1 /***
2 * Redistribution and use of this software and associated documentation
3 * ("Software"), with or without modification, are permitted provided
4 * that the following conditions are met:
5 *
6 * 1. Redistributions of source code must retain copyright
7 * statements and notices. Redistributions must also contain a
8 * copy of this document.
9 *
10 * 2. Redistributions in binary form must reproduce the
11 * above copyright notice, this list of conditions and the
12 * following disclaimer in the documentation and/or other
13 * materials provided with the distribution.
14 *
15 * 3. The name "Exolab" must not be used to endorse or promote
16 * products derived from this Software without prior written
17 * permission of Exoffice Technologies. For written permission,
18 * please contact tma@netspace.net.au.
19 *
20 * 4. Products derived from this Software may not be called "Exolab"
21 * nor may "Exolab" appear in their names without prior written
22 * permission of Exoffice Technologies. Exolab is a registered
23 * trademark of Exoffice Technologies.
24 *
25 * 5. Due credit should be given to the Exolab Project
26 * (http://www.exolab.org/).
27 *
28 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39 * OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Copyright 2001-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: MessagePropertyComparer.java,v 1.3 2004/01/31 13:44:24 tanderson Exp $
44 */
45 package org.exolab.jmscts.core;
46
47 import java.util.Enumeration;
48 import java.util.HashMap;
49
50 import javax.jms.Message;
51
52
53 /***
54 * A helper class for comparing the properties of two messages.
55 *
56 * @version $Revision: 1.3 $ $Date: 2004/01/31 13:44:24 $
57 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
58 */
59 public class MessagePropertyComparer implements MessageComparer {
60
61 /***
62 * If true, indicates that messages may contain provider specific
63 * properties.
64 * Note that this does not include JMSXGroupID or JMSXGroupSeq properties,
65 * which may only be set by the client
66 */
67 private final boolean _provider;
68
69 /***
70 * Construct a new instance
71 *
72 * @param provider if true, either message may contain provider properties
73 * i.e those prefixed with JMSX or JMS_. These will be ignored.
74 * <br>
75 * Note that this does not include JMSXGroupID or JMSXGroupSeq properties,
76 * which may only be set by the client
77 */
78 public MessagePropertyComparer(boolean provider) {
79 _provider = provider;
80 }
81
82 /***
83 * Compare two message's properties
84 *
85 * @param message1 one message to be tested for equality
86 * @param message2 the other message to be tested for equality
87 * @return <code>true</code> if message1 and message2 are equal
88 * @throws Exception for any error
89 */
90 public boolean compare(Message message1, Message message2)
91 throws Exception {
92 int count1 = 0; // maintains a count of the elements in each message
93 int count2 = 0; // in the unlikely event than a provider allows
94 // duplicate map names
95 HashMap map1 = new HashMap();
96 HashMap map2 = new HashMap();
97 Enumeration iter1 = message1.getPropertyNames();
98 Enumeration iter2 = message2.getPropertyNames();
99 while (iter1.hasMoreElements()) {
100 String name = (String) iter1.nextElement();
101 if (!ignore(name)) {
102 map1.put(name, message1.getObjectProperty(name));
103 ++count1;
104 }
105 }
106 while (iter2.hasMoreElements()) {
107 String name = (String) iter2.nextElement();
108 if (!ignore(name)) {
109 map2.put(name, message2.getObjectProperty(name));
110 ++count2;
111 }
112 }
113 return (count1 == count2) ? map1.equals(map2) : false;
114 }
115
116 /***
117 * Determines if a property should be ignored
118 *
119 * @param name the name of the property
120 * @return <code>true</code> if the property should be ignored
121 */
122 private boolean ignore(String name) {
123 boolean result = false;
124 if (_provider) {
125 if ((name.startsWith("JMSX") && !(name.equals("JMSXGroupID")
126 || name.equals("JMSXGroupSeq")))
127 || name.startsWith("JMS_")) {
128 result = true;
129 }
130 }
131 return result;
132 }
133
134 }
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