Micronaut Data JDBC：为什么我的连接表没有被查询？

Question

我正在创建一个简单的锦标赛数据库和其中的比赛。我创建了 4 个表：玩家、比赛、锦标赛和锦标赛回合。每个锦标赛有多个回合，每个回合有多个比赛，每场比赛只有两名选手。每个锦标赛还应该跟踪所有注册的玩家。我为这些表中的每一个创建了一个实体，有两个期望：

1. 保存锦标赛实体也会创建/更新子玩家、回合等
2. 获取锦标赛（通过存储库）也会立即用所有子数据填充它

第一个期望有效，第二个期望无效。

这是我对表格的（简化的）定义：

@MappedEntity(value = "player")
data class PlayerEntity(
    @field:Id @GeneratedValue val id: Int? = null,
)

@MappedEntity(value = "match")
data class MatchEntity(
    @field:Id @GeneratedValue val id: Int? = null,

    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "player_a_id", nullable = false, columnDefinition = "int")
    val playerA: PlayerEntity,

    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "player_b_id", nullable = false, columnDefinition = "int")
    val playerB: PlayerEntity,

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "tournament_round_id", nullable = false, columnDefinition = "int")
    val tournamentRound: TournamentRoundEntity,
)

@MappedEntity(value = "tournament_round")
data class TournamentRoundEntity(
    @field:Id @GeneratedValue val id: Int? = null,

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "tournament_id")
    val tournament: TournamentEntity,

    @OneToMany(mappedBy = "tournamentRound", orphanRemoval = true, cascade = [CascadeType.ALL], fetch = FetchType.LAZY)
    val matches: List<MatchEntity>,
)

@MappedEntity(value = "tournament")
data class TournamentEntity(
    @field:Id
    @GeneratedValue
    val id: Int? = null,

    @JoinTable(name = "tournament_player",
        joinColumns = [JoinColumn(name = "tournament_id", referencedColumnName = "id")],
        inverseJoinColumns = [JoinColumn(name = "player_id", referencedColumnName = "id")]
    )
    @ManyToMany(cascade = [CascadeType.ALL])
    val players: List<PlayerEntity>,

    @OneToMany(mappedBy = "tournament", orphanRemoval = true, cascade = [CascadeType.ALL])
    val tournamentRounds: List<TournamentRoundEntity>,
)

我所有的存储库看起来都像这样：

@JdbcRepository(dialect = Dialect.MYSQL)
@Transactional(Transactional.TxType.MANDATORY)
interface TournamentRepository : CrudRepository<TournamentEntity, Int>, JpaSpecificationExecutor<TournamentEntity>

保存锦标赛也会在关联表中正确创建适当的记录。然而，获取锦标赛（通过

tournamentRepository.findAll()

或

tournamentRepository.findById(id)

）不会从关联的表中获取任何内容。使用查询日志记录，我可以看到它甚至没有以任何方式尝试这样做：

// This is what happens when I call tournamentRepository.findAll()
DEBUG io.micronaut.data.query - Executing Query: SELECT tournament_entity_.`id` FROM `tournament` tournament_entity_

我试过弄乱注释但没有结果。我很乐意感谢任何帮助！