~~~ /** * Copyright 2009-2019 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.apache.ibatis.session.defaults; import java.sql.Connection; import java.sql.SQLException; import org.apache.ibatis.exceptions.ExceptionFactory; import org.apache.ibatis.executor.ErrorContext; import org.apache.ibatis.executor.Executor; import org.apache.ibatis.mapping.Environment; import org.apache.ibatis.session.Configuration; import org.apache.ibatis.session.ExecutorType; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.TransactionIsolationLevel; import org.apache.ibatis.transaction.Transaction; import org.apache.ibatis.transaction.TransactionFactory; import org.apache.ibatis.transaction.managed.ManagedTransactionFactory; /** * @author Clinton Begin */ public class DefaultSqlSessionFactory implements SqlSessionFactory { private final Configuration configuration; public DefaultSqlSessionFactory(Configuration configuration) { this.configuration = configuration; } @Override public SqlSession openSession() { return openSessionFromDataSource(configuration.getDefaultExecutorType(), null, false); } @Override public SqlSession openSession(boolean autoCommit) { return openSessionFromDataSource(configuration.getDefaultExecutorType(), null, autoCommit); } @Override public SqlSession openSession(ExecutorType execType) { return openSessionFromDataSource(execType, null, false); } @Override public SqlSession openSession(TransactionIsolationLevel level) { return openSessionFromDataSource(configuration.getDefaultExecutorType(), level, false); } @Override public SqlSession openSession(ExecutorType execType, TransactionIsolationLevel level) { return openSessionFromDataSource(execType, level, false); } @Override public SqlSession openSession(ExecutorType execType, boolean autoCommit) { return openSessionFromDataSource(execType, null, autoCommit); } @Override public SqlSession openSession(Connection connection) { return openSessionFromConnection(configuration.getDefaultExecutorType(), connection); } @Override public SqlSession openSession(ExecutorType execType, Connection connection) { return openSessionFromConnection(execType, connection); } @Override public Configuration getConfiguration() { return configuration; } private SqlSession openSessionFromDataSource(ExecutorType execType, TransactionIsolationLevel level, boolean autoCommit) { Transaction tx = null; try { final Environment environment = configuration.getEnvironment(); final TransactionFactory transactionFactory = getTransactionFactoryFromEnvironment(environment); tx = transactionFactory.newTransaction(environment.getDataSource(), level, autoCommit); final Executor executor = configuration.newExecutor(tx, execType); return new DefaultSqlSession(configuration, executor, autoCommit); } catch (Exception e) { closeTransaction(tx); // may have fetched a connection so lets call close() throw ExceptionFactory.wrapException("Error opening session. Cause: " + e, e); } finally { ErrorContext.instance().reset(); } } private SqlSession openSessionFromConnection(ExecutorType execType, Connection connection) { try { boolean autoCommit; try { autoCommit = connection.getAutoCommit(); } catch (SQLException e) { // Failover to true, as most poor drivers // or databases won't support transactions autoCommit = true; } final Environment environment = configuration.getEnvironment(); final TransactionFactory transactionFactory = getTransactionFactoryFromEnvironment(environment); final Transaction tx = transactionFactory.newTransaction(connection); final Executor executor = configuration.newExecutor(tx, execType); return new DefaultSqlSession(configuration, executor, autoCommit); } catch (Exception e) { throw ExceptionFactory.wrapException("Error opening session. Cause: " + e, e); } finally { ErrorContext.instance().reset(); } } private TransactionFactory getTransactionFactoryFromEnvironment(Environment environment) { if (environment == null || environment.getTransactionFactory() == null) { return new ManagedTransactionFactory(); } return environment.getTransactionFactory(); } private void closeTransaction(Transaction tx) { if (tx != null) { try { tx.close(); } catch (SQLException ignore) { // Intentionally ignore. Prefer previous error. } } } } ~~~