[JPA 2.0] MayToMany 설정하기

USER - ROLE의 관계 설정을 가정

User 클래스

@Id @Column(name = "USER_ID") private String userId; @ManyToMany(fetch = FetchType.EAGER) @JoinTable(name = "AUTHORITIES", joinColumns = { @JoinColumn(name = "USER_ID", referencedColumnName = "USER_ID") }, inverseJoinColumns = { @JoinColumn(name = "ROLE_ID", referencedColumnName = "ROLE_ID") }) private Set<Role> roles;

Role 클래스

@Id @Column(name = "ROLE_ID") private String roleId;  @ManyToMany(mappedBy = "roles", fetch = FetchType.EAGER) private Set<User> users;

Authority 클래스

@Id @Column(name = "USER_ID") private String userId; @Id @Column(name = "ROLE_ID") private String roleId;

참고 사이트

http://en.wikibooks.org/wiki/Java_Persistence/ManyToMan

http://www.objectdb.com/api/java/jpa/ManyToMany