/*
* 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.discriminator;
import java.math.BigDecimal;
import java.util.List;
import org.hibernate.Hibernate;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Property;
import org.hibernate.criterion.Restrictions;
import org.hibernate.proxy.HibernateProxy;
import org.junit.Test;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
/**
* @author Gavin King
*/
public class DiscriminatorTest extends BaseCoreFunctionalTestCase {
@Override
public String[] getMappings() {
return new String[] { "discriminator/Person.hbm.xml" };
}
@Test
public void testDiscriminatorSubclass() {
Session s = openSession();
Transaction t = s.beginTransaction();
Employee mark = new Employee();
mark.setName("Mark");
mark.setTitle("internal sales");
mark.setSex('M');
mark.setAddress("buckhead");
mark.setZip("30305");
mark.setCountry("USA");
Customer joe = new Customer();
joe.setName("Joe");
joe.setAddress("San Francisco");
joe.setZip("XXXXX");
joe.setCountry("USA");
joe.setComments("Very demanding");
joe.setSex('M');
joe.setSalesperson(mark);
Person yomomma = new Person();
yomomma.setName("mum");
yomomma.setSex('F');
s.save(yomomma);
s.save(mark);
s.save(joe);
assertEquals( s.createQuery("from java.io.Serializable").list().size(), 0 );
assertEquals( s.createQuery("from Person").list().size(), 3 );
assertEquals( s.createQuery("from Person p where p.class = Person").list().size(), 1 );
assertEquals( s.createQuery("from Person p where p.class = Customer").list().size(), 1 );
s.clear();
List customers = s.createQuery("from Customer c left join fetch c.salesperson").list();
for ( Object customer : customers ) {
Customer c = (Customer) customer;
assertTrue( Hibernate.isInitialized( c.getSalesperson() ) );
assertEquals( c.getSalesperson().getName(), "Mark" );
}
assertEquals( customers.size(), 1 );
s.clear();
customers = s.createQuery("from Customer").list();
for ( Object customer : customers ) {
Customer c = (Customer) customer;
assertFalse( Hibernate.isInitialized( c.getSalesperson() ) );
assertEquals( c.getSalesperson().getName(), "Mark" );
}
assertEquals( customers.size(), 1 );
s.clear();
mark = (Employee) s.get( Employee.class, new Long( mark.getId() ) );
joe = (Customer) s.get( Customer.class, new Long( joe.getId() ) );
mark.setZip("30306");
assertEquals( s.createQuery("from Person p where p.address.zip = '30306'").list().size(), 1 );
s.delete(mark);
s.delete(joe);
s.delete(yomomma);
assertTrue( s.createQuery("from Person").list().isEmpty() );
t.commit();
s.close();
}
@Test
public void testAccessAsIncorrectSubclass() {
Session s = openSession();
s.beginTransaction();
Employee e = new Employee();
e.setName( "Steve" );
e.setSex( 'M' );
e.setTitle( "grand poobah" );
s.save( e );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
Customer c = ( Customer ) s.get( Customer.class, new Long( e.getId() ) );
s.getTransaction().commit();
s.close();
assertNull( c );
s = openSession();
s.beginTransaction();
e = ( Employee ) s.get( Employee.class, new Long( e.getId() ) );
c = ( Customer ) s.get( Customer.class, new Long( e.getId() ) );
s.getTransaction().commit();
s.close();
assertNotNull( e );
assertNull( c );
s = openSession();
s.beginTransaction();
s.delete( e );
s.getTransaction().commit();
s.close();
}
@Test
public void testQuerySubclassAttribute() {
Session s = openSession();
Transaction t = s.beginTransaction();
Person p = new Person();
p.setName("Emmanuel");
p.setSex('M');
s.persist(p);
Employee q = new Employee();
q.setName("Steve");
q.setSex('M');
q.setTitle("Mr");
q.setSalary( new BigDecimal(1000) );
s.persist(q);
List result = s.createQuery("from Person where salary > 100").list();
assertEquals( result.size(), 1 );
assertSame( result.get(0), q );
result = s.createQuery("from Person where salary > 100 or name like 'E%'").list();
assertEquals( result.size(), 2 );
result = s.createCriteria(Person.class)
.add( Property.forName("salary").gt( new BigDecimal(100) ) )
.list();
assertEquals( result.size(), 1 );
assertSame( result.get(0), q );
//TODO: make this work:
/*result = s.createQuery("select salary from Person where salary > 100").list();
assertEquals( result.size(), 1 );
assertEquals( result.get(0), new BigDecimal(1000) );*/
s.delete(p);
s.delete(q);
t.commit();
s.close();
}
@Test
public void testLoadSuperclassProxyPolymorphicAccess() {
Session s = openSession();
s.beginTransaction();
Employee e = new Employee();
e.setName( "Steve" );
e.setSex( 'M' );
e.setTitle( "grand poobah" );
s.save( e );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
// load the superclass proxy.
Person pLoad = ( Person ) s.load( Person.class, new Long( e.getId() ) );
assertTrue( pLoad instanceof HibernateProxy);
Person pGet = ( Person ) s.get( Person.class, new Long( e.getId() ));
Person pQuery = ( Person ) s.createQuery( "from Person where id = :id" )
.setLong( "id", e.getId() )
.uniqueResult();
Person pCriteria = ( Person ) s.createCriteria( Person.class )
.add( Restrictions.idEq( new Long( e.getId() ) ) )
.uniqueResult();
// assert that executing the queries polymorphically returns the same proxy
assertSame( pLoad, pGet );
assertSame( pLoad, pQuery );
assertSame( pLoad, pCriteria );
// assert that the proxy is not an instance of Employee
assertFalse( pLoad instanceof Employee );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
s.delete( e );
s.getTransaction().commit();
s.close();
}
@Test
public void testLoadSuperclassProxyEvictPolymorphicAccess() {
Session s = openSession();
s.beginTransaction();
Employee e = new Employee();
e.setName( "Steve" );
e.setSex( 'M' );
e.setTitle( "grand poobah" );
s.save( e );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
// load the superclass proxy.
Person pLoad = ( Person ) s.load( Person.class, new Long( e.getId() ) );
assertTrue( pLoad instanceof HibernateProxy);
// evict the proxy
s.evict( pLoad );
Employee pGet = ( Employee ) s.get( Person.class, new Long( e.getId() ));
Employee pQuery = ( Employee ) s.createQuery( "from Person where id = :id" )
.setLong( "id", e.getId() )
.uniqueResult();
Employee pCriteria = ( Employee ) s.createCriteria( Person.class )
.add( Restrictions.idEq( new Long( e.getId() ) ) )
.uniqueResult();
// assert that executing the queries polymorphically returns the same Employee instance
assertSame( pGet, pQuery );
assertSame( pGet, pCriteria );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
s.delete( e );
s.getTransaction().commit();
s.close();
}
}