/**
 * Copyright (c) 2021 OceanBase
 * OceanBase CE is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *          http://license.coscl.org.cn/MulanPubL-2.0
 * 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 PubL v2 for more details.
 */

#ifndef OCEANBASE_SQL_OB_LOG_LINK_H
#define OCEANBASE_SQL_OB_LOG_LINK_H

#include "sql/optimizer/ob_logical_operator.h"
#include "sql/optimizer/ob_log_plan.h"
namespace oceanbase
{
namespace sql
{

typedef common::ObIArray<common::ObString> ObStringIArray;

enum LinkType {
  NONE = 0,
  SELECT,
  INSERT,
  UPDATE,
  DELETE,
  MERGE_INTO
};

class ObLogLink : public ObLogicalOperator
{
public:
  ObLogLink(ObLogPlan &plan);
  virtual ~ObLogLink() {}
  virtual int est_cost() override;
  virtual int compute_sharding_info() override;
  virtual int compute_op_parallel_and_server_info() override;
  inline const common::ObIArray<ObParamPosIdx> &get_param_infos() const { return param_infos_; }
  inline const char *get_stmt_fmt_buf() const { return stmt_fmt_buf_; }
  inline int32_t get_stmt_fmt_len() const { return stmt_fmt_len_; }
  int gen_link_stmt_param_infos();
  virtual int set_link_stmt(const ObDMLStmt* stmt = NULL);
  inline void set_reverse_link(bool reverse_link) { is_reverse_link_ = reverse_link; }
  inline bool get_reverse_link() { return is_reverse_link_; }
  int mark_exec_params(ObDMLStmt *stmt);
protected:
  virtual int get_plan_item_info(PlanText &plan_text,
                                ObSqlPlanItem &plan_item) override;
private:
  int print_link_stmt(char *buf, int64_t buf_len);
  virtual bool print_flashback_query() const { return false; };
protected:
  common::ObIAllocator &allocator_;
  char *stmt_fmt_buf_;
  int32_t stmt_fmt_len_;
  bool is_reverse_link_;
  uint64_t tm_dblink_id_;
  common::ObSEArray<ObParamPosIdx, 16, common::ModulePageAllocator, true> param_infos_;
};

} // namespace sql
} // namespace oceanbase

#endif // OCEANBASE_SQL_OB_LOG_LINK_H