MDP*_*MDP 5 java mapping orm hibernate jpa
我有一堂课叫News. 任何新闻都可以有很多Photo。这些是我的桌子
news news_photo photo
-------------- ---------------------- ------------
| id | title | | id_news | id_photo | | id | url |
-------------- ---------------------- ------------
| | | |
|----------------------| |--------------|
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这是我的班级News
@Entity
@Table(name = "news")
public class News extends ElementoPersistente implements Serializable{
...
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval = true)
@JoinTable(name = "news_photo",
joinColumns = { @JoinColumn(name = "id_news")},
inverseJoinColumns = { @JoinColumn(name = "id_photo") })
private List<photo> photos;
...
}
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当我从中删除一个对象List<photo> photos然后保存该对象时News,相关记录将从表中删除news_photo,但表内不会删除任何内容photo。如何删除news_photo和中的两条记录photo?
谢谢
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