Hibernate example source code file (DeleteTransientEntityTest.java)

This example Hibernate source code file (DeleteTransientEntityTest.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

address, address, long, long, main, person, person, session, st, suite, suppresswarnings, test, test, transaction

The Hibernate DeleteTransientEntityTest.java source code

/*
 * 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.test.deletetransient;

import org.hibernate.Session;
import org.hibernate.Transaction;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;

/**
 * @author Steve Ebersole
 */
public class DeleteTransientEntityTest extends BaseCoreFunctionalTestCase {
	public String[] getMappings() {
		return new String[] { "deletetransient/Person.hbm.xml" };
	}

	@Test
	public void testTransientEntityDeletionNoCascades() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		s.delete( new Address() );
		t.commit();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testTransientEntityDeletionCascadingToTransientAssociation() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Person p = new Person();
		p.getAddresses().add( new Address() );
		s.delete( p );
		t.commit();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testTransientEntityDeleteCascadingToCircularity() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Person p1 = new Person();
		Person p2 = new Person();
		p1.getFriends().add( p2 );
		p2.getFriends().add( p1 );
		s.delete( p1 );
		t.commit();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testTransientEntityDeletionCascadingToDetachedAssociation() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Address address = new Address();
		address.setInfo( "123 Main St." );
		s.save( address );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		Person p = new Person();
		p.getAddresses().add( address );
		s.delete( p );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		Long count = ( Long ) s.createQuery( "select count(*) from Address" ).list().get( 0 );
		assertEquals( "delete not cascaded properly across transient entity", 0, count.longValue() );
		t.commit();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testTransientEntityDeletionCascadingToPersistentAssociation() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Address address = new Address();
		address.setInfo( "123 Main St." );
		s.save( address );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		address = ( Address ) s.get( Address.class, address.getId() );
		Person p = new Person();
		p.getAddresses().add( address );
		s.delete( p );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		Long count = ( Long ) s.createQuery( "select count(*) from Address" ).list().get( 0 );
		assertEquals( "delete not cascaded properly across transient entity", 0, count.longValue() );
		t.commit();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testCascadeAllFromClearedPersistentAssnToTransientEntity() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Person p = new Person();
		Address address = new Address();
		address.setInfo( "123 Main St." );
		p.getAddresses().add( address );
		s.save( p );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		Suite suite = new Suite();
		address.getSuites().add( suite );
		p.getAddresses().clear();
		s.saveOrUpdate( p );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		p = ( Person ) s.get( p.getClass(), p.getId() );
		assertEquals( "persistent collection not cleared", 0, p.getAddresses().size() );
		Long count = ( Long ) s.createQuery( "select count(*) from Address" ).list().get( 0 );
		assertEquals( 1, count.longValue() );
		count = ( Long ) s.createQuery( "select count(*) from Suite" ).list().get( 0 );
		assertEquals( 0, count.longValue() );
		s.delete( p );
		t.commit();
		s.close();
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testCascadeAllDeleteOrphanFromClearedPersistentAssnToTransientEntity() {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		Address address = new Address();
		address.setInfo( "123 Main St." );
		Suite suite = new Suite();
		address.getSuites().add( suite );
		s.save( address );
		t.commit();
		s.close();


		s = openSession();
		t = s.beginTransaction();
		Note note = new Note();
		note.setDescription( "a description" );
		suite.getNotes().add( note );
		address.getSuites().clear();
		s.saveOrUpdate( address );
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		Long count = ( Long ) s.createQuery( "select count(*) from Suite" ).list().get( 0 );
		assertEquals( "all-delete-orphan not cascaded properly to cleared persistent collection entities", 0, count.longValue() );
		count = ( Long ) s.createQuery( "select count(*) from Note" ).list().get( 0 );
		assertEquals( 0, count.longValue() );
		s.delete( address );
		t.commit();
		s.close();
	}
}