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Fwd: Filtering Problem

Ghislain Fourny gfourny at inf.ethz.ch
Mon Apr 19 22:45:27 PDT 2010


  Fwd: Filtering Problem
Hi Greg,

How about declaratively building a two-dimensional boolean table (one value for each document and each find entry) and then filter those lines that only have true values?

For example, it could look like the following query, provided $searchDocs and $find are defined (it can probably be simplified further):

let $booleans := <boolean-table>{
        for $doc at $d in $searchDocs
        return
        <document id="{$d}">{
            for $f in $find
            return
            <value>{count($doc/ent[@type = $f/@type]) >= $f/@count}</value>
        }</document>
    }</boolean-table>
for $d in 1 to count($searchDocs)
where every $b in $booleans/document[@id=$d]/value satisfies xs:boolean($b)
return $searchDocs[$d]

Kind regards,
Ghislain




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