/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.test.ondemandload;
import java.math.BigDecimal;
import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.junit.After;
import org.junit.Before;
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.assertTrue;
public class LazyLoadingTest extends BaseCoreFunctionalTestCase {
@Before
public void setUpData() {
Session s = openSession();
s.beginTransaction();
Store store = new Store( 1 )
.setName( "Acme Super Outlet" );
s.persist( store );
Product product = new Product( "007" )
.setName( "widget" )
.setDescription( "FooBar" );
s.persist( product );
store.addInventoryProduct( product )
.setQuantity( 10L )
.setStorePrice( new BigDecimal( 500 ) );
s.getTransaction().commit();
s.close();
}
@After
public void cleanUpData() {
Session s = openSession();
s.beginTransaction();
s.delete( s.get( Store.class, 1 ) );
s.delete( s.get( Product.class, "007" ) );
s.getTransaction().commit();
s.close();
}
@Test
public void testLazyCollectionLoadingWithClearedSession() {
sessionFactory().getStatistics().clear();
Session s = openSession();
s.beginTransaction();
// first load the store, making sure collection is not initialized
Store store = (Store) s.get( Store.class, 1 );
assertNotNull( store );
assertFalse( Hibernate.isInitialized( store.getInventories() ) );
assertEquals( 1, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 0, sessionFactory().getStatistics().getSessionCloseCount() );
// then clear session and try to initialize collection
s.clear();
store.getInventories().size();
assertTrue( Hibernate.isInitialized( store.getInventories() ) );
assertEquals( 2, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 1, sessionFactory().getStatistics().getSessionCloseCount() );
s.clear();
store = (Store) s.get( Store.class, 1 );
assertNotNull( store );
assertFalse( Hibernate.isInitialized( store.getInventories() ) );
assertEquals( 2, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 1, sessionFactory().getStatistics().getSessionCloseCount() );
s.clear();
store.getInventories().iterator();
assertTrue( Hibernate.isInitialized( store.getInventories() ) );
assertEquals( 3, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 2, sessionFactory().getStatistics().getSessionCloseCount() );
s.getTransaction().commit();
s.close();
}
@Test
public void testLazyCollectionLoadingWithClosedSession() {
sessionFactory().getStatistics().clear();
Session s = openSession();
s.beginTransaction();
// first load the store, making sure collection is not initialized
Store store = (Store) s.get( Store.class, 1 );
assertNotNull( store );
assertFalse( Hibernate.isInitialized( store.getInventories() ) );
assertEquals( 1, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 0, sessionFactory().getStatistics().getSessionCloseCount() );
// close the session and try to initialize collection
s.getTransaction().commit();
s.close();
assertEquals( 1, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 1, sessionFactory().getStatistics().getSessionCloseCount() );
store.getInventories().size();
assertTrue( Hibernate.isInitialized( store.getInventories() ) );
assertEquals( 2, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 2, sessionFactory().getStatistics().getSessionCloseCount() );
}
@Test
public void testLazyEntityLoadingWithClosedSession() {
sessionFactory().getStatistics().clear();
Session s = openSession();
s.beginTransaction();
// first load the store, making sure it is not initialized
Store store = (Store) s.load( Store.class, 1 );
assertNotNull( store );
assertFalse( Hibernate.isInitialized( store ) );
assertEquals( 1, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 0, sessionFactory().getStatistics().getSessionCloseCount() );
// close the session and try to initialize store
s.getTransaction().commit();
s.close();
assertEquals( 1, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 1, sessionFactory().getStatistics().getSessionCloseCount() );
store.getName();
assertTrue( Hibernate.isInitialized( store ) );
assertEquals( 2, sessionFactory().getStatistics().getSessionOpenCount() );
assertEquals( 2, sessionFactory().getStatistics().getSessionCloseCount() );
}
@Override
protected void configure(Configuration cfg) {
super.configure( cfg );
cfg.setProperty( Environment.ENABLE_LAZY_LOAD_NO_TRANS, "true" );
cfg.setProperty( Environment.GENERATE_STATISTICS, "true" );
}
@Override
protected Class[] getAnnotatedClasses() {
return new Class[] {
Store.class,
Inventory.class,
Product.class
};
}
}