Introducción a Hibernate
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Ejemplo de http://www.cursohibernate.es/lib/exe/fetch.php?media=unidades:unidad_02.zip
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://localhost/hibernate1</property> <property name="connection.username">hibernate1</property> <property name="connection.password">hibernate1</property> <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property> <property name="hibernate.show_sql">true</property> <mapping resource="ejemplo01/Profesor.hbm.xml"/> </session-factory> </hibernate-configuration>
Profesor.java
package ejemplo01; import java.io.Serializable; public class Profesor implements Serializable { private int id; private String nombre; private String ape1; private String ape2; public Profesor(){ } public Profesor(int id, String nombre, String ape1, String ape2) { this.id = id; this.nombre = nombre; this.ape1 = ape1; this.ape2 = ape2; } // getters y setters ... }
Profesor.hbm.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="ejemplo01.Profesor" table="Profesor" > <id column="Id" name="id" type="integer"/> <property name="nombre" /> <property name="ape1" /> <property name="ape2" /> </class> </hibernate-mapping>
Main.java
package ejemplo01; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistry; import org.hibernate.service.ServiceRegistryBuilder; public class Main { public static void main(String[] args) { SessionFactory sessionFactory; Configuration configuration = new Configuration(); configuration.configure(); ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry(); sessionFactory = configuration.buildSessionFactory(serviceRegistry); Profesor profesor=new Profesor(101, "Juan", "Perez", "García"); Session session=sessionFactory.openSession(); session.beginTransaction(); session.save(profesor); session.getTransaction().commit(); Profesor profesor2=(Profesor)session.get(Profesor.class,101); System.out.println(profesor2.getId()); System.out.println(profesor2.getNombre()); System.out.println(profesor2.getApe1()); System.out.println(profesor2.getApe2()); profesor2.setNombre("Daniel"); session.beginTransaction(); session.update(profesor2); session.getTransaction().commit(); session.beginTransaction(); session.delete(profesor2); session.getTransaction().commit(); session.close(); sessionFactory.close(); } }