/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.test.jpa.ql;

import org.junit.Test;

import org.hibernate.Session;
import org.hibernate.test.jpa.AbstractJPATest;

/**
 * Tests for various JPAQL compliance issues
 *
 * @author Steve Ebersole
 */
public class JPAQLComplianceTest extends AbstractJPATest {
	@Test
	public void testAliasNameSameAsUnqualifiedEntityName() {
		Session s = openSession();
		s.beginTransaction();
		s.createQuery( "select item from Item item" ).list();
		s.createQuery( "select item from Item item where item.name = 'a'" ).list();
		s.getTransaction().commit();
		s.close();
	}

	@Test
	public void testIdentifierCaseSensitive() throws Exception {
		Session s = openSession( );
		// a control test (a user reported that the JPA 'case insensitivity' support
		// caused problems with the "discriminator resolution" code; unable to reproduce)...
		s.createQuery( "from MyEntity e where e.class = MySubclassEntity" );
		s.createQuery( "from MyEntity e where e.other.class = MySubclassEntity" );
		s.createQuery( "from MyEntity where other.class = MySubclassEntity" );

		s.createQuery( "select object(I) from Item i").list();
		s.close();
	}

	@Test
	public void testIdentifierCasesensitivityAndDuplicateFromElements() throws Exception {
		Session s = openSession();
		s.createQuery( "select e from MyEntity e where exists (select 1 from MyEntity e2 where e2.other.name  = 'something' and e2.other.other = e)" );
		s.close();
	}

	@Test
	public void testGeneratedSubquery() {
		Session s = openSession();
		s.createQuery( "select c FROM Item c WHERE c.parts IS EMPTY" ).list();
		s.close();
	}

	@Test
	public void testOrderByAlias() {
		Session s = openSession();
		s.createQuery( "select c.name as myname FROM Item c ORDER BY myname" ).list();
		s.createQuery( "select p.name as name, p.stockNumber as stockNo, p.unitPrice as uPrice FROM Part p ORDER BY name, abs( p.unitPrice ), stockNo" ).list();
		s.close();
	}	
}