Re: [xsl] select distinct

[Trevor Nash <tcn@xxxxxxxxxxxxx>]

On Mon, 16 Sep 2002 11:45:53 -0400, Noel Golding wrote:

>I have an xml file
>
>...
>  <para>Some more text goes here <ref name="a1" />.  some more text</para>
> </section>
> <section>
>  <para>More text <ref name="a2" /> <ref name="a1" /></para>
> </section>
></document>
>
>I would like to get all the unique <ref /> elements. 
>
><ref name="a1" />
><ref name="a2" />
>
>I am not sure what my xsl should look like to accomplish this.
>
That is essentially a grouping problem, which you will find explored
in great depth in the FAQ.  The idea is to use xsl:key and the key()
function to get hold of all the ref elements with the same name, and
process only the first one: known as Meunchian grouping.

Trevor Nash
--
Traditional training & distance learning,
Consultancy by email

Melvaig Software Engineering Limited
voice:     +44 (0) 1445 771 271 
email:     tcn@xxxxxxxxxxxxx

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list