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author | Nick Zolnierz <nicholas.zolnierz@mongodb.com> | 2017-06-20 12:17:52 -0400 |
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committer | Nick Zolnierz <nicholas.zolnierz@mongodb.com> | 2017-06-27 12:10:12 -0400 |
commit | a92eb118cc8500a9c4286e8ef28cb26ea3f4e238 (patch) | |
tree | c922f2004397ac4b7441685610baf68a7eb46da0 /src/mongo/db/matcher/schema/expression_internal_schema_max_items.h | |
parent | 18bc61d22123da5897d275eb92576522a1bab4de (diff) | |
download | mongo-a92eb118cc8500a9c4286e8ef28cb26ea3f4e238.tar.gz |
SERVER-29587: Create $_internalSchemaMinItems and $_internalSchemaMaxItems MatchExpressions
Diffstat (limited to 'src/mongo/db/matcher/schema/expression_internal_schema_max_items.h')
-rw-r--r-- | src/mongo/db/matcher/schema/expression_internal_schema_max_items.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/mongo/db/matcher/schema/expression_internal_schema_max_items.h b/src/mongo/db/matcher/schema/expression_internal_schema_max_items.h new file mode 100644 index 00000000000..3ba965e298a --- /dev/null +++ b/src/mongo/db/matcher/schema/expression_internal_schema_max_items.h @@ -0,0 +1,60 @@ +/** + * Copyright (C) 2017 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/db/matcher/schema/expression_internal_schema_num_array_items.h" + +namespace mongo { + +/** + * MatchExpression for $_internalSchemaMaxItems keyword. Takes an integer argument that indicates + * the maximum amount of elements in an array. + */ +class InternalSchemaMaxItemsMatchExpression final + : public InternalSchemaNumArrayItemsMatchExpression { +public: + InternalSchemaMaxItemsMatchExpression() + : InternalSchemaNumArrayItemsMatchExpression(INTERNAL_SCHEMA_MAX_ITEMS, + "$_internalSchemaMaxItems"_sd) {} + + bool matchesArray(const BSONObj& anArray, MatchDetails* details) const final { + return (anArray.nFields() <= numItems()); + } + + std::unique_ptr<MatchExpression> shallowClone() const final { + std::unique_ptr<InternalSchemaMaxItemsMatchExpression> maxItems = + stdx::make_unique<InternalSchemaMaxItemsMatchExpression>(); + invariantOK(maxItems->init(path(), numItems())); + if (getTag()) { + maxItems->setTag(getTag()->clone()); + } + return std::move(maxItems); + } +}; +} // namespace mongo |