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Hibernate example source code file (ImmutableTest.java)

This example Hibernate source code file (ImmutableTest.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

class, country, country, france, germany, hibernateexception, session, state, state, test, test, transaction, util, wrong, wrong

The Hibernate ImmutableTest.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.annotations.immutable;

import java.util.ArrayList;
import java.util.List;

import org.jboss.logging.Logger;

import org.hibernate.AnnotationException;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import org.junit.Test;

import org.hibernate.testing.ServiceRegistryBuilder;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

/**
 * Tests for <code>Immutable annotation.
 *
 * @author Hardy Ferentschik
 */
@SuppressWarnings("unchecked")
public class ImmutableTest extends BaseCoreFunctionalTestCase {
	private static final Logger log = Logger.getLogger( ImmutableTest.class );

	@Test
	public void testImmutableEntity() throws Exception {
		Session s = openSession();
		Transaction tx = s.beginTransaction();
		Country country = new Country();
		country.setName("Germany");
		s.persist(country);
		tx.commit();
		s.close();

		// try changing the entity
		s = openSession();
		tx = s.beginTransaction();
		Country germany = (Country) s.get(Country.class, country.getId());
		assertNotNull(germany);
		germany.setName("France");
		assertEquals("Local name can be changed", "France", germany.getName());
		s.save(germany);
		tx.commit();
		s.close();

		// retrieving the country again - it should be unmodified
		s = openSession();
		tx = s.beginTransaction();
		germany = (Country) s.get(Country.class, country.getId());
		assertNotNull(germany);
		assertEquals("Name should not have changed", "Germany", germany.getName());
		tx.commit();
		s.close();
	}

	@Test
	public void testImmutableCollection() {
		Country country = new Country();
		country.setName("Germany");
		List states = new ArrayList<State>();
		State bayern = new State();
		bayern.setName("Bayern");
		State hessen = new State();
		hessen.setName("Hessen");
		State sachsen = new State();
		sachsen.setName("Sachsen");
		states.add(bayern);
		states.add(hessen);
		states.add(sachsen);
		country.setStates(states);

		Session s = openSession();
		Transaction tx = s.beginTransaction();
		s.persist(country);
		tx.commit();
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		Country germany = (Country) s.get(Country.class, country.getId());
		assertNotNull(germany);
		assertEquals("Wrong number of states", 3, germany.getStates().size());

		// try adding a state
		State foobar = new State();
		foobar.setName("foobar");
		s.save(foobar);
		germany.getStates().add(foobar);
		try {
			tx.commit();
			fail();
		}
		catch (HibernateException e) {
			assertTrue(e.getMessage().contains("changed an immutable collection instance"));
            log.debug("success");
		}
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		germany = (Country) s.get(Country.class, country.getId());
		assertNotNull(germany);
		assertEquals("Wrong number of states", 3, germany.getStates().size());

		// try deleting a state
		germany.getStates().remove(0);
		try {
			tx.commit();
			fail();
		} catch (HibernateException e) {
			assertTrue(e.getMessage().contains("changed an immutable collection instance"));
            log.debug("success");
		}
		s.close();

		s = openSession();
		tx = s.beginTransaction();
		germany = (Country) s.get(Country.class, country.getId());
		assertNotNull(germany);
		assertEquals("Wrong number of states", 3, germany.getStates().size());
		tx.commit();
		s.close();
	}

	@Test
	public void testMiscplacedImmutableAnnotation() {
		try {
			Configuration config = new Configuration();
			config.addAnnotatedClass(Foobar.class);
			config.buildSessionFactory( ServiceRegistryBuilder.buildServiceRegistry( config.getProperties() ) );
			fail();
		}
		catch (AnnotationException ae) {
            log.debug("succes");
		}
	}

	@Override
    protected Class[] getAnnotatedClasses() {
		return new Class[] { Country.class, State.class};
	}
}

Other Hibernate examples (source code examples)

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