Re: [xsl] Selecting non-duplicate nodes

["Mark" <mark@xxxxxxxxxxxx>]

Hi Michael,
At the moment, Brandon's solution appears to be working. If after examining 
the output from my full data set I discover it has problems, I'll give your 
solution a try. By the way, your code contains XPath expressions I have 
never seen, so I will look those up in order to broaden my XPath repertoire.

Thanks for your help,
Mark

-----Original Message----- 
From: Michael M|ller-Hillebrand
Sent: Wednesday, October 12, 2011 11:01 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Selecting non-duplicate nodes

Am 12.10.2011 um 17:33 schrieb Mark:

> My question now is: how can I change this stylesheet so that for the 
> listed input, no <FormatButtons> in the output contains more than one copy 
> of a <Format> with the same attribute name and value? That is, where the 
> current output is, for example:
>
> <FormatPage souvenir-sheet="365">
>  <FormatButtons>
>    <Formats se-tenant="365"/>
>    <Formats se-tenant="365"/>
>    <Formats coupon="367"/>
>    <Formats coupon="368"/>
>  </FormatButtons>
> </FormatPage>

Mark,

If a node in your sample is a duplicate of another node can be retrieved 
from the attribute names and their values. So IMO the grouping key could be 
a serialization of them. In other words, we look at the source as if we were 
a text processor, like this:

<xsl:template match="FormatButtons">
 <xsl:copy>
   <xsl:for-each-group select="Formats"
       group-by="string-join(
         for $i in 1 to count(@*)
           return concat(name(@*[$i]), '=', @*[$i]), ' ')">
     <xsl:apply-templates select="."/>
   </xsl:for-each-group>
 </xsl:copy>
</xsl:template>

In XML the order of attributes is usually irrelevant, but the above solution 
does not ignore order. But it works with any number of attributes.

- Michael M|ller-Hillebrand

--
_______________________________________________________________
Michael M|ller-Hillebrand: Dokumentation Technology
Adobe Certified Expert, FrameMaker
Consulting and Training, FrameScript, XML/XSL, Unicode
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