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40 lines
685 B
C++
40 lines
685 B
C++
#pragma once
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#include <cstddef>
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#include <vector>
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#include <functional>
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namespace DB
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{
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class IMergeSelector
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{
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public:
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struct Part
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{
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size_t size;
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time_t age;
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unsigned level;
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const void * data;
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};
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using PartsInPartition = std::vector<Part>;
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using Partitions = std::vector<PartsInPartition>;
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using CanMergePart = std::function<bool(const Part &)>;
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using CanMergeAdjacent = std::function<bool(const Part &, const Part &)>;
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virtual PartsInPartition select(
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const Partitions & partitions,
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CanMergePart can_merge_part,
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CanMergeAdjacent can_merge_adjacent,
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const size_t max_total_size_to_merge,
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bool aggressive_mode) = 0;
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virtual ~IMergeSelector() {}
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};
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}
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