72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_STORAGE_OB_COL_MAP_
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#define OCEANBASE_STORAGE_OB_COL_MAP_
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#include "lib/hash/ob_placement_hashmap.h"
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namespace oceanbase
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{
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namespace storage
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{
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class ObColMap
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{
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public:
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static const int64_t RP_LOCAL_NUM = 3;
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static const uint64_t FIRST_LEVEL_MAX_COL_NUM = 1024;
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static const uint64_t FIRST_LEVEL_MAP_COL_NUM = 1031;
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static const uint64_t FINAL_LEVEL_MAX_COL_NUM = 65536;
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public:
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ObColMap() :
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is_inited_(false),
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col_map_first_(),
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col_map_final_(NULL)
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{
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}
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virtual ~ObColMap()
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{
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destroy();
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}
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void destroy();
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int init(const int64_t col_count);
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int set_refactored(const uint64_t col_id, const int64_t col_idx);
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int get_refactored(const uint64_t col_id, int64_t &col_idx) const;
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const int64_t *get(const uint64_t col_id) const;
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int64_t *get(const uint64_t col_id);
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void reset();
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bool is_valid() const { return is_inited_; }
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int64_t count() const;
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typedef common::hash::ObPlacementHashMap<uint64_t,
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int64_t,
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FIRST_LEVEL_MAP_COL_NUM
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> ColMapFirst;
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typedef common::hash::ObPlacementHashMap<uint64_t,
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int64_t,
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FINAL_LEVEL_MAX_COL_NUM
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> ColMapFinal;
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private:
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bool is_inited_;
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ColMapFirst col_map_first_;
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ColMapFinal *col_map_final_;
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private:
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObColMap);
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};
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} // namespace storage
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} // namespace storage
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#endif // OCEANBASE_STORAGE_OB_COL_MAP_
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