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RE: XPATH expression

• To: "'Razvan MIHAIU'" <mihaiu@m...>,<xml-dev@l...>
• Subject: RE: XPATH expression
• From: "Michael Kay" <mike@s...>
• Date: Tue, 8 Mar 2005 09:09:47 -0000
• In-reply-to: <422D48AC.6040508@m...>
• Thread-index: AcUjqdwo1dNVO3r6RJa1K/5QltqPaAAE8OXQ

> 
>     Can somebody explain to me what is the meaning of the following 
> expression:
> 
> a[not(following::x=.)]

In XPath 1.0: The set of elements named "a" whose string-value is different
from the string-value of all following elements named "x".

In XPath 2.0: the sequence of elements named "a", in document order, whose
typed value is disjoint from the typed value of all following elements named
"x" (where "disjoint" means that the typed values have no item in common -
the typed value of an element is in general a list of atomic values).

In your example, the set consisting of the 4th, 6th, and 7th "a" elements.

(Note that the xsl-list at www.mulberrytech.com is the best place for XPath
and XSLT questions).

Michael Kay
http://www.saxonica.com/
> 
> 
>     Sample xml:
> 
> <B>
>     <a>1</a>
>     <a>2</a>
>     <a>1</a>
>     <x>3</x>
>     <x>4</x>
>     <x>2</x>
> </B>
> 
> <B>
>     <a>3</a>
>     <a>1</a>
>     <a>2</a>
>     <a>3</a>
>     <x>5</x>
>     <x>4</x>
>     <x>1</x>
> </B>
> 
> 
> 
> Regards,
> Razvan
> 
> 
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• References:
  • XPATH expression
    • From: Razvan MIHAIU <mihaiu@m...>

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