Re: [xsl] Unique Attribute value

[Michael Kay <mike@xxxxxxxxxxxx>]

On 01/07/2010 08:13, pankaj.c@xxxxxxxxxxxxxxxxxx wrote:
> Hello all,
>
> Is there a way to check whether an element's attribute has unique value in
> xml structure and is not repeating.
>
> For instance, in below sample xml "p1" is repeating twice and any good
> parser will throw an error for it, though I would like it to check it with
> XSLT itself. Weird, I know. I am just trying to figure out the best
> possible way to get this done.
>
> My actual requirement is little bit more complex but thought of starting
> asking with this.
>
>
> <?xml version="1.0"?>
> <root>
>          <x id="p1">xxx</x>
>          <x id="p2">yyy</x>
>      <b>
>          <x id="p3">zzz</x>
>          <x id="p1">AAA</x>
>      </b>
> </root>
>
>
>    
<xsl:variable name="duplicates" as="xs:string*">
<xsl:for-each-group select="//@id" group-by=".">
<xsl:sequence select="current-group()[2]"/>
</xsl:for-each-group>
</xsl:variable>

Michael Kay
Saxonica Limited