create ? table ?personTPC?(id? varchar ( 32 ),name? varchar ( 32 ),personType? varchar ( 32 ),cardnum? varchar ( 32 ),salary? double );

<? xml?version='1.0'?encoding='UTF-8' ?>
<! DOCTYPE?hibernate-configuration?PUBLIC
??????????"-//Hibernate/Hibernate?Configuration?DTD?3.0//EN"
??????????"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd" >

<!-- ?Generated?by?MyEclipse?Hibernate?Tools.??????????????????? -->
< hibernate-configuration >

< session-factory >
???? < property? name ="connection.username" > root </ property >
???? < property? name ="connection.url" >
????????jdbc:mysql://localhost:3306/schoolproject?characterEncoding=gb2312 &amp; useUnicode=true
???? </ property >
???? < property? name ="dialect" >
????????org.hibernate.dialect.MySQLDialect
???? </ property >
???? < property? name ="myeclipse.connection.profile" > mysql </ property >
???? < property? name ="connection.password" > 1234 </ property >
???? < property? name ="connection.driver_class" >
????????com.mysql.jdbc.Driver
???? </ property >
???? < property? name ="hibernate.dialect" >
????????org.hibernate.dialect.MySQLDialect
???? </ property >
???? < property? name ="hibernate.show_sql" > true </ property >
???? < property? name ="current_session_context_class" > thread </ property >
???? < property? name ="jdbc.batch_size" > 15 </ property >
???? < mapping? resource ="Mapping/TPCSubclass/Person.hbm.xml" ? />




</ session-factory >

</ hibernate-configuration >

package ?Mapping.TPC;

public ? class ?Person?... ... {
?? private ?String?id;
?? private ?String?name;
public ?String?getId()?... ... {
???? return ?id;
}
public ? void ?setId(String?id)?... ... {
???? this .id? = ?id;
}
public ?String?getName()?... ... {
???? return ?name;
}
public ? void ?setName(String?name)?... ... {
???? this .name? = ?name;
}
}


package ?Mapping.TPC;

public ? class ?Student? extends ?Person?... ... {
?? private ?String?cardnum;

public ?String?getCardnum()?... ... {
???? return ?cardnum;
}

public ? void ?setCardnum(String?cardnum)?... ... {
???? this .cardnum? = ?cardnum;
}
}


package ?Mapping.TPC;

public ? class ?Teacher? extends ?Person?... ... {
??? private ?Double?salary;

public ?Double?getSalary()?... ... {
???? return ?salary;
}

public ? void ?setSalary(Double?salary)?... ... {
???? this .salary? = ?salary;
}
}

<? 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" >
<!-- ?
????Mapping?file?autogenerated?by?MyEclipse?-?Hibernate?Tools
-->
< hibernate-mapping >
< class? name ="Mapping.TPCSubclass.Person" ?table ="personTPC" ? >
???? < id? name ="id" ?unsaved-value ="null" >
?????? < generator? class ="uuid.hex" ></ generator >
???? </ id >
???? < discriminator? column ="personType" ?type ="string" ></ discriminator >
???? < property? name ="name" ?type ="string" ?column ="name" ></ property >
???? < subclass? name ="Mapping.TPCSubclass.Student" ?discriminator-value ="student" >
?????? < property? name ="cardnum" ?type ="string" ></ property >
???? </ subclass >
????? < subclass? name ="Mapping.TPCSubclass.Teacher" ?discriminator-value ="teacher" >
?????? < property? name ="salary" ?type ="double" ></ property >
???? </ subclass >
</ class >

</ hibernate-mapping >

package ?Mapping.TPCSubclass;


import ?java.io.File;
import ?java.util.Iterator;

import ?org.hibernate.Query;
import ?org.hibernate.Session;
import ?org.hibernate.SessionFactory;
import ?org.hibernate.Transaction;
import ?org.hibernate.cfg.Configuration;

public ? class ?Test? ... {


???? public ? static ? void ?main(String[]?args)? ... {

????????String?filePath = System.getProperty( " user.dir " ) + File.separator + " src/Mapping/TPCSubclass " + File.separator + " hibernate.cfg.xml " ;
????????File?file = new ?File(filePath);
????????System.out.println(filePath);
????????SessionFactory?sessionFactory = new ?Configuration().configure(file).buildSessionFactory();
????????Session?session = sessionFactory.openSession();
????????Transaction?t = session.beginTransaction();
????????Student?stu = new ?Student();
????????stu.setCardnum( " 11111 " );
????????stu.setName( " tom1stu " );
????????
????????Teacher?teacher = new ?Teacher();
????????teacher.setSalary( new ?Double( 12345 ));
????????teacher.setName( " tom1teacher " );
????????session.save(stu);
????????session.save(teacher);
???????? // 單獨(dú)查找student
????????Query?query = session.createQuery( " from?Mapping.TPCSubclass.Student " );
????????Iterator?iter = query.list().iterator();
???????? while (iter.hasNext()) ... {
????????????Person?person = (Person)iter.next();
????????????System.out.println(person.getName());
????????}
????????t.commit();
????????
????}

}