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[Bug 6117] [XQuery11UC] Windowing use case Q7 - error in logic

From: <bugzilla@wiggum.w3.org>
Date: Wed, 19 Nov 2008 23:33:40 +0000
To: public-qt-comments@w3.org
Message-Id: <E1L2wYG-0002yr-Ky@farnsworth.w3.org>

http://www.w3.org/Bugs/Public/show_bug.cgi?id=6117


Xavier Franc <xfranc@online.fr> changed:

           What    |Removed                     |Added
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                 CC|                            |xfranc@online.fr




--- Comment #1 from Xavier Franc <xfranc@online.fr>  2008-11-19 23:33:40 ---
Indeed, Michael.

Here is a proposal for a solution:

<result>{
  for sliding window $w in $seq/stream/event 
    start $s when $s/person = "Anton" and $s/direction = "in"
    only end $e when $e/person = "Barbara" and $e/direction = "in"
  where xs:dateTime($e/@time) - xs:dateTime($s/@time) <
xs:dayTimeDuration("PT1H")
  return 
    <warning time="{ $e/@time }">Barbara: Anton arrived 1h ago</warning>
}</result>

Notice the "sliding" instead of tumbling.
Probably the "where" could also be replaced by a "and" with the "only end"
condition.


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Received on Wednesday, 19 November 2008 23:33:50 UTC

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