Sample.java

@Getter
@Setter
@Immutable
@Entity(name = "oa_genre")
public class OaGenreEntity {

    @Id
    @GeneratedValue
    private Long id;

    @Column(name = "path")
    private String path;

    @Column(name = "name")
    private String name;

    @OneToMany(fetch = FetchType.LAZY)
    @JoinColumn(name = "oa_genre_id")
    @OrderBy("display_order")
    private Set<OaGroup> openGroups;

    @OneToMany(fetch = FetchType.LAZY)
    @JoinColumn(name = "genre_id")
    private List<CampaignMissionFollowGenreEntity> missionFollowGenres;

}

@Getter
@Setter
@Immutable
@Entity(name = "oa_group")
public class OaGroup {

    @Id
    @GeneratedValue
    private Long id;

    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "oa_id")
    @Where(clause = "status = true")
    private OaEntity oaEntityList;

}