sqt::NullableValueTraits< T > Class Template Reference

#include <sqt/orm/value/trivial/basic/nullable_value_traits.h>

Description

template<NullableValueType T>
class sqt::NullableValueTraits< T >

Defines traits for nullable value types.

Template Parameters

T	A type that satisfies the sqt::NullableValueType concept.

This traits type is a wrapper around sqt::PrimitiveValueTraits<>, adding support for nullability.

This class template satisfies the sqt::BasicValueTraitsType concept.

See also

sqt::BasicValueTraitsType

sqt::NullableValueType

sqt::PrimitiveValueTraits<>

Public Types
using	ValueType = T
using	InnerValueTriats = PrimitiveValueTraits<internal::GetOptionalValueTypeT<T>>

Static Public Member Functions
static void	BindValue (Statement &statement, int parameter_index, const T &value)
static T	RetrieveValue (const Statement &statement, int column_index)

Static Public Attributes
static constexpr DataType	DataType = InnerValueTriats::DataType
static constexpr bool	IsNullable = true