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Diffstat (limited to 'src/mongo/db/views/resolved_view.h')
-rw-r--r-- | src/mongo/db/views/resolved_view.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/mongo/db/views/resolved_view.h b/src/mongo/db/views/resolved_view.h new file mode 100644 index 00000000000..93ad3a7e709 --- /dev/null +++ b/src/mongo/db/views/resolved_view.h @@ -0,0 +1,78 @@ +/** + * 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 <vector> + +#include "mongo/base/status_with.h" +#include "mongo/bson/bsonobj.h" +#include "mongo/db/namespace_string.h" + +namespace mongo { + +class AggregationRequest; + +/** + * Represents a resolved definition, composed of a base collection namespace and a pipeline + * built from one or more views. + */ +class ResolvedView { +public: + ResolvedView(const NamespaceString& collectionNs, const std::vector<BSONObj>& pipeline) + : _namespace(std::move(collectionNs)), _pipeline(std::move(pipeline)) {} + + /** + * Returns whether 'commandResponseObj' contains a CommandOnShardedViewNotSupportedOnMongod + * error and resolved view definition. + */ + static bool isResolvedViewErrorResponse(BSONObj commandResponseObj); + + static ResolvedView fromBSON(BSONObj commandResponseObj); + + /** + * Convert an aggregation command on a view to the equivalent command against the views + * underlying collection. + */ + StatusWith<BSONObj> asExpandedViewAggregation(const BSONObj& aggCommand) const; + StatusWith<BSONObj> asExpandedViewAggregation(const AggregationRequest& aggRequest) const; + + const NamespaceString& getNamespace() const { + return _namespace; + } + + const std::vector<BSONObj>& getPipeline() const { + return _pipeline; + } + +private: + NamespaceString _namespace; + std::vector<BSONObj> _pipeline; +}; + +} // namespace mongo |