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Dan,
At 06:33 PM 10/5/2009, you wrote:
Sorry, I couldn't really say without looking at the problem fresh, in reduced form, and maybe not even then.
Keep in mind that the test "/path/to/node/that/is/not/there = ''" is false.
But it sounds to me like you have a handle on it now.
Re: [xsl] Correct way to test for no match
Subject: Re: [xsl] Correct way to test for no match From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx> Date: Mon, 05 Oct 2009 19:10:22 -0400 |
Dan,
At 06:33 PM 10/5/2009, you wrote:
This might sometimes be useful, if for example you are only interested in (1) if (2) is true. That is,
unparsed-entity-uri(ancestor::ipb/figure/subfig/graphic[@boardno=$sht_num]/@boardno)
will return a URI if (and only if) $sht_num appears as a @boardno on an ancestor::ipb/figure/subfig/graphic, and is also declared as an unparsed entity (with a URI not ''); otherwise it will be ''.
So why did my when clause testing against the '' (empty string) not fire? That was my first impulse.
Sorry, I couldn't really say without looking at the problem fresh, in reduced form, and maybe not even then.
Keep in mind that the test "/path/to/node/that/is/not/there = ''" is false.
But it sounds to me like you have a handle on it now.
Cheers, Wendell
====================================================================== Wendell Piez mailto:wapiez@xxxxxxxxxxxxxxxx Mulberry Technologies, Inc. http://www.mulberrytech.com 17 West Jefferson Street Direct Phone: 301/315-9635 Suite 207 Phone: 301/315-9631 Rockville, MD 20850 Fax: 301/315-8285 ---------------------------------------------------------------------- Mulberry Technologies: A Consultancy Specializing in SGML and XML ======================================================================
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