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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
... 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.
At 04:05 PM 12/9/2004, you wrote:
Re: [xsl] Data-driven Display of records with variable number of fields
Subject: Re: [xsl] Data-driven Display of records with variable number of fields From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx> Date: Thu, 09 Dec 2004 18:46:46 -0500 |
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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