hibernate一对一之唯一外键关联（双向关联）

其内容与http://huihai.iteye.com/blog/1243530一样。只是映射文件Group.hbm.xml文件改成如下所示

 

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
      "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
	<class name="cn.ehoo.bean.Group" table="group1">
		<id name="id" type="long" column="group_id">
			<generator class="native" />
		</id>
		<property name="groupName"/>
		<one-to-one name="user" class="cn.ehoo.bean.TUser" property-ref="group"></one-to-one>
	</class>
</hibernate-mapping>