7_一对一唯一外键关联映射(单向).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    (彼此要拥有对方的引用)


            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="native"/>
	</id>
	<property name="name"/>

	<many-to-one name="idcard" unique="true"/> 

       <!--unique="true" 指定'多'的一端的多重性唯一,实现了一对一唯一外键关联-->

     </class>
</hibernate-mapping>