Subject: RE: [xsl] How do you select all unique first-position characters? From: Jeff Beadle <Jbeadle@xxxxxxxx> Date: Thu, 21 Nov 2002 09:50:44 -0500 |
Wendell, Could you explain to me why the union of the current node with that of the first node returned from the xsl:key is needed in the count? Wouldn't that always be 1? I know it's not, because it works. Thanks, Jeff -----Original Message----- From: Wendell Piez [mailto:wapiez@xxxxxxxxxxxxxxxx] Sent: Wednesday, November 20, 2002 6:22 PM To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: Re: [xsl] How do you select all unique first-position characters? I should think a key using the initial letter of each name would be a big help: <xsl:key name="person-by-initial" match="person" use="substring(@name,1,1)"/> Then "key('person-by-initial', 'A')" would get you back the elements for Anthony, Amy and the other Amy, and "key('person-by-initial', 'A')[1]" would get you just Anthony. //person[count(.|key('person-by-initial', @name)[1]) = 1] gets you all person elements that are first with their initial. In other words, the usual grouping stuff. Cheers, Wendell (At 04:50 PM 11/20/2002, Greg wrote: >At 01:36 PM 11/20/2002, you wrote: >><report-data> >> <person name="Anthony" /> >> <person name="Amy" /> >> <person name="Amy" /> >> <person name="Jim" /> >> <person name="Jason" /> >></report-data> >> >>I would expect to get A,J from the above XML > > Here's most of it for you. I'm having trouble with the initial > variable selection though. I'm hoping somebody can take it from here, as > I'm stumped now too.... ====================================================================== 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 XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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