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71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
#pragma once
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#include <DB/Core/Block.h>
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namespace DB
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{
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/** Column, that is just group of few another columns.
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*
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* For constant Tuples, see ColumnConstTuple.
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* Mixed constant/non-constant columns is prohibited in tuple
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* for implementation simplicity.
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*/
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class ColumnTuple final : public IColumn
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{
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private:
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Block data;
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Columns columns;
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template <bool positive>
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struct Less;
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public:
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ColumnTuple() {}
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ColumnTuple(Block data_);
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std::string getName() const override { return "Tuple"; }
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ColumnPtr cloneEmpty() const override;
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size_t size() const override
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{
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return data.rows();
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}
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Field operator[](size_t n) const override;
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void get(size_t n, Field & res) const override;
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StringRef getDataAt(size_t n) const override;
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void insertData(const char * pos, size_t length) override;
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void insert(const Field & x) override;
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void insertFrom(const IColumn & src_, size_t n) override;
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void insertDefault() override;
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void popBack(size_t n) override;
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StringRef serializeValueIntoArena(size_t n, Arena & arena, char const *& begin) const override;
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const char * deserializeAndInsertFromArena(const char * pos) override;
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void updateHashWithValue(size_t n, SipHash & hash) const override;
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void insertRangeFrom(const IColumn & src, size_t start, size_t length) override;
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ColumnPtr filter(const Filter & filt, ssize_t result_size_hint) const override;
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ColumnPtr permute(const Permutation & perm, size_t limit) const override;
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ColumnPtr replicate(const Offsets_t & offsets) const override;
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Columns scatter(ColumnIndex num_columns, const Selector & selector) const override;
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int compareAt(size_t n, size_t m, const IColumn & rhs, int nan_direction_hint) const override;
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void getExtremes(Field & min, Field & max) const override;
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void getPermutation(bool reverse, size_t limit, int nan_direction_hint, Permutation & res) const override;
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void reserve(size_t n) override;
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size_t byteSize() const override;
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size_t allocatedSize() const override;
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ColumnPtr convertToFullColumnIfConst() const override;
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const Block & getData() const { return data; }
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Block & getData() { return data; }
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const Columns & getColumns() const { return columns; }
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Columns & getColumns() { return columns; }
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};
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}
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