Mercurial > hg > release > thermostat-0.11
view storage/core/src/main/java/com/redhat/thermostat/storage/query/BinarySetMembershipOperator.java @ 1148:e597d72c3ecb
Add support for IN / NOT IN operators
This commit extends our query mechanism to handle queries of the form:
key IN [ x, y, z ], and key NOT IN [ x, y, z ]. I have added two new
Expression implementations, a BinarySetMembershipExpression and a
LiteralSetExpression. LiteralSetExpression corresponds to a list of
values, which can then be used as the right operand to a
BinarySetMembershipExpression. We have to explicitly pass the type of
value we're using in our list for deserialization.
I have also cleaned up the MongoExpressionParser in the process of
adding support for these new operators. UnaryLogicalExpressions now
can only take ComparisonExpressions, due to the restriction of how
$not is used in MongoDB.
Reviewed-by: vanaltj
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-June/007100.html
author | Elliott Baron <ebaron@redhat.com> |
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date | Fri, 28 Jun 2013 12:37:39 -0400 |
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/* * Copyright 2012, 2013 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.storage.query; /** * Operators to be used with {@link BinarySetMembershipExpression} */ public enum BinarySetMembershipOperator implements BinaryOperator { /** Compares if the left-hand value is equal to any of the * right-hand values */ IN, /** Compares if the left-hand value is not equal to all of the * right-hand values */ NOT_IN, }