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.logicblaze.lingo.jms; 019 020 import org.apache.commons.logging.Log; 021 import org.apache.commons.logging.LogFactory; 022 import org.springframework.beans.factory.InitializingBean; 023 import org.springframework.jms.core.JmsTemplate; 024 import org.springframework.jms.core.MessageCreator; 025 import org.springframework.remoting.support.RemoteInvocationResult; 026 027 import javax.jms.JMSException; 028 import javax.jms.Message; 029 import javax.jms.Session; 030 031 /** 032 * A JMS MessageListener that exports the specified service bean as a JMS service 033 * endpoint, accessible via a JMS proxy. 034 * <p/> 035 * <p>Note: JMS services exported with this class can be accessed by 036 * any JMS client, as there isn't any special handling involved. 037 * 038 * @author James Strachan 039 * @see JmsProxyFactoryBean 040 */ 041 public class JmsTemplateServiceExporter extends JmsServiceExporterSupport implements InitializingBean { 042 private static final Log log = LogFactory.getLog(JmsTemplateServiceExporter.class); 043 044 private JmsTemplate template; 045 046 public void afterPropertiesSet() throws Exception { 047 super.afterPropertiesSet(); 048 if (template == null) { 049 throw new IllegalArgumentException("template is required"); 050 } 051 } 052 053 public JmsTemplate getTemplate() { 054 return template; 055 } 056 057 /** 058 * Sets the JMS template used to send replies back for the request 059 * 060 * @param template the JMS template to use 061 */ 062 public void setTemplate(JmsTemplate template) { 063 this.template = template; 064 } 065 066 067 /** 068 * Send the given RemoteInvocationResult as a JMS message to the originator 069 * 070 * @param message current HTTP message 071 * @param result the RemoteInvocationResult object 072 * @throws javax.jms.JMSException if thrown by trying to send the message 073 */ 074 protected void writeRemoteInvocationResult(final Message message, final RemoteInvocationResult result) throws JMSException { 075 template.send(message.getJMSReplyTo(), new MessageCreator() { 076 public Message createMessage(Session session) throws JMSException { 077 return createResponseMessage(session, message, result); 078 } 079 }); 080 } 081 082 }