session.h

/* Copyright (c) 2021 OceanBase and/or its affiliates. All rights reserved.
miniob 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. */
 
//
// Created by Wangyunlai on 2021/5/12.
//
 
#pragma once
 
#include <string>
 
class Trx;
class Db;
class SessionEvent;
 
class Session 
{
public:
  static Session &default_session();
 
public:
  Session() = default;
  ~Session();
 
  Session(const Session &other);
  void operator=(Session &) = delete;
 
  const char *get_current_db_name() const;
  Db *get_current_db() const;
 
  void set_current_db(const std::string &dbname);
 
  void set_trx_multi_operation_mode(bool multi_operation_mode);
 
  bool is_trx_multi_operation_mode() const;
 
  Trx *current_trx();
 
  void set_current_request(SessionEvent *request);
 
  SessionEvent *current_request() const;
 
  void set_sql_debug(bool sql_debug) { sql_debug_ = sql_debug; }
  bool sql_debug_on() const { return sql_debug_; }
 
  static void set_current_session(Session *session);
 
  static Session *current_session();
  
private:
  Db *db_ = nullptr;
  Trx *trx_ = nullptr;
  SessionEvent *current_request_ = nullptr; 
  bool trx_multi_operation_mode_ = false;   
  bool sql_debug_ = false;                  
};