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Spring Object/Relational Mapping
/*
* Copyright 2002-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.orm.hibernate3;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.hibernate.FlushMode;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.springframework.transaction.support.ResourceHolderSupport;
import org.springframework.util.Assert;
/**
* Session holder, wrapping a Hibernate Session and a Hibernate Transaction.
* HibernateTransactionManager binds instances of this class to the thread,
* for a given SessionFactory.
*
* Note: This is an SPI class, not intended to be used by applications.
*
* @author Juergen Hoeller
* @since 1.2
* @see HibernateTransactionManager
* @see SessionFactoryUtils
*/
public class SessionHolder extends ResourceHolderSupport {
private static final Object DEFAULT_KEY = new Object();
/**
* This Map needs to be concurrent because there might be multi-threaded
* access in the case of JTA with remote transaction propagation.
*/
private final Map