Hibernate example source code file (WithClauseTest.java)

This example Hibernate source code file (WithClauseTest.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

animal, arraylist, human, human, invalidwithclauseexception, session, session, string, test, testdata, testdata, transaction, transaction, util, withclausetest

The Hibernate WithClauseTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2006-2011, 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.hql;
import java.util.ArrayList;
import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.hql.internal.ast.InvalidWithClauseException;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

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

/**
 * Implementation of WithClauseTest.
 *
 * @author Steve Ebersole
 */
public class WithClauseTest extends BaseCoreFunctionalTestCase {
	public String[] getMappings() {
		return new String[] { "hql/Animal.hbm.xml" };
	}

	@Test
	public void testWithClauseFailsWithFetch() {
		TestData data = new TestData();
		data.prepare();

		Session s = openSession();
		Transaction txn = s.beginTransaction();

		try {
			s.createQuery( "from Animal a inner join fetch a.offspring as o with o.bodyWeight = :someLimit" )
			        .setDouble( "someLimit", 1 )
			        .list();
			fail( "ad-hoc on clause allowed with fetched association" );
		}
		catch ( HibernateException e ) {
			// the expected response...
		}

		txn.commit();
		s.close();

		data.cleanup();
	}

	@Test
	public void testInvalidWithSemantics() {
		Session s = openSession();
		Transaction txn = s.beginTransaction();

		try {
			// PROBLEM : f.bodyWeight is a reference to a column on the Animal table; however, the 'f'
			// alias relates to the Human.friends collection which the aonther Human entity.  The issue
			// here is the way JoinSequence and Joinable (the persister) interact to generate the
			// joins relating to the sublcass/superclass tables
			s.createQuery( "from Human h inner join h.friends as f with f.bodyWeight < :someLimit" )
					.setDouble( "someLimit", 1 )
					.list();
			fail( "failure expected" );
		}
		catch( InvalidWithClauseException expected ) {
		}

		try {
			s.createQuery( "from Animal a inner join a.offspring o inner join o.mother as m inner join m.father as f with o.bodyWeight > 1" )
					.list();
			fail( "failure expected" );
		}
		catch( InvalidWithClauseException expected ) {
		}

		try {
			s.createQuery( "from Human h inner join h.offspring o with o.mother.father = :cousin" )
					.setEntity( "cousin", s.load( Human.class, new Long(123) ) )
					.list();
			fail( "failure expected" );
		}
		catch( InvalidWithClauseException expected ) {
		}

		txn.commit();
		s.close();
	}

	@Test
	public void testWithClause() {
		TestData data = new TestData();
		data.prepare();

		Session s = openSession();
		Transaction txn = s.beginTransaction();

		// one-to-many
		List list = s.createQuery( "from Human h inner join h.offspring as o with o.bodyWeight < :someLimit" )
				.setDouble( "someLimit", 1 )
				.list();
		assertTrue( "ad-hoc on did not take effect", list.isEmpty() );

		// many-to-one
		list = s.createQuery( "from Animal a inner join a.mother as m with m.bodyWeight < :someLimit" )
				.setDouble( "someLimit", 1 )
				.list();
		assertTrue( "ad-hoc on did not take effect", list.isEmpty() );

		// many-to-many
		list = s.createQuery( "from Human h inner join h.friends as f with f.nickName like 'bubba'" )
				.list();
		assertTrue( "ad-hoc on did not take effect", list.isEmpty() );

		// http://opensource.atlassian.com/projects/hibernate/browse/HHH-1930
		list = s.createQuery( "from Human h inner join h.nickNames as nicknames with nicknames = 'abc'" )
				.list();
		assertTrue( "ad-hoc on did not take effect", list.isEmpty() );

		txn.commit();
		s.close();

		data.cleanup();
	}

	private class TestData {
		public void prepare() {
			Session session = openSession();
			Transaction txn = session.beginTransaction();

			Human mother = new Human();
			mother.setBodyWeight( 10 );
			mother.setDescription( "mother" );

			Human father = new Human();
			father.setBodyWeight( 15 );
			father.setDescription( "father" );

			Human child1 = new Human();
			child1.setBodyWeight( 5 );
			child1.setDescription( "child1" );

			Human child2 = new Human();
			child2.setBodyWeight( 6 );
			child2.setDescription( "child2" );

			Human friend = new Human();
			friend.setBodyWeight( 20 );
			friend.setDescription( "friend" );

			child1.setMother( mother );
			child1.setFather( father );
			mother.addOffspring( child1 );
			father.addOffspring( child1 );

			child2.setMother( mother );
			child2.setFather( father );
			mother.addOffspring( child2 );
			father.addOffspring( child2 );

			father.setFriends( new ArrayList() );
			father.getFriends().add( friend );

			session.save( mother );
			session.save( father );
			session.save( child1 );
			session.save( child2 );
			session.save( friend );

			txn.commit();
			session.close();
		}

		public void cleanup() {
			Session session = openSession();
			Transaction txn = session.beginTransaction();
			Human father = (Human) session.createQuery( "from Human where description = 'father'" ).uniqueResult();
			father.getFriends().clear();
			session.flush();
			session.delete( session.createQuery( "from Human where description = 'friend'" ).uniqueResult() );
			session.delete( session.createQuery( "from Human where description = 'child1'" ).uniqueResult() );
			session.delete( session.createQuery( "from Human where description = 'child2'" ).uniqueResult() );
			session.delete( session.createQuery( "from Human where description = 'mother'" ).uniqueResult() );
			session.delete( father );
			session.createQuery( "delete Animal" ).executeUpdate();
			txn.commit();
			session.close();
		}
	}
}