Lightweight 0.20260625.0
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Public Types | List of all members
Lightweight::Through< JoinRecordT > Struct Template Reference
Data Mapper

Marks the join record of a relationship that is reached through an intermediate table. More...

#include <Record.hpp>

Public Types

using RecordType = JoinRecordT
 The join record type this marker wraps.
 

Detailed Description

template<typename JoinRecordT>
struct Lightweight::Through< JoinRecordT >

Marks the join record of a relationship that is reached through an intermediate table.

Writing the join record bare - HasManyThrough<Person, Friendship> - leaves the reader to remember which of the two record types is the join table. Wrapping it says so at the call site:

struct Person
{
Field<int, PrimaryKey::AutoAssign> id;
HasManyThrough<Person, Through<Friendship>> friends;
};
Lightweight::HasManyThrough
This API represents a many-to-many relationship between two records through a third record.
Definition HasManyThrough.hpp:67
Lightweight::Field
Represents a single column in a table.
Definition Field.hpp:84

The bare spelling still compiles, but is deprecated and will be removed in a future release.

Template Parameters
JoinRecordTThe join record type, holding the foreign keys of the relationship.
See also
HasManyThrough, HasOneThrough

Definition at line 157 of file Record.hpp.

Member Typedef Documentation

◆ RecordType

template<typename JoinRecordT >
using Lightweight::Through< JoinRecordT >::RecordType = JoinRecordT

The join record type this marker wraps.

Definition at line 160 of file Record.hpp.

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