Created
February 8, 2019 09:34
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example topo sort in xquery
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| declare function local:topo-sort($unsorted, $sorted ) { | |
| if (empty($unsorted)) then $sorted | |
| else | |
| let $allnodes := $unsorted [ every $id in depends/@id satisfies $id = $sorted/@id] | |
| return | |
| if ($allnodes) then | |
| local:topo-sort( $unsorted except $allnodes, ($sorted, $allnodes )) | |
| else () | |
| }; |
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