sqt::ConstantOperand< TRAITS > Class Template Reference

#include <sqt/orm/expression/operand/constant_operand.h>

Description

template<ValueTraitsType TRAITS>
class sqt::ConstantOperand< TRAITS >

Represents a constant value operand.

Template Parameters

TRAITS

The value traits type this operand represents, which must satisfy the sqt::ValueTraitsType concept.

Literals or variables used to create expressions become constant operands. The values are stored in the constant operand, and won't be changed.

Constant operands in a querier are inline parameters, their values will be bound to the SQL statement by the BindInlineParameters() method of the querier before it is executed.

This class template satisfies the sqt::ValueOperandType concept.

See also

sqt::ValueOperandType

sqt::ValueTraitsType

Public Types
using	ValueTraits = TRAITS
using	ValueType = typename TRAITS::ValueType

Static Public Member Functions
static std::string	BuildSQL ()
static constexpr std::tuple	BuildPlaceholderBinders (int parameter_index) noexcept

Public Member Functions
constexpr	ConstantOperand (ValueType value)
void	BindInlineParameters (Statement &statement, int parameter_index) const

Static Public Attributes
static constexpr std::size_t	ParameterCount = internal::ParameterCountForV<TRAITS>