hibernate 中的property-ref属性
hibernate <one-to-one>中的property-ref属性。
person映射文件:
<hibernate-mapping package="hibernatetest">
<class name="Person" table="person">
<id name="id" column="id">
<generator class="native"></generator>
</id>
<property name="name" column="name"></property>
<one-to-one name="idcard1" property-ref="person" ></one-to-one>
</class>
</hibernate-mapping>
IdCard映射文件:
<hibernate-mapping package="hibernatetest">
<class name="IdCard1" table="idcard1">
<id name="id" column="id">
<generator class="native">
</generator>
</id>
<property name="uselife" column="uselife"></property>
<many-to-one name="person" column="person_id" unique="true"></many-to-one>
</class>
</hibernate-mapping>
我想知道在查找person的时候,hibernate是怎么到idcard1表中去查找相应person的????
property-ref=“”后面是引用吗??
property-ref这个属性不写好像也可以做查询,这个属性在这里是什么左右???