Hibernate example source code file (MultipleHiLoPerTableGeneratorTest.java)

This example Hibernate source code file (MultipleHiLoPerTableGeneratorTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

car, car, exception, integer, mhz, plane, plane, radio, radio, session, string, test, test, transaction

The Hibernate MultipleHiLoPerTableGeneratorTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2006-2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.test.id;

import org.hibernate.Session;
import org.hibernate.Transaction;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;

/**
 * @author Emmanuel Bernard
 */
public class MultipleHiLoPerTableGeneratorTest extends BaseCoreFunctionalTestCase {
	public String[] getMappings() {
		return new String[]{ "id/Car.hbm.xml", "id/Plane.hbm.xml", "id/Radio.hbm.xml" };
	}

	@Test
	public void testDistinctId() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		int testLength = 8;
		Car[] cars = new Car[testLength];
		Plane[] planes = new Plane[testLength];
		for (int i = 0; i < testLength ; i++) {
			cars[i] = new Car();
			cars[i].setColor("Color" + i);
			planes[i] = new Plane();
			planes[i].setNbrOfSeats(i);
			s.persist(cars[i]);
			//s.persist(planes[i]);
		}
		tx.commit();
		s.close();
		for (int i = 0; i < testLength ; i++) {
			assertEquals(i+1, cars[i].getId().intValue());
			//assertEquals(i+1, planes[i].getId().intValue());
		}
		
		s = openSession();
		tx = s.beginTransaction();
		s.createQuery( "delete from Car" ).executeUpdate();
		tx.commit();
		s.close();
	}

	@Test
	public void testRollingBack() throws Throwable {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		int testLength = 3;
		Long lastId = null;
		for (int i = 0; i < testLength ; i++) {
			Car car = new Car();
			car.setColor( "color " + i );
			s.save( car );
			lastId = car.getId();
		}
		tx.rollback();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		Car car = new Car();
		car.setColor( "blue" );
		s.save( car );
		s.flush();
		tx.commit();
		s.close();

		assertEquals( "id generation was rolled back", lastId.longValue() + 1, car.getId().longValue() );

		s = openSession();
		tx = s.beginTransaction();
		s.createQuery( "delete Car" ).executeUpdate();
		tx.commit();
		s.close();
	}

	@Test
	public void testAllParams() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Radio radio = new Radio();
		radio.setFrequency("32 MHz");
		s.persist(radio);
		assertEquals( new Integer(1), radio.getId() );
		radio = new Radio();
		radio.setFrequency("32 MHz");
		s.persist(radio);
		assertEquals( new Integer(2), radio.getId() );
		tx.commit();
		s.close();
		
		s = openSession();
		tx = s.beginTransaction();
		s.createQuery( "delete from Radio" ).executeUpdate();
		tx.commit();
		s.close();
	}
}