1

请我如何在 mongoDB 中添加关系，因为我刚开始使用它。例如Comment id 是一个外键：

 @Document
    class Comment {

        @Id
        private String id;
        private String text;
        private String author;

        // constructors, getters and setters are ommited
    }

    @Document
    class Article {
        @Id
        private String id;
        @DBRef(lazy = true)
        @CascadeSave
        private List<Comment> comments;
        private String title;
        private String text;

        // constructors, getters and setters are ommited
    }
4

1 回答 1

3

JPA 注解@OneToMany 和@ManyToMany 的等价物是@DBRef

于 2020-03-25T23:33:54.003 回答