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+/**
+ * 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