hibernate3学习笔记(十八)｜关系映射:一对多[Java编程]

接上例:http://blog.csdn.net/kunshan_shenbin/archive/2008/09/03/2873943.aspx

User对Room是多对一的关系,那么反过来Room对User就是一对多的关系了.

User.java:

1.package com.hb3.pack_17.model;
2.
3.public class User {
4.
5.    private Integer id;
6.    private String name;
7.
8.    public User() {
9.    }
10.
11.    public Integer getId() {
12.        return id;
13.    }
14.    public void setId(Integer id) {
15.        this.id = id;
16.    }
17.    public String getName() {
18.        return name;
19.    }
20.    public void setName(String name) {
21.        this.name = name;
22.    }
23.}

Room.java:

1.package com.hb3.pack_17.model;
2.
3.import java.util.Set;
4.
5.public class Room {
6.
7.    private Integer id;
8.    private String address;
9.    private Set<User> users;
10.
11.    public Room() {
12.    }
13.
14.    public Integer getId() { 
15.        return id;
16.    } 
17.    public void setId(Integer id) { 
18.        this.id = id;
19.    }
20.    public String getAddress() { 
21.        return address;
22.    }
23.    public void setAddress(String address) { 
24.        this.address = address;
25.    }
26.    public Set<User> getUsers() {
27.        return users;
28.    }
29.    public void setUsers(Set<User> users) {
30.        this.users = users;
31.    }
32.    public void addUser(User user) {
33.        users.add(user);
34.    }
35.    public void removeUser(User user) {
36.        users.remove(user);
37.    }
38.}

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