hibernate继承映射之每个分层结构一张表

数据模型：

 

对象模型

 Person 
    private int id;
    private String name;
    private int age;
    private String sex;
    private String type;

Student extends Person 
     private String school;

Worker extends Person 
    private String factory;

 

xml文件配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.skuedu.bean">
   <class name="Person" table="person">
     <id name="id" >
           <generator class="native"></generator>
     </id>
     <discriminator column="type" type="string" not-null="true"></discriminator>
     <property name="name"  length="30"></property>
     <property name="age"   ></property>
     <property name="sex"  length="10"></property>
     <subclass name="Student" discriminator-value="STUDENT">
         <property name="school"></property>
     </subclass>
     <subclass name="Worker" discriminator-value="WORKER">
         <property name="factory"></property>
     </subclass>
  </class>
</hibernate-mapping>