Spring 存储库 findBy 连接表

Question

I have the following models

GameModel

// ...

@ManyToMany(cascade = CascadeType.DETACH)
@JoinTable(
    name = "game_genre",
    joinColumns = { @JoinColumn(name = "game_id") },
    inverseJoinColumns = { @JoinColumn(name = "genre_id") } )
private List<GenreModel> genres;

// ...

GenreModel

// ...

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;

@Column(name = "name", nullable = false, unique = true, length = 50)
private String name;

@ManyToMany(mappedBy = "genres")
private List<GameModel> games;

// ...

Also, I have repositories for them.
How can I get all the games that belong to (for example) genre with id 1 ? In the GameModel , I have no genres column, so I can not do it in the GameRepository using findByGenresContaining.

Answer 1

Thanks to @billalGHILAS It works like this:

// find games that belong to one genre
public List<GameModel> findByGenresId(int id);

// find games that belong to list of genres
public List<GameModel> findByGenresIdIn(List<Integer> id);