testexample.java

印度高手写的hibernate 参考手册

/**
 * Test application for example 
 * @author Sebastian Hennebrueder
 * created Jan 16, 2006
 * copyright 2006 by http://www.laliluna.de
 */

package de.laliluna.example;

import java.util.Iterator;
import java.util.List;

import org.apache.log4j.Logger;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import de.laliluna.hibernate.InitSessionFactory;

public class TestExample {

	private static Logger log =Logger.getLogger(TestExample.class);
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Honey forestHoney = new Honey();
		forestHoney.setName("forest honey");
		forestHoney.setTaste("very sweet");
		Honey countryHoney = new Honey();
		countryHoney.setName("country honey");
		countryHoney.setTaste("tasty");
		createHoney(forestHoney);
		createHoney(countryHoney);
		// our instances have a primary key now:
		log.debug(forestHoney);
		log.debug(countryHoney);
		listHoney();
		deleteHoney(forestHoney);
		listHoney();

	}

	private static void listHoney() {
		Transaction tx = null;
		Session session = InitSessionFactory.getInstance().getCurrentSession();
		try {
			tx = session.beginTransaction();
			List honeys = session.createQuery("select h from Honey as h")
					.list();
			for (Iterator iter = honeys.iterator(); iter.hasNext();) {
				Honey element = (Honey) iter.next();
				log.debug(element);
			}
			tx.commit();
		} catch (HibernateException e) {
			e.printStackTrace();
			if (tx != null && tx.isActive())
				tx.rollback();

		}
	}

	private static void deleteHoney(Honey honey) {
		Transaction tx = null;
		Session session = InitSessionFactory.getInstance().getCurrentSession();
		try {
			tx = session.beginTransaction();
			session.delete(honey);
			tx.commit();
		} catch (HibernateException e) {
			e.printStackTrace();
			if (tx != null && tx.isActive())
				tx.rollback();
		}
	}

	private static void createHoney(Honey honey) {
		Transaction tx = null;
		Session session = InitSessionFactory.getInstance().getCurrentSession();
		try {
			tx = session.beginTransaction();
			session.save(honey);
			tx.commit();
		} catch (HibernateException e) {
			e.printStackTrace();
			if (tx != null && tx.isActive())
				tx.rollback();
		}
	}
}