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Hibernate example source code file (ReadOnlySessionTest.java)

This example Hibernate source code file (ReadOnlySessionTest.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

bigdecimal, bigdecimal, datapoint, datapoint, iterator, list, long, math, query, scrollableresults, session, session, test, test, transaction, util

The Hibernate ReadOnlySessionTest.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.readonly;
import java.math.BigDecimal;
import java.util.Iterator;
import java.util.List;

import org.hibernate.CacheMode;
import org.hibernate.Hibernate;
import org.hibernate.Query;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.proxy.HibernateProxy;

import org.junit.Test;

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

/**
 * @author Gail Badner
 */
public class ReadOnlySessionTest extends AbstractReadOnlyTest {
	@Override
	public String[] getMappings() {
		return new String[] { "readonly/DataPoint.hbm.xml", "readonly/TextHolder.hbm.xml" };
	}

	@Test
	public void testReadOnlyOnProxies() {
		Session s = openSession();
		s.setCacheMode( CacheMode.IGNORE );
		s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setX( new BigDecimal( 0.1d ).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setDescription( "original" );
		s.save( dp );
		long dpId = dp.getId();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		s.beginTransaction();
		s.setDefaultReadOnly( true );
		assertTrue( s.isDefaultReadOnly() );
		dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpId ) );
		s.setDefaultReadOnly( false );
		assertFalse( "was initialized", Hibernate.isInitialized( dp ) );
		assertTrue( s.isReadOnly( dp ) );
		assertFalse( "was initialized during isReadOnly", Hibernate.isInitialized( dp ) );
		dp.setDescription( "changed" );
		assertTrue( "was not initialized during mod", Hibernate.isInitialized( dp ) );
		assertEquals( "desc not changed in memory", "changed", dp.getDescription() );
		s.flush();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		List list = s.createQuery( "from DataPoint where description = 'changed'" ).list();
		assertEquals( "change written to database", 0, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		s.getTransaction().commit();
		s.close();
	}

	@Test
	public void testReadOnlySessionDefaultQueryScroll() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.scroll(ScrollMode.FORWARD_ONLY);
		s.setDefaultReadOnly( false );
		while ( sr.next() ) {
			DataPoint dp = (DataPoint) sr.get(0);
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 1, single.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlySessionModifiableQueryScroll() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly( false )
				.scroll(ScrollMode.FORWARD_ONLY);
		while ( sr.next() ) {
			DataPoint dp = (DataPoint) sr.get(0);
			if (++i==50) {
				s.setReadOnly(dp, true);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 99, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testModifiableSessionReadOnlyQueryScroll() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		assertFalse( s.isDefaultReadOnly() );
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly( true )
				.scroll(ScrollMode.FORWARD_ONLY);
		while ( sr.next() ) {
			DataPoint dp = (DataPoint) sr.get(0);
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 1, single.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testModifiableSessionDefaultQueryReadOnlySessionScroll() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( false );
		int i = 0;
		Query query = s.createQuery("from DataPoint dp order by dp.x asc");
		s.setDefaultReadOnly( true );
		ScrollableResults sr = query.scroll(ScrollMode.FORWARD_ONLY);
		s.setDefaultReadOnly( false );
		while ( sr.next() ) {
			DataPoint dp = (DataPoint) sr.get(0);
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 1, single.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testQueryReadOnlyScroll() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = null;
		for ( int i=0; i<100; i++ ) {
			dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( false );
		int i = 0;
		Query query = s.createQuery("from DataPoint dp order by dp.x asc");
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( query.isReadOnly() );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertTrue( query.isReadOnly() );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertFalse( query.isReadOnly() );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( s.isDefaultReadOnly() );
		ScrollableResults sr = query.scroll(ScrollMode.FORWARD_ONLY);
		assertFalse( s.isDefaultReadOnly() );
		assertTrue( query.isReadOnly() );
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class, dp.getId() );		
		assertFalse( s.isReadOnly( dpLast ) );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		int nExpectedChanges = 0;
		assertFalse( s.isDefaultReadOnly() );
		while ( sr.next() ) {
			assertFalse( s.isDefaultReadOnly() );
			dp = (DataPoint) sr.get(0);
			if ( dp.getId() == dpLast.getId() ) {
				//dpLast existed in the session before executing the read-only query
				assertFalse( s.isReadOnly( dp ) );
			}
			else {
				assertTrue( s.isReadOnly( dp ) );
			}
			if (++i==50) {
				s.setReadOnly(dp, false);
				nExpectedChanges = ( dp == dpLast ? 1 : 2 );
			}
			dp.setDescription("done!");
		}
		assertFalse( s.isDefaultReadOnly() );
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( nExpectedChanges, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testQueryModifiableScroll() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = null;
		for ( int i=0; i<100; i++ ) {
			dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		int i = 0;
		Query query = s.createQuery("from DataPoint dp order by dp.x asc");
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( query.isReadOnly() );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertFalse( query.isReadOnly() );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertTrue( query.isReadOnly() );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( s.isDefaultReadOnly() );
		ScrollableResults sr = query.scroll(ScrollMode.FORWARD_ONLY);
		assertFalse( query.isReadOnly() );
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertTrue( s.isReadOnly( dpLast ) );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		int nExpectedChanges = 0;
		assertTrue( s.isDefaultReadOnly() );
		while ( sr.next() ) {
			assertTrue( s.isDefaultReadOnly() );
			dp = (DataPoint) sr.get(0);
			if ( dp.getId() == dpLast.getId() ) {
				//dpLast existed in the session before executing the read-only query
				assertTrue( s.isReadOnly( dp ) );
			}
			else {
				assertFalse( s.isReadOnly( dp ) );
			}
			if (++i==50) {
				s.setReadOnly(dp, true);
				nExpectedChanges = ( dp == dpLast ? 99 : 98 );
			}
			dp.setDescription("done!");
		}
		assertTrue( s.isDefaultReadOnly() );
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( nExpectedChanges, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlySessionDefaultQueryIterate() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		int i = 0;
		Iterator it = s.createQuery("from DataPoint dp order by dp.x asc")
				.iterate();
		s.setDefaultReadOnly( false );
		while ( it.hasNext() ) {
			DataPoint dp = (DataPoint) it.next();
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 1, single.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlySessionModifiableQueryIterate() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		int i = 0;
		Iterator it = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly( false )
				.iterate();
		while ( it.hasNext() ) {
			DataPoint dp = (DataPoint) it.next();
			if (++i==50) {
				s.setReadOnly(dp, true);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 99, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testModifiableSessionReadOnlyQueryIterate() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		assertFalse( s.isDefaultReadOnly() );
		int i = 0;
		Iterator it = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly( true )
				.iterate();
		while ( it.hasNext() ) {
			DataPoint dp = (DataPoint) it.next();
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 1, single.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testModifiableSessionDefaultQueryReadOnlySessionIterate() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		for ( int i=0; i<100; i++ ) {
			DataPoint dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( false );
		int i = 0;
		Query query = s.createQuery("from DataPoint dp order by dp.x asc");
		s.setDefaultReadOnly( true );
		Iterator it = query.iterate();
		s.setDefaultReadOnly( false );
		while ( it.hasNext() ) {
			DataPoint dp = (DataPoint) it.next();
			if (++i==50) {
				s.setReadOnly(dp, false);
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( 1, single.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testQueryReadOnlyIterate() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = null;
		for ( int i=0; i<100; i++ ) {
			dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( false );
		int i = 0;
		Query query = s.createQuery("from DataPoint dp order by dp.x asc");
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( query.isReadOnly() );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertTrue( query.isReadOnly() );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertFalse( query.isReadOnly() );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( s.isDefaultReadOnly() );
		Iterator it = query.iterate();
		assertTrue( query.isReadOnly() );
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertFalse( s.isReadOnly( dpLast ) );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		int nExpectedChanges = 0;
		assertFalse( s.isDefaultReadOnly() );
		while ( it.hasNext() ) {
			assertFalse( s.isDefaultReadOnly() );		
			dp = (DataPoint) it.next();
			assertFalse( s.isDefaultReadOnly() );
			if ( dp.getId() == dpLast.getId() ) {
				//dpLast existed in the session before executing the read-only query
				assertFalse( s.isReadOnly( dp ) );
			}
			else {
				assertTrue( s.isReadOnly( dp ) );
			}
			if (++i==50) {
				s.setReadOnly(dp, false);
				nExpectedChanges = ( dp == dpLast ? 1 : 2 );
			}
			dp.setDescription("done!");
		}
		assertFalse( s.isDefaultReadOnly() );
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( nExpectedChanges, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testQueryModifiableIterate() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = null;
		for ( int i=0; i<100; i++ ) {
			dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		int i = 0;
		Query query = s.createQuery("from DataPoint dp order by dp.x asc");
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( query.isReadOnly() );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertFalse( query.isReadOnly() );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		s.setDefaultReadOnly( false );
		assertTrue( query.isReadOnly() );
		query.setReadOnly( false );
		assertFalse( query.isReadOnly() );
		s.setDefaultReadOnly( true );
		assertTrue( s.isDefaultReadOnly() );
		Iterator it = query.iterate();
		assertFalse( query.isReadOnly() );
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertTrue( s.isReadOnly( dpLast ) );
		query.setReadOnly( true );
		assertTrue( query.isReadOnly() );
		int nExpectedChanges = 0;
		assertTrue( s.isDefaultReadOnly() );
		while ( it.hasNext() ) {
			assertTrue( s.isDefaultReadOnly() );
			dp = (DataPoint) it.next();
			assertTrue( s.isDefaultReadOnly() );
			if ( dp.getId() == dpLast.getId() ) {
				//dpLast existed in the session before executing the read-only query
				assertTrue( s.isReadOnly( dp ) );
			}
			else {
				assertFalse( s.isReadOnly( dp ) );
			}
			if (++i==50) {
				s.setReadOnly(dp, true);
				nExpectedChanges = ( dp == dpLast ? 99 : 98 );
			}
			dp.setDescription("done!");
		}
		assertTrue( s.isDefaultReadOnly() );
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( nExpectedChanges, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlyRefresh() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setDescription( "original" );
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		s.setDefaultReadOnly( true );
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertTrue( s.isReadOnly( dp ) );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.refresh( dp );
		assertTrue( s.isReadOnly( dp ) );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.setDefaultReadOnly( false );
		s.refresh( dp );
		assertTrue( s.isReadOnly( dp ) );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		t.commit();

		s.clear();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertEquals( "original", dp.getDescription() );
		s.delete( dp );
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlyRefreshDetached() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setDescription( "original" );
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( false );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertFalse( s.isReadOnly( dp ) );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.evict( dp );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertFalse( s.isReadOnly( dp ) );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.setDefaultReadOnly( true );
		s.evict( dp );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertTrue( s.isReadOnly( dp ) );
		dp.setDescription( "changed" );
		t.commit();

		s.clear();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertEquals( "original", dp.getDescription() );
		s.delete( dp );
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlyProxyRefresh() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setDescription( "original" );
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		dp = ( DataPoint ) s.load( DataPoint.class, dp.getId() );
		assertTrue( s.isReadOnly( dp ) );
		assertFalse( Hibernate.isInitialized( dp ) );
		s.refresh( dp );
		assertFalse( Hibernate.isInitialized( dp ) );
		assertTrue( s.isReadOnly( dp ) );
		s.setDefaultReadOnly( false );
		s.refresh( dp );
		assertFalse( Hibernate.isInitialized( dp ) );
		assertTrue( s.isReadOnly( dp ) );
		assertEquals( "original", dp.getDescription() );
		assertTrue( Hibernate.isInitialized( dp ) );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		assertTrue( s.isReadOnly( dp ) );
		assertTrue( s.isReadOnly( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getImplementation() ) );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertTrue( s.isReadOnly( dp ) );
		assertTrue( s.isReadOnly( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getImplementation() ) );
		s.setDefaultReadOnly( true );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.refresh( dp );
		assertTrue( s.isReadOnly( dp ) );
		assertTrue( s.isReadOnly( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getImplementation() ) );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		t.commit();

		s.clear();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertEquals( "original", dp.getDescription() );
		s.delete( dp );
		t.commit();
		s.close();

	}

	@Test
	public void testReadOnlyProxyRefreshDetached() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setDescription( "original" );
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		dp = ( DataPoint ) s.load( DataPoint.class, dp.getId() );
		assertFalse( Hibernate.isInitialized( dp ) );
		assertTrue( s.isReadOnly( dp ) );
		s.evict( dp );
		s.refresh( dp );
		assertFalse( Hibernate.isInitialized( dp ) );
		s.setDefaultReadOnly( false );
		assertTrue( s.isReadOnly( dp ) );
		s.evict( dp );
		s.refresh( dp );
		assertFalse( Hibernate.isInitialized( dp ) );
		assertFalse( s.isReadOnly( dp ) );
		assertFalse( s.isReadOnly( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getImplementation() ) );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		assertTrue( Hibernate.isInitialized( dp ) );
		s.evict( dp );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertFalse( s.isReadOnly( dp ) );
		assertFalse( s.isReadOnly( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getImplementation() ) );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.setDefaultReadOnly( true );
		s.evict( dp );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertTrue( s.isReadOnly( dp ) );
		assertTrue( s.isReadOnly( ( ( HibernateProxy ) dp ).getHibernateLazyInitializer().getImplementation() ) );		
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		t.commit();

		s.clear();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		assertEquals( "original", dp.getDescription() );
		s.delete( dp );
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlyDelete() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		s = openSession();
		s.setDefaultReadOnly( true );
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		s.setDefaultReadOnly( false );
		assertTrue( s.isReadOnly( dp ) );
		s.delete(  dp );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where id=" + dp.getId() ).list();
		assertTrue( list.isEmpty() );
		t.commit();
		s.close();

	}

	@Test
	public void testReadOnlyGetModifyAndDelete() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		s = openSession();
		s.setDefaultReadOnly( true );
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		s.setDefaultReadOnly( true );
		dp.setDescription( "a DataPoint" );
		s.delete(  dp );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where id=" + dp.getId() ).list();
		assertTrue( list.isEmpty() );
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlyModeWithExistingModifiableEntity() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = null;
		for ( int i=0; i<100; i++ ) {
			dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class,  dp.getId() );
		assertFalse( s.isReadOnly( dpLast ) );
		s.setDefaultReadOnly( true );
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.scroll(ScrollMode.FORWARD_ONLY);
		s.setDefaultReadOnly( false );
		int nExpectedChanges = 0;
		while ( sr.next() ) {
			dp = (DataPoint) sr.get(0);
			if ( dp.getId() == dpLast.getId() ) {
				//dpLast existed in the session before executing the read-only query
				assertFalse( s.isReadOnly( dp ) );
			}
			else {
				assertTrue( s.isReadOnly( dp ) );
			}
			if (++i==50) {
				s.setReadOnly(dp, false);
				nExpectedChanges = ( dp == dpLast ? 1 : 2 );
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( nExpectedChanges, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testModifiableModeWithExistingReadOnlyEntity() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = null;
		for ( int i=0; i<100; i++ ) {
			dp = new DataPoint();
			dp.setX( new BigDecimal(i * 0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
			dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
			s.save(dp);
		}
		t.commit();
		s.close();

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class,  dp.getId() );
		assertTrue( s.isReadOnly( dpLast ) );
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly(false)
				.scroll(ScrollMode.FORWARD_ONLY);
		int nExpectedChanges = 0;
		while ( sr.next() ) {
			dp = (DataPoint) sr.get(0);
			if ( dp.getId() == dpLast.getId() ) {
				//dpLast existed in the session before executing the read-only query
				assertTrue( s.isReadOnly( dp ) );
			}
			else {
				assertFalse( s.isReadOnly( dp ) );
			}
			if (++i==50) {
				s.setReadOnly(dp, true);
				nExpectedChanges = ( dp == dpLast ? 99 : 98 );
			}
			dp.setDescription("done!");
		}
		t.commit();
		s.clear();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( nExpectedChanges, list.size() );
		s.createQuery("delete from DataPoint").executeUpdate();
		t.commit();
		s.close();
	}

	@Test
	public void testReadOnlyOnTextType() {
		final String origText = "some huge text string";
		final String newText = "some even bigger text string";

		Session s = openSession();
		s.beginTransaction();
		s.setCacheMode( CacheMode.IGNORE );
		TextHolder holder = new TextHolder( origText );
		s.save( holder );
		Long id = holder.getId();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		s.setDefaultReadOnly( true );
		s.setCacheMode( CacheMode.IGNORE );
		holder = ( TextHolder ) s.get( TextHolder.class, id );
		s.setDefaultReadOnly( false );
		holder.setTheText( newText );
		s.flush();
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		holder = ( TextHolder ) s.get( TextHolder.class, id );
		assertEquals( "change written to database", origText, holder.getTheText() );
		s.delete( holder );
		s.getTransaction().commit();
		s.close();
	}

	@Test
	public void testMergeWithReadOnlyEntity() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		dp.setDescription( "description" );

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		DataPoint dpManaged = ( DataPoint ) s.get( DataPoint.class, new Long( dp.getId() ) );
		DataPoint dpMerged = ( DataPoint ) s.merge( dp );
		assertSame( dpManaged, dpMerged );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		dpManaged = ( DataPoint ) s.get( DataPoint.class, new Long( dp.getId() ) );
		assertNull( dpManaged.getDescription() );
		s.delete( dpManaged );
		t.commit();
		s.close();

	}

	@Test
	public void testMergeWithReadOnlyProxy() {
		Session s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		Transaction t = s.beginTransaction();
		DataPoint dp = new DataPoint();
		dp.setX( new BigDecimal(0.1d).setScale(19, BigDecimal.ROUND_DOWN) );
		dp.setY( new BigDecimal( Math.cos( dp.getX().doubleValue() ) ).setScale(19, BigDecimal.ROUND_DOWN) );
		s.save(dp);
		t.commit();
		s.close();

		dp.setDescription( "description" );

		s = openSession();
		s.setCacheMode(CacheMode.IGNORE);
		t = s.beginTransaction();
		s.setDefaultReadOnly( true );
		DataPoint dpProxy = ( DataPoint ) s.load( DataPoint.class, new Long( dp.getId() ) );
		assertTrue( s.isReadOnly( dpProxy ) );
		assertFalse( Hibernate.isInitialized( dpProxy ) );
		s.evict( dpProxy );
		dpProxy = ( DataPoint ) s.merge( dpProxy );
		assertTrue( s.isReadOnly( dpProxy ) );
		assertFalse( Hibernate.isInitialized( dpProxy ) );
		dpProxy = ( DataPoint ) s.merge( dp );
		assertTrue( s.isReadOnly( dpProxy ) );
		assertTrue( Hibernate.isInitialized( dpProxy ) );
		assertEquals( "description", dpProxy.getDescription() );
		s.evict( dpProxy );
		dpProxy = ( DataPoint ) s.merge( dpProxy );
		assertTrue( s.isReadOnly( dpProxy ) );
		assertTrue( Hibernate.isInitialized( dpProxy ) );
		assertEquals( "description", dpProxy.getDescription() );
		dpProxy.setDescription( null );
		dpProxy = ( DataPoint ) s.merge( dp );
		assertTrue( s.isReadOnly( dpProxy ) );
		assertTrue( Hibernate.isInitialized( dpProxy ) );
		assertEquals( "description", dpProxy.getDescription() );		
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, new Long( dp.getId() ) );
		assertNull( dp.getDescription() );
		s.delete( dp );
		t.commit();
		s.close();

	}
}

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