Hibernate多对一单向关联映射

     Hibernate多对一单向关联映射 

1、AddressTwo.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping 
          PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" 
          "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
  <class name="com.persistent.AddressTwo" table="address">  
    <id name="id" column="addressId" unsaved-value="0">
        <generator class="increment">
        </generator>
    </id>    
    <property name="addressName" column="addressName"></property>    
    <many-to-one name="peopleTwo" 
                 column="peopleId" 
                 class="com.persistent.PeopleTwo"
                 cascade="all"
                 >
    </many-to-one>    
  </class>  
</hibernate-mapping>

2、PeopleTwo.hbm.xml

<hibernate-mapping  default-lazy="false">  
   <class name="com.persistent.PeopleTwo" table="people">     
     <id name="id" column="peopleId" unsaved-value="0">    
        <generator class="increment">        
        </generator>    
     </id>     
     <property name="name" column="name"></property>          
   </class>
</hibernate-mapping>

3、PeopleTwo.java和AddressTwo.java

public class PeopleTwo ...{    
    private long id;
    private String name;
    …
}
public class AddressTwo ...{    
    private long id;
    private PeopleTwo peopleTwo;
    private String addressName;
…
}

4、测试程序

Session session = HibernateSessionFactory.getSession();
session.beginTransaction();
List result = session.createQuery("from AddressTwo").list();
session.getTransaction().commit();
for(int i = 0; i<result.size(); i++)...{
       AddressTwo addressTwo = (AddressTwo)result.get(i);
       System.out.println(addressTwo.getId()+"    "

                                            +addressTwo.getAddressName()+"    "

                                            +addressTwo.getPeopleTwo().getId()+"     "

                                            +addressTwo.getPeopleTwo().getName()
                                        );
}