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https://github.com/ClickHouse/ClickHouse.git
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561 lines
20 KiB
C++
561 lines
20 KiB
C++
#pragma once
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#include <Poco/NumberFormatter.h>
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#include <DB/DataTypes/DataTypesNumberFixed.h>
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#include <DB/DataTypes/DataTypesNumberVariable.h>
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#include <DB/Functions/IFunction.h>
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#include <DB/Functions/NumberTraits.h>
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namespace DB
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{
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/** Арифметические функции: +, -, *, /, %,
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* div (целочисленное деление), унарный минус.
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*/
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template<typename A, typename B>
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struct PlusImpl
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{
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typedef typename NumberTraits::ResultOfAdditionMultiplication<A, B>::Type ResultType;
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static void vector_vector(const std::vector<A> & a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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/// Далее везде, static_cast - чтобы не было неправильного результата в выражениях вида Int64 c = UInt32(a) * Int32(-1).
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) + b[i];
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}
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static void vector_constant(const std::vector<A> & a, B b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) + b;
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}
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static void constant_vector(A a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = b.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a) + b[i];
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}
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static void constant_constant(A a, B b, ResultType & c)
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{
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c = static_cast<ResultType>(a) + b;
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}
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};
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template<typename A, typename B>
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struct MultiplyImpl
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{
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typedef typename NumberTraits::ResultOfAdditionMultiplication<A, B>::Type ResultType;
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static void vector_vector(const std::vector<A> & a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) * b[i];
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}
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static void vector_constant(const std::vector<A> & a, B b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) * b;
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}
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static void constant_vector(A a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = b.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a) * b[i];
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}
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static void constant_constant(A a, B b, ResultType & c)
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{
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c = static_cast<ResultType>(a) * b;
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}
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};
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template<typename A, typename B>
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struct MinusImpl
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{
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typedef typename NumberTraits::ResultOfSubtraction<A, B>::Type ResultType;
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static void vector_vector(const std::vector<A> & a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) - b[i];
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}
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static void vector_constant(const std::vector<A> & a, B b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) - b;
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}
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static void constant_vector(A a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = b.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a) - b[i];
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}
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static void constant_constant(A a, B b, ResultType & c)
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{
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c = static_cast<ResultType>(a) - b;
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}
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};
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template<typename A, typename B>
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struct DivideFloatingImpl
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{
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typedef typename NumberTraits::ResultOfFloatingPointDivision<A, B>::Type ResultType;
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static void vector_vector(const std::vector<A> & a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) / b[i];
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}
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static void vector_constant(const std::vector<A> & a, B b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) / b;
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}
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static void constant_vector(A a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = b.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a) / b[i];
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}
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static void constant_constant(A a, B b, ResultType & c)
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{
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c = static_cast<ResultType>(a) / b;
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}
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};
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template<typename A, typename B>
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struct DivideIntegralImpl
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{
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typedef typename NumberTraits::ResultOfIntegerDivision<A, B>::Type ResultType;
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static void vector_vector(const std::vector<A> & a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) / b[i];
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}
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static void vector_constant(const std::vector<A> & a, B b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a[i]) / b;
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}
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static void constant_vector(A a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = b.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = static_cast<ResultType>(a) / b[i];
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}
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static void constant_constant(A a, B b, ResultType & c)
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{
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c = static_cast<ResultType>(a) / b;
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}
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};
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template<typename A, typename B>
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struct ModuloImpl
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{
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typedef typename NumberTraits::ResultOfModulo<A, B>::Type ResultType;
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static void vector_vector(const std::vector<A> & a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = typename NumberTraits::ToInteger<A>::Type(a[i])
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% typename NumberTraits::ToInteger<A>::Type(b[i]);
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}
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static void vector_constant(const std::vector<A> & a, B b, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = typename NumberTraits::ToInteger<A>::Type(a[i])
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% typename NumberTraits::ToInteger<A>::Type(b);
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}
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static void constant_vector(A a, const std::vector<B> & b, std::vector<ResultType> & c)
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{
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size_t size = b.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = typename NumberTraits::ToInteger<A>::Type(a)
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% typename NumberTraits::ToInteger<A>::Type(b[i]);
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}
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static void constant_constant(A a, B b, ResultType & c)
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{
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c = typename NumberTraits::ToInteger<A>::Type(a)
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% typename NumberTraits::ToInteger<A>::Type(b);
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}
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};
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template<typename A>
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struct NegateImpl
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{
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typedef typename NumberTraits::ResultOfNegate<A>::Type ResultType;
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static void vector(const std::vector<A> & a, std::vector<ResultType> & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = -a[i];
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}
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static void constant(A a, ResultType & c)
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{
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c = -a;
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}
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};
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template <template <typename, typename> class Impl, typename Name>
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class FunctionBinaryArithmetic : public IFunction
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{
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private:
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template <typename T0, typename T1>
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bool checkRightType(const DataTypes & arguments, DataTypePtr & type_res) const
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{
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if (dynamic_cast<const T1 *>(&*arguments[1]))
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{
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type_res = new typename DataTypeFromFieldType<
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typename Impl<typename T0::FieldType, typename T1::FieldType>::ResultType>::Type;
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return true;
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}
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return false;
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}
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template <typename T0>
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bool checkLeftType(const DataTypes & arguments, DataTypePtr & type_res) const
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{
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if (dynamic_cast<const T0 *>(&*arguments[0]))
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{
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if ( checkRightType<T0, DataTypeUInt8>(arguments, type_res)
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|| checkRightType<T0, DataTypeUInt16>(arguments, type_res)
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|| checkRightType<T0, DataTypeUInt32>(arguments, type_res)
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|| checkRightType<T0, DataTypeUInt64>(arguments, type_res)
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|| checkRightType<T0, DataTypeInt8>(arguments, type_res)
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|| checkRightType<T0, DataTypeInt16>(arguments, type_res)
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|| checkRightType<T0, DataTypeInt32>(arguments, type_res)
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|| checkRightType<T0, DataTypeInt64>(arguments, type_res)
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|| checkRightType<T0, DataTypeFloat32>(arguments, type_res)
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|| checkRightType<T0, DataTypeFloat64>(arguments, type_res)
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|| checkRightType<T0, DataTypeVarUInt>(arguments, type_res)
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|| checkRightType<T0, DataTypeVarInt>(arguments, type_res))
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return true;
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else
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throw Exception("Illegal type " + arguments[1]->getName() + " of second argument of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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}
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return false;
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}
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template <typename T0, typename T1>
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bool executeRightType(Block & block, const ColumnNumbers & arguments, size_t result, const ColumnVector<T0> * col_left)
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{
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if (ColumnVector<T1> * col_right = dynamic_cast<ColumnVector<T1> *>(&*block.getByPosition(arguments[1]).column))
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{
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typedef typename Impl<T0, T1>::ResultType ResultType;
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ColumnVector<ResultType> * col_res = new ColumnVector<ResultType>;
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block.getByPosition(result).column = col_res;
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typename ColumnVector<ResultType>::Container_t & vec_res = col_res->getData();
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vec_res.resize(col_left->getData().size());
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Impl<T0, T1>::vector_vector(col_left->getData(), col_right->getData(), vec_res);
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return true;
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}
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else if (ColumnConst<T1> * col_right = dynamic_cast<ColumnConst<T1> *>(&*block.getByPosition(arguments[1]).column))
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{
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typedef typename Impl<T0, T1>::ResultType ResultType;
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ColumnVector<ResultType> * col_res = new ColumnVector<ResultType>;
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block.getByPosition(result).column = col_res;
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typename ColumnVector<ResultType>::Container_t & vec_res = col_res->getData();
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vec_res.resize(col_left->getData().size());
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Impl<T0, T1>::vector_constant(col_left->getData(), col_right->getData(), vec_res);
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return true;
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}
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return false;
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}
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template <typename T0, typename T1>
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bool executeConstRightType(Block & block, const ColumnNumbers & arguments, size_t result, const ColumnConst<T0> * col_left)
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{
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if (ColumnVector<T1> * col_right = dynamic_cast<ColumnVector<T1> *>(&*block.getByPosition(arguments[1]).column))
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{
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typedef typename Impl<T0, T1>::ResultType ResultType;
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ColumnVector<ResultType> * col_res = new ColumnVector<ResultType>;
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block.getByPosition(result).column = col_res;
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typename ColumnVector<ResultType>::Container_t & vec_res = col_res->getData();
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vec_res.resize(col_left->size());
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Impl<T0, T1>::constant_vector(col_left->getData(), col_right->getData(), vec_res);
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return true;
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}
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else if (ColumnConst<T1> * col_right = dynamic_cast<ColumnConst<T1> *>(&*block.getByPosition(arguments[1]).column))
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{
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typedef typename Impl<T0, T1>::ResultType ResultType;
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ResultType res = 0;
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Impl<T0, T1>::constant_constant(col_left->getData(), col_right->getData(), res);
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ColumnConst<ResultType> * col_res = new ColumnConst<ResultType>(col_left->size(), res);
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block.getByPosition(result).column = col_res;
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return true;
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}
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return false;
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}
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template <typename T0>
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bool executeLeftType(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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if (ColumnVector<T0> * col_left = dynamic_cast<ColumnVector<T0> *>(&*block.getByPosition(arguments[0]).column))
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{
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if ( executeRightType<T0, UInt8>(block, arguments, result, col_left)
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|| executeRightType<T0, UInt16>(block, arguments, result, col_left)
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|| executeRightType<T0, UInt32>(block, arguments, result, col_left)
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|| executeRightType<T0, UInt64>(block, arguments, result, col_left)
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|| executeRightType<T0, Int8>(block, arguments, result, col_left)
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|| executeRightType<T0, Int16>(block, arguments, result, col_left)
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|| executeRightType<T0, Int32>(block, arguments, result, col_left)
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|| executeRightType<T0, Int64>(block, arguments, result, col_left)
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|| executeRightType<T0, Float32>(block, arguments, result, col_left)
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|| executeRightType<T0, Float64>(block, arguments, result, col_left))
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return true;
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else
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throw Exception("Illegal column " + block.getByPosition(arguments[1]).column->getName()
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+ " of second argument of function " + getName(),
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ErrorCodes::ILLEGAL_COLUMN);
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}
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else if (ColumnConst<T0> * col_left = dynamic_cast<ColumnConst<T0> *>(&*block.getByPosition(arguments[0]).column))
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{
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if ( executeConstRightType<T0, UInt8>(block, arguments, result, col_left)
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|| executeConstRightType<T0, UInt16>(block, arguments, result, col_left)
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|| executeConstRightType<T0, UInt32>(block, arguments, result, col_left)
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|| executeConstRightType<T0, UInt64>(block, arguments, result, col_left)
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|| executeConstRightType<T0, Int8>(block, arguments, result, col_left)
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|| executeConstRightType<T0, Int16>(block, arguments, result, col_left)
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|| executeConstRightType<T0, Int32>(block, arguments, result, col_left)
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|| executeConstRightType<T0, Int64>(block, arguments, result, col_left)
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|| executeConstRightType<T0, Float32>(block, arguments, result, col_left)
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|| executeConstRightType<T0, Float64>(block, arguments, result, col_left))
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return true;
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else
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throw Exception("Illegal column " + block.getByPosition(arguments[1]).column->getName()
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+ " of second argument of function " + getName(),
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ErrorCodes::ILLEGAL_COLUMN);
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}
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return false;
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}
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public:
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/// Получить имя функции.
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String getName() const
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{
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return Name::get();
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}
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/// Получить типы результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
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DataTypePtr getReturnType(const DataTypes & arguments) const
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{
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if (arguments.size() != 2)
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throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
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+ Poco::NumberFormatter::format(arguments.size()) + ", should be 2.",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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DataTypePtr type_res;
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if (!( checkLeftType<DataTypeUInt8>(arguments, type_res)
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|| checkLeftType<DataTypeUInt16>(arguments, type_res)
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|| checkLeftType<DataTypeUInt32>(arguments, type_res)
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|| checkLeftType<DataTypeUInt64>(arguments, type_res)
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|| checkLeftType<DataTypeInt8>(arguments, type_res)
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|| checkLeftType<DataTypeInt16>(arguments, type_res)
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|| checkLeftType<DataTypeInt32>(arguments, type_res)
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|| checkLeftType<DataTypeInt64>(arguments, type_res)
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|| checkLeftType<DataTypeFloat32>(arguments, type_res)
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|| checkLeftType<DataTypeFloat64>(arguments, type_res)
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|| checkLeftType<DataTypeVarUInt>(arguments, type_res)
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|| checkLeftType<DataTypeVarInt>(arguments, type_res)))
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throw Exception("Illegal type " + arguments[0]->getName() + " of first argument of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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return type_res;
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}
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/// Выполнить функцию над блоком.
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void execute(Block & block, const ColumnNumbers & arguments, size_t result)
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{
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if (!( executeLeftType<UInt8>(block, arguments, result)
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|| executeLeftType<UInt16>(block, arguments, result)
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|| executeLeftType<UInt32>(block, arguments, result)
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|| executeLeftType<UInt64>(block, arguments, result)
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|| executeLeftType<Int8>(block, arguments, result)
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|| executeLeftType<Int16>(block, arguments, result)
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|| executeLeftType<Int32>(block, arguments, result)
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|| executeLeftType<Int64>(block, arguments, result)
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|| executeLeftType<Float32>(block, arguments, result)
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|| executeLeftType<Float64>(block, arguments, result)))
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throw Exception("Illegal column " + block.getByPosition(arguments[0]).column->getName()
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+ " of first argument of function " + getName(),
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ErrorCodes::ILLEGAL_COLUMN);
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}
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};
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template <template <typename> class Impl, typename Name>
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class FunctionUnaryArithmetic : public IFunction
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{
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private:
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template <typename T0>
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bool checkType(const DataTypes & arguments, DataTypePtr & result) const
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{
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if (dynamic_cast<const T0 *>(&*arguments[0]))
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{
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result = new typename DataTypeFromFieldType<
|
|
typename Impl<typename T0::FieldType>::ResultType>::Type;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
template <typename T0>
|
|
bool executeType(Block & block, const ColumnNumbers & arguments, size_t result)
|
|
{
|
|
if (ColumnVector<T0> * col = dynamic_cast<ColumnVector<T0> *>(&*block.getByPosition(arguments[0]).column))
|
|
{
|
|
typedef typename Impl<T0>::ResultType ResultType;
|
|
|
|
ColumnVector<ResultType> * col_res = new ColumnVector<ResultType>;
|
|
block.getByPosition(result).column = col_res;
|
|
|
|
typename ColumnVector<ResultType>::Container_t & vec_res = col_res->getData();
|
|
vec_res.resize(col->getData().size());
|
|
Impl<T0>::vector(col->getData(), vec_res);
|
|
|
|
return true;
|
|
}
|
|
else if (ColumnConst<T0> * col = dynamic_cast<ColumnConst<T0> *>(&*block.getByPosition(arguments[0]).column))
|
|
{
|
|
typedef typename Impl<T0>::ResultType ResultType;
|
|
|
|
ResultType res = 0;
|
|
Impl<T0>::constant(col->getData(), res);
|
|
|
|
ColumnConst<ResultType> * col_res = new ColumnConst<ResultType>(col->size(), res);
|
|
block.getByPosition(result).column = col_res;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public:
|
|
/// Получить имя функции.
|
|
String getName() const
|
|
{
|
|
return Name::get();
|
|
}
|
|
|
|
/// Получить типы результата по типам аргументов. Если функция неприменима для данных аргументов - кинуть исключение.
|
|
DataTypePtr getReturnType(const DataTypes & arguments) const
|
|
{
|
|
if (arguments.size() != 1)
|
|
throw Exception("Number of arguments for function " + getName() + " doesn't match: passed "
|
|
+ Poco::NumberFormatter::format(arguments.size()) + ", should be 1.",
|
|
ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
|
|
|
|
DataTypePtr result;
|
|
|
|
if (!( checkType<DataTypeUInt8>(arguments, result)
|
|
|| checkType<DataTypeUInt16>(arguments, result)
|
|
|| checkType<DataTypeUInt32>(arguments, result)
|
|
|| checkType<DataTypeUInt64>(arguments, result)
|
|
|| checkType<DataTypeInt8>(arguments, result)
|
|
|| checkType<DataTypeInt16>(arguments, result)
|
|
|| checkType<DataTypeInt32>(arguments, result)
|
|
|| checkType<DataTypeInt64>(arguments, result)
|
|
|| checkType<DataTypeFloat32>(arguments, result)
|
|
|| checkType<DataTypeFloat64>(arguments, result)
|
|
|| checkType<DataTypeVarUInt>(arguments, result)
|
|
|| checkType<DataTypeVarInt>(arguments, result)))
|
|
throw Exception("Illegal type " + arguments[0]->getName() + " of argument of function " + getName(),
|
|
ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
|
|
|
|
return result;
|
|
}
|
|
|
|
/// Выполнить функцию над блоком.
|
|
void execute(Block & block, const ColumnNumbers & arguments, size_t result)
|
|
{
|
|
if (!( executeType<UInt8>(block, arguments, result)
|
|
|| executeType<UInt16>(block, arguments, result)
|
|
|| executeType<UInt32>(block, arguments, result)
|
|
|| executeType<UInt64>(block, arguments, result)
|
|
|| executeType<Int8>(block, arguments, result)
|
|
|| executeType<Int16>(block, arguments, result)
|
|
|| executeType<Int32>(block, arguments, result)
|
|
|| executeType<Int64>(block, arguments, result)
|
|
|| executeType<Float32>(block, arguments, result)
|
|
|| executeType<Float64>(block, arguments, result)))
|
|
throw Exception("Illegal column " + block.getByPosition(arguments[0]).column->getName()
|
|
+ " of argument of function " + getName(),
|
|
ErrorCodes::ILLEGAL_COLUMN);
|
|
}
|
|
};
|
|
|
|
|
|
struct NamePlus { static const char * get() { return "plus"; } };
|
|
struct NameMinus { static const char * get() { return "minus"; } };
|
|
struct NameMultiply { static const char * get() { return "multiply"; } };
|
|
struct NameDivideFloating { static const char * get() { return "divide"; } };
|
|
struct NameDivideIntegral { static const char * get() { return "div"; } };
|
|
struct NameModulo { static const char * get() { return "modulo"; } };
|
|
struct NameNegate { static const char * get() { return "negate"; } };
|
|
|
|
typedef FunctionBinaryArithmetic<PlusImpl, NamePlus> FunctionPlus;
|
|
typedef FunctionBinaryArithmetic<MinusImpl, NameMinus> FunctionMinus;
|
|
typedef FunctionBinaryArithmetic<MultiplyImpl, NameMultiply> FunctionMultiply;
|
|
typedef FunctionBinaryArithmetic<DivideFloatingImpl, NameDivideFloating> FunctionDivideFloating;
|
|
typedef FunctionBinaryArithmetic<DivideIntegralImpl, NameDivideIntegral> FunctionDivideIntegral;
|
|
typedef FunctionBinaryArithmetic<ModuloImpl, NameModulo> FunctionModulo;
|
|
typedef FunctionUnaryArithmetic<NegateImpl, NameNegate> FunctionNegate;
|
|
|
|
|
|
}
|