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我想从多个OneToMany关系中删除一个条目,但无论我做什么都不会更新集合。春季JPA OneToMany集合不删除条目
我有三个类,Rating,Content和User。我可以成功创建适当填充内容和用户集合的评分。但是,我无法删除收藏中的评分。评分成功删除,但内容和用户集合不会更新。以下是三个类别:
public class Rating {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
@ManyToOne(fetch = FetchType.EAGER)
@JsonIdentityInfo(generator = JSOGGenerator.class)
private User user;
@ManyToOne(fetch = FetchType.EAGER)
@JsonIdentityInfo(generator = JSOGGenerator.class)
private Content content;
public void setUser(User user) {
this.user = user;
if (!user.getRatings().contains(this)) {
user.getRatings().add(this);
}
}
public void setContent(Content content) {
this.content = content;
if (!content.getRatings().contains(this)) {
content.getRatings().add(this);
}
}
}
public class User {
@OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
@JsonIdentityInfo(generator = JSOGGenerator.class)
private Set<Rating> ratings;
public void addRating(Rating rating) {
this.ratings.add(rating);
if (rating.getUser() != this) {
rating.setUser(this);
}
}
public void removeRating(Rating rating) {
ratings.remove(rating);
}
}
public class Content {
@OneToMany(mappedBy = "content", cascade = CascadeType.ALL, orphanRemoval = true)
@JsonIdentityInfo(generator = JSOGGenerator.class)
private Set<Rating> ratings;
public void addRating(Rating rating) {
this.ratings.add(rating);
if (rating.getContent() != this) {
rating.setContent(this);
}
}
public void removeRating(Rating rating) {
ratings.remove(rating);
}
}
public class RatingController {
@RequestMapping(value = "/api/ratings/{id}", method = RequestMethod.DELETE)
public void deleteRating(@PathVariable("id") int ratingId) {
Rating rating = ratingService.getRatingById(ratingId);
if (rating == null) {
return;
}
// THIS DOES NOT DO ANYTHING
rating.getUser().removeRating(rating);
// THIS DOES NOT DO ANYTHING
rating.getContent().removeRating(rating);
ratingService.deleteRating(rating);
}
}
即使手动从集合中删除它仍然不会更新。有任何想法吗?
我实现了这两种的hashCode()和equlas()的所有三个类和集合仍然没有更新。 (我用IntelliJ发生器保证唯一的非空字段) – user3023421
其实内容的评级正在更新,但由于某种原因,用户不是。奇怪,我会仔细看看为什么 – user3023421
谢谢Xtreme Biker,这很有效。 – user3023421