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Re: distinct-values work-around for Xpath 1.0

From: Martin Honnen <mahotrash@-----.-->
To: NULL
Date: 8/27/2009 12:47:00 PM
Barnum wrote:

> I'm using Xpath 1.0, so I can't use 'distinct-values'. Is there a work-
> around? Alternative implementation?

With the XML being e.g.

<root>
   <foo>a</foo>
   <foo>b</foo>
   <foo>a</foo>
   <foo>c</foo>
   <foo>c</foo>
   <foo>d</foo>
</root>

the XPath /root/foo[not(. = preceding-sibling::foo)] selects only 
distinct 'foo' elements e.g.

<foo>a</foo>
<foo>b</foo>
<foo>c</foo>
<foo>d</foo>

If you use XPath 1.0 inside XSLT 1.0 then you can also use Muenchian 
grouping to group and process only the first item in each group.


-- 

	Martin Honnen --- MVP XML
	http://msmvps.com/blogs/martin_honnen/


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