Java tutorial
/* * #%L * BroadleafCommerce Common Libraries * %% * Copyright (C) 2009 - 2013 Broadleaf Commerce * %% * 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. * #L% */ package org.broadleafcommerce.common.util; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.transaction.PlatformTransactionManager; import org.springframework.transaction.TransactionDefinition; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.support.DefaultTransactionDefinition; /** * @author Jeff Fischer */ public class TransactionUtils { /** * Intended for use in all @Transactional definitions that operate against the <pre>blPU</pre> persistence unit. For instance: * <pre>@Transactional(TransactionUtils.DEFAULT_TRANSACTION_MANAGER)</pre> */ public static final String DEFAULT_TRANSACTION_MANAGER = "blTransactionManager"; /** * Intended for use in all @Transactional definitions that operate against the <pre>blSecurePU</pre> persistence unit. For instance: * <pre>@Transactional(TransactionUtils.SECURE_TRANSACTION_MANAGER)</pre> */ public static final String SECURE_TRANSACTION_MANAGER = "blTransactionManagerSecureInfo"; private static final Log LOG = LogFactory.getLog(TransactionUtils.class); public static TransactionStatus createTransaction(String name, int propagationBehavior, PlatformTransactionManager transactionManager) { return createTransaction(name, propagationBehavior, transactionManager, false); } public static TransactionStatus createTransaction(String name, int propagationBehavior, PlatformTransactionManager transactionManager, boolean isReadOnly) { return createTransaction(name, propagationBehavior, TransactionDefinition.ISOLATION_DEFAULT, transactionManager, isReadOnly); } public static TransactionStatus createTransaction(String name, int propagationBehavior, int isolationLevel, PlatformTransactionManager transactionManager, boolean isReadOnly) { DefaultTransactionDefinition def = new DefaultTransactionDefinition(); def.setName(name); def.setReadOnly(isReadOnly); def.setPropagationBehavior(propagationBehavior); def.setIsolationLevel(isolationLevel); return transactionManager.getTransaction(def); } public static TransactionStatus createTransaction(int propagationBehavior, PlatformTransactionManager transactionManager, boolean isReadOnly) { return createTransaction(propagationBehavior, TransactionDefinition.ISOLATION_DEFAULT, transactionManager, isReadOnly); } public static TransactionStatus createTransaction(int propagationBehavior, int isolationLevel, PlatformTransactionManager transactionManager, boolean isReadOnly) { DefaultTransactionDefinition def = new DefaultTransactionDefinition(); def.setReadOnly(isReadOnly); def.setPropagationBehavior(propagationBehavior); def.setIsolationLevel(isolationLevel); return transactionManager.getTransaction(def); } public static void finalizeTransaction(TransactionStatus status, PlatformTransactionManager transactionManager, boolean isError) { boolean isActive = false; try { if (!status.isRollbackOnly()) { isActive = true; } } catch (Exception e) { //do nothing } if (isError || !isActive) { try { transactionManager.rollback(status); } catch (Exception e) { LOG.error("Rolling back caused exception. Logging and continuing.", e); } } else { transactionManager.commit(status); } } }