create table CAREER(
  id    integer(10)    not null auto_increment  primary key,
  name  varchar(50),
  begin_date  timestamp,
  end_date    timestamp,
  business  varchar(255),
  major    varchar(50),
  graduate_yn char(1),
  career_type char(20)
);

<hibernate-mapping package="kame.hibernate.chap05.model">
    <class name="Career" table="CAREER">
        <id name="id" column="ID" type="int">
            <generator class="identity" />
        </id>
       
        <discriminator column="CAREER_TYPE" type="string" />
       
        <property name="name" column="NAME" type="string" />
        <property name="beginDate" column="BEGIN_DATE" type="timestamp" />
        <property name="endDate" column="END_DATE" type="timestamp" />         
         
        <subclass name="CompanyCareer" discriminator-value="CC">
            <property name="business" column="BUSINESS" type="string" />
        </subclass>
       
        <subclass name="SchoolCareer" discriminator-value="SC">
            <property name="major" column="MAJOR" type="string" />
            <property name="graduate" column="GRADUATE_YN" type="yes_no" />
        </subclass>
         
    </class>
</hibernate-mapping>

public class CareerOneTest {
   
    private Session session = HibernateUtil.getCurrentSession();
   
    @Before
    public void before() {
        HibernateUtil.beginTransaction();
    }
   
    @After
    public void after() {
        HibernateUtil.closeSession();
    }
   
    @Ignore
    public void insertCompanyCareer() {
        try {
            CompanyCareer companyCareer = new CompanyCareer();
            companyCareer.setName("다음 커뮤니케이션");
            companyCareer.setBusiness("기술");
            companyCareer.setBeginDate(new Date());
            companyCareer.setEndDate(new Date());
           
            session.save(companyCareer);
            HibernateUtil.commitTransaction();
        } catch(Throwable ex) {
            HibernateUtil.rollbackTransaction();
            ex.printStackTrace();
        }
    }

    @Ignore
    public void insertSchoolCareer() {
        try {
            SchoolCareer schoolCareer = new SchoolCareer();
            schoolCareer.setName("순천대학교");
            schoolCareer.setGraduate(false);
            schoolCareer.setMajor("멀티미디어공학");
           
            session.save(schoolCareer);
           
            HibernateUtil.commitTransaction();
        } catch(Throwable ex) {
            HibernateUtil.rollbackTransaction();
            ex.printStackTrace();
        }
    }
   
    @Test
    public void getCompanyCareer() {
        try {
            Career companyCareer = (Career)session.get(Career.class, new Integer(1));
           
            System.out.println(companyCareer.getName());
           
        } catch(Throwable ex) {
            HibernateUtil.rollbackTransaction();
            ex.printStackTrace();
        }
    }
   
    @Test
    public void getSchoolCareer() {
        try {
            SchoolCareer schoolCareer = (SchoolCareer)session.get(SchoolCareer.class, new Integer(2));
            System.out.println(schoolCareer.getMajor() + "  " + schoolCareer.getName());
        } catch (Throwable e) {
            HibernateUtil.rollbackTransaction();
            e.printStackTrace();
        }
    }
}