
> > 		</xsl:variable>
>
> Almost. xsl:number will never return 0, but the XPath expression might. Take
> a look at the XSLT 2.0 spec which defines xsl:number in terms of equivalent
> XPath expressions.
>
> Michael Kay
> http://www.saxonica.com/

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