001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. 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 */ 017package org.apache.activemq.web; 018 019import java.util.Enumeration; 020import java.util.HashMap; 021import java.util.Map; 022import javax.jms.BytesMessage; 023import javax.jms.JMSException; 024import javax.jms.MapMessage; 025import javax.jms.Message; 026import javax.jms.ObjectMessage; 027import javax.jms.QueueBrowser; 028import javax.jms.StreamMessage; 029import javax.jms.TextMessage; 030 031/** 032 * Allow the user to browse a message on a queue by its ID 033 * 034 * 035 */ 036public class MessageQuery extends QueueBrowseQuery { 037 038 private String id; 039 private Message message; 040 041 public MessageQuery(BrokerFacade brokerFacade, SessionPool sessionPool) throws JMSException { 042 super(brokerFacade, sessionPool); 043 } 044 045 public String getId() { 046 return id; 047 } 048 049 public void setId(String id) { 050 this.id = id; 051 } 052 053 public void setMessage(Message message) { 054 this.message = message; 055 } 056 057 public Message getMessage() throws JMSException { 058 if (message == null) { 059 if (id != null) { 060 QueueBrowser tempBrowser=getBrowser(); 061 Enumeration iter = tempBrowser.getEnumeration(); 062 while (iter.hasMoreElements()) { 063 Message item = (Message) iter.nextElement(); 064 if (id.equals(item.getJMSMessageID())) { 065 message = item; 066 break; 067 } 068 } 069 tempBrowser.close(); 070 } 071 072 } 073 return message; 074 } 075 076 public Object getBody() throws JMSException { 077 Message message = getMessage(); 078 if (message instanceof TextMessage) { 079 return ((TextMessage) message).getText(); 080 } 081 if (message instanceof ObjectMessage) { 082 try { 083 return ((ObjectMessage) message).getObject(); 084 } catch (Exception e) { 085 //message could not be parsed, make the reason available 086 return new String("Cannot display ObjectMessage body. Reason: " + e.getMessage()); 087 } 088 } 089 if (message instanceof MapMessage) { 090 return createMapBody((MapMessage) message); 091 } 092 if (message instanceof BytesMessage) { 093 BytesMessage msg = (BytesMessage) message; 094 int len = (int) msg.getBodyLength(); 095 if (len > -1) { 096 byte[] data = new byte[len]; 097 msg.readBytes(data); 098 return new String(data); 099 } else { 100 return ""; 101 } 102 } 103 if (message instanceof StreamMessage) { 104 return "StreamMessage is not viewable"; 105 } 106 107 // unknown message type 108 if (message != null) { 109 return "Unknown message type [" + message.getClass().getName() + "] " + message; 110 } 111 112 return null; 113 } 114 115 public Map<String, Object> getPropertiesMap() throws JMSException { 116 Map<String, Object> answer = new HashMap<String, Object>(); 117 Message aMessage = getMessage(); 118 Enumeration iter = aMessage.getPropertyNames(); 119 while (iter.hasMoreElements()) { 120 String name = (String) iter.nextElement(); 121 Object value = aMessage.getObjectProperty(name); 122 if (value != null) { 123 answer.put(name, value); 124 } 125 } 126 return answer; 127 } 128 129 protected Map<String, Object> createMapBody(MapMessage mapMessage) throws JMSException { 130 Map<String, Object> answer = new HashMap<String, Object>(); 131 Enumeration iter = mapMessage.getMapNames(); 132 while (iter.hasMoreElements()) { 133 String name = (String) iter.nextElement(); 134 Object value = mapMessage.getObject(name); 135 if (value != null) { 136 answer.put(name, value); 137 } 138 } 139 return answer; 140 } 141}