Hibernate学习笔记----------------一对一关系

一对一关系 如 人对应身份证，身份证从属与人------------>

<!----------person.hbm.xml----------------->

<?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 
	package="com.itcast.domain">
	<class name="Person" table="t_person" >
		<id name="id">
			<generator class="native"/>
		</id>
		<property name="name" not-null="true" />
		<one-to-one name="idCard"/>
	</class>
</hibernate-mapping>

<!----------IdCard.hbm.xml----------------->

<?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 
	package="com.itcast.domain">
	<class name="IdCard" table="t_idCard" >
		<id name="id">
			<generator class="foreign">
				<param name="property">person</param>
			</generator>	
		</id>
		<property name="lifeDate" not-null="true" />
		<one-to-one name="person"/>
	</class>
</hibernate-mapping>