KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > jms > selector > IdentifierSelector


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.jms.selector;
30
31 import com.caucho.util.IntMap;
32 import com.caucho.util.L10N;
33
34 import javax.jms.JMSException JavaDoc;
35 import javax.jms.Message JavaDoc;
36
37 /**
38  * The selector to grab a property.
39  */
40 public class IdentifierSelector extends Selector {
41   static L10N L = new L10N(Selector.class);
42
43   static final IntMap _specialSelectors;
44
45   private String JavaDoc _name;
46
47   private IdentifierSelector(String JavaDoc name)
48   {
49     _name = name;
50   }
51
52   static Selector create(String JavaDoc name)
53   {
54     int type = _specialSelectors.get(name.toLowerCase());
55
56     if (type >= 0)
57       return new SpecialIdentifierSelector(type);
58
59     return new IdentifierSelector(name);
60   }
61
62   /**
63    * Evaluate the message. The boolean literal selector returns
64    * the value of the boolean.
65    */
66   Object JavaDoc evaluate(Message JavaDoc message)
67     throws JMSException JavaDoc
68   {
69     return message.getObjectProperty(_name);
70   }
71
72   public String JavaDoc toString()
73   {
74     return _name;
75   }
76
77   static {
78     _specialSelectors = new IntMap();
79
80     _specialSelectors.put("jmsdeliverymode", SpecialIdentifierSelector.JMS_DELIVERY_MODE);
81     _specialSelectors.put("jmspriority", SpecialIdentifierSelector.JMS_PRIORITY);
82     _specialSelectors.put("jmsmessageid", SpecialIdentifierSelector.JMS_MESSAGE_ID);
83     _specialSelectors.put("jmstimestamp", SpecialIdentifierSelector.JMS_TIMESTAMP);
84     _specialSelectors.put("jmscorrelationid", SpecialIdentifierSelector.JMS_CORRELATION_ID);
85     _specialSelectors.put("jmstype", SpecialIdentifierSelector.JMS_TYPE);
86   }
87 }
88
Popular Tags