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Re: Re: Identity transformation (without using xsl:copy)
- From: Dimitre Novatchev <dnovatchev at yahoo dot com>
- To: xsl-list at lists dot mulberrytech dot com
- Date: Sun, 31 Mar 2002 10:20:50 -0800 (PST)
- Subject: [xsl] Re: Re: Identity transformation (without using xsl:copy)
- Reply-to: xsl-list at lists dot mulberrytech dot com
Hi Roger,
Yes, it can be done. In addition to what J.Pietschmann and Dan Sullivan
proposed, the stylesheet bellow will also correctly re-create the
namespace prefixes used in the source xml document.
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output indent="yes" />
<xsl:strip-space elements="*" />
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*" />
</xsl:copy>
</xsl:template>
<xsl:variable name="lower" select="'abcdefghijklmnopqrstuvwxyz'" />
<xsl:variable name="upper" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'" />
<xsl:template match="*">
<xsl:variable name="prefix"
select="name(namespace::*[. = namespace-uri(current())])" />
<xsl:variable name="upperName"
select="translate(local-name(), $lower, $upper )" />
<xsl:variable name="newName">
<xsl:choose>
<xsl:when test="$prefix">
<xsl:value-of select="concat($prefix, ':', $upperName)" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$upperName" />
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:element name="{$newName}" namespace="{namespace-uri(.)}">
<xsl:copy-of select="namespace::*" />
<xsl:apply-templates select="node()|@*" />
</xsl:element>
</xsl:template>
</xsl:stylesheet>
Hope this helped.
Cheers,
Dimitre Novatchev.
"Roger L. Costello" <costello at mitre dot org> wrote:
A few weeks ago I posted a message (below) asking how to do an identity
transformation (without using <xsl:copy>) on instance documents that
contain namespace declarations. The resounding response was "no way".
[Thanks for your input!] Okay, after much testing and reading I have
convinced myself that you are correct - <xsl:copy> must be used. It
seems to me that this puts some serious limits on XSLT. Consider this
simple problem: write a stylesheet which does an identity
transformation, but where all element (local) names are converted to
upper case. For example:
If this is the start document:
<?xml version="1.0"?>
<j:juicers xmlns:j="http://www.juicers.org";>
<j:juicer id="omega">
<name xmlns="http://www.names.org";>
Mighty Omega Juicer
</name>
</j:juicer>
</j:juicers>
Then this should be the result document:
<?xml version="1.0"?>
<j:JUICERS xmlns:j="http://www.juicers.org";>
<j:JUICER id="omega">
<NAME xmlns="http://www.names.org";>
Mighty Omega Juicer
</NAME>
</j:JUICER>
</j:JUICERS>
If I could use <xsl:element> then I could easily accomplish this
transformation. However, it escapes me how to do it if I am forced to
use <xsl:copy>.
The more general question is: if I use <xsl:copy> to copy over an input
tree to an output tree how can I make modifications to elements names
(such as converting the local part to upper case, as shown above), and
modifications to each element's (non-namespace declaration) attributes?
Thanks! /Roger
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