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Re: Implementing a (fairly) complex business rule

Subject: Re: Implementing a (fairly) complex business rule
From: David Carlisle <davidc@xxxxxxxxx>
Date: Tue, 30 Sep 2008 14:34:55 +0100
Re:  Implementing a (fairly) complex business rule
> I just cannot see how this can happen.

test="string-length(s0:POSTCODE/text() = 0)"

is always true as it is taking the value returned by  string-length as a
boolean, which is true if it is non zero

the string being passed to string-length is either "true" or "false"
depending on whether
s0:POSTCODE/text() = 0
is true or not, which is true just if one of the text node children of
s0:POSTCODE is "0".

but neither "true" nor "false" have zero length, so the test is always
true.

David


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