Hibernate example source code file (LongByteArrayTest.java)

This example Hibernate source code file (LongByteArrayTest.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

array_size, array_size, assertionfailederror, basecorefunctionaltestcase, longbytearrayholder, longbytearrayholder, longbytearraytest, session, session, test, test

The Hibernate LongByteArrayTest.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, 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.lob;

import org.hibernate.Session;
import org.hibernate.internal.util.collections.ArrayHelper;

import junit.framework.AssertionFailedError;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertNull;
import org.junit.Assert;
import org.junit.Test;

/**
 * Tests eager materialization and mutation of long byte arrays.
 *
 * @author Steve Ebersole
 */
public abstract class LongByteArrayTest extends BaseCoreFunctionalTestCase {
	private static final int ARRAY_SIZE = 10000;

	@Test
	public void testBoundedLongByteArrayAccess() {
		byte[] original = buildRecursively( ARRAY_SIZE, true );
		byte[] changed = buildRecursively( ARRAY_SIZE, false );
		byte[] empty = new byte[] {};

		Session s = openSession();
		s.beginTransaction();
		LongByteArrayHolder entity = new LongByteArrayHolder();
		s.save( entity );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		entity = ( LongByteArrayHolder ) s.get( LongByteArrayHolder.class, entity.getId() );
		assertNull( entity.getLongByteArray() );
		entity.setLongByteArray( original );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		entity = ( LongByteArrayHolder ) s.get( LongByteArrayHolder.class, entity.getId() );
		Assert.assertEquals( ARRAY_SIZE, entity.getLongByteArray().length );
		assertEquals( original, entity.getLongByteArray() );
		entity.setLongByteArray( changed );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		entity = ( LongByteArrayHolder ) s.get( LongByteArrayHolder.class, entity.getId() );
		Assert.assertEquals( ARRAY_SIZE, entity.getLongByteArray().length );
		assertEquals( changed, entity.getLongByteArray() );
		entity.setLongByteArray( null );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		entity = ( LongByteArrayHolder ) s.get( LongByteArrayHolder.class, entity.getId() );
		assertNull( entity.getLongByteArray() );
		entity.setLongByteArray( empty );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		entity = ( LongByteArrayHolder ) s.get( LongByteArrayHolder.class, entity.getId() );
		if ( entity.getLongByteArray() != null ) {
			Assert.assertEquals( empty.length, entity.getLongByteArray().length );
			assertEquals( empty, entity.getLongByteArray() );
		}
		s.delete( entity );
		s.getTransaction().commit();
		s.close();
	}

	@Test
	public void testSaving() {
		byte[] value = buildRecursively( ARRAY_SIZE, true );

		Session s = openSession();
		s.beginTransaction();
		LongByteArrayHolder entity = new LongByteArrayHolder();
		entity.setLongByteArray( value );
		s.persist( entity );
		s.getTransaction().commit();
		s.close();

		s = openSession();
		s.beginTransaction();
		entity = ( LongByteArrayHolder ) s.get( LongByteArrayHolder.class, entity.getId() );
		Assert.assertEquals( ARRAY_SIZE, entity.getLongByteArray().length );
		assertEquals( value, entity.getLongByteArray() );
		s.delete( entity );
		s.getTransaction().commit();
		s.close();
	}

	private byte[] buildRecursively(int size, boolean on) {
		byte[] data = new byte[size];
		data[0] = mask( on );
		for ( int i = 0; i < size; i++ ) {
			data[i] = mask( on );
			on = !on;
		}
		return data;
	}

	private byte mask(boolean on) {
		return on ? ( byte ) 1 : ( byte ) 0;
	}

	public static void assertEquals(byte[] val1, byte[] val2) {
		if ( !ArrayHelper.isEquals( val1, val2 ) ) {
			throw new AssertionFailedError( "byte arrays did not match" );
		}
	}
}