Hibernate 如何使用JPA删除具有OneToMany关系的外键条目

我有一本书，作者和分类实体

书与作者有一种

@onetone

关系，书与类别也有一种

@OneToMany

关系

Book实体看起来像：

@Entity
public class Book {
    @Fetch(FetchMode.JOIN)
    @OneToOne(orphanRemoval = true, mappedBy = "book", optional = true)
    private Author author

    @Fetch(FetchMode.JOIN)
    @OneToMany(orphanRemoval = true, cascade = CascadeType.ALL, mappedBy = "book", targetEntity = Category.class, fetch = FetchType.EAGER)
    private List<Category> categories = new ArrayList<>();
} 

@Entity
public class Author {
    @OneToOne(optional = false)
    private Book book;
}

@Entity
public class Category {
    @ManyToOne(cascade = CascadeType.ALL, optional = true)
    @JoinColumn(name = "book_id", nullable = false)
    private Book book;
}

类别实体如下所示：

@Entity
public class Book {
    @Fetch(FetchMode.JOIN)
    @OneToOne(orphanRemoval = true, mappedBy = "book", optional = true)
    private Author author

    @Fetch(FetchMode.JOIN)
    @OneToMany(orphanRemoval = true, cascade = CascadeType.ALL, mappedBy = "book", targetEntity = Category.class, fetch = FetchType.EAGER)
    private List<Category> categories = new ArrayList<>();
} 

@Entity
public class Author {
    @OneToOne(optional = false)
    private Book book;
}

@Entity
public class Category {
    @ManyToOne(cascade = CascadeType.ALL, optional = true)
    @JoinColumn(name = "book_id", nullable = false)
    private Book book;
}

我对JPA删除有问题。在我的测试用例中，我有两个类别条目链接到一个图书条目。我希望在删除图书条目时，Category和Author的相应条目也会被删除

“我的服务”中的删除呼叫是：

bookRepository.delete(book);

---

然而，我发现只有作者条目被删除，所有其他条目仍然存在。你能发现我的设置有问题吗？在删除图书条目之前，我不想手动删除所有外键条目。

尝试删除图书实体中的OrphanRemove属性或使用OrphanRemove=false尝试删除图书实体中的OrphanRemove属性或使用OrphanRemove=false