Subject: [xsl] extracting sequences From: Saverio Perugini <sperugin@xxxxxxxxxxxxxxxx> Date: Wed, 18 Feb 2004 20:59:29 -0500 (EST) |
Hello, The following RDF models a hierarchical website of 7 nodes with a max depth of 2. I would like to transform it into a text file containing each path through the site, one per line, where a path is a space delimited sequence of hyperlink labels from the root of the site to a leaf. Therefore, for the following RDF data, I'd like to produce: -- a d a e b f b g c h -- Can xslt realize this transformation? The problem is challenging because 1) the RDF data models a DAG (directed acyclic graph), due to the presence of crosslinks, rather than just a tree, and 2) there is no way to associate any node with its parents and therefore the processing must proceed in a top-down, rather than bottom-up, fashion. Top-down processing is generally convenient when things are nested, but they are not in this case. <RDF xmlns:r="http://www.w3.org/TR/RDF/" xmlns:d="http://purl.org/dc/elements/1.0/"> <Node r:id="Root"> <num>1</num> <d:Title>Root</d:Title> <link r:resource="Root/a"></link> <link r:resource="Root/b"></link> <link r:resource="Root/c"></link> </Node> <Node r:id="Root/a"> <num>2</num> <d:Title>a</d:Title> <link r:resource="Root/a/d"></link> <link r:resource="Root/a/e"></link> </Node> <Node r:id="Root/b"> <num>3</num> <d:Title>b</d:Title> <link r:resource="Root/b/g"></link> <crosslink r:resource="f:Root/a/e"></symbolic> </Node> <Node r:id="Root/c"> <num>4</num> <d:Title>c</d:Title> <crosslink r:resource="h:Root/b/g"></link> </Node> <Node r:id="Root/a/d"> <num>5</num> <d:Title>d</d:Title> </Node> <Node r:id="Root/a/e"> <num>6</num> <d:Title>e</d:Title> </Node> <Node r:id="Root/b/g"> <num>7</num> <d:Title>g</d:Title> </Node> </RDF> I am currently learning RDF. I realize that this question and problem may be better suited for an RDF list and RDF parser/manipulator, respectively. If that is the case, I apologize in advance. Thank You and Best Regards, Saverio XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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