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 org.springframework.beans.BeansException; 021 import org.springframework.beans.factory.BeanFactory; 022 import org.springframework.beans.factory.BeanFactoryAware; 023 import org.springframework.beans.factory.InitializingBean; 024 025 import javax.jms.MessageListener; 026 import javax.resource.spi.UnavailableException; 027 import javax.resource.spi.LocalTransaction; 028 import javax.transaction.TransactionManager; 029 import javax.transaction.xa.XAResource; 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: 1.2 $ 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) { 057 this.beanFactory = beanFactory; 058 this.ref = ref; 059 this.transactionManager = transactionManager; 060 } 061 062 public void afterPropertiesSet() throws Exception { 063 if (ref == null) { 064 throw new IllegalArgumentException("ref property must be set"); 065 } 066 } 067 068 // Properties 069 //------------------------------------------------------------------------- 070 public String getRef() { 071 return ref; 072 } 073 074 public void setRef(String ref) { 075 this.ref = ref; 076 } 077 078 public BeanFactory getBeanFactory() { 079 return beanFactory; 080 } 081 082 public void setBeanFactory(BeanFactory beanFactory) throws BeansException { 083 this.beanFactory = beanFactory; 084 } 085 086 // Implementation methods 087 //------------------------------------------------------------------------- 088 protected MessageListener createMessageListener() throws UnavailableException { 089 MessageListener messageListener = (MessageListener) beanFactory.getBean(ref, MessageListener.class); 090 if (messageListener == null) { 091 throw new UnavailableException("No MessageListener bean available for reference name: " + ref); 092 } 093 return messageListener; 094 } 095 }