Hibernate 4使用oneToMany集合删除实体

Question

我试图从DB中删除用户实体

//whatever
@OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "user", orphanRemoval = true)
    private Set<Filter> filters = new HashSet<Filter>();
//whatever

//whatever
@ManyToOne(fetch = FetchType.LAZY, cascade = {CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REFRESH, CascadeType.DETACH})
@JoinColumn(name = "user_id", nullable = false)
private User user;
//whatever

但得到： 错误SqlExceptionHelper：146 - 无法删除或更新父行：外键约束失败（web_app_db。filters，CONSTRAINT FK_8oeay5yddrcgd4i71m1yda1hb FOREIGN KEY（user_id）REFERENCES {{1 } {（users））

orphanRemoval = true不工作，我该怎么办？

Answer 1

试试这个：

@ManyToOne(fetch = FetchType.LAZY, cascade = {CascadeType.ALL})
@JoinColumn(name = "user_id", nullable = false)
private User user;