001 /** 002 * 003 * Copyright 2005 LogicBlaze, Inc. 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 * 017 **/ 018 package org.jencks; 019 020 import javax.jms.MessageListener; 021 import javax.resource.spi.LocalTransaction; 022 import javax.resource.spi.UnavailableException; 023 import javax.transaction.TransactionManager; 024 import javax.transaction.xa.XAResource; 025 026 import org.springframework.beans.BeansException; 027 import org.springframework.beans.factory.BeanFactory; 028 import org.springframework.beans.factory.BeanFactoryAware; 029 import org.springframework.beans.factory.InitializingBean; 030 031 /** 032 * A factory of {@link javax.resource.spi.endpoint.MessageEndpoint} instances, either using XA transactions, 033 * Local (JMS) transactions or regular JMS message acknowledgements. 034 * <p/> 035 * To use XA you must set the transactionManager property via the 036 * {@link #setTransactionManager(javax.transaction.TransactionManager)} 037 * method. 038 * <p/> 039 * To use a local JMS transaction, then the XAResouce object passed in the {@link #createEndpoint(XAResource)} 040 * call must implement {@link LocalTransaction}. 041 * 042 * @version $Revision: 1.5 $ 043 */ 044 public class DefaultEndpointFactory extends EndpointFactorySupport implements InitializingBean, BeanFactoryAware { 045 private BeanFactory beanFactory; 046 private String ref; 047 048 public DefaultEndpointFactory() { 049 } 050 051 public DefaultEndpointFactory(BeanFactory beanFactory, String ref) { 052 this.beanFactory = beanFactory; 053 this.ref = ref; 054 } 055 056 public DefaultEndpointFactory(BeanFactory beanFactory, String ref, TransactionManager transactionManager, String name) { 057 this.beanFactory = beanFactory; 058 this.ref = ref; 059 this.transactionManager = transactionManager; 060 setName(name); 061 } 062 063 public void afterPropertiesSet() throws Exception { 064 if (ref == null) { 065 throw new IllegalArgumentException("ref property must be set"); 066 } 067 } 068 069 // Properties 070 //------------------------------------------------------------------------- 071 public String getRef() { 072 return ref; 073 } 074 075 public void setRef(String ref) { 076 this.ref = ref; 077 } 078 079 public BeanFactory getBeanFactory() { 080 return beanFactory; 081 } 082 083 public void setBeanFactory(BeanFactory beanFactory) throws BeansException { 084 this.beanFactory = beanFactory; 085 } 086 087 // Implementation methods 088 //------------------------------------------------------------------------- 089 protected MessageListener createMessageListener() throws UnavailableException { 090 MessageListener messageListener = (MessageListener) beanFactory.getBean(ref, MessageListener.class); 091 if (messageListener == null) { 092 throw new UnavailableException("No MessageListener bean available for reference name: " + ref); 093 } 094 return messageListener; 095 } 096 }