/*
* 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.ejb.test;
import static org.junit.Assert.assertThat;
import static org.hamcrest.core.Is.is;
import javax.persistence.EntityManager;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import org.junit.Test;
/**
*
*/
public class CountEntityWithCompositeIdTest extends BaseEntityManagerFunctionalTestCase {
@Test
public void shouldCount() {
EntityManager em = getOrCreateEntityManager();
CriteriaBuilder cb = em.getCriteriaBuilder();
CriteriaQuery<Long> cq = cb.createQuery(Long.class);
Root<EntityWithCompositeId> r = cq.from(EntityWithCompositeId.class);
cq.multiselect(cb.count(r));
assertThat(em.createQuery(cq).getSingleResult().intValue(), is(0));
}
@Override
protected Class[] getAnnotatedClasses() {
return new Class[] {EntityWithCompositeId.class, CompositeId.class};
}
}