RE: [xsl] set:intersection oddity

["Michael Kay" <mhk@xxxxxxxxx>]

You are making two mistakes.

Firstly, you are looking at the $data and $rules nodes, not at their
children. $data and $rules are document nodes, and they are distinct
from each other.

Secondly, set:intersect is comparing nodes by identity, not by content.
Two nodes can have the same content but still have distinct identity.

Michael Kay


> -----Original Message-----
> From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx 
> [mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of John Sharp
> Sent: 28 June 2003 20:33
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] set:intersection oddity
> 
> 
> Hello, I was attempting to use the set:intersection function 
> from http://exslt.org/sets.  The examples showing the 
> intersection of cities with letters 'i' and 'e' work as 
> given. However the following does not work - INTERSECT1 is 
> always empty.
> 
> <xsl:stylesheet 
>   xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>   xmlns:saxon="http://saxon.sf.net/"; 
>   xmlns:set="http://exslt.org/sets";
>   extension-element-prefixes="set saxon"
> version="1.1">
> 
> <xsl:template match="/">
> 
>   <xsl:variable name="data">
>     <Type>PMT</Type>
>     <Type>FUNC</Type>
>   </xsl:variable>
> 
>   <xsl:variable name="rules">
>     <Type>PMT</Type>
>     <Type>DC_PARA</Type>
>     <Type>FUNC</Type>
>   </xsl:variable>
> 
> 
>   <INTERSECT1>
>     <xsl:copy-of select="set:intersection($data,$rules)"/>
>   </INTERSECT1>
> 
>   <INTERSECT2>
>     <xsl:copy-of select="set:intersection($data,$data)"/>
>   </INTERSECT2>
> 
>   <INTERSECT3>
>     <xsl:copy-of select="$data[count(. | $rules) != count( $rules)]"/>
>   </INTERSECT3>
> 
> </xsl:template>
> 
> 
> Here's the output:-
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <INTERSECT1/>
> <INTERSECT2>
>    <Type>PMT</Type>
>    <Type>FUNC</Type>
> </INTERSECT2>
> <INTERSECT3>
>    <Type>PMT</Type>
>    <Type>FUNC</Type>
> </INTERSECT3>Execution time: 336 milliseconds
> 
> 
> If I run the exslt web page example, it runs fine.
> 
> Kind regards,John.
> 
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> 


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