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/**
* Copyright (C) 2022-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/optimizer/node_defs.h"
#include "mongo/db/query/optimizer/props.h"
namespace mongo::optimizer::cascades {
class Memo;
/**
* Interface for deriving properties. Typically we supply memo, but may derive without a memo as
* long as metadata is provided.
*/
class LogicalPropsInterface {
public:
virtual ~LogicalPropsInterface() = default;
using NodePropsMap = opt::unordered_map<const Node*, properties::LogicalProps>;
virtual properties::LogicalProps deriveProps(const Metadata& metadata,
ABT::reference_type nodeRef,
NodePropsMap* nodePropsMap = nullptr,
const Memo* memo = nullptr,
GroupIdType groupId = -1) const = 0;
};
/**
* Interface for deriving CE for a newly added logical node in a new memo group.
*/
class CEInterface {
public:
virtual ~CEInterface() = default;
virtual CEType deriveCE(const Metadata& metadata,
const Memo& memo,
const properties::LogicalProps& logicalProps,
ABT::reference_type logicalNodeRef) const = 0;
};
/**
* Interface for deriving costs and adjusted CE (based on physical props) for a physical node.
*/
class CostingInterface {
public:
virtual ~CostingInterface() = default;
virtual CostAndCE deriveCost(const Metadata& metadata,
const Memo& memo,
const properties::PhysProps& physProps,
ABT::reference_type physNodeRef,
const ChildPropsType& childProps,
const NodeCEMap& nodeCEMap) const = 0;
};
} // namespace mongo::optimizer::cascades
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