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Hibernate example source code file (ImmutableTest.java)

This example Hibernate source code file (ImmutableTest.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

contract, contract, contractvariation, contractvariation, hibernateproxy, info, iterator, long, long, party, session, test, test, transaction, util

The Hibernate ImmutableTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, 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.immutable;
import java.util.Iterator;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.criterion.Projections;
import org.hibernate.proxy.HibernateProxy;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

/**
 * @author Gavin King
 */
public class ImmutableTest extends BaseCoreFunctionalTestCase {
	@Override
	public void configure(Configuration cfg) {
		cfg.setProperty( Environment.GENERATE_STATISTICS, "true");
		cfg.setProperty( Environment.STATEMENT_BATCH_SIZE, "0" );
	}	

	@Override
	public String[] getMappings() {
		return new String[] { "immutable/ContractVariation.hbm.xml" };
	}

	@Test
	public void testChangeImmutableEntityProxyToModifiable() {
		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");

		clearCounts();

		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );

		try {
			assertTrue( c instanceof HibernateProxy );
			s.setReadOnly( c, false );
		}
		catch (IllegalStateException ex) {
			// expected
		}
		finally {
			t.rollback();
			s.close();
		}

		s = openSession();
		t = s.beginTransaction();
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testChangeImmutableEntityToModifiable() {
		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");

		clearCounts();

		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );

		try {
			assertTrue( c instanceof HibernateProxy );
			s.setReadOnly( ( ( HibernateProxy ) c ).getHibernateLazyInitializer().getImplementation(), false );
		}
		catch (IllegalStateException ex) {
			// expected
		}
		finally {
			t.rollback();
			s.close();
		}

		s = openSession();
		t = s.beginTransaction();
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testPersistImmutable() {
		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");

		clearCounts();

		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testPersistUpdateImmutableInSameTransaction() {
		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");

		clearCounts();

		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		c.setCustomerName( "gail" );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testSaveImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.save(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testSaveOrUpdateImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.saveOrUpdate(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testRefreshImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");

		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.saveOrUpdate( c );
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		// refresh detached
		s.refresh( c );
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );
		clearCounts();

		c.setCustomerName( "joe" );

		s = openSession();
		t = s.beginTransaction();
		// refresh updated detached
		s.refresh( c );
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		c.setCustomerName("foo bar");
		cv1 = (ContractVariation) c.getVariations().iterator().next();
		cv1.setText("blah blah");
		assertTrue( s.isReadOnly( cv1 ) );
		assertFalse( s.contains( cv2 ) );
		t.commit();
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertFalse( s.contains( cv2 ) );
		s.close();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testPersistAndUpdateImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		c.setCustomerName( "Sherman" );
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		c.setCustomerName("foo bar");
		cv1 = (ContractVariation) c.getVariations().iterator().next();
		cv1.setText("blah blah");
		assertTrue( s.isReadOnly( cv1 ) );
		assertFalse( s.contains( cv2 ) );
		t.commit();
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertFalse( s.contains( cv2 ) );
		s.close();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testUpdateAndDeleteManagedImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		c.setCustomerName( "Sherman" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testGetAndDeleteManagedImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.get( Contract.class, c.getId() );
		assertTrue( s.isReadOnly( c ) );
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		c.setCustomerName( "Sherman" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testDeleteDetachedImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		s.delete( c );
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertNull( c );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testDeleteDetachedModifiedImmutable() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c.setCustomerName( "sherman" );
		s.delete( c );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );		
	}


	@Test
	public void testImmutableParentEntityWithUpdate() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c.setCustomerName("foo bar");
		s.update( c );
		assertTrue( s.isReadOnly( c ) );
		for ( Iterator it = c.getVariations().iterator(); it.hasNext(); ) {
			assertTrue( s.contains( it.next() ) );
		}
		t.commit();
		assertTrue( s.isReadOnly( c ) );
		for ( Iterator it = c.getVariations().iterator(); it.hasNext(); ) {
			ContractVariation cv = ( ContractVariation ) it.next();
			assertTrue( s.contains( cv ) );
			assertTrue( s.isReadOnly( cv ) );
		}
		s.close();

		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutableChildEntityWithUpdate() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		cv1 = (ContractVariation) c.getVariations().iterator().next();
		cv1.setText("blah blah");
		s.update( c );
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.contains( cv1 ) );
		assertTrue( s.contains( cv2 ) );
		t.commit();
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		s.close();

		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutableCollectionWithUpdate() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c.getVariations().add( new ContractVariation(3, c) );
		s.update( c );
		try {
			t.commit();
			fail( "should have failed because reassociated object has a dirty collection");
		}
		catch ( HibernateException ex ) {
			// expected
		}
		finally {
			t.rollback();
			s.close();
		}

		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testUnmodifiedImmutableParentEntityWithMerge() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = ( Contract ) s.merge( c );
		assertTrue( s.isReadOnly( c ) );
		assertTrue( Hibernate.isInitialized( c.getVariations() ) );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		cv2 = (ContractVariation) it.next();
		assertTrue( s.isReadOnly( cv1 ) );
		assertTrue( s.isReadOnly( cv2 ) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutableParentEntityWithMerge() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c.setCustomerName("foo bar");
		c = ( Contract ) s.merge( c );
		assertTrue( s.isReadOnly( c ) );
		assertTrue( Hibernate.isInitialized( c.getVariations() ) );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		cv2 = (ContractVariation) it.next();
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( c ) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutableChildEntityWithMerge() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		cv1 = (ContractVariation) c.getVariations().iterator().next();
		cv1.setText("blah blah");
		c = ( Contract ) s.merge( c );
		assertTrue( s.isReadOnly( c ) );
		assertTrue( Hibernate.isInitialized( c.getVariations() ) );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		cv2 = (ContractVariation) it.next();
		assertTrue( s.isReadOnly( c ) );
		assertTrue( s.isReadOnly( c ) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutableCollectionWithMerge() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );

		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c.getVariations().add( new ContractVariation(3, c) );
		s.merge( c );
		try {
			t.commit();
			fail( "should have failed because an immutable collection was changed");
		}
		catch ( HibernateException ex ) {
			// expected
			t.rollback();
		}
		finally {
			s.close();
		}

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );		
	}

	@Test
	public void testNewEntityViaImmutableEntityWithImmutableCollectionUsingSaveOrUpdate() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		cv1.getInfos().add( new Info( "cv1 info" ) );
		s.saveOrUpdate( c );
		t.commit();
		s.close();

		assertInsertCount( 1 );
		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		assertEquals( 1, cv1.getInfos().size() );
		assertEquals( "cv1 info", ( ( Info ) cv1.getInfos().iterator().next() ).getText() );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}

	@Test
	public void testNewEntityViaImmutableEntityWithImmutableCollectionUsingMerge() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 3 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		cv1.getInfos().add( new Info( "cv1 info" ) );
		s.merge( c );
		t.commit();
		s.close();

		assertInsertCount( 1 );
		assertUpdateCount( 0 );

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		assertEquals( 1, cv1.getInfos().size() );
		assertEquals( "cv1 info", ( ( Info ) cv1.getInfos().iterator().next() ).getText() );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}

	@Test
	public void testUpdatedEntityViaImmutableEntityWithImmutableCollectionUsingSaveOrUpdate() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		Info cv1Info = new Info( "cv1 info" );
		cv1.getInfos().add( cv1Info );
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 4 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		cv1Info.setText( "new cv1 info" );
		s.saveOrUpdate( c );
		t.commit();
		s.close();

		assertInsertCount( 0 );
		assertUpdateCount( 1 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		assertEquals( 1, cv1.getInfos().size() );
		assertEquals( "new cv1 info", ( ( Info ) cv1.getInfos().iterator().next() ).getText() );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}

	@Test
	public void testUpdatedEntityViaImmutableEntityWithImmutableCollectionUsingMerge() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		Info cv1Info = new Info( "cv1 info" );
		cv1.getInfos().add( cv1Info );
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 4 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		cv1Info.setText( "new cv1 info" );
		s.merge( c );
		t.commit();
		s.close();

		assertInsertCount( 0 );
		assertUpdateCount( 1 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		assertEquals( 1, cv1.getInfos().size() );
		assertEquals( "new cv1 info", ( ( Info ) cv1.getInfos().iterator().next() ).getText() );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}

	@Test
	public void testImmutableEntityAddImmutableToInverseMutableCollection() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		Party party = new Party( "a party" );
		s.persist( party );
		t.commit();
		s.close();

		assertInsertCount( 4 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c.addParty( new Party( "a new party" ) );
		s.update( c );
		t.commit();
		s.close();

		assertInsertCount( 1 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c.addParty( party );
		s.update( c );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		//assertEquals( 2, c.getParties().size() );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}
	
	@Test
	public void testImmutableEntityRemoveImmutableFromInverseMutableCollection() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Party party = new Party( "party1" );
		c.addParty( party );
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 4 );
		assertUpdateCount( 0 );
		clearCounts();

		party = ( Party ) c.getParties().iterator().next();
		c.removeParty( party );

		s = openSession();
		t = s.beginTransaction();
		s.update( c );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		//assertEquals( 0, c.getParties().size() );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}

	@Test
	public void testImmutableEntityRemoveImmutableFromInverseMutableCollectionByDelete() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Party party = new Party( "party1" );
		c.addParty( party );
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 4 );
		assertUpdateCount( 0 );
		clearCounts();

		party = ( Party ) c.getParties().iterator().next();

		s = openSession();
		t = s.beginTransaction();
		s.delete( party );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 1 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertEquals( 0, c.getParties().size() );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 3 );
	}

	@Test
	public void testImmutableEntityRemoveImmutableFromInverseMutableCollectionByDeref() {
		clearCounts();

		Contract c = new Contract( null, "gavin", "phone");
		ContractVariation cv1 = new ContractVariation(1, c);
		cv1.setText("expensive");
		ContractVariation cv2 = new ContractVariation(2, c);
		cv2.setText("more expensive");
		Party party = new Party( "party1" );
		c.addParty( party );
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.persist(c);
		t.commit();
		s.close();

		assertInsertCount( 4 );
		assertUpdateCount( 0 );
		clearCounts();

		party = ( Party ) c.getParties().iterator().next();
		party.setContract( null );

		s = openSession();
		t = s.beginTransaction();
		s.update( party );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		party = ( Party ) s.get( Party.class, party.getId() );
		assertNotNull( party.getContract() );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		c = (Contract) s.createCriteria(Contract.class).uniqueResult();
		assertEquals( c.getCustomerName(), "gavin" );
		assertEquals( c.getVariations().size(), 2 );
		Iterator it = c.getVariations().iterator();
		cv1 = (ContractVariation) it.next();
		assertEquals( cv1.getText(), "expensive" );
		cv2 = (ContractVariation) it.next();
		assertEquals( cv2.getText(), "more expensive" );
		assertEquals( 1, c.getParties().size() );
	    party = ( Party ) c.getParties().iterator().next();
		assertEquals( "party1", party.getName() );
		assertSame( c, party.getContract() );
		s.delete(c);
		assertEquals( s.createCriteria(Contract.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		assertEquals( s.createCriteria(ContractVariation.class).setProjection( Projections.rowCount() ).uniqueResult(), new Long(0) );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 4 );
	}

	protected void clearCounts() {
		sessionFactory().getStatistics().clear();
	}

	protected void assertInsertCount(int expected) {
		int inserts = ( int ) sessionFactory().getStatistics().getEntityInsertCount();
		assertEquals( "unexpected insert count", expected, inserts );
	}

	protected void assertUpdateCount(int expected) {
		int updates = ( int ) sessionFactory().getStatistics().getEntityUpdateCount();
		assertEquals( "unexpected update counts", expected, updates );
	}

	protected void assertDeleteCount(int expected) {
		int deletes = ( int ) sessionFactory().getStatistics().getEntityDeleteCount();
		assertEquals( "unexpected delete counts", expected, deletes );
	}
}

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