AuctionTest.java

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.test.bidi;
import java.math.BigDecimal;
import java.util.Date;

import org.junit.Test;

import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.dialect.PostgreSQL81Dialect;
import org.hibernate.dialect.PostgreSQLDialect;
import org.hibernate.testing.SkipForDialect;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

/**
 * @author Gavin King
 */
public class AuctionTest extends BaseCoreFunctionalTestCase {
	public String[] getMappings() {
		return new String[] { "bidi/Auction.hbm.xml" };
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	@SkipForDialect( value = {PostgreSQL81Dialect.class, PostgreSQLDialect.class}, comment = "doesn't like boolean=1" )
	public void testLazy() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Auction a = new Auction();
		a.setDescription( "an auction for something" );
		a.setEnd( new Date() );
		Bid b = new Bid();
		b.setAmount( new BigDecimal( 123.34 ).setScale( 19, BigDecimal.ROUND_DOWN ) );
		b.setSuccessful( true );
		b.setDatetime( new Date() );
		b.setItem( a );
		a.getBids().add( b );
		a.setSuccessfulBid( b );
		s.persist( b );
		t.commit();
		s.close();

		Long aid = a.getId();
		Long bid = b.getId();

		s = openSession();
		t = s.beginTransaction();
		b = ( Bid ) s.load( Bid.class, bid );
		assertFalse( Hibernate.isInitialized( b ) );
		a = ( Auction ) s.get( Auction.class, aid );
		assertFalse( Hibernate.isInitialized( a.getBids() ) );
		assertTrue( Hibernate.isInitialized( a.getSuccessfulBid() ) );
		assertSame( a.getBids().iterator().next(), b );
		assertSame( b, a.getSuccessfulBid() );
		assertTrue( Hibernate.isInitialized( b ) );
		assertTrue( b.isSuccessful() );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		b = ( Bid ) s.load( Bid.class, bid );
		assertFalse( Hibernate.isInitialized( b ) );
		a = ( Auction ) s.createQuery( "from Auction a left join fetch a.bids" ).uniqueResult();
		assertTrue( Hibernate.isInitialized( b ) );
		assertTrue( Hibernate.isInitialized( a.getBids() ) );
		assertSame( b, a.getSuccessfulBid() );
		assertSame( a.getBids().iterator().next(), b );
		assertTrue( b.isSuccessful() );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		b = ( Bid ) s.load( Bid.class, bid );
		a = ( Auction ) s.load( Auction.class, aid );
		assertFalse( Hibernate.isInitialized( b ) );
		assertFalse( Hibernate.isInitialized( a ) );
		s.createQuery( "from Auction a left join fetch a.successfulBid" ).list();
		assertTrue( Hibernate.isInitialized( b ) );
		assertTrue( Hibernate.isInitialized( a ) );
		assertSame( b, a.getSuccessfulBid() );
		assertFalse( Hibernate.isInitialized( a.getBids() ) );
		assertSame( a.getBids().iterator().next(), b );
		assertTrue( b.isSuccessful() );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		b = ( Bid ) s.load( Bid.class, bid );
		a = ( Auction ) s.load( Auction.class, aid );
		assertFalse( Hibernate.isInitialized( b ) );
		assertFalse( Hibernate.isInitialized( a ) );
		assertSame( s.get( Bid.class, bid ), b );
		assertTrue( Hibernate.isInitialized( b ) );
		assertSame( s.get( Auction.class, aid ), a );
		assertTrue( Hibernate.isInitialized( a ) );
		assertSame( b, a.getSuccessfulBid() );
		assertFalse( Hibernate.isInitialized( a.getBids() ) );
		assertSame( a.getBids().iterator().next(), b );
		assertTrue( b.isSuccessful() );
		t.commit();
		s.close();
	}

}