mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-17 21:24:28 +00:00
94 lines
3.6 KiB
C++
94 lines
3.6 KiB
C++
#pragma once
|
|
|
|
#include <Core/Block.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** Column, that is just group of few another columns.
|
|
*
|
|
* For constant Tuples, see ColumnConst.
|
|
* Mixed constant/non-constant columns is prohibited in tuple
|
|
* for implementation simplicity.
|
|
*/
|
|
class ColumnTuple final : public COWHelper<IColumn, ColumnTuple>
|
|
{
|
|
private:
|
|
friend class COWHelper<IColumn, ColumnTuple>;
|
|
|
|
using TupleColumns = std::vector<WrappedPtr>;
|
|
TupleColumns columns;
|
|
|
|
template <bool positive>
|
|
struct Less;
|
|
|
|
explicit ColumnTuple(MutableColumns && columns);
|
|
ColumnTuple(const ColumnTuple &) = default;
|
|
|
|
public:
|
|
/** Create immutable column using immutable arguments. This arguments may be shared with other columns.
|
|
* Use IColumn::mutate in order to make mutable column and mutate shared nested columns.
|
|
*/
|
|
using Base = COWHelper<IColumn, ColumnTuple>;
|
|
static Ptr create(const Columns & columns);
|
|
static Ptr create(const TupleColumns & columns);
|
|
static Ptr create(Columns && arg) { return create(arg); }
|
|
|
|
template <typename Arg, typename = typename std::enable_if<std::is_rvalue_reference<Arg &&>::value>::type>
|
|
static MutablePtr create(Arg && arg) { return Base::create(std::forward<Arg>(arg)); }
|
|
|
|
std::string getName() const override;
|
|
const char * getFamilyName() const override { return "Tuple"; }
|
|
|
|
MutableColumnPtr cloneEmpty() const override;
|
|
MutableColumnPtr cloneResized(size_t size) const override;
|
|
|
|
size_t size() const override
|
|
{
|
|
return columns.at(0)->size();
|
|
}
|
|
|
|
Field operator[](size_t n) const override;
|
|
void get(size_t n, Field & res) const override;
|
|
|
|
StringRef getDataAt(size_t n) const override;
|
|
void insertData(const char * pos, size_t length) override;
|
|
void insert(const Field & x) override;
|
|
void insertFrom(const IColumn & src_, size_t n) override;
|
|
void insertDefault() override;
|
|
void popBack(size_t n) override;
|
|
StringRef serializeValueIntoArena(size_t n, Arena & arena, char const *& begin) const override;
|
|
const char * deserializeAndInsertFromArena(const char * pos) override;
|
|
void updateHashWithValue(size_t n, SipHash & hash) const override;
|
|
void insertRangeFrom(const IColumn & src, size_t start, size_t length) override;
|
|
ColumnPtr filter(const Filter & filt, ssize_t result_size_hint) const override;
|
|
ColumnPtr permute(const Permutation & perm, size_t limit) const override;
|
|
ColumnPtr index(const IColumn & indexes, size_t limit) const override;
|
|
ColumnPtr replicate(const Offsets & offsets) const override;
|
|
MutableColumns scatter(ColumnIndex num_columns, const Selector & selector) const override;
|
|
void gather(ColumnGathererStream & gatherer_stream) override;
|
|
int compareAt(size_t n, size_t m, const IColumn & rhs, int nan_direction_hint) const override;
|
|
void getExtremes(Field & min, Field & max) const override;
|
|
void getPermutation(bool reverse, size_t limit, int nan_direction_hint, Permutation & res) const override;
|
|
void reserve(size_t n) override;
|
|
size_t byteSize() const override;
|
|
size_t allocatedBytes() const override;
|
|
void protect() override;
|
|
void forEachSubcolumn(ColumnCallback callback) override;
|
|
bool structureEquals(const IColumn & rhs) const override;
|
|
|
|
size_t tupleSize() const { return columns.size(); }
|
|
|
|
const IColumn & getColumn(size_t idx) const { return *columns[idx]; }
|
|
IColumn & getColumn(size_t idx) { return *columns[idx]; }
|
|
|
|
const TupleColumns & getColumns() const { return columns; }
|
|
Columns getColumnsCopy() const { return {columns.begin(), columns.end()}; }
|
|
|
|
const ColumnPtr & getColumnPtr(size_t idx) const { return columns[idx]; }
|
|
};
|
|
|
|
|
|
}
|