001/*
002 * Copyright 2012-2017 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 *      http://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.boot.autoconfigure.jdbc;
018
019import javax.sql.DataSource;
020
021import org.springframework.beans.factory.ObjectProvider;
022import org.springframework.boot.autoconfigure.AutoConfigureOrder;
023import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
024import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
025import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
026import org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate;
027import org.springframework.boot.autoconfigure.transaction.TransactionManagerCustomizers;
028import org.springframework.boot.context.properties.EnableConfigurationProperties;
029import org.springframework.context.annotation.Bean;
030import org.springframework.context.annotation.Configuration;
031import org.springframework.core.Ordered;
032import org.springframework.jdbc.core.JdbcTemplate;
033import org.springframework.jdbc.datasource.DataSourceTransactionManager;
034import org.springframework.transaction.PlatformTransactionManager;
035
036/**
037 * {@link EnableAutoConfiguration Auto-configuration} for
038 * {@link DataSourceTransactionManager}.
039 *
040 * @author Dave Syer
041 * @author Stephane Nicoll
042 * @author Andy Wilkinson
043 * @author Kazuki Shimizu
044 */
045@Configuration
046@ConditionalOnClass({ JdbcTemplate.class, PlatformTransactionManager.class })
047@AutoConfigureOrder(Ordered.LOWEST_PRECEDENCE)
048@EnableConfigurationProperties(DataSourceProperties.class)
049public class DataSourceTransactionManagerAutoConfiguration {
050
051        @Configuration
052        @ConditionalOnSingleCandidate(DataSource.class)
053        static class DataSourceTransactionManagerConfiguration {
054
055                private final DataSource dataSource;
056
057                private final TransactionManagerCustomizers transactionManagerCustomizers;
058
059                DataSourceTransactionManagerConfiguration(DataSource dataSource,
060                                ObjectProvider<TransactionManagerCustomizers> transactionManagerCustomizers) {
061                        this.dataSource = dataSource;
062                        this.transactionManagerCustomizers = transactionManagerCustomizers
063                                        .getIfAvailable();
064                }
065
066                @Bean
067                @ConditionalOnMissingBean(PlatformTransactionManager.class)
068                public DataSourceTransactionManager transactionManager(
069                                DataSourceProperties properties) {
070                        DataSourceTransactionManager transactionManager = new DataSourceTransactionManager(
071                                        this.dataSource);
072                        if (this.transactionManagerCustomizers != null) {
073                                this.transactionManagerCustomizers.customize(transactionManager);
074                        }
075                        return transactionManager;
076                }
077
078        }
079
080}