使用Hibernate和批注进行自我引用的多对多关系 [英] Many to many with Hibernate and annotations for self referencing
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问题描述
我的大脑开始为此烦恼,这很简单吗?
My brain is starting to hurt thinking about this, is it as simple as:
@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>();
推荐答案
类似的东西:
@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>();
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