Lightweight::CompositeForeignKey< Connections >::Loader Struct Reference

Carries the deferred load, installed by the DataMapper. More...

#include <CompositeForeignKey.hpp>

Public Member Functions
std::weak_ordering	operator<=> (Loader const &) const noexcept
	Loaders carry no comparable state of their own, so any two are considered equivalent.
bool	operator== (Loader const &) const noexcept

Public Attributes
std::function< std::shared_ptr< ReferencedRecord >()>	loadReference {}
	Loads and returns the referenced record, or nullptr if none exists.

Detailed Description

template<ConnectionType... Connections>
struct Lightweight::CompositeForeignKey< Connections >::Loader

Carries the deferred load, installed by the DataMapper.

Definition at line 386 of file CompositeForeignKey.hpp.

Member Function Documentation

operator<=>()

template<ConnectionType... Connections>

std::weak_ordering Lightweight::CompositeForeignKey< Connections >::Loader::operator<=> ( Loader const &  ) const

inlinenoexcept

Loaders carry no comparable state of their own, so any two are considered equivalent.

Definition at line 392 of file CompositeForeignKey.hpp.

operator==()

template<ConnectionType... Connections>

bool Lightweight::CompositeForeignKey< Connections >::Loader::operator== ( Loader const &  ) const

inlinenoexcept

Loaders carry no comparable state of their own, so any two compare equal.

A defaulted == on the enclosing class does not derive equality from a member's <=> - each member needs its own viable ==, or the default is silently deleted. See HasMany::Loader for the same shape (there, without this operator; equal by convention since it holds none of the relation's state).

Definition at line 403 of file CompositeForeignKey.hpp.

Member Data Documentation

loadReference

template<ConnectionType... Connections>

std::function<std::shared_ptr<ReferencedRecord>()> Lightweight::CompositeForeignKey< Connections >::Loader::loadReference {}

Loads and returns the referenced record, or nullptr if none exists.

Definition at line 389 of file CompositeForeignKey.hpp.

Referenced by Lightweight::CompositeForeignKey< Connections >::operator==().

---

The documentation for this struct was generated from the following file:

• Lightweight/DataMapper/CompositeForeignKey.hpp