/*
 * Copyright (c) 2020 Huawei Technologies Co.,Ltd.
 *
 * openGauss is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *
 *          http://license.coscl.org.cn/MulanPSL2
 *
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 * ---------------------------------------------------------------------------------------
 * 
 * randomplan.h
 *        prototypes for randomplan.c
 * 
 * 
 * IDENTIFICATION
 *        src/include/optimizer/randomplan.h
 *
 * ---------------------------------------------------------------------------------------
 */
#ifndef RANDOMPLAN_H
#define RANDOMPLAN_H

#include "nodes/relation.h"

#define OPTIMIZE_PLAN 0
#define RANDOM_PLAN_DEFAULT -1

extern int choose_random_option(int optionnum);
extern void set_inital_plan_seed();
extern uint32 get_inital_plan_seed();
extern List* get_random_path(RelOptInfo* parent_rel, Path** cheapest_startup_path, Path** cheapest_total_path);
extern char* get_random_plan_string();

#endif /* RANDOMPLAN_H */