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Date: Mon, 8 Aug 2016 21:21:27 +0000 (UTC)
From: Spyros Kapnissis <skapni@yahoo.com.INVALID>
Reply-To: Spyros Kapnissis <skapni@yahoo.com>
To: Lucene Users <java-user@lucene.apache.org>
Message-ID: <240334400.14267196.1470691287094.JavaMail.yahoo@mail.yahoo.com>
Subject: BooleanQuery rewrite optimization
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Hello all,
I noticed while debugging a query that BooleanQuery will rewrite itself to =
remove FILTER clauses that are also MUST as an optimization/simplification,=
 which makes total sense. So (+f:x #f:x) will become (+f:x).
However, shouldn't there also be another optimization to remove FILTER clau=
ses that are also SHOULD, while converting them to MUST? So, for eg. query =
(f:x #f:x) will become (+f:x).
I did an initial simple implementation and the tests seem to pass. Are ther=
e any cases where this does not hold?=C2=A0


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