BookManager.java

package net.codejava.hibernate;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;

/**
 * BookManager.java
 * A Hibernate hello world program
 * @author www.codejava.net
 *
 */
public class BookManager {
    protected SessionFactory sessionFactory;

    protected void setup() {
        /*final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
                .configure() // configures settings from hibernate.cfg.xml
                .build();*/
        final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
                .configure("hibernate.cfg.xml") // configures settings from hibernate.cfg.xml
                .build();
        try {
            sessionFactory = new MetadataSources(registry).buildMetadata().buildSessionFactory();
        } catch (Exception ex) {
            StandardServiceRegistryBuilder.destroy(registry);
            throw new RuntimeException(ex);
        }
    }

    protected void exit() {
        sessionFactory.close();
    }

    protected void create() {
        Book book = new Book();
        /*book.setTitle("Effective Java");
        book.setAuthor("Joshua Bloch");
        book.setPrice(32.59f);*/

        book.setTitle("Effective Python");
        book.setAuthor("Mahesh Iyer");
        book.setPrice(32.69f);

        Session session = sessionFactory.openSession();
        session.beginTransaction();

        session.save(book);

        session.getTransaction().commit();
        session.close();
    }

    protected void read() {
        Session session = sessionFactory.openSession();

        long bookId = 20;
        Book book = session.get(Book.class, bookId);

        System.out.println("Title: " + book.getTitle());
        System.out.println("Author: " + book.getAuthor());
        System.out.println("Price: " + book.getPrice());

        session.close();
    }

    protected void update() {
        Book book = new Book();
        book.setId(20);
        book.setTitle("Ultimate Java Programming");
        book.setAuthor("Nam Ha Minh");
        book.setPrice(19.99f);

        Session session = sessionFactory.openSession();
        session.beginTransaction();

        session.update(book);

        session.getTransaction().commit();
        session.close();
    }

    protected void delete() {
        Book book = new Book();
        book.setId(20);

        Session session = sessionFactory.openSession();
        session.beginTransaction();

        session.delete(book);

        session.getTransaction().commit();
        session.close();
    }

    public static void main(String[] args) {
        BookManager manager = new BookManager();
        manager.setup();
        manager.create();
        //manager.delete();

        manager.exit();
    }

}