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Hibernate example source code file (JoinedSubclassFilterTest.java)

This example Hibernate source code file (JoinedSubclassFilterTest.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

arraylist, customer, doe, employee, employee, incorrect, incorrect, jboss, john, person, person, ups, us, us, util

The Hibernate JoinedSubclassFilterTest.java source code

/*
 * 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.subclassfilter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;

import org.hibernate.Session;
import org.hibernate.Transaction;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;

/**
 * @author Steve Ebersole
 */
public class JoinedSubclassFilterTest extends BaseCoreFunctionalTestCase {
	public final String[] getMappings() {
		return new String[] { "subclassfilter/joined-subclass.hbm.xml" };
	}

	@Test
	@SuppressWarnings( {"unchecked"})
	public void testFiltersWithJoinedSubclass() {
		Session s = openSession();
		s.enableFilter( "region" ).setParameter( "userRegion", "US" );
		Transaction t = s.beginTransaction();

		prepareTestData( s );
		s.clear();

		List results = s.createQuery( "from Person" ).list();
		assertEquals( "Incorrect qry result count", 4, results.size() );
		s.clear();

		results = s.createQuery( "from Employee" ).list();
		assertEquals( "Incorrect qry result count", 2, results.size() );
		Iterator itr = results.iterator();
		while ( itr.hasNext() ) {
			// find john
			final Person p = ( Person ) itr.next();
			if ( p.getName().equals( "John Doe" ) ) {
				Employee john = ( Employee ) p;
				assertEquals( "Incorrect fecthed minions count", 2, john.getMinions().size() );
				break;
			}
		}
		s.clear();

		// TODO : currently impossible to define a collection-level filter w/ joined-subclass elements that will filter based on a superclass column and function correctly in (theta only?) outer joins;
		// this is consistent with the behaviour of a collection-level where.
		// this might be one argument for "pulling" the attached class-level filters into collection assocations,
		// although we'd need some way to apply the appropriate alias in that scenario.
		results = new ArrayList( new HashSet( s.createQuery( "from Person as p left join fetch p.minions" ).list() ) );
		assertEquals( "Incorrect qry result count", 4, results.size() );
		itr = results.iterator();
		while ( itr.hasNext() ) {
			// find john
			final Person p = ( Person ) itr.next();
			if ( p.getName().equals( "John Doe" ) ) {
				Employee john = ( Employee ) p;
				assertEquals( "Incorrect fecthed minions count", 2, john.getMinions().size() );
				break;
			}
		}
		s.clear();

		results = new ArrayList( new HashSet( s.createQuery( "from Employee as p left join fetch p.minions" ).list() ) );
		assertEquals( "Incorrect qry result count", 2, results.size() );
		itr = results.iterator();
		while ( itr.hasNext() ) {
			// find john
			final Person p = ( Person ) itr.next();
			if ( p.getName().equals( "John Doe" ) ) {
				Employee john = ( Employee ) p;
				assertEquals( "Incorrect fecthed minions count", 2, john.getMinions().size() );
				break;
			}
		}

		t.commit();
		s.close();

		s = openSession();
		t = s.beginTransaction();
		s.createQuery( "delete Customer where contactOwner is not null" ).executeUpdate();
		s.createQuery( "delete Employee where manager is not null" ).executeUpdate();
		s.createQuery( "delete Person" ).executeUpdate();
		t.commit();
		s.close();
	}

	@SuppressWarnings( {"unchecked"})
	private void prepareTestData(Session s) {
		Employee john = new Employee("John Doe");
		john.setCompany( "JBoss" );
		john.setDepartment( "hr" );
		john.setTitle( "hr guru" );
		john.setRegion( "US" );

		Employee polli = new Employee("Polli Wog");
		polli.setCompany( "JBoss" );
		polli.setDepartment( "hr" );
		polli.setTitle( "hr novice" );
		polli.setRegion( "US" );
		polli.setManager( john );
		john.getMinions().add( polli );

		Employee suzie = new Employee( "Suzie Q" );
		suzie.setCompany( "JBoss" );
		suzie.setDepartment( "hr" );
		suzie.setTitle( "hr novice" );
		suzie.setRegion( "EMEA" );
		suzie.setManager( john );
		john.getMinions().add( suzie );

		Customer cust = new Customer( "John Q Public" );
		cust.setCompany( "Acme" );
		cust.setRegion( "US" );
		cust.setContactOwner( john );

		Person ups = new Person( "UPS guy" );
		ups.setCompany( "UPS" );
		ups.setRegion( "US" );

		s.save( john );
		s.save( cust );
		s.save( ups );

		s.flush();
	}

}

Other Hibernate examples (source code examples)

Here is a short list of links related to this Hibernate JoinedSubclassFilterTest.java source code file:

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