diff options
Diffstat (limited to 'src/mongo/bson/simple_bsonobj_comparator.h')
-rw-r--r-- | src/mongo/bson/simple_bsonobj_comparator.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/mongo/bson/simple_bsonobj_comparator.h b/src/mongo/bson/simple_bsonobj_comparator.h new file mode 100644 index 00000000000..76d4070f059 --- /dev/null +++ b/src/mongo/bson/simple_bsonobj_comparator.h @@ -0,0 +1,49 @@ +/** + * Copyright (C) 2016 MongoDB Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * This program 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 Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * As a special exception, the copyright holders give permission to link the + * code of portions of this program with the OpenSSL library under certain + * conditions as described in each individual source file and distribute + * linked combinations including the program with the OpenSSL library. You + * must comply with the GNU Affero General Public License in all respects for + * all of the code used other than as permitted herein. If you modify file(s) + * with this exception, you may extend this exception to your version of the + * file(s), but you are not obligated to do so. If you do not wish to do so, + * delete this exception statement from your version. If you delete this + * exception statement from all source files in the program, then also delete + * it in the license file. + */ + +#pragma once + +#include "mongo/bson/bsonobj_comparator_interface.h" + +namespace mongo { + +/** + * A BSONObj comparator that has simple binary compare semantics. + */ +class SimpleBSONObjComparator final : public BSONObj::ComparatorInterface { +public: + // Global simple comparator for stateless BSONObj comparisons. BSONObj comparisons that require + // database logic, such as collations, much instantiate their own comparator. + static const SimpleBSONObjComparator kInstance; + + int compare(const BSONObj& lhs, const BSONObj& rhs) const final { + return lhs.woCompare(rhs, BSONObj(), true, nullptr); + } +}; + +} // namespace mongo |