org.hibernate.context.internal.ManagedSessionContext 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.HashMap;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.context.spi.AbstractCurrentSessionContext;
import org.hibernate.engine.spi.SessionFactoryImplementor;
/**
* Represents a {@link org.hibernate.context.spi.CurrentSessionContext} the notion of a contextual session
* is managed by some external entity (generally some form of interceptor, etc).
* This external manager is responsible for scoping these contextual sessions
* appropriately binding/unbinding them here for exposure to the application
* through {@link SessionFactory#getCurrentSession} calls.
*
* Basically exposes two interfaces.
* - First is the implementation of CurrentSessionContext which is then used
* by the {@link SessionFactory#getCurrentSession()} calls. This
* portion is instance-based specific to the session factory owning the given
* instance of this impl (there will be one instance of this per each session
* factory using this strategy).
*
- Second is the externally facing methods {@link #hasBind}, {@link #bind},
* and {@link #unbind} used by the external thing to manage exposure of the
* current session it is scoping. This portion is static to allow easy
* reference from that external thing.
*
* The underlying storage of the current sessions here is a static
* {@link ThreadLocal}-based map where the sessions are keyed by the
* the owning session factory.
*
* @author Steve Ebersole
*/
public class ManagedSessionContext extends AbstractCurrentSessionContext {
private static final ThreadLocal