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67 lines
2.7 KiB
C++
67 lines
2.7 KiB
C++
#pragma once
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#include <string>
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#include <vector>
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#include <Poco/Types.h>
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#include <common/strong_typedef.h>
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namespace DB
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{
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/** Типы данных для представления значений из БД в оперативке.
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*/
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STRONG_TYPEDEF(char, Null);
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using UInt8 = Poco::UInt8;
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using UInt16 = Poco::UInt16;
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using UInt32 = Poco::UInt32;
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using UInt64 = Poco::UInt64;
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using Int8 = Poco::Int8;
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using Int16 = Poco::Int16;
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using Int32 = Poco::Int32;
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using Int64 = Poco::Int64;
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using Float32 = float;
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using Float64 = double;
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using String = std::string;
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using Strings = std::vector<String>;
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template <typename T> struct IsNumber { static const bool value = false; };
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template <> struct IsNumber<UInt8> { static const bool value = true; };
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template <> struct IsNumber<UInt16> { static const bool value = true; };
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template <> struct IsNumber<UInt32> { static const bool value = true; };
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template <> struct IsNumber<UInt64> { static const bool value = true; };
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template <> struct IsNumber<Int8> { static const bool value = true; };
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template <> struct IsNumber<Int16> { static const bool value = true; };
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template <> struct IsNumber<Int32> { static const bool value = true; };
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template <> struct IsNumber<Int64> { static const bool value = true; };
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template <> struct IsNumber<Float32> { static const bool value = true; };
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template <> struct IsNumber<Float64> { static const bool value = true; };
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template <typename T> struct TypeName;
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template <> struct TypeName<Null> { static std::string get() { return "Null"; } };
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template <> struct TypeName<UInt8> { static std::string get() { return "UInt8"; } };
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template <> struct TypeName<UInt16> { static std::string get() { return "UInt16"; } };
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template <> struct TypeName<UInt32> { static std::string get() { return "UInt32"; } };
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template <> struct TypeName<UInt64> { static std::string get() { return "UInt64"; } };
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template <> struct TypeName<Int8> { static std::string get() { return "Int8"; } };
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template <> struct TypeName<Int16> { static std::string get() { return "Int16"; } };
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template <> struct TypeName<Int32> { static std::string get() { return "Int32"; } };
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template <> struct TypeName<Int64> { static std::string get() { return "Int64"; } };
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template <> struct TypeName<Float32> { static std::string get() { return "Float32"; } };
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template <> struct TypeName<Float64> { static std::string get() { return "Float64"; } };
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template <> struct TypeName<String> { static std::string get() { return "String"; } };
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/// Этот тип не поддерживается СУБД, но используется в некоторых внутренних преобразованиях.
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template <> struct TypeName<long double>{ static std::string get() { return "long double"; } };
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}
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