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/**
* Copyright (C) 2019-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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 <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "mongo/db/pipeline/document_source.h"
#include "mongo/db/pipeline/pipeline.h"
#include "mongo/db/update/update_executor.h"
namespace mongo {
/**
* An UpdateExecutor representing a pipeline-style update.
*/
class PipelineExecutor : public UpdateExecutor {
public:
/**
* Initializes the node with an aggregation pipeline definition.
*/
explicit PipelineExecutor(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const std::vector<BSONObj>& pipeline,
boost::optional<BSONObj> constants = boost::none);
/**
* Replaces the document that 'applyParams.element' belongs to with 'val'. If 'val' does not
* contain an _id, the _id from the original document is preserved. 'applyParams.element' must
* be the root of the document. Always returns a result stating that indexes are affected when
* the replacement is not a noop.
*/
ApplyResult applyUpdate(ApplyParams applyParams) const final;
Value serialize() const final;
private:
boost::intrusive_ptr<ExpressionContext> _expCtx;
std::unique_ptr<Pipeline, PipelineDeleter> _pipeline;
};
} // namespace mongo
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