/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2009-2011, 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.ejb.criteria.basic;
import javax.persistence.EntityManager;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.ParameterExpression;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import javax.persistence.metamodel.SingularAttribute;
import org.hibernate.ejb.test.BaseEntityManagerFunctionalTestCase;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
/**
* @author Steve Ebersole
*/
public class BasicCriteriaUsageTest extends BaseEntityManagerFunctionalTestCase {
@Override
public Class[] getAnnotatedClasses() {
return new Class[] { Wall.class };
}
@Test
public void testParameterCollection() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Wall> criteria = em.getCriteriaBuilder().createQuery( Wall.class );
Root<Wall> from = criteria.from( Wall.class );
ParameterExpression param = em.getCriteriaBuilder().parameter( String.class );
SingularAttribute<? super Wall,?> colorAttribute = em.getMetamodel()
.entity( Wall.class )
.getDeclaredSingularAttribute( "color" );
assertNotNull( "metamodel returned null singular attribute", colorAttribute );
Predicate predicate = em.getCriteriaBuilder().equal( from.get( colorAttribute ), param );
criteria.where( predicate );
assertEquals( 1, criteria.getParameters().size() );
em.getTransaction().commit();
em.close();
}
@Test
public void testTrivialCompilation() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
CriteriaQuery<Wall> criteria = em.getCriteriaBuilder().createQuery( Wall.class );
criteria.from( Wall.class );
em.createQuery( criteria ).getResultList();
em.getTransaction().commit();
em.close();
}
}