46 lines
1.6 KiB
C++
46 lines
1.6 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 OB_SSTABLE_ROW_MULTI_GETTER_H_
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#define OB_SSTABLE_ROW_MULTI_GETTER_H_
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#include "ob_sstable_row_getter.h"
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namespace oceanbase {
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namespace storage {
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class ObSSTableRowMultiGetter : public ObSSTableRowGetter {
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public:
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ObSSTableRowMultiGetter();
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virtual ~ObSSTableRowMultiGetter();
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virtual void reset();
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virtual void reuse() override;
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virtual int skip_range(int64_t range_idx, const common::ObStoreRowkey* gap_key, const bool include_gap_key) override;
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protected:
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virtual int get_handle_cnt(const void* query_range, int64_t& read_handle_cnt, int64_t& micro_handle_cnt);
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virtual int prefetch_read_handle(ObSSTableReadHandle& read_handle);
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virtual int get_range_count(const void* query_range, int64_t& range_count) const;
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virtual int get_skip_range_ctx(
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ObSSTableReadHandle& read_handle, const int64_t cur_micro_idx, ObSSTableSkipRangeCtx*& ctx) override;
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private:
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static const int64_t MULTIGET_READ_HANDLE_CNT = 512;
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static const int64_t MULTIGET_MICRO_HANDLE_CNT = 512;
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int32_t prefetch_idx_;
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};
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} // namespace storage
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} // namespace oceanbase
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#endif /* OB_SSTABLE_ROW_MULTI_GETTER_H_ */
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