string-length could be tricky if the number 999 is represented as 00999.
On 8 May 2012 21:14, G. Ken Holman <gkholman(_at_)cranesoftwrights(_dot_)com>
wrote:
At 2012-05-08 13:07 -0700, Don Smith wrote:
I need an XPath 1.0 expression that will test a node and return a
boolean if the node content is a 3 digit number (i.e., 100-999) and
false if it's anything else.
The catch is this expression won't
be in a transformation so I can't use variables or other additional
constructs. All I get is one expression. I've tried this
*[(string(number(.)) !='NaN')]
and
obtained the number that I need. But I can't get any sort of compare to
work that makes the number be more than 99 and less than 1,000.
Did you try just checking its length? Note I use a different comparison to
ensure the value is, itself, a number at all.
*[number(.)=number(.) and string-length(string(number(.)))=3]
I hope this helps.
. . . . . . . . Ken
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