hibernate JPA 双向多对多 bi-directional many-to-many association

学生课程双向多对多:

 Subject.java

//关系集合

@ManyToMany(targetEntity=Student.class)

@JoinTable(name="STUDENT_SUBJECT",

joinColumns=@JoinColumn(name="SUBJECT_ID",referencedColumnName="ID"),

inverseJoinColumns=@JoinColumn(name="STUDENT_ID",referencedColumnName="ID"))

privateSet students;

 Student.java

//关系集合

@ManyToMany(targetEntity=Subject.class)

@JoinTable(name="STUDENT_SUBJECT",

joinColumns=@JoinColumn(name="STUDENT_ID",referencedColumnName="ID"),

inverseJoinColumns=@JoinColumn(name="SUBJECT_ID",referencedColumnName="ID"))

privateSet subjects;  

用户角色双向多对多:

IDMUser.java

@ManyToMany(targetEntity = IDMBizRole.class)

@JoinTable(name = "IDMUSERBIZROLE",

   joinColumns = @JoinColumn(name = "USERID", referencedColumnName = "USERID"),

   inverseJoinColumns = @JoinColumn(name = "BIZROLEID", referencedColumnName = "ROLEID"))

private Set<IDMBizRole> idmroles = new HashSet<IDMBizRole>();

IDMBizRole.java

@ManyToMany(targetEntity=IDMUser.class)

@JoinTable(name="IDMUSERBIZROLE",

       joinColumns=@JoinColumn(name="BIZROLEID",referencedColumnName="ROLEID"),

       inverseJoinColumns=@JoinColumn(name="USERID",referencedColumnName="USERID"))

private Set<IDMUser> users = new HashSet<IDMUser>();