Hi,



At 08:40 AM 5/2/2005, Bruce wrote:
On 5/2/05, Ramkumar Menon <ramkumar.menon@xxxxxxxxx> wrote:
> I run into a compilation error while using this stylesheet..
>
>   <xsl:template match="(/)">
>     <o1:NeverPrints/>
>   </xsl:template>

It should be just "/", in the same way that it's "foo" not "(foo)".

The reason for this is that match patterns cannot contain just any 
arbitrary XPath expression: they have their own grammar, which doesn't 
include matching on elements grouped with the "( )" operator.



You couldn't say match="2 + 1" either, since although "2+1" is valid XPath 
(it returns the number 3), it doesn't match the grammar for patterns. But 
you could say apply-templates select="(/)" and be okay -- since 
apply-templates' "select" takes any XPath (as long as, in this case, it 
returns a node-set), not just a pattern.



Learning the restrictions on patterns (you can't say 
match="preceding-sibling::*" either) and understanding the reason for them 
(back to the processing model) is part of a full understanding of XSLT.



Cheers,
Wendell


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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