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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Fwd: complex XPATH test
 Nice go at it. At 02:58 PM 7/17/01, you wrote: ... For starters, there has to be a better way of returning the position of a node within a node set than what I used here (the for-each block). Anyone have any ideas? I tried <xsl:variable name="currPos" select="$containing-block/descendant::node()[.=current()]/position()"/> knowing it wouldn't work (from previous posts to the list, etc.) and I wasn't disappointed. The name of the function, position(), is somewhat misleading here, as it really has nothing to do with the position of a node in a node set, but rather of the context node within the current node list. Closer would be (count(preceding-sibling::node()) + 1), if you only want to count nodes within a given level. Unfortunately, I think this problem is a bit tougher. What you want is more like (count($containing-block/descendent::node()[ ... ]) with a predicate that will filter out the ones before the current node. Still tricky to write, still slow. So the question I have is: How do you return the position of a node in a node set given the node and the node set, so that the position can be used in a comparison or a variable? Second, why is it that ".=$curr" tests the value of each against each other, rather than a 'node id' or something? Wouldn't it make sense for that to actually check that the nodes are equivalent since if I wanted to check their string values I could do "string(.)=string($curr)" but I can't do the reverse. (ie. "node(.)=node($curr)" or something). I'm I overlooking something here? A true node identity test would be very useful for this as for similar problems. That's just not the way = works in XSLT 1.0. Solutions to similar problems have approached it by using, e.g., generate-id() to do node comparisons for identity. I can imagine creative uses of <xsl:number> that could be used to calculate priority etc., but still slow and klugey. Where are the mathematicians? 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 ====================================================================== XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list 
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