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hibernate 集成映射

时间:2016-01-12 06:31:50      阅读:178      评论:0      收藏:0      [点我收藏+]

3中

1.subclass

    <class name="Worker" table="worker" discriminator-value="worker">

        <id name="id" type="java.lang.Integer">
            <column name="ID"/>
            <generator class="native"/>
        </id>

        <discriminator column="type" type="string"></discriminator>

        <property name="name"></property>

        <subclass name="Driver" discriminator-value="driver">
            <property name="car"></property>
        </subclass>
    </class>

2.joined-subclass

    <class name="Animal" table="animal">

        <id name="id" type="java.lang.Integer">
            <column name="ID"/>
            <generator class="native"/>
        </id>

        <property name="name"></property>

        <joined-subclass name="Cat" table="cat">
            <key column="cat_id"></key>
            <property name="food"></property>
        </joined-subclass>
    </class>

3.union-subclass

    <class name="Book" table="book">

        <id name="id" type="java.lang.Integer">
            <column name="ID"/>
            <generator class="assigned"/>
        </id>

        <property name="name"></property>

        <union-subclass name="English" table="english">
            <property name="language"></property>
        </union-subclass>

    </class>

 

hibernate 集成映射

原文:http://www.cnblogs.com/fengyexjtu/p/5123083.html

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