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Hibernate example source code file (ReadOnlyTest.java)

This example Hibernate source code file (ReadOnlyTest.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, list, long, math, scrollableresults, session, session, string, test, test, textholder, transaction, util

The Hibernate ReadOnlyTest.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.List;

import org.hibernate.Hibernate;
import org.hibernate.ScrollMode;
import org.hibernate.ScrollableResults;
import org.hibernate.Session;
import org.hibernate.Transaction;

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

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

		Session s = openSession();
		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();

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

		s = openSession();
		s.beginTransaction();
		dp = ( DataPoint ) s.load( DataPoint.class, new Long( dpId ) );
		assertFalse( "was initialized", Hibernate.isInitialized( dp ) );
		s.setReadOnly( dp, true );
		assertFalse( "was initialized during setReadOnly", 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();

		assertUpdateCount( 0 );

		s = openSession();
		s.beginTransaction();
		List list = s.createQuery( "from DataPoint where description = 'changed'" ).list();
		assertEquals( "change written to database", 0, list.size() );
		assertEquals( 1, s.createQuery("delete from DataPoint").executeUpdate() );
		s.getTransaction().commit();
		s.close();
		
		assertUpdateCount( 0 );
		//deletes from Query.executeUpdate() are not tracked
		//assertDeleteCount( 1 );
	}

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

		Session s = openSession();
		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();

		assertInsertCount( 100 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		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();

		assertUpdateCount( 1 );
		clearCounts();

		s.clear();
		t = s.beginTransaction();
		List single = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( single.size(), 1 );
		assertEquals( 100, s.createQuery("delete from DataPoint").executeUpdate() );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		//deletes from Query.executeUpdate() are not tracked
		//assertDeleteCount( 100 );
	}

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

		Session s = openSession();
		Transaction t = s.beginTransaction();
		DataPoint dpFirst = null;
		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);
		}

		assertInsertCount( 0 );
		assertUpdateCount( 0 );

		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly(true)
				.scroll(ScrollMode.FORWARD_ONLY);

		assertInsertCount( 100 );
		assertUpdateCount( 0 );
		clearCounts();

		while ( sr.next() ) {
			DataPoint dp = (DataPoint) sr.get(0);
			assertFalse( s.isReadOnly( dp ) );
			s.delete( dp );
		}
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 100 );
	}

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

		Session s = openSession();
		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);
		s.setReadOnly( dp, true );
		dp.setDescription( "different" );
		t.commit();
		s.close();

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

		s = openSession();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		s.setReadOnly( dp, true );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		t.commit();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );

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

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

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

		Session s = openSession();
		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();

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

		s = openSession();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		s.setReadOnly( dp, true );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		t.commit();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );

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

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

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

		Session s = openSession();
		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();

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

		s = openSession();
		t = s.beginTransaction();
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertFalse( s.isReadOnly( dp ) );
		s.setReadOnly( dp, true );
		dp.setDescription( "changed" );
		assertEquals( "changed", dp.getDescription() );
		s.evict( dp );
		s.refresh( dp );
		assertEquals( "original", dp.getDescription() );
		assertFalse( s.isReadOnly( dp ) );
		t.commit();

		assertInsertCount( 0 );
		assertUpdateCount( 0 );

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

		assertUpdateCount( 0 );
		assertDeleteCount( 1 );
	}

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

		Session s = openSession();
		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();

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

		s = openSession();
		t = s.beginTransaction();
		dp = ( DataPoint ) s.get( DataPoint.class, dp.getId() );
		s.setReadOnly( dp, true );
		s.delete(  dp );
		t.commit();
		s.close();

		assertUpdateCount( 0 );
		assertDeleteCount( 1 );

		s = openSession();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertTrue( list.isEmpty() );
		t.commit();
		s.close();

	}

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

		Session s = openSession();
		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();

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

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

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

		s = openSession();
		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertTrue( list.isEmpty() );
		t.commit();
		s.close();

	}

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

		Session s = openSession();
		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();

		assertInsertCount( 100 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class,  dp.getId() );
		assertFalse( s.isReadOnly( dpLast ) );
		int i = 0;
		ScrollableResults sr = s.createQuery("from DataPoint dp order by dp.x asc")
				.setReadOnly(true)
				.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
				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();

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

		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( list.size(), nExpectedChanges );
		assertEquals( 100, s.createQuery("delete from DataPoint").executeUpdate() );
		t.commit();
		s.close();

		assertUpdateCount( 0 );				
	}

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

		Session s = openSession();
		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();

		assertInsertCount( 100 );
		assertUpdateCount( 0 );
		clearCounts();

		s = openSession();
		t = s.beginTransaction();
		DataPoint dpLast = ( DataPoint ) s.get( DataPoint.class,  dp.getId() );
		assertFalse( s.isReadOnly( dpLast ) );
		s.setReadOnly( dpLast, true );
		assertTrue( s.isReadOnly( dpLast ) );
		dpLast.setDescription( "oy" );
		int i = 0;

		assertUpdateCount( 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();

		assertUpdateCount( nExpectedChanges );
		clearCounts();

		t = s.beginTransaction();
		List list = s.createQuery("from DataPoint where description='done!'").list();
		assertEquals( list.size(), nExpectedChanges );
		assertEquals( 100, s.createQuery("delete from DataPoint").executeUpdate() );
		t.commit();
		s.close();

		assertUpdateCount( 0 );		
	}

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

		clearCounts();

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

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

		s = openSession();
		s.beginTransaction();
		holder = ( TextHolder ) s.get( TextHolder.class, id );
		s.setReadOnly( holder, true );
		holder.setTheText( newText );
		s.flush();
		s.getTransaction().commit();
		s.close();

		assertUpdateCount( 0 );

		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();

		assertUpdateCount( 0 );
		assertDeleteCount( 1 );
	}

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

		Session s = openSession();
		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();

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

		dp.setDescription( "description" );

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

		assertUpdateCount( 0 );

		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();

		assertUpdateCount( 0 );
		assertDeleteCount( 1 );
	}
}

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