Hibernate example source code file (RefreshTest.java)

This example Hibernate source code file (RefreshTest.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

date, iterator, jdbc, job, job, jobbatch, jobbatch, jobs, override, refreshtest, set, sql, string, string, throwable, throwable, util

The Hibernate RefreshTest.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.cascade;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Date;
import java.util.Iterator;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.jdbc.Work;

import org.junit.Test;

import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;

import static org.junit.Assert.assertEquals;

/**
 * Implementation of RefreshTest.
 *
 * @author Steve Ebersole
 */
public class RefreshTest extends BaseCoreFunctionalTestCase {
	@Override
	public String[] getMappings() {
		return new String[] { "cascade/Job.hbm.xml", "cascade/JobBatch.hbm.xml" };
	}

	@Test
	public void testRefreshCascade() throws Throwable {
		Session session = openSession();
		Transaction txn = session.beginTransaction();

		JobBatch batch = new JobBatch( new Date() );
		batch.createJob().setProcessingInstructions( "Just do it!" );
		batch.createJob().setProcessingInstructions( "I know you can do it!" );

		// write the stuff to the database; at this stage all job.status values are zero
		session.persist( batch );
		session.flush();

		// behind the session's back, let's modify the statuses
		updateStatuses( session );

		// Now lets refresh the persistent batch, and see if the refresh cascaded to the jobs collection elements
		session.refresh( batch );

		Iterator itr = batch.getJobs().iterator();
		while( itr.hasNext() ) {
			Job job = ( Job ) itr.next();
			assertEquals( "Jobs not refreshed!", 1, job.getStatus() );
		}

		txn.rollback();
		session.close();
	}

	private void updateStatuses(Session session) throws Throwable {
		session.doWork(
				new Work() {
					@Override
					public void execute(Connection connection) throws SQLException {
						PreparedStatement stmnt = null;
						try {
							stmnt = connection.prepareStatement( "UPDATE T_JOB SET JOB_STATUS = 1" );
							stmnt.executeUpdate();
						}
						finally {
							if ( stmnt != null ) {
								try {
									stmnt.close();
								}
								catch( Throwable ignore ) {
								}
							}
						}
					}
				}
		);
	}
}