Re: Data-driven Display of records with variable numbe
Thanx Wendell. This worked out fine! -- Rich ----- Original Message ----- From: "Wendell Piez" <wapiez@xxxxxxxxxxxxxxxx> To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx> Sent: Thursday, December 09, 2004 6:46 PM Subject: Re: Data-driven Display of records with variable number of fields > Rich, > > The usual approach to this is to use the name() or local-name() function to > extract the names of your elements as strings, and then do string testing > against those names in the predicate of an XPath, to select them. > > So when your context node is an unknown element type, you can still get all > the nodes of that type that are, say, children of some othe node $parent, > by saying > > $parent/*[name()=name(current())] > > ... you can even parameterize a name (again as a string) and pass it around > between templates. > > So let's say you wanted to process a set of $records ... you could say > > <xsl:for-each select="$records"> > <xsl:variable name="thisrecord" select="."> > <xsl:for-each select="/headers/*"> > <xsl:apply-templates > select="$thisrecord/*[local-name()=local-name(current())]"/> > </xsl:for-each> > </xsl:for-each> > > ... which applies templates only to the children of each member of $records > whose names appear as the name of an element child of /headers, in the > order they appear there. (In this example I used the local-name() function > so you could keep your elements in separate namespaces if you wanted.) > > I hope this is enough to get you going. > > Cheers, > Wendell > > At 04:05 PM 12/9/2004, you wrote: > >Is this possible in xslt-1.0? > > > >Given the following input, I want to transform the output such that I get > >only the fields of each record which I specify in the headers element. I > >want the order to also be the order in which they appear in the headers > >element. So if headers looks like: > ><headers> > ><year/> <artist/> > ></headers> > >then I want each record in the output to only contain the year and artist > >fields, in that order. > > > >I can't seem to write an xPath expression for this kind of transform because > >xPath node tests cannot contain variables. The expression would need to look > >something like "/cds/cd/$field", where $field would contain the name of one > >of the nodes listen in /headers (see xml below). > > > >Thanx for any suggestions... > > > >-- Rich > > > >Input: > ><?xml version="1.0" encoding="ISO-8859-1" ?> > ><?xml-stylesheet type="text/xsl" href="transform.xsl"?><cds> > ><title>My CD Collection</title> > ><headers> > ><title/> > ><artist/> > ><year/> > ></headers> > > > ><cd> > ><artist>Rich Caloggero</artist> > ><title>A Taste of Tranquility</title> > ><year>2004</year> > ><label>Touch the Sky Music</label> > ></cd> > > > ><cd> > ><artist>The Grateful Dead</artist> > ><title>Europe 72</title> > ><year>1972</year> > ></cd> > ></cds> > > > > > > > >-- Rich > >"In the end, our society will be defined not only by what we create, but by > >what we refuse to destroy." > >-John C. Sawbill (1936-2000), president, The Nature Conservancy, 1990-2000 > > > ====================================================================== > 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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