Hibernate example source code file (IdentifierPropertyReferencesTest.java)

This example Hibernate source code file (IdentifierPropertyReferencesTest.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

identifierpropertyreferencestest, integer, lineitem, lineitem, long, long, order, order, override, person, person, session, string, test

The Hibernate IdentifierPropertyReferencesTest.java source code

/*
 * 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.test.idprops;

import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;

/**
 * @author Steve Ebersole
 */
public class IdentifierPropertyReferencesTest extends BaseCoreFunctionalTestCase {
	@Override
	public String[] getMappings() {
		return new String[] { "idprops/Mapping.hbm.xml" };
	}

	@Test
	public void testHqlIdPropertyReferences() {
		Session s = openSession();
		s.beginTransaction();
		Person p = new Person( new Long(1), "steve", 123 );
		s.save( p );
		Order o = new Order( new Long(1), p );
		LineItem l = new LineItem( o, "my-product", 2 );
		l.setId( "456" );
		s.save( o );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();

		long count = extractCount( s, "select count(*) from Person p where p.id = 123" );
		assertEquals( "Person by id prop (non-identifier)", 1, count );
		count = extractCount( s, "select count(*) from Person p where p.pk = 1" );
		assertEquals( "Person by pk prop (identifier)", 1, count );

		count = extractCount( s, "select count(*) from Order o where o.id = 1" );
		assertEquals( "Order by number prop (named identifier)", 1, count );
		count = extractCount( s, "select count(*) from Order o where o.number = 1" );
		assertEquals( "Order by id prop (virtual identifier)", 1, count );

		count = extractCount( s, "select count(*) from LineItem l where l.id = '456'" );
		assertEquals( "LineItem by id prop (non-identifier", 1, count );

		if ( getDialect().supportsRowValueConstructorSyntax() ) {
			Query q = s.createQuery( "select count(*) from LineItem l where l.pk = (:order, :product)" )
					.setEntity( "order", o )
					.setString( "product", "my-product" );
			count = extractCount( q );
			assertEquals( "LineItem by pk prop (named composite identifier", 1, count );
		}

		count = extractCount( s, "select count(*) from Order o where o.orderee.id = 1" );
		assertEquals( 0, count );
		count = extractCount( s, "select count(*) from Order o where o.orderee.pk = 1" );
		assertEquals( 1, count );
		count = extractCount( s, "select count(*) from Order o where o.orderee.id = 123" );
		assertEquals( 1, count );

		count = extractCount( s, "select count(*) from LineItem l where l.pk.order.id = 1" );
		assertEquals( 1, count );
		count = extractCount( s, "select count(*) from LineItem l where l.pk.order.number = 1" );
		assertEquals( 1, count );
		count = extractCount( s, "select count(*) from LineItem l where l.pk.order.orderee.pk = 1" );
		assertEquals( 1, count );

		s.delete( o );
		s.delete( p );
		s.getTransaction().commit();
		s.close();
	}

	@Test
	public void testCriteriaIdPropertyReferences() {
		Session s = openSession();
		s.beginTransaction();
		Person p = new Person( new Long(1), "steve", 123 );
		s.save( p );
		Order o = new Order( new Long(1), p );
		LineItem l = new LineItem( o, "my-product", 2 );
		l.setId( "456" );
		s.save( o );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();

		Criteria crit = s.createCriteria( Person.class );
		crit.setProjection( Projections.rowCount() );
		crit.add( Restrictions.eq( "id", new Integer(123) ) );
		long count = extractCount( crit );
		assertEquals( "Person by id prop (non-identifier)", 1, count );

		crit = s.createCriteria( Person.class );
		crit.setProjection( Projections.rowCount() );
		crit.add( Restrictions.eq( "pk", new Long(1) ) );
		count = extractCount( crit );
		assertEquals( "Person by pk prop (identifier)", 1, count );

		crit = s.createCriteria( Order.class );
		crit.setProjection( Projections.rowCount() );
		crit.add(  Restrictions.eq( "number", new Long(1) ) );
		count = extractCount( crit );
		assertEquals( "Order by number prop (named identifier)", 1, count );

		crit = s.createCriteria( Order.class );
		crit.setProjection( Projections.rowCount() );
		crit.add(  Restrictions.eq( "id", new Long(1) ) );
		count = extractCount( crit );
		assertEquals( "Order by id prop (virtual identifier)", 1, count );

		crit = s.createCriteria( LineItem.class );
		crit.setProjection( Projections.rowCount() );
		crit.add(  Restrictions.eq( "id", "456" ) );
		count = extractCount( crit );
		assertEquals( "LineItem by id prop (non-identifier", 1, count );

		if ( getDialect().supportsRowValueConstructorSyntax() ) {
			crit = s.createCriteria( LineItem.class );
			crit.setProjection( Projections.rowCount() );
			crit.add( Restrictions.eq( "pk", new LineItemPK( o, "my-product" ) ) );
			count = extractCount( crit );
			assertEquals( "LineItem by pk prop (named composite identifier)", 1, count );
		}

		crit = s.createCriteria( Order.class );
		crit.setProjection( Projections.rowCount() );
		crit.createAlias( "orderee", "p" ).add( Restrictions.eq( "p.id", new Integer(1) ) );
		count = extractCount( crit );
		assertEquals( 0, count );

		crit = s.createCriteria( Order.class );
		crit.setProjection( Projections.rowCount() );
		crit.createAlias( "orderee", "p" ).add( Restrictions.eq( "p.pk", new Long(1) ) );
		count = extractCount( crit );
		assertEquals( 1, count );

		crit = s.createCriteria( Order.class );
		crit.setProjection( Projections.rowCount() );
		crit.createAlias( "orderee", "p" ).add( Restrictions.eq( "p.id", new Integer(123) ) );
		count = extractCount( crit );
		assertEquals( 1, count );

		crit = s.createCriteria( LineItem.class );
		crit.setProjection( Projections.rowCount() );
		crit.add( Restrictions.eq( "pk.order.id", new Long(1) ) );
		count = extractCount( crit );
		assertEquals( 1, count );

		crit = s.createCriteria( LineItem.class );
		crit.setProjection( Projections.rowCount() );
		crit.add( Restrictions.eq( "pk.order.number", new Long(1) ) );
		count = extractCount( crit );
		assertEquals( 1, count );

		s.delete( o );
		s.delete( p );
		s.getTransaction().commit();
		s.close();
	}

	private long extractCount(Session s, String hql) {
		return extractCount( s.createQuery( hql ) );
	}

	private long extractCount(Query query) {
		return ( ( Long ) query.list().get( 0 ) ).longValue();
	}

	private long extractCount(Criteria crit) {
		return ( ( Long ) crit.list().get( 0 ) ).longValue();
	}
}