/**
 * Copyright (c) 2023 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_SHARE_OB_TABLE_RANGE_H_
#define OCEANBASE_SHARE_OB_TABLE_RANGE_H_

#include "share/scn.h"

namespace oceanbase
{
namespace share
{
struct ObScnRange
{
  OB_UNIS_VERSION(1);
public:
  static const SCN MIN_SCN;
  static const SCN MAX_SCN;

  ObScnRange();
  int64_t hash() const;

  OB_INLINE void reset()
  {
    start_scn_ = MIN_SCN;
    end_scn_ = MIN_SCN;
  }

  OB_INLINE bool is_valid() const
  {
    return start_scn_.is_valid() && end_scn_.is_valid() && end_scn_ >= start_scn_;
  }

  OB_INLINE bool is_empty() const
  {
    return end_scn_ == start_scn_;
  }

  OB_INLINE bool operator == (const ObScnRange &range) const
  {
    return start_scn_ == range.start_scn_
        && end_scn_ == range.end_scn_;
  }

  OB_INLINE bool operator != (const ObScnRange &range) const
  {
    return !this->operator==(range);
  }

  OB_INLINE bool contain(const SCN &scn) const
  {
    return is_valid() && start_scn_ < scn
      && end_scn_ >= scn;
  }
  TO_STRING_KV(K_(start_scn), K_(end_scn));

public:
  SCN start_scn_;
  SCN end_scn_;
};


} //namespace share
} //namespace oceanbase

#endif //OCEANBASE_SHARE_OB_TABLE_RANGE_H_