//$Id: FlushAndTransactionTest.java 10758 2006-11-07 23:50:28Z epbernard $
package org.hibernate.ejb.test.transaction;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.LockModeType;
import javax.persistence.RollbackException;
import javax.persistence.TransactionRequiredException;
import javax.persistence.PersistenceException;
import javax.persistence.OptimisticLockException;
import org.hibernate.ejb.HibernateEntityManagerFactory;
import org.hibernate.ejb.test.TestCase;
import org.hibernate.stat.Statistics;
import org.hibernate.Session;
/**
* @author Emmanuel Bernard
*/
public class FlushAndTransactionTest extends TestCase {
public void testAlwaysTransactionalOperations() throws Exception {
Book book = new Book();
book.name = "Le petit prince";
EntityManager em = factory.createEntityManager();
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();
}
// public void testTransactionalOperationsWhenTransactional() throws Exception {
// Book book = new Book();
// book.name = "Le petit prince";
// EntityManager em = factory.createEntityManager( PersistenceContextType.TRANSACTION );
// try {
// em.persist( book );
// fail("flush has to be inside a Tx");
// }
// catch (TransactionRequiredException e) {
// //success
// }
// try {
// em.refresh( book );
// fail("refresh has to be inside a Tx");
// }
// catch (TransactionRequiredException e) {
// //success
// }
// try {
// em.remove( book );
// fail("refresh has to be inside a Tx");
// }
// catch (TransactionRequiredException e) {
// //success
// }
// em.close();
// }
public void testTransactionalOperationsWhenExtended() throws Exception {
Book book = new Book();
book.name = "Le petit prince";
EntityManager em = factory.createEntityManager();
Statistics stats = ( (HibernateEntityManagerFactory) factory ).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 );
}
public void testMergeWhenExtended() throws Exception {
Book book = new Book();
book.name = "Le petit prince";
EntityManager em = factory.createEntityManager();
Statistics stats = ( (HibernateEntityManagerFactory) factory ).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 );
}
public void testCloseAndTransaction() throws Exception {
EntityManager em = factory.createEntityManager();
em.getTransaction().begin();
Book book = new Book();
book.name = "Java for Dummies";
em.persist( book );
em.close();
book.name = "C# for Dummies";
assertFalse( em.isOpen() );
try {
em.flush();
fail( "direct action on a closed em should fail" );
}
catch (IllegalStateException e) {
//success
}
em.getTransaction().commit();
assertFalse( em.isOpen() );
em = factory.createEntityManager();
em.getTransaction().begin();
book = em.find( Book.class, book.id );
assertEquals( "C# for Dummies", book.name );
em.remove( book );
em.getTransaction().commit();
em.close();
}
public void testTransactionCommitDoesNotFlush() throws Exception {
EntityManager em = factory.createEntityManager();
em.getTransaction().begin();
Book book = new Book();
book.name = "Java for Dummies";
em.persist( book );
em.getTransaction().commit();
em.close();
em = factory.createEntityManager();
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();
}
public void testRollbackOnlyOnPersistenceException() throws Exception {
Book book = new Book();
book.name = "Stolen keys";
book.id = null; //new Integer( 50 );
EntityManager em = factory.createEntityManager();
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();
}
}
public void testRollbackExceptionOnOptimisticLockException() throws Exception {
Book book = new Book();
book.name = "Stolen keys";
book.id = null; //new Integer( 50 );
EntityManager em = factory.createEntityManager();
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
( (Session) em.getDelegate() ).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();
}
}
public void testRollbackClearPC() throws Exception {
Book book = new Book();
book.name = "Stolen keys";
EntityManager em = factory.createEntityManager();
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();
}
public Class[] getAnnotatedClasses() {
return new Class[]{
Book.class
};
}
}