Subject: [xsl] recursive addition From: annirack@xxxxxxx Date: Wed, 14 Jan 2004 12:40:36 -0800 |
I have a structure (much like a file system) where elements of the same type are linked together via IDs rather than the XML structure--i.e. all directory elements are at the same level. For an arbitrary directory level element, I want to sum a numeric attribute for all linked elements and so on down the tree. Is there any way to do this? I know that recursion is the first step, but what I don't know how to sum an arbitrary number of parallel level attributes in different elements. Here's an example: <root> <folder files="2" id="dir0"> <file id="dir1" /> <file id="dir4" /> </folder> <folder files="4" id="dir1"> <file id="dir2" /> <file id="dir3" /> </folder> <folder files="3" id="dir2" /> <folder files="6" id="dir3" /> <folder files="7" id="dir4" /> <folder files="5" id="dir5" /> </root> If my arbitrary element id is "dir1", then the result should be 9. (folder[@id='dir2']/@files + folder[@id='dir3']/@files) How do I do that with xsl? XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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