Subject: Re: [xsl] extracting sequences From: Dimitre Novatchev <dnovatchev@xxxxxxxxx> Date: Thu, 19 Feb 2004 00:19:35 -0800 (PST) |
> Hello, > > The following RDF models a hierarchical website of 7 nodes with a max > depth of 2. I don't see any graph described in your xml document. > 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? It is not xslt that will create the transformation, but an XSLT programmer. > 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. Seems quite straightforward to me -- especially if you explain the problem properly. Could you draw the graph and explain how its vertices and arcs are specified in your xml document? What is the meaning of a "crosslink"? Cheers, Dimitre Novatchev FXSL developer, http://fxsl.sourceforge.net/ -- the home of FXSL Resume: http://fxsl.sf.net/DNovatchev/Resume/Res.html > 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> __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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