Spring Data MongoDB 级联操作

DBRef 方式关联

public class Person implements Serializable {

private static final long serialVersionUID = 1L;

@Id
private String id;
private String name;
private String sex;
private String idCard;
private String note;

@DBRef // mongodb的注解，文档之间建立关联关系，可以认为是关系型数据库中的外键
@Field("book")
private List<Book> book;

//省略 set()... get()...

}

public class Book implements java.io.Serializable {

@Id
private String id;
private String bookName;
private String author;
private String press;
private String isbn;

//省略 set()... get()...
}

@Test
public void insert() {

Person person = new Person();
person.setName("zhangsan");
person.setSex("男");
person.setIdCard("110112100589911");
person.setNote("");

Book book = new Book();
book.setBookName("MongoDB实战");
book.setAuthor("李兴华");
book.setPress("清华大学出版社");
book.setIsbn("333");

List<Book> books = new ArrayList<Book>();
books.add(book);

person.setBook(books);  //把books设置到person中

personDao.saveBook(book); //需先保存book对象
personDao.savePerson(person);
}