Programming hibernate annotations example

Hibernate annotations - hibernate without the mapping files
note: you must use jdk1.5, hibernate 3.2 core and annotations
create hibernate.cfg.xml

 <?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">  
 <hibernate-configuration>  
 <session-factory>  
 <property name="hibernate.connection.driver_class">org.apache.derby.jdbc.EmbeddedDriver</property>  
 <property name="hibernate.connection.url">jdbc:derby:/test;create=true</property>  
 <property name="hibernate.dialect">org.hibernate.dialect.DerbyDialect</property>  
 <property name="hibernate.hbm2ddl.auto">update</property>  
 <property name="connection.pool_size">1</property>  
 <mapping class="test.Employee"/>  
 </session-factory>  
 </hibernate-configuration>  

===========================================================
create Employee.java - this is your entity

 package test;  
 import java.io.Serializable;  
 import java.util.Date;  
 import javax.persistence.*;  
 @Entity  
 @Inheritance(strategy = InheritanceType.JOINED)  
 public class Employee implements Serializable {  
      Long id;  
      @Id  
      @GeneratedValue(strategy = GenerationType.AUTO)  
      public Long getId() {  
           return id;  
      }  
      public void setId(Long id) {  
           this.id = id;  
      }  
      public String title;  
      public Date date;  
      public Date getDate() {  
           return date;  
      }  
      public void setDate(Date date) {  
           this.date = date;  
      }  
      public String getTitle() {  
           return title;  
      }  
      public void setTitle(String title) {  
           this.title = title;  
      }  
 }  

===========================================================
create the add/list employee's program - EventManager.java

 package test;  
 import org.hibernate.Session;  
 import java.util.Date;  
 import java.util.List;  
 import util.HibernateUtil;  
 public class EventManager {  
      public static void main(String[] args) {  
           EventManager mgr = new EventManager();  
           // mgr.createAndStoreEvent("My Event", new Date());  
           List events = mgr.listEvents();  
           for (int i = 0; i < events.size(); i++) {  
                Employee theEvent = (Employee) events.get(i);  
                System.out.println("Event: " + theEvent.getTitle() + " Time: "  
                          + theEvent.getDate());  
           }  
           HibernateUtil.getSessionFactory().close();  
      }  
      private List listEvents() {  
           Session session = HibernateUtil.getSession();  
           session.beginTransaction();  
           List result = session.createQuery("from Employee").list();  
           session.getTransaction().commit();  
           return result;  
      }  
      private void createAndStoreEvent(String title, Date theDate) {  
           Session session = HibernateUtil.getSession();  
           session.beginTransaction();  
           Employee theEvent = new Employee();  
           theEvent.setTitle(title);  
           theEvent.setDate(theDate);  
           session.save(theEvent);  
           session.getTransaction().commit();  
      }  
 }  

===========================================================
use different configuration manager - modify HibernateUtil.java

 package util;  
 import org.hibernate.*;  
 import org.hibernate.cfg.*;  
 public class HibernateUtil {  
      private static final SessionFactory sessionFactory;  
      static {  
           try {  
                // Create the SessionFactory from hibernate.cfg.xml  
                sessionFactory = new AnnotationConfiguration().configure()  
                          .buildSessionFactory();  
           } catch (Throwable ex) {  
                // Make sure you log the exception, as it might be swallowed  
                System.err.println("Initial SessionFactory creation failed." + ex);  
                throw new ExceptionInInitializerError(ex);  
           }  
      }  
      public static SessionFactory getSessionFactory() {  
           return sessionFactory;  
      }  
      public static Session getSession() throws HibernateException {  
           return sessionFactory.openSession();  
      }  
 }  

===========================================================
import the necessary jar files
antlr-2.7.6.jar
asm-attrs.jar
asm.jar
cglib-2.1.3.jar
commons-collections-2.1.1.jar
commons-logging-1.0.4.jar
derby.jar
derbyclient.jar
derbynet.jar
derbyrun.jar
derbytools.jar
dom4j-1.6.1.jar
ejb3-persistence.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate3.jar
jta.jar
log4j-1.2.11.jar