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43 lines
986 B
C++
43 lines
986 B
C++
#pragma once
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#include <Disks/IDisk.h>
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#include <Storages/MarkCache.h>
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namespace DB
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{
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struct MergeTreeIndexGranularityInfo;
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class MergeTreeMarksLoader
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{
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public:
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using MarksPtr = MarkCache::MappedPtr;
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MergeTreeMarksLoader(
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DiskPtr disk_,
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MarkCache * mark_cache_,
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const String & mrk_path,
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size_t marks_count_,
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const MergeTreeIndexGranularityInfo & index_granularity_info_,
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bool save_marks_in_cache_,
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size_t columns_in_mark_ = 1);
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const MarkInCompressedFile & getMark(size_t row_index, size_t column_index = 0);
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bool initialized() const { return marks != nullptr; }
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private:
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DiskPtr disk;
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MarkCache * mark_cache = nullptr;
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String mrk_path;
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size_t marks_count;
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const MergeTreeIndexGranularityInfo & index_granularity_info;
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bool save_marks_in_cache = false;
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size_t columns_in_mark;
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MarkCache::MappedPtr marks;
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void loadMarks();
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MarkCache::MappedPtr loadMarksImpl();
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};
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}
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