Hibernate example source code file (ThreadLocalCurrentSessionTest.java)

This example Hibernate source code file (ThreadLocalCurrentSessionTest.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

connectionmanagementtestcase, hibernateexception, override, override, session, session, silly, test, test, testablethreadlocalcontext, testablethreadlocalcontext, threadlocalcurrentsessiontest, threadlocalsessioncontext, throwable

The Hibernate ThreadLocalCurrentSessionTest.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.connections;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
import org.hibernate.cfg.Environment;
import org.hibernate.context.internal.ThreadLocalSessionContext;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.transaction.spi.LocalStatus;

import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

/**
 * @author Steve Ebersole
 */
public class ThreadLocalCurrentSessionTest extends ConnectionManagementTestCase {
	@Override
	public void configure(Configuration cfg) {
		super.configure( cfg );
		cfg.setProperty( Environment.CURRENT_SESSION_CONTEXT_CLASS, TestableThreadLocalContext.class.getName() );
		cfg.setProperty( Environment.GENERATE_STATISTICS, "true" );
	}

	@Override
	protected Session getSessionUnderTest() throws Throwable {
		Session session = sessionFactory().getCurrentSession();
		session.beginTransaction();
		return session;
	}

	@Override
	protected void release(Session session) {
		if ( session.getTransaction().getLocalStatus() != LocalStatus.ACTIVE ) {
			TestableThreadLocalContext.unbind( sessionFactory() );
			return;
		}
		long initialCount = sessionFactory().getStatistics().getSessionCloseCount();
		session.getTransaction().commit();
		long subsequentCount = sessionFactory().getStatistics().getSessionCloseCount();
		assertEquals( "Session still open after commit", initialCount + 1, subsequentCount );
		// also make sure it was cleaned up from the internal ThreadLocal...
		assertFalse( "session still bound to internal ThreadLocal", TestableThreadLocalContext.hasBind() );
	}

	@Override
	protected void reconnect(Session session) throws Throwable {
	}

	@Override
	protected void checkSerializedState(Session session) {
		assertFalse( "session still bound after serialize", TestableThreadLocalContext.isSessionBound( session ) );
	}

	@Override
	protected void checkDeserializedState(Session session) {
		assertTrue( "session not bound after deserialize", TestableThreadLocalContext.isSessionBound( session ) );
	}

	@Test
	public void testTransactionProtection() {
		Session session = sessionFactory().getCurrentSession();
		try {
			session.createQuery( "from Silly" );
			fail( "method other than beginTransaction{} allowed" );
		}
		catch ( HibernateException e ) {
			// ok
		}
	}

	@Test
	public void testContextCleanup() {
		Session session = sessionFactory().getCurrentSession();
		session.beginTransaction();
		session.getTransaction().commit();
		assertFalse( "session open after txn completion", session.isOpen() );
		assertFalse( "session still bound after txn completion", TestableThreadLocalContext.isSessionBound( session ) );

		Session session2 = sessionFactory().getCurrentSession();
		assertFalse( "same session returned after txn completion", session == session2 );
		session2.close();
		assertFalse( "session open after closing", session2.isOpen() );
		assertFalse( "session still bound after closing", TestableThreadLocalContext.isSessionBound( session2 ) );
	}

	public static class TestableThreadLocalContext extends ThreadLocalSessionContext {
		private static TestableThreadLocalContext me;

		public TestableThreadLocalContext(SessionFactoryImplementor factory) {
			super( factory );
			me = this;
		}

		public static boolean isSessionBound(Session session) {
			return sessionMap() != null && sessionMap().containsKey( me.factory )
					&& sessionMap().get( me.factory ) == session;
		}

		public static boolean hasBind() {
			return sessionMap() != null && sessionMap().containsKey( me.factory );
		}
	}
}