On 3/6/06, Jeff Sese <jsese@xxxxxxxxxxxx> wrote:
> Hi all,
>
> I have this variable:
>
> <xsl:variable name="anchor" as="element()*"
> select="document('source.xml')//anchor[parent::xref]/@id"/>
>
> How can I get all the id values that are not unique?

Create a key:

<xsl:key name="anchor-by-id" match="anchor[parent::xref]" use="@id"/>

Then for each anchor, count how many occurances are in the key:

select="count(key('anchor-by-id', @id) > 1)"

If there is more than one occurrance then the id is not unique.

If you don't want an entry for each non-unique @id, then only generate
output for the first occurrance:

select="count(key('anchor-by-id', @id) > 1)
               &amp;&amp; generate-id(.) =
generate-id(key('anchor-by-id', @id)[1])"

cheers
andrew