001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.orm.hibernate3;
018
019import javax.sql.DataSource;
020
021import org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy;
022
023/**
024 * Subclass of LocalDataSourceConnectionProvider that returns a
025 * transaction-aware proxy for the exposed DataSource. Used if
026 * LocalSessionFactoryBean's "useTransactionAwareDataSource" flag is on.
027 *
028 * @author Juergen Hoeller
029 * @since 1.2
030 * @see LocalSessionFactoryBean#setUseTransactionAwareDataSource
031 * @deprecated as of Spring 4.3, in favor of Hibernate 4.x/5.x
032 */
033@Deprecated
034public class TransactionAwareDataSourceConnectionProvider extends LocalDataSourceConnectionProvider {
035
036        /**
037         * Return a TransactionAwareDataSourceProxy for the given DataSource,
038         * provided that it isn't a TransactionAwareDataSourceProxy already.
039         */
040        @Override
041        protected DataSource getDataSourceToUse(DataSource originalDataSource) {
042                if (originalDataSource instanceof TransactionAwareDataSourceProxy) {
043                        return originalDataSource;
044                }
045                return new TransactionAwareDataSourceProxy(originalDataSource);
046        }
047
048        /**
049         * This implementation returns {@code true}: We can guarantee
050         * to receive the same Connection within a transaction, as we are
051         * exposing a TransactionAwareDataSourceProxy.
052         */
053        @Override
054        public boolean supportsAggressiveRelease() {
055                return true;
056        }
057
058}