一对一单向主键关联xml配置方法

1.一对一单向主键关联：（1）基于主键关联的持久化类不能拥有自己的主键生成策略，必须依附于关联类，由关键类来生成主键。（2）一对一主键映射中，默认了cascade属性。Eg:Husband类xml配置

<?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.buaa.hibernate.bean">
<class name="Husband">
<id name="id" column="id">
<generator class="foreign">
<param name="property">wife</param>
</generator>
</id>
<property name="name"></property>
<one-to-one name="wife" constrained="true"/>
</class>
</hibernate-mapping>

Eg:Wife类xml的配置

<?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.buaa.hibernate.bean">
<class name="Wife">
<id name="id" column="id">
<generator class="native"></generator>
</id>
<property name="name"></property>
</class>
</hibernate-mapping>

2.一对一单向外键关联：Eg:Husband类xml配置

<?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.buaa.hibernate.bean">
<class name="Husband">
<id name="id" column="id">
<generator class="native"/>
</id>
<property name="name"></property>
<many-to-one name="wife" column="wifeId" unique="true"/>
</class>
</hibernate-mapping>

Eg:Wife类xml配置

<?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.buaa.hibernate.bean">
<class name="Wife">
<id name="id" column="id">
<generator class="native"></generator>
</id>
<property name="name"></property>
</class>
</hibernate-mapping>