how to generate an inventory of elements in alistfor whole collection?

[Michael Kay]

> 
> I had to replace the "{.}" with "{$x}" to avoid an error from eXist.  

Sorry about that. It's an error I make all the time - the result of too many
years spent writing XSLT for-each instructions.

Incidentally the XSLT solution to this is:

<xsl:for-each-group select="//highlight/@subject/tokenize(.,';')">
  <token value="{current-grouping-key()}" count="{count(current-group())}"/>
</xsl:for-each-group>

-- which is rather easier for the system to optimize.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay 


> But, it worked beautifully and gives me an example of a way 
> to approach some other tasks. I had no idea how powerful a 
> "let" could be
> -- you just grabbed EVERYTHING needed for the calculation in one step!
> 
> thank you!
> -david
> 
> 
> ---
> 
> I think, from reverse engineering your description, that what 
> you want is along these lines:
> 
> let $tokens := //highlight/@subject/tokenize(.,';')
> for $x in distinct-values($tokens)
> return
>    <token value="{.}" count="{count($tokens[. eq $x])}"/>