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Hibernate example source code file (PersistentMapTest.java)

This example Hibernate source code file (PersistentMapTest.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

child, child, hashmap, object, override, parent, parent, persistentmap, persistentmaptest, session, session, string, test, test, util

The Hibernate PersistentMapTest.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.collection.map;
import java.util.HashMap;

import org.hibernate.Session;
import org.hibernate.collection.internal.PersistentMap;

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.assertTrue;

/**
 * Test various situations using a {@link PersistentMap}.
 *
 * @author Steve Ebersole
 */
public class PersistentMapTest extends BaseCoreFunctionalTestCase {
	@Override
	public String[] getMappings() {
		return new String[] { "collection/map/Mappings.hbm.xml" };
	}

	@Test
	@SuppressWarnings({ "unchecked" })
	public void testWriteMethodDirtying() {
		Parent parent = new Parent( "p1" );
		Child child = new Child( "c1" );
		parent.getChildren().put( child.getName(), child );
		child.setParent( parent );
		Child otherChild = new Child( "c2" );

		Session session = openSession();
		session.beginTransaction();
		session.save( parent );
		session.flush();
		// at this point, the map on parent has now been replaced with a PersistentMap...
		PersistentMap children = ( PersistentMap ) parent.getChildren();

		Object old = children.put( child.getName(), child );
		assertTrue( old == child );
		assertFalse( children.isDirty() );

		old = children.remove( otherChild.getName() );
		assertNull( old );
		assertFalse( children.isDirty() );

		HashMap otherMap = new HashMap();
		otherMap.put( child.getName(), child );
		children.putAll( otherMap );
		assertFalse( children.isDirty() );

		otherMap = new HashMap();
		otherMap.put( otherChild.getName(), otherChild );
		children.putAll( otherMap );
		assertTrue( children.isDirty() );

		children.clearDirty();
		session.delete( child );
		children.clear();
		assertTrue( children.isDirty() );
		session.flush();

		children.clear();
		assertFalse( children.isDirty() );

		session.delete( parent );
		session.getTransaction().commit();
		session.close();
	}

	@Test
	public void testPutAgainstUninitializedMap() {
		// prepare map owner...
		Session session = openSession();
		session.beginTransaction();
		Parent parent = new Parent( "p1" );
		session.save( parent );
		session.getTransaction().commit();
		session.close();

		// Now, reload the parent and test adding children
		session = openSession();
		session.beginTransaction();
		parent = ( Parent ) session.get( Parent.class, parent.getName() );
		parent.addChild( "c1" );
		parent.addChild( "c2" );
		session.getTransaction().commit();
		session.close();

		assertEquals( 2, parent.getChildren().size() );

		session = openSession();
		session.beginTransaction();
		session.delete( parent );
		session.getTransaction().commit();
		session.close();
	}

	@Test
    public void testRemoveAgainstUninitializedMap() {
        Parent parent = new Parent( "p1" );
        Child child = new Child( "c1" );
        parent.addChild( child );

        Session session = openSession();
        session.beginTransaction();
        session.save( parent );
        session.getTransaction().commit();
        session.close();

        // Now reload the parent and test removing the child
        session = openSession();
        session.beginTransaction();
        parent = ( Parent ) session.get( Parent.class, parent.getName() );
        Child child2 = ( Child ) parent.getChildren().remove( child.getName() );
		child2.setParent( null );
		assertNotNull( child2 );
		assertTrue( parent.getChildren().isEmpty() );
        session.getTransaction().commit();
        session.close();

		// Load the parent once again and make sure child is still gone
		//		then cleanup
        session = openSession();
        session.beginTransaction();
		parent = ( Parent ) session.get( Parent.class, parent.getName() );
		assertTrue( parent.getChildren().isEmpty() );
		session.delete( child2 );
		session.delete( parent );
        session.getTransaction().commit();
        session.close();
    }
}

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