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" ))
private Set 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" ))
private Set 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>();