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52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
#pragma once
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#include <IO/WriteBufferFromFile.h>
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#include <IO/ReadBufferFromFile.h>
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#include <unordered_map>
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namespace DB
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{
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/// Minimal and maximal ttl for column or table
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struct MergeTreeDataPartTTLInfo
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{
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time_t min = 0;
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time_t max = 0;
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void update(time_t time)
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{
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if (time && (!min || time < min))
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min = time;
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max = std::max(time, max);
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}
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void update(const MergeTreeDataPartTTLInfo & other_info)
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{
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if (other_info.min && (!min || other_info.min < min))
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min = other_info.min;
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max = std::max(other_info.max, max);
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}
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};
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/// PartTTLInfo for all columns and table with minimal ttl for whole part
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struct MergeTreeDataPartTTLInfos
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{
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std::unordered_map<String, MergeTreeDataPartTTLInfo> columns_ttl;
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MergeTreeDataPartTTLInfo table_ttl;
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time_t part_min_ttl = 0;
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void read(ReadBuffer & in);
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void write(WriteBuffer & out) const;
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void update(const MergeTreeDataPartTTLInfos & other_infos);
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void updatePartMinTTL(time_t time)
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{
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if (time && (!part_min_ttl || time < part_min_ttl))
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part_min_ttl = time;
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}
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};
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}
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