hibernate one-to-one

hibernate.cfg

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

<session-factory>
	<property name="hbm2ddl.auto">update</property>
	<property name="dialect">org.hibernate.dialect.DB2Dialect</property>
	<property name="connection.url">
		jdbc:db2://192.168.25.230:50000/JSAMPLE
	</property>
	<property name="connection.username">zyl</property>
	<property name="connection.password">123</property>
	<property name="connection.driver_class">
		com.ibm.db2.jcc.DB2Driver
	</property>
	<property name="myeclipse.connection.profile">zyl</property>
	<mapping resource="com/zyl/po/User.hbm.xml" />
	<mapping resource="com/zyl/po/Card.hbm.xml" />

</session-factory>

</hibernate-configuration>

----------------------------------------------------------------------
package com.zyl.po;

/**
 * User generated by MyEclipse Persistence Tools
 */
public class User implements java.io.Serializable {
	public User(Integer userid, String username) {
		super();
		this.userid = userid;
		this.username = username;
	}

	public User(Integer userid, String username, Card card) {
		super();
		this.userid = userid;
		this.username = username;
		this.card = card;
	}

	// Fields
	private Integer userid;
	private String username;
	private Card card;

	// Constructors
	public Card getCard() {
		return card;
	}

	public void setCard(Card card) {
		this.card = card;
	}

	/** default constructor */
	public User() {
	}

	/** full constructor */
	public User(String username) {
		this.username = username;
	}

	// Property accessors
	public Integer getUserid() {
		return this.userid;
	}

	public void setUserid(Integer userid) {
		this.userid = userid;
	}

	public String getUsername() {
		return this.username;
	}

	public void setUsername(String username) {
		this.username = username;
	}
}
----------------------------------------------------------------------
User.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.zyl.po.User" table="t_user">
		<id name="userid" type="integer">
			<column name="userid" />
			<generator class="increment" />
		</id>
		<property name="username" type="string">
			<column name="username" length="32" not-null="true" />
		</property>
		<one-to-one name="card" class="com.zyl.po.Card" cascade="all"></one-to-one>
	</class>
</hibernate-mapping>
--------------------------------------------------------------------
package com.zyl.po;

/**
 * Card generated by MyEclipse Persistence Tools
 */
public class Card implements java.io.Serializable {
	// Fields
	private Integer cardid;
	private Integer cardnum;
	private User user;

	// Constructors
	/** default constructor */
	public Card() {
	}

	/** full constructor */
	public Card(Integer cardnum) {
		this.cardnum = cardnum;
	}

	// Property accessors
	public Integer getCardid() {
		return this.cardid;
	}

	public void setCardid(Integer cardid) {
		this.cardid = cardid;
	}

	public Integer getCardnum() {
		return this.cardnum;
	}

	public void setCardnum(Integer cardnum) {
		this.cardnum = cardnum;
	}

	public User getUser() {
		return user;
	}

	public void setUser(User user) {
		this.user = user;
	}
}
----------------------------------------------------------------------
Card.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.zyl.po.Card" table="t_card">
		<id name="cardid" type="integer">
			<column name="cardid" />
			<generator class="foreign">
				<param name="property">user</param>
			</generator>
		</id>
		<property name="cardnum" type="integer">
			<column name="cardnum" not-null="true" />
		</property>
		<one-to-one name="user" class="com.zyl.po.User"></one-to-one>
	</class>
</hibernate-mapping>
--------------------------------------------------------------------
UserDAO.java
package com.zyl.dao;

import java.util.List;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.zyl.factory.HibernateSessionFactory;
import com.zyl.po.User;

public class UserDAO {
	public void save(User user) {
		Session session = HibernateSessionFactory.getSession();
		Transaction trans = session.beginTransaction();
		session.save(user);
		trans.commit();
		session.close();
	}
}
-------------------------------------------------------------------
CardDAO.java

package com.zyl.dao;

import org.hibernate.Session;
import org.hibernate.Transaction;

import com.zyl.factory.HibernateSessionFactory;
import com.zyl.po.Card;

public class CardDAO {
	public void save(Card card ) {
		Session session = HibernateSessionFactory.getSession();
		Transaction trans = session.beginTransaction();
		session.save(card);
		trans.commit();
		session.close();
	}

}
---------------------------------------------------------------------
package com.zyl.dao.test;

import org.junit.Assert;
import org.junit.Test;

import com.zyl.dao.UserDAO;
import com.zyl.po.Card;
import com.zyl.po.User;

public class UserDAOTestCase {

	@Test
	public void testSaveUsers(){
		
		  User user=new User();
		  user.setUsername("zyl");
		  Card card=new Card();
		  user.setCard(card);
		  card.setUser(user);
		  card.setCardnum(1);
		
		UserDAO userDAO =new UserDAO();
		userDAO.save(user);
		
		
		Assert.assertNotNull("插入失败",user.getUserid());
		System.out.println("user.getUsername()");
	}
	
}
----------------------------------
表
T-USER
主键       USERID	INTEGER	4	否
	USERNAME	VARCHAR	32	否
T-CARD
主键       CARDID	INTEGER	4	否
	CARDNUM	INTEGER	4	否