6_一对一双向主键关联映射.txt

来自「hibernate 映射文件笔记 希望对大家有所帮助」· 文本 代码 · 共 48 行

                      Person<--->IdCard   (彼此拥有对方的引用)


            IdCard 

	private int id;
	private String cardNo;
	private Person person;

##############################

<hibernate-mapping >
     <class name="com.tcit.hibernate.IdCard">
          <id name="id">
              <generator class="native"/>
          </id>
          <property name="cardNo"/>
          <one-to-one name="Person"/>
          
     </class>
</hibernate-mapping>


===============================================


            Person 
	
	private int id;
	private String name;
	private IdCard idcard;

##############################

<hibernate-mapping >
     <class name="com.tcit.hibernate.Person">

          <id name="id">
              <generator class="foreign">                     <!-- 使用外部相关联的对象的标示 -->
                 <param name="property">idcard</param>        <!-- 关联对象 -->
              </generator>
          </id>

          <property name="name"/>
          <one-to-one name="idcard" constrained="true"/>      <!-- 约束 等于 true -->
     </class>
</hibernate-mapping>