/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.ejb.test.transaction;
import javax.persistence.EntityManager;
import javax.persistence.LockModeType;
import javax.persistence.OptimisticLockException;
import javax.persistence.PersistenceException;
import javax.persistence.RollbackException;
import javax.persistence.TransactionRequiredException;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.ejb.HibernateEntityManagerFactory;
import org.hibernate.ejb.test.BaseEntityManagerFunctionalTestCase;
import org.hibernate.stat.Statistics;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* @author Emmanuel Bernard
*/
public class FlushAndTransactionTest extends BaseEntityManagerFunctionalTestCase {
@Test
public void testAlwaysTransactionalOperations() throws Exception {
Book book = new Book();
book.name = "Le petit prince";
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( book );
em.getTransaction().commit();
try {
em.flush();
fail( "flush has to be inside a Tx" );
}
catch ( TransactionRequiredException e ) {
//success
}
try {
em.lock( book, LockModeType.READ );
fail( "lock has to be inside a Tx" );
}
catch ( TransactionRequiredException e ) {
//success
}
em.getTransaction().begin();
em.remove( em.find( Book.class, book.id ) );
em.getTransaction().commit();
em.close();
}
@Test
public void testTransactionalOperationsWhenExtended() throws Exception {
Book book = new Book();
book.name = "Le petit prince";
EntityManager em = getOrCreateEntityManager();
Statistics stats = ( ( HibernateEntityManagerFactory ) entityManagerFactory() ).getSessionFactory().getStatistics();
stats.clear();
stats.setStatisticsEnabled( true );
em.persist( book );
assertEquals( 0, stats.getEntityInsertCount() );
em.getTransaction().begin();
em.flush();
em.getTransaction().commit();
assertEquals( 1, stats.getEntityInsertCount() );
em.clear();
book.name = "Le prince";
book = em.merge( book );
em.refresh( book );
assertEquals( 0, stats.getEntityUpdateCount() );
em.getTransaction().begin();
em.flush();
em.getTransaction().commit();
assertEquals( 0, stats.getEntityUpdateCount() );
book.name = "Le prince";
em.getTransaction().begin();
em.find( Book.class, book.id );
em.getTransaction().commit();
assertEquals( 1, stats.getEntityUpdateCount() );
em.remove( book );
assertEquals( 0, stats.getEntityDeleteCount() );
em.getTransaction().begin();
em.flush();
em.getTransaction().commit();
assertEquals( 1, stats.getEntityDeleteCount() );
em.close();
stats.setStatisticsEnabled( false );
}
@Test
public void testMergeWhenExtended() throws Exception {
Book book = new Book();
book.name = "Le petit prince";
EntityManager em = getOrCreateEntityManager();
Statistics stats = ( ( HibernateEntityManagerFactory ) entityManagerFactory() ).getSessionFactory().getStatistics();
em.getTransaction().begin();
em.persist( book );
assertEquals( 0, stats.getEntityInsertCount() );
em.getTransaction().commit();
em.clear(); //persist and clear
stats.clear();
stats.setStatisticsEnabled( true );
Book bookReloaded = em.find( Book.class, book.id );
book.name = "Le prince";
assertEquals( "Merge should use the available entiies in the PC", em.merge( book ), bookReloaded );
assertEquals( book.name, bookReloaded.name );
assertEquals( 0, stats.getEntityDeleteCount() );
assertEquals( 0, stats.getEntityInsertCount() );
assertEquals( "Updates should have been queued", 0, stats.getEntityUpdateCount() );
em.getTransaction().begin();
Book bookReReloaded = em.find( Book.class, bookReloaded.id );
assertEquals( "reload should return the object in PC", bookReReloaded, bookReloaded );
assertEquals( bookReReloaded.name, bookReloaded.name );
em.getTransaction().commit();
assertEquals( 0, stats.getEntityDeleteCount() );
assertEquals( 0, stats.getEntityInsertCount() );
assertEquals( "Work on Tx should flush", 1, stats.getEntityUpdateCount() );
em.getTransaction().begin();
em.remove( bookReReloaded );
em.getTransaction().commit();
em.close();
stats.setStatisticsEnabled( false );
}
@Test
public void testCloseAndTransaction() throws Exception {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Book book = new Book();
book.name = "Java for Dummies";
em.close();
assertFalse( em.isOpen() );
try {
em.flush();
fail( "direct action on a closed em should fail" );
}
catch ( IllegalStateException e ) {
//success
em.getTransaction().rollback();
}
}
@Test
public void testTransactionCommitDoesNotFlush() throws Exception {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Book book = new Book();
book.name = "Java for Dummies";
em.persist( book );
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
List result = em.createQuery( "select book from Book book where book.name = :title" ).
setParameter( "title", book.name ).getResultList();
assertEquals( "EntityManager.commit() should trigger a flush()", 1, result.size() );
em.getTransaction().commit();
em.close();
}
@Test
public void testTransactionAndContains() throws Exception {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
Book book = new Book();
book.name = "Java for Dummies";
em.persist( book );
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
List result = em.createQuery( "select book from Book book where book.name = :title" ).
setParameter( "title", book.name ).getResultList();
assertEquals( "EntityManager.commit() should trigger a flush()", 1, result.size() );
assertTrue( em.contains( result.get( 0 ) ) );
em.getTransaction().commit();
assertTrue( em.contains( result.get( 0 ) ) );
em.close();
}
@Test
public void testRollbackOnlyOnPersistenceException() throws Exception {
Book book = new Book();
book.name = "Stolen keys";
book.id = null; //new Integer( 50 );
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
try {
em.persist( book );
em.flush();
em.clear();
book.setName( "kitty kid" );
em.merge( book );
em.flush();
em.clear();
book.setName( "kitty kid2" ); //non updated version
em.merge( book );
em.flush();
fail( "optimistic locking exception" );
}
catch ( PersistenceException e ) {
//success
}
try {
em.getTransaction().commit();
fail( "Commit should be rollbacked" );
}
catch ( RollbackException e ) {
//success
}
finally {
em.close();
}
}
@Test
public void testRollbackExceptionOnOptimisticLockException() throws Exception {
Book book = new Book();
book.name = "Stolen keys";
book.id = null; //new Integer( 50 );
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( book );
em.flush();
em.clear();
book.setName( "kitty kid" );
em.merge( book );
em.flush();
em.clear();
book.setName( "kitty kid2" ); //non updated version
em.unwrap( Session.class ).update( book );
try {
em.getTransaction().commit();
fail( "Commit should be rollbacked" );
}
catch ( RollbackException e ) {
assertTrue(
"During flush a StateStateException is wrapped into a OptimisticLockException",
e.getCause() instanceof OptimisticLockException
);
}
finally {
em.close();
}
}
@Test
public void testRollbackClearPC() throws Exception {
Book book = new Book();
book.name = "Stolen keys";
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( book );
em.getTransaction().commit();
em.getTransaction().begin();
book.name = "Recovered keys";
em.merge( book );
em.getTransaction().rollback();
assertEquals( "Stolen keys", em.find( Book.class, book.id ).name );
em.close();
}
@Override
public Class[] getAnnotatedClasses() {
return new Class[] {
Book.class
};
}
}