mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-06 08:30:54 +00:00
36 lines
752 B
C++
36 lines
752 B
C++
|
#include <Storages/MarkCache.h>
|
||
|
|
||
|
namespace DB
|
||
|
{
|
||
|
|
||
|
class MergeTreeMarksLoader
|
||
|
{
|
||
|
public:
|
||
|
using MarksPtr = MarkCache::MappedPtr;
|
||
|
using LoadFunc = std::function<MarksPtr()>;
|
||
|
|
||
|
MergeTreeMarksLoader() {}
|
||
|
|
||
|
MergeTreeMarksLoader(MarkCache * mark_cache_,
|
||
|
const String & mrk_path_,
|
||
|
const LoadFunc & load_func_,
|
||
|
bool save_marks_in_cache_,
|
||
|
size_t columns_num_ = 1);
|
||
|
|
||
|
const MarkInCompressedFile & getMark(size_t row_index, size_t column_index = 0);
|
||
|
|
||
|
bool initialized() const { return marks != nullptr; }
|
||
|
|
||
|
private:
|
||
|
MarkCache * mark_cache = nullptr;
|
||
|
String mrk_path;
|
||
|
LoadFunc load_func;
|
||
|
bool save_marks_in_cache = false;
|
||
|
size_t columns_num;
|
||
|
MarksPtr marks;
|
||
|
|
||
|
void loadMarks();
|
||
|
};
|
||
|
|
||
|
}
|