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Hibernate example source code file (BrokenCollectionEventTest.java)

This example Hibernate source code file (BrokenCollectionEventTest.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

abstractcollectionevent, collection, collectionlisteners, collectionlisteners, failureexpected, iterator, parentwithcollection, parentwithcollection, session, session, string, test, transaction, transaction, util

The Hibernate BrokenCollectionEventTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2007-2011, 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.event.collection;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.event.spi.AbstractCollectionEvent;

import org.junit.Test;

import org.hibernate.testing.FailureExpected;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import org.hibernate.test.event.collection.association.bidirectional.manytomany.ChildWithBidirectionalManyToMany;
import org.hibernate.test.event.collection.association.unidirectional.ParentWithCollectionOfEntities;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;

/**
 * These tests are known to fail. When the functionality is corrected, the
 * corresponding method will be moved into AbstractCollectionEventTest.
 *
 * @author Gail Badner
 */
public class BrokenCollectionEventTest extends BaseCoreFunctionalTestCase {
	@Override
	public String[] getMappings() {
		return new String[] { "event/collection/association/unidirectional/onetomany/UnidirectionalOneToManySetMapping.hbm.xml" };
	}

	@Override
	protected void cleanupTest() {
		ParentWithCollection dummyParent = createParent( "dummyParent" );
		dummyParent.setChildren( createCollection() );
		Child dummyChild = dummyParent.addChild( "dummyChild" );
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		List children = s.createCriteria( dummyChild.getClass() ).list();
		List parents = s.createCriteria( dummyParent.getClass() ).list();
		for ( Iterator it = parents.iterator(); it.hasNext(); ) {
			ParentWithCollection parent = ( ParentWithCollection ) it.next();
			parent.clearChildren();
			s.delete( parent );
		}
		for ( Iterator it = children.iterator(); it.hasNext(); ) {
			s.delete( it.next() );
		}
		tx.commit();
		s.close();
	}

	public ParentWithCollection createParent(String name) {
		return new ParentWithCollectionOfEntities( name );
	}

	public Collection createCollection() {
		return new HashSet();
	}

	@Test
	@FailureExpected( jiraKey = "unknown" )
	public void testUpdateDetachedParentNoChildrenToNull() {
		CollectionListeners listeners = new CollectionListeners( sessionFactory() );
		ParentWithCollection parent = createParentWithNoChildren( "parent" );
		listeners.clear();
		assertEquals( 0, parent.getChildren().size() );
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Collection oldCollection = parent.getChildren();
		parent.newChildren( null );
		s.update( parent );
		tx.commit();
		s.close();
		int index = 0;
		checkResult( listeners, listeners.getPreCollectionRemoveListener(), parent, oldCollection, index++ );
		checkResult( listeners, listeners.getPostCollectionRemoveListener(), parent, oldCollection, index++ );
		// pre- and post- collection recreate events should be created when updating an entity with a "null" collection
		checkResult( listeners, listeners.getPreCollectionRecreateListener(), parent, index++ );
		checkResult( listeners, listeners.getPostCollectionRecreateListener(), parent, index++ );
		checkNumberOfResults( listeners, index );
	}

	// The following fails for the same reason as testUpdateDetachedParentNoChildrenToNullFailureExpected
	// When that issue is fixed, this one should also be fixed and moved into AbstractCollectionEventTest.
	/*
	public void testUpdateDetachedParentOneChildToNullFailureExpected() {
		CollectionListeners listeners = new CollectionListeners( sessionFactory() );
		ParentWithCollection parent = createParentWithOneChild( "parent", "child" );
		Child oldChild = ( Child ) parent.getChildren().iterator().next();
		assertEquals( 1, parent.getChildren().size() );
		listeners.clear();
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Collection oldCollection = parent.getChildren();
		parent.newChildren( null );
		s.update( parent );
		tx.commit();
		s.close();
		int index = 0;
		checkResult( listeners, listeners.getPreCollectionRemoveListener(), parent, oldCollection, index++ );
		checkResult( listeners, listeners.getPostCollectionRemoveListener(), parent, oldCollection, index++ );
		if ( oldChild instanceof ChildWithBidirectionalManyToMany ) {
			checkResult( listeners, listeners.getPreCollectionUpdateListener(), ( ChildWithBidirectionalManyToMany ) oldChild, index++ );
			checkResult( listeners, listeners.getPostCollectionUpdateListener(), ( ChildWithBidirectionalManyToMany ) oldChild, index++ );
		}
		// pre- and post- collection recreate events should be created when updating an entity with a "null" collection
		checkResult( listeners, listeners.getPreCollectionRecreateListener(), parent, index++ );
		checkResult( listeners, listeners.getPostCollectionRecreateListener(), parent, index++ );
		checkNumberOfResults( listeners, index );
	}
	*/

	@Test
	@FailureExpected( jiraKey = "unknown" )
	public void testSaveParentNullChildren() {
		CollectionListeners listeners = new CollectionListeners( sessionFactory() );
		ParentWithCollection parent = createParentWithNullChildren( "parent" );
		assertNull( parent.getChildren() );
		int index = 0;
		// pre- and post- collection recreate events should be created when creating an entity with a "null" collection
		checkResult( listeners, listeners.getPreCollectionRecreateListener(), parent, index++ );
		checkResult( listeners, listeners.getPostCollectionRecreateListener(), parent, index++ );
		checkNumberOfResults( listeners, index );
		listeners.clear();
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		parent = ( ParentWithCollection ) s.get( parent.getClass(), parent.getId() );
		tx.commit();
		s.close();
		assertNotNull( parent.getChildren() );
		checkNumberOfResults( listeners, 0 );
	}

	@Test
	@FailureExpected( jiraKey = "unknown" )
	public void testUpdateParentNoChildrenToNull() {
		CollectionListeners listeners = new CollectionListeners( sessionFactory() );
		ParentWithCollection parent = createParentWithNoChildren( "parent" );
		listeners.clear();
		assertEquals( 0, parent.getChildren().size() );
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		parent = ( ParentWithCollection ) s.get( parent.getClass(), parent.getId() );
		Collection oldCollection = parent.getChildren();
		parent.newChildren( null );
		tx.commit();
		s.close();
		int index = 0;
		if ( ( (PersistentCollection) oldCollection ).wasInitialized() ) {
			checkResult( listeners, listeners.getInitializeCollectionListener(), parent, oldCollection, index++ );
		}
		checkResult( listeners, listeners.getPreCollectionRemoveListener(), parent, oldCollection, index++ );
		checkResult( listeners, listeners.getPostCollectionRemoveListener(), parent, oldCollection, index++ );
		// pre- and post- collection recreate events should be created when updating an entity with a "null" collection
		checkResult( listeners, listeners.getPreCollectionRecreateListener(), parent, index++ );
		checkResult( listeners, listeners.getPostCollectionRecreateListener(), parent, index++ );
		checkNumberOfResults( listeners, index );
	}


	// The following two tests fail for the same reason as testUpdateParentNoChildrenToNullFailureExpected
	// When that issue is fixed, this one should also be fixed and moved into AbstractCollectionEventTest.
	/*
	public void testUpdateParentOneChildToNullFailureExpected() {
		CollectionListeners listeners = new CollectionListeners( sessionFactory() );
		ParentWithCollection parent = createParentWithOneChild( "parent", "child" );
		Child oldChild = ( Child ) parent.getChildren().iterator().next();
		assertEquals( 1, parent.getChildren().size() );
		listeners.clear();
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		parent = ( AbstractParentWithCollection ) s.get( parent.getClass(), parent.getId() );
		if ( oldChild instanceof ChildEntity ) {
			oldChild = ( Child ) s.get( oldChild.getClass(), ( ( ChildEntity ) oldChild ).getId() );
		}
		Collection oldCollection = parent.getChildren();
		parent.newChildren( null );
		tx.commit();
		s.close();
		int index = 0;
		if ( ( ( PersistentCollection ) oldCollection ).wasInitialized() ) {
			checkResult( listeners, listeners.getInitializeCollectionListener(), parent, oldCollection, index++ );
		}
		ChildWithBidirectionalManyToMany oldChildWithManyToMany = null;
		if ( oldChild instanceof ChildWithBidirectionalManyToMany ) {
			oldChildWithManyToMany = ( ChildWithBidirectionalManyToMany ) oldChild;
			if ( ( ( PersistentCollection ) oldChildWithManyToMany.getParents() ).wasInitialized() ) {
				checkResult( listeners, listeners.getInitializeCollectionListener(), oldChildWithManyToMany, index++ );
			}
		}
		checkResult( listeners, listeners.getPreCollectionRemoveListener(), parent, oldCollection, index++ );
		checkResult( listeners, listeners.getPostCollectionRemoveListener(), parent, oldCollection, index++ );
		if ( oldChildWithManyToMany != null ) {
			checkResult( listeners, listeners.getPreCollectionUpdateListener(), oldChildWithManyToMany, index++ );
			checkResult( listeners, listeners.getPostCollectionUpdateListener(), oldChildWithManyToMany, index++ );
		}
		// pre- and post- collection recreate events should be created when updating an entity with a "null" collection
		checkResult( listeners, listeners.getPreCollectionRecreateListener(), parent, index++ );
		checkResult( listeners, listeners.getPostCollectionRecreateListener(), parent, index++ );
		checkNumberOfResults( listeners, index );
	}

	public void testUpdateMergedParentOneChildToNullFailureExpected() {
		CollectionListeners listeners = new CollectionListeners( sessionFactory() );
		ParentWithCollection parent = createParentWithOneChild( "parent", "child" );
		assertEquals( 1, parent.getChildren().size() );
		listeners.clear();
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		parent = ( AbstractParentWithCollection ) s.merge( parent );
		Collection oldCollection = parent.getChildren();
		parent.newChildren( null );
		tx.commit();
		s.close();
		int index = 0;
		Child oldChild = ( Child ) oldCollection.iterator().next();
		ChildWithBidirectionalManyToMany oldChildWithManyToMany = null;
		if ( oldChild instanceof ChildWithBidirectionalManyToMany ) {
			oldChildWithManyToMany = ( ChildWithBidirectionalManyToMany ) oldChild;
			if ( ( ( PersistentCollection ) oldChildWithManyToMany.getParents() ).wasInitialized() ) {
		}
			checkResult( listeners, listeners.getInitializeCollectionListener(), oldChildWithManyToMany, index++ );
		}
		checkResult( listeners, listeners.getPreCollectionRemoveListener(), parent, oldCollection, index++ );
		checkResult( listeners, listeners.getPostCollectionRemoveListener(), parent, oldCollection, index++ );
		if ( oldChildWithManyToMany != null ) {
			checkResult( listeners, listeners.getPreCollectionUpdateListener(), oldChildWithManyToMany, index++ );
			checkResult( listeners, listeners.getPostCollectionUpdateListener(), oldChildWithManyToMany, index++ );
		}
		// pre- and post- collection recreate events should be created when updating an entity with a "null" collection
		checkResult( listeners, listeners.getPreCollectionRecreateListener(), parent, index++ );
		checkResult( listeners, listeners.getPostCollectionRecreateListener(), parent, index++ );
		checkNumberOfResults( listeners, index );
	}	
	*/

	private ParentWithCollection createParentWithNullChildren(String parentName) {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		ParentWithCollection parent = createParent( parentName );
		s.save( parent );
		tx.commit();
		s.close();
		return parent;
	}

	private ParentWithCollection createParentWithNoChildren(String parentName) {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		ParentWithCollection parent = createParent( parentName );
		parent.setChildren( createCollection() );
		s.save( parent );
		tx.commit();
		s.close();
		return parent;
	}

	private ParentWithCollection createParentWithOneChild(String parentName, String ChildName) {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		ParentWithCollection parent = createParent( parentName );
		parent.setChildren( createCollection() );
		parent.addChild( ChildName );
		s.save( parent );
		tx.commit();
		s.close();
		return parent;
	}

	protected void checkResult(CollectionListeners listeners,
							 CollectionListeners.Listener listenerExpected,
							 ParentWithCollection parent,
							 int index) {
		checkResult( listeners, listenerExpected, parent, parent.getChildren(), index );
	}
	protected void checkResult(CollectionListeners listeners,
							 CollectionListeners.Listener listenerExpected,
							 ChildWithBidirectionalManyToMany child,
							 int index) {
		checkResult( listeners, listenerExpected, child, child.getParents(), index );
	}

	protected void checkResult(CollectionListeners listeners,
							 CollectionListeners.Listener listenerExpected,
							 Entity ownerExpected,
							 Collection collExpected,
							 int index) {
		assertSame( listenerExpected, listeners.getListenersCalled().get( index ) );
		assertSame(
				ownerExpected,
				( ( AbstractCollectionEvent ) listeners.getEvents().get( index ) ).getAffectedOwnerOrNull()
		);
		assertEquals(
				ownerExpected.getId(),
				( ( AbstractCollectionEvent ) listeners.getEvents().get( index ) ).getAffectedOwnerIdOrNull()
		);
		assertEquals(
				ownerExpected.getClass().getName(),
				( (AbstractCollectionEvent) listeners.getEvents().get( index ) ).getAffectedOwnerEntityName()
		);
		assertSame(
				collExpected, ( ( AbstractCollectionEvent ) listeners.getEvents().get( index ) ).getCollection()
		);
	}

	private void checkNumberOfResults(CollectionListeners listeners, int nEventsExpected) {
		assertEquals( nEventsExpected, listeners.getListenersCalled().size() );
		assertEquals( nEventsExpected, listeners.getEvents().size() );
	}
}

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