annotation 与xml 多表映射关系

一(Group)对多(User)：

Annotation 声明映射文件(Group)：

@Entity
@Table(name="t_group")
public class Group {
 private int id;
 private String name;
 private Set<User> users = new HashSet<User>();
 @Id
 @GeneratedValue
 public int getId() {
  return id;
 }
 public void setId(int id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 @OneToMany
 @JoinColumn(name="groupId")
 public Set<User> getUsers() {
  return users;
 }
 public void setUsers(Set<User> users) {
  this.users = users;
 }
}

 xml声明映射文件(Group)：

<hibernate-mapping>
 <class name="com.bjsxt.hibernate.Group" table="t_group">
  <id name="id">
   <generator class="native"></generator>
  </id>
  
  <property name="name"></property>
  <set name="users">
   <key column="groupId"></key>
   <one-to-many class="com.bjsxt.hibernate.User"/>
  </set>
    </class>
 
</hibernate-mapping>

 

Annotation 声明映射文件(User)：

@Entity
@Table(name="t_user")
public class User {
 private int id;
 private String name;
 
 
 @Id
 @GeneratedValue
 public int getId() {
  return id;
 }
 public void setId(int id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
}

 xml声明映射文件(User)：

<hibernate-mapping>
 <class name="com.bjsxt.hibernate.User" table="t_user">
  <id name="id">
   <generator class="native"></generator>
  </id>
  
  <property name="name"></property>
  
    </class>
 
</hibernate-mapping>