Hibernate example source code file (OptionalJoinTest.java)

This example Hibernate source code file (OptionalJoinTest.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

basecorefunctionaltestcase, exception, exception, list, optionaljointest, override, session, session, string, test, test, thing, thing, transaction, util

The Hibernate OptionalJoinTest.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.join;

import java.util.List;

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

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

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

/**
 * @author Chris Jones and Gail Badner
 */
public class OptionalJoinTest extends BaseCoreFunctionalTestCase {
	@Override
	public String[] getMappings() {
		return new String[] { "join/Thing.hbm.xml" };
	}

	@Test
	public void testUpdateNonNullOptionalJoinToDiffNonNull() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();

		// create a new thing with a non-null name
		Thing thing = new Thing();
		thing.setName("one");
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one", thing.getName());
		// give it a new non-null name and save it
		thing.setName("one_changed");
		s.update(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one_changed", thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testUpdateNonNullOptionalJoinToDiffNonNullDetached() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();

		// create a new thing with a non-null name
		Thing thing = new Thing();
		thing.setName("one");
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one", thing.getName());
		t.commit();
		s.close();
				
		// change detached thing name to a new non-null name and save it
		thing.setName("one_changed");

		s = openSession();
		t = s.beginTransaction();
		s.update(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one_changed", thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testMergeNonNullOptionalJoinToDiffNonNullDetached() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();

		// create a new thing with a non-null name
		Thing thing = new Thing();
		thing.setName("one");
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one", thing.getName());
		t.commit();
		s.close();

		// change detached thing name to a new non-null name and save it
		thing.setName("one_changed");

		s = openSession();
		t = s.beginTransaction();
		s.merge(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one_changed", thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testUpdateNonNullOptionalJoinToNull() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();

		// create a new thing with a non-null name
		Thing thing = new Thing();
		thing.setName("one");
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one", thing.getName());
		// give it a null name and save it
		thing.setName(null);
		s.update(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertNull(thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testUpdateNonNullOptionalJoinToNullDetached() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();

		// create a new thing with a non-null name
		Thing thing = new Thing();
		thing.setName("one");
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one", thing.getName());
		t.commit();
		s.close();

		// give detached thing a null name and save it
		thing.setName(null);

		s = openSession();
		t = s.beginTransaction();
		s.update(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertNull(thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testMergeNonNullOptionalJoinToNullDetached() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();

		// create a new thing with a non-null name
		Thing thing = new Thing();
		thing.setName("one");
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertEquals("one", thing.getName());
		t.commit();
		s.close();

		// give detached thing a null name and save it
		thing.setName(null);

		s = openSession();
		t = s.beginTransaction();
		s.merge(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertNull(thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testUpdateNullOptionalJoinToNonNull() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		// create a new thing with a null name
		Thing thing = new Thing();
		thing.setName(null);
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertNull(thing.getName());
		// change name to a non-null value
		thing.setName("two");
		s.update(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = ((Thing) things.get(0));
		assertEquals("two", thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testUpdateNullOptionalJoinToNonNullDetached() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		// create a new thing with a null name
		Thing thing = new Thing();
		thing.setName(null);
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertNull(thing.getName());
		t.commit();
		s.close();

		// change detached thing name to a non-null value
		thing.setName("two");

		s = openSession();
		t = s.beginTransaction();
		s.update(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = ((Thing) things.get(0));
		assertEquals("two", thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}

	@Test
	public void testMergeNullOptionalJoinToNonNullDetached() throws Exception {
		Session s = openSession();
		Transaction t = s.beginTransaction();
		// create a new thing with a null name
		Thing thing = new Thing();
		thing.setName(null);
		s.save(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		List things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = (Thing)things.get(0);
		assertNull(thing.getName());
		t.commit();
		s.close();

		// change detached thing name to a non-null value
		thing.setName("two");

		s = openSession();
		t = s.beginTransaction();
		s.merge(thing);
		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		things = s.createQuery("from Thing").list();
		assertEquals(1, things.size());
		thing = ((Thing) things.get(0));
		assertEquals("two", thing.getName());
		s.delete(thing);
		t.commit();
		s.close();
	}
}