mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 13:42:02 +00:00
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
#pragma once
|
|
|
|
#include <DB/Common/HashTable/TwoLevelHashTable.h>
|
|
#include <DB/Common/HashTable/HashMap.h>
|
|
|
|
|
|
template
|
|
<
|
|
typename Key,
|
|
typename Cell,
|
|
typename Hash = DefaultHash<Key>,
|
|
typename Grower = TwoLevelHashTableGrower<>,
|
|
typename Allocator = HashTableAllocator
|
|
>
|
|
class TwoLevelHashMapTable : public TwoLevelHashTable<Key, Cell, Hash, Grower, Allocator, HashMapTable<Key, Cell, Hash, Grower, Allocator>>
|
|
{
|
|
public:
|
|
using key_type = Key;
|
|
using mapped_type = typename Cell::Mapped;
|
|
using value_type = typename Cell::value_type;
|
|
|
|
using TwoLevelHashTable<Key, Cell, Hash, Grower, Allocator, HashMapTable<Key, Cell, Hash, Grower, Allocator> >::TwoLevelHashTable;
|
|
|
|
mapped_type & ALWAYS_INLINE operator[](Key x)
|
|
{
|
|
typename TwoLevelHashMapTable::iterator it;
|
|
bool inserted;
|
|
this->emplace(x, it, inserted);
|
|
|
|
if (inserted)
|
|
new(&it->second) mapped_type();
|
|
|
|
return it->second;
|
|
}
|
|
};
|
|
|
|
|
|
template
|
|
<
|
|
typename Key,
|
|
typename Mapped,
|
|
typename Hash = DefaultHash<Key>,
|
|
typename Grower = TwoLevelHashTableGrower<>,
|
|
typename Allocator = HashTableAllocator
|
|
>
|
|
using TwoLevelHashMap = TwoLevelHashMapTable<Key, HashMapCell<Key, Mapped, Hash>, Hash, Grower, Allocator>;
|
|
|
|
|
|
template
|
|
<
|
|
typename Key,
|
|
typename Mapped,
|
|
typename Hash = DefaultHash<Key>,
|
|
typename Grower = TwoLevelHashTableGrower<>,
|
|
typename Allocator = HashTableAllocator
|
|
>
|
|
using TwoLevelHashMapWithSavedHash = TwoLevelHashMapTable<Key, HashMapCellWithSavedHash<Key, Mapped, Hash>, Hash, Grower, Allocator>;
|