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/**
* Copyright (C) 2020-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 "mongo/db/query/sbe_plan_ranker.h"
#include "mongo/db/query/sbe_runtime_planner.h"
namespace mongo::sbe {
/**
* This runtime planner is used for rooted $or queries. It plans each clause of the $or
* individually, and then creates an overall query plan based on the winning plan from each
* clause.
*
* Uses the 'MultiPlanner' in order to pick best plans for the individual clauses.
*/
class SubPlanner final : public BaseRuntimePlanner {
public:
SubPlanner(OperationContext* opCtx,
Collection* collection,
const CanonicalQuery& cq,
const QueryPlannerParams& queryParams,
PlanYieldPolicySBE* yieldPolicy)
: BaseRuntimePlanner{opCtx, collection, cq, yieldPolicy}, _queryParams{queryParams} {}
plan_ranker::CandidatePlan plan(
std::vector<std::unique_ptr<QuerySolution>> solutions,
std::vector<std::pair<std::unique_ptr<PlanStage>, stage_builder::PlanStageData>> roots)
final;
private:
plan_ranker::CandidatePlan planWholeQuery() const;
// Query parameters used to create a query solution for each $or branch.
const QueryPlannerParams _queryParams;
};
} // namespace mongo::sbe
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