使用Hibernate和批注进行自我引用的多对多关系

小编典典

使用Hibernate和批注进行自我引用的多对多关系

java

我的大脑开始为此烦恼，这很简单：

@ManyToMany(mappedBy = "following", cascade = CascadeType.ALL)
private Set<User> followers = new HashSet<User>();

@ManyToMany(mappedBy = "followers", cascade = CascadeType.ALL)
private Set<User> following = new HashSet<User>();

阅读 211

2020-11-16

共1个答案

小编典典

就像是：

@ManyToMany(mappedBy = "following", cascade = CascadeType.ALL)
@JoinTable(name="UserRel", 
                joinColumns={@JoinColumn(name="ParentId")}, 
                inverseJoinColumns={@JoinColumn(name="UserId")})
private Set<User> followers = new HashSet<User>();

@ManyToMany(cascade = CascadeType.ALL)
@JoinTable(name="UserRel", 
                joinColumns={@JoinColumn(name="UserId")}, 
                inverseJoinColumns={@JoinColumn(name="ParentId")})
private Set<User> following = new HashSet<User>();

2020-11-16