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Hibernate example source code file (ManyToOneTest.java)

This example Hibernate source code file (ManyToOneTest.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, customer, discount, exception, exception, node, nodepk, orderline, session, session, test, test, transaction, transaction, util

The Hibernate ManyToOneTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 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.annotations.manytoone;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.hibernate.Hibernate;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import org.hibernate.test.annotations.Company;
import org.hibernate.test.annotations.Customer;
import org.hibernate.test.annotations.Discount;
import org.hibernate.test.annotations.Flight;
import org.hibernate.test.annotations.Passport;
import org.hibernate.test.annotations.Ticket;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

/**
 * @author Emmanuel Bernard
 */
public class ManyToOneTest extends BaseCoreFunctionalTestCase {
	@Test
	public void testEager() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Color c = new Color();
		c.setName( "Yellow" );
		s.persist( c );
		Car car = new Car();
		car.setBodyColor( c );
		s.persist( car );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		car = (Car) s.get( Car.class, car.getId() );
		tx.commit();
		s.close();
		assertNotNull( car );
		assertNotNull( car.getBodyColor() );
		assertEquals( "Yellow", car.getBodyColor().getName() );
	}

	@Test
	public void testDefaultMetadata() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Color c = new Color();
		c.setName( "Blue" );
		s.persist( c );
		Car car = new Car();
		car.setBodyColor( c );
		s.persist( car );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		car = (Car) s.get( Car.class, car.getId() );
		assertNotNull( car );
		assertNotNull( car.getBodyColor() );
		assertEquals( c.getId(), car.getBodyColor().getId() );
		tx.rollback();
		s.close();
	}

	@Test
	public void testCreate() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Flight firstOne = new Flight();
		firstOne.setId( new Long( 1 ) );
		firstOne.setName( "AF0101" );
		firstOne.setDuration( new Long( 1000 ) );
		Company frenchOne = new Company();
		frenchOne.setName( "Air France" );
		firstOne.setCompany( frenchOne );
		s.persist( firstOne );
		tx.commit();
		s.close();
		assertNotNull( "identity id should work", frenchOne.getId() );

		s = openSession();
		tx = s.beginTransaction();
		firstOne = (Flight) s.get( Flight.class, new Long( 1 ) );
		assertNotNull( firstOne.getCompany() );
		assertEquals( frenchOne.getName(), firstOne.getCompany().getName() );
		tx.commit();
		s.close();
	}

	@Test
	public void testCascade() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Discount discount = new Discount();
		discount.setDiscount( 20.12 );
		Customer customer = new Customer();
		Collection discounts = new ArrayList();
		discounts.add( discount );
		customer.setName( "Quentin Tarantino" );
		discount.setOwner( customer );
		customer.setDiscountTickets( discounts );
		s.persist( discount );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		discount = (Discount) s.get( Discount.class, discount.getId() );
		assertNotNull( discount );
		assertEquals( 20.12, discount.getDiscount(), 0.01 );
		assertNotNull( discount.getOwner() );
		customer = new Customer();
		customer.setName( "Clooney" );
		discount.setOwner( customer );
		discounts = new ArrayList();
		discounts.add( discount );
		customer.setDiscountTickets( discounts );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		discount = (Discount) s.get( Discount.class, discount.getId() );
		assertNotNull( discount );
		assertNotNull( discount.getOwner() );
		assertEquals( "Clooney", discount.getOwner().getName() );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		customer = (Customer) s.get( Customer.class, customer.getId() );
		s.delete( customer );
		tx.commit();
		s.close();
	}

	@Test
	public void testFetch() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Discount discount = new Discount();
		discount.setDiscount( 20 );
		Customer customer = new Customer();
		Collection discounts = new ArrayList();
		discounts.add( discount );
		customer.setName( "Quentin Tarantino" );
		discount.setOwner( customer );
		customer.setDiscountTickets( discounts );
		s.persist( discount );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		discount = (Discount) s.get( Discount.class, discount.getId() );
		assertNotNull( discount );
		assertFalse( Hibernate.isInitialized( discount.getOwner() ) );
		tx.commit();

		s = openSession();
		tx = s.beginTransaction();
		discount = (Discount) s.load( Discount.class, discount.getId() );
		assertNotNull( discount );
		assertFalse( Hibernate.isInitialized( discount.getOwner() ) );
		tx.commit();

		s = openSession();
		tx = s.beginTransaction();
		s.delete( s.get( Discount.class, discount.getId() ) );
		tx.commit();
		s.close();
	}

	@Test
	public void testCompositeFK() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		ParentPk ppk = new ParentPk();
		ppk.firstName = "John";
		ppk.lastName = "Doe";
		Parent p = new Parent();
		p.age = 45;
		p.id = ppk;
		s.persist( p );
		Child c = new Child();
		c.parent = p;
		s.persist( c );
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		//FIXME: fix this when the small parser bug will be fixed
		Query q = s.createQuery( "from " + Child.class.getName() ); //+ " c where c.parent.id.lastName = :lastName");
		//q.setString("lastName", p.id.lastName);
		List result = q.list();
		assertEquals( 1, result.size() );
		Child c2 = (Child) result.get( 0 );
		assertEquals( c2.id, c.id );
		tx.commit();
		s.close();
	}

	@Test
	public void testImplicitCompositeFk() throws Exception {
		Session s;
		Transaction tx;
		s = openSession();
		tx = s.beginTransaction();
		Node n1 = new Node();
		n1.setDescription( "Parent" );
		NodePk n1pk = new NodePk();
		n1pk.setLevel( 1 );
		n1pk.setName( "Root" );
		n1.setId( n1pk );
		Node n2 = new Node();
		NodePk n2pk = new NodePk();
		n2pk.setLevel( 2 );
		n2pk.setName( "Level 1: A" );
		n2.setParent( n1 );
		n2.setId( n2pk );
		s.persist( n2 );
		tx.commit();

		s = openSession();
		tx = s.beginTransaction();
		n2 = (Node) s.get( Node.class, n2pk );
		assertNotNull( n2 );
		assertNotNull( n2.getParent() );
		assertEquals( 1, n2.getParent().getId().getLevel() );
		tx.commit();
		s.close();
	}

	@Test
	public void testManyToOneNonPk() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Order order = new Order();
		order.setOrderNbr( "123" );
		s.persist( order );
		OrderLine ol = new OrderLine();
		ol.setItem( "Mouse" );
		ol.setOrder( order );
		s.persist( ol );
		s.flush();
		s.clear();
		ol = (OrderLine) s.get( OrderLine.class, ol.getId() );
		assertNotNull( ol.getOrder() );
		assertEquals( "123", ol.getOrder().getOrderNbr() );
		assertTrue( ol.getOrder().getOrderLines().contains( ol ) );
		tx.rollback();
		s.close();
	}

	@Test
	public void testManyToOneNonPkSecondaryTable() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Order order = new Order();
		order.setOrderNbr( "123" );
		s.persist( order );
		OrderLine ol = new OrderLine();
		ol.setItem( "Mouse" );
		ol.setReplacementOrder( order );
		s.persist( ol );
		s.flush();
		s.clear();
		ol = (OrderLine) s.get( OrderLine.class, ol.getId() );
		assertNotNull( ol.getReplacementOrder() );
		assertEquals( "123", ol.getReplacementOrder().getOrderNbr() );
		assertFalse( ol.getReplacementOrder().getOrderLines().contains( ol ) );
		tx.rollback();
		s.close();
	}

	@Test
	public void testTwoManyToOneNonPk() throws Exception {
		//2 many to one non pk pointing to the same referencedColumnName should not fail
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		org.hibernate.test.annotations.manytoone.Customer customer = new org.hibernate.test.annotations.manytoone.Customer();
		customer.userId="123";
		org.hibernate.test.annotations.manytoone.Customer customer2 = new org.hibernate.test.annotations.manytoone.Customer();
		customer2.userId="124";
		s.persist( customer2 );
		s.persist( customer );
		Deal deal = new Deal();
		deal.from = customer;
		deal.to = customer2;
		s.persist( deal );
		s.flush();
		s.clear();
		deal = (Deal) s.get( Deal.class, deal.id );
		assertNotNull( deal.from );
		assertNotNull( deal.to );
		tx.rollback();
		s.close();
	}

	@Test
	public void testFormulaOnOtherSide() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Frame frame = new Frame();
		frame.setName( "Prada" );
		s.persist( frame );
		Lens l = new Lens();
		l.setFocal( 2.5f );
		l.setFrame( frame );
		s.persist( l );
		Lens r = new Lens();
		r.setFocal( 1.2f);
		r.setFrame( frame );
		s.persist( r );
		s.flush();
		s.clear();
		frame = (Frame) s.get( Frame.class, frame.getId() );
		assertEquals( 2, frame.getLenses().size() );
		assertTrue( frame.getLenses().iterator().next().getLength() <= 1/1.2f );
		assertTrue( frame.getLenses().iterator().next().getLength() >= 1/2.5f );
		tx.rollback();
		s.close();
	}


	@Override
	protected Class[] getAnnotatedClasses() {
		return new Class[]{
				Deal.class,
				org.hibernate.test.annotations.manytoone.Customer.class,
				Car.class,
				Color.class,
				Flight.class,
				Company.class,
				Customer.class,
				Discount.class,
				Ticket.class,
				Passport.class,
				Parent.class,
				Child.class,
				Node.class,
				User.class,
				DistrictUser.class,
				Order.class,
				OrderLine.class,
				Frame.class,
				Lens.class
		};
	}

}

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