[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Help Needed On Re-Organizing Structure
Thanks everyone for your advice. I finally managed to sort this out based on using set differences as suggested in the O'Reilly cookbook, I had to do an intermediate XSL transformation first to re-arrange the formating of my source XML so the whole thing is a two step process. If it turns out to be really bad performance I might be back to seek more help on how to merge the two XSL stylesheets into a single pass process..... Charles -----Original Message----- From: Wendell Piez [mailto:wapiez@xxxxxxxxxxxxxxxx] Sent: 20 April 2006 16:33 To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: RE: Help Needed On Re-Organizing Structure Charles, You should also look at the technique Jeni Tennison refined back in 2000, in the archives at http://www.biglist.com/lists/xsl-list/archives/200012/msg00175.html and also the XSL FAQ at http://www.dpawson.co.uk/xsl/sect2/flatfile.html In short, there are, in XSLT 1.0, two methods that are commonly used to approach this problem, which we often label "positional grouping" (elements must be grouped based on their relative positions): 1. "tree visitor" or "forward walk" - this is what Omprakash used. When a "header" element is processed, conduct an explicit traversal of the following-sibling axis, one node at a time, to include all its "child" elements in a group with it. 2. key-based grouping (what Jeni used in the post above): use keys to associate elements with the header element with which they should be grouped. When you do the header, use a key to retrieve the elements that belong with it into the group it makes. Either technique works. Either can be conducted recursively to achieve multiple levels of grouping. In XSLT 2.0, the native grouping constructs make all this prestidigitation quite unnecessary. (I'm sorry, but I can't help but think of digital processing as counting on my fingers, really really fast.) 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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