org.hibernate.context.internal.JTASessionContext Maven / Gradle / Ivy
/*
* 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.context.internal;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.transaction.Synchronization;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.jboss.logging.Logger;
import org.hibernate.ConnectionReleaseMode;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.context.spi.AbstractCurrentSessionContext;
import org.hibernate.context.spi.CurrentSessionContext;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.transaction.internal.jta.JtaStatusHelper;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.service.jta.platform.spi.JtaPlatform;
/**
* An implementation of {@link CurrentSessionContext} which scopes the notion
* of a current session to a JTA transaction. Because JTA gives us a nice
* tie-in to clean up after ourselves, this implementation will generate
* Sessions as needed provided a JTA transaction is in effect. If a session
* is not already associated with the current JTA transaction at the time
* {@link #currentSession()} is called, a new session will be opened and it
* will be associated with that JTA transaction.
*
* Note that the sessions returned from this method are automatically configured with
* both the {@link org.hibernate.cfg.Environment#FLUSH_BEFORE_COMPLETION auto-flush} and
* {@link org.hibernate.cfg.Environment#AUTO_CLOSE_SESSION auto-close} attributes set to
* true, meaning that the Session will be automatically flushed and closed
* as part of the lifecycle for the JTA transaction to which it is associated.
* Additionally, it will also be configured to aggressively release JDBC
* connections after each statement is executed. These settings are governed
* by the {@link #isAutoFlushEnabled()}, {@link #isAutoCloseEnabled()}, and
* {@link #getConnectionReleaseMode()} methods; these are provided (along with
* the {@link #buildOrObtainSession()} method) for easier subclassing for custom
* JTA-based session tracking logic (like maybe long-session semantics).
*
* @author Steve Ebersole
*/
public class JTASessionContext extends AbstractCurrentSessionContext {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, JTASessionContext.class.getName());
private transient Map