Re: [xsl] Copying Namespace Nodes

["G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>]

At 2011-11-27 22:10 +0100, Heiko Niemann wrote:
> I have an element I want to copy and in the source it looks like this:
>
> <a:elem
>   xmlns:a="example.com/ns/a"
>   xsi:type="nsc:foo"
>   xmlns:nsc="example.com/ns/sensitive"
>   xmlns:b="example.com/ns/b"
>   xmlns:c="example.com/ns/c"
>   ...
>   xmlns:z="example.com/ns/z">info</a:elem>
>
> What I want to achieve at the same time:
>
> 1) Keep the namespace declaration for the namespace sensitive content of
> the xsi:type attribute (with prefix nsc).
>
> 2) Get rid of all namespace declarations that are not needed here (prefix
> b, c, ..., z) and that clutter up my result document.
>
> If I use copy-of with copy-namespaces set to 'no' the declaration for
> namespace sensitive content will be lost. If I say 'yes' everything stays
> the same. So is there a short way I have not seen yet or is the solution
> some verbose template? :)

I don't think the template needed is very verbose at all since you 
are limiting yourself to finding the one prefix that is found in the 
xsi:type= attribute:

T:\ftemp>type heiko.xml
<?xml version="1.0" encoding="UTF-8"?>
<a:elem
  xmlns:a="example.com/ns/a"
  xsi:type="nsc:foo"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
  xmlns:nsc="example.com/ns/sensitive"
  xmlns:b="example.com/ns/b"
  xmlns:c="example.com/ns/c"
  xmlns:z="example.com/ns/z">info</a:elem>
T:\ftemp>xslt2 heiko.xml heiko.xsl
<?xml version="1.0" encoding="UTF-8"?><a:elem 
xmlns:a="example.com/ns/a" xmlns:nsc="example.com/ns/sensitive" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:type="nsc:foo"/>
T:\ftemp>type heiko.xsl
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
  version="2.0">

<xsl:template match="*">
  <xsl:copy copy-namespaces="no">
    <xsl:for-each select="@xsi:type">
      <xsl:copy-of
          select="../namespace::*[name(.)=substring-before(current(),':')]"/>
      <xsl:copy/>
    </xsl:for-each>
  </xsl:copy>
</xsl:template>

</xsl:stylesheet>
T:\ftemp>

I hope this helps.  If there is no xsi:type attribute, then no copy 
of the namespace node is done.

. . . . . . . . Ken

> Thanks for help,
> Heiko


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