001/* 002 * Copyright 2002-2019 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.transaction.config; 018 019import org.springframework.beans.BeanUtils; 020import org.springframework.beans.factory.FactoryBean; 021import org.springframework.beans.factory.InitializingBean; 022import org.springframework.lang.Nullable; 023import org.springframework.transaction.TransactionSystemException; 024import org.springframework.transaction.jta.JtaTransactionManager; 025import org.springframework.util.ClassUtils; 026 027/** 028 * A {@link FactoryBean} equivalent to the <tx:jta-transaction-manager/> XML element, 029 * autodetecting WebLogic and WebSphere servers and exposing the corresponding 030 * {@link org.springframework.transaction.jta.JtaTransactionManager} subclass. 031 * 032 * @author Juergen Hoeller 033 * @since 4.1.1 034 * @see org.springframework.transaction.jta.WebLogicJtaTransactionManager 035 * @see org.springframework.transaction.jta.WebSphereUowTransactionManager 036 */ 037public class JtaTransactionManagerFactoryBean implements FactoryBean<JtaTransactionManager>, InitializingBean { 038 039 private static final String WEBLOGIC_JTA_TRANSACTION_MANAGER_CLASS_NAME = 040 "org.springframework.transaction.jta.WebLogicJtaTransactionManager"; 041 042 private static final String WEBSPHERE_TRANSACTION_MANAGER_CLASS_NAME = 043 "org.springframework.transaction.jta.WebSphereUowTransactionManager"; 044 045 private static final String JTA_TRANSACTION_MANAGER_CLASS_NAME = 046 "org.springframework.transaction.jta.JtaTransactionManager"; 047 048 049 private static final boolean weblogicPresent; 050 051 private static final boolean webspherePresent; 052 053 static { 054 ClassLoader classLoader = JtaTransactionManagerFactoryBean.class.getClassLoader(); 055 weblogicPresent = ClassUtils.isPresent("weblogic.transaction.UserTransaction", classLoader); 056 webspherePresent = ClassUtils.isPresent("com.ibm.wsspi.uow.UOWManager", classLoader); 057 } 058 059 060 private final JtaTransactionManager transactionManager; 061 062 063 @SuppressWarnings("unchecked") 064 public JtaTransactionManagerFactoryBean() { 065 String className = resolveJtaTransactionManagerClassName(); 066 try { 067 Class<? extends JtaTransactionManager> clazz = (Class<? extends JtaTransactionManager>) 068 ClassUtils.forName(className, JtaTransactionManagerFactoryBean.class.getClassLoader()); 069 this.transactionManager = BeanUtils.instantiateClass(clazz); 070 } 071 catch (ClassNotFoundException ex) { 072 throw new IllegalStateException("Failed to load JtaTransactionManager class: " + className, ex); 073 } 074 } 075 076 077 @Override 078 public void afterPropertiesSet() throws TransactionSystemException { 079 this.transactionManager.afterPropertiesSet(); 080 } 081 082 @Override 083 @Nullable 084 public JtaTransactionManager getObject() { 085 return this.transactionManager; 086 } 087 088 @Override 089 public Class<?> getObjectType() { 090 return this.transactionManager.getClass(); 091 } 092 093 @Override 094 public boolean isSingleton() { 095 return true; 096 } 097 098 099 static String resolveJtaTransactionManagerClassName() { 100 if (weblogicPresent) { 101 return WEBLOGIC_JTA_TRANSACTION_MANAGER_CLASS_NAME; 102 } 103 else if (webspherePresent) { 104 return WEBSPHERE_TRANSACTION_MANAGER_CLASS_NAME; 105 } 106 else { 107 return JTA_TRANSACTION_MANAGER_CLASS_NAME; 108 } 109 } 110 111}