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Re: a little xpath problem(and expressoins!?)

From: Martin Honnen <mahotrash@-----.-->
To: NULL
Date: 8/3/2007 6:58:00 PM

giddy wrote:
>>   /bills/bill[@date = '3/Aug/07' and personBill[@personName = 'Rebecca']]

> Is there a manual or something for XPath , i looked at the one at w3c.org 
> but its to heavy. Anything simpler? (w3schools.com did'nt have anything 
> either on this!)

Inside of the square brackets [] is a predicate. While
   @date = '3/Aug/07'
is probably easy to understand as a condition you can also use 
expressions that evaluate to a node-set. In that case the expression is 
converted to a boolean and any non-empty node-set evaluates to true 
while an empty node-set evaluates to false.
So
   /bills/bill[and personBill[@personName = 'Rebecca']]
selects those bill elements that have (at least one) child element 
personBill for which the condition @personName = 'Rebecca' holds.

-- 

	Martin Honnen --- MVP XML
	http://JavaScript.FAQTs.com/


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