Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
JMSTopicTransport |
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1 | /* | |
2 | The contents of this file are subject to the Mozilla Public License Version 1.1 | |
3 | (the "License"); you may not use this file except in compliance with the License. | |
4 | You may obtain a copy of the License at http://www.mozilla.org/MPL/ | |
5 | Software distributed under the License is distributed on an "AS IS" basis, | |
6 | WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the | |
7 | specific language governing rights and limitations under the License. | |
8 | ||
9 | The Original Code is "JMSTopicTransport.java". Description: | |
10 | "A TransportLayer that uses a JMS Topic" | |
11 | ||
12 | The Initial Developer of the Original Code is University Health Network. Copyright (C) | |
13 | 2004. All Rights Reserved. | |
14 | ||
15 | Contributor(s): ______________________________________. | |
16 | ||
17 | Alternatively, the contents of this file may be used under the terms of the | |
18 | GNU General Public License (the "GPL"), in which case the provisions of the GPL are | |
19 | applicable instead of those above. If you wish to allow use of your version of this | |
20 | file only under the terms of the GPL and not to allow others to use your version | |
21 | of this file under the MPL, indicate your decision by deleting the provisions above | |
22 | and replace them with the notice and other provisions required by the GPL License. | |
23 | If you do not delete the provisions above, a recipient may use your version of | |
24 | this file under either the MPL or the GPL. | |
25 | ||
26 | * Created on 5-May-2004 | |
27 | */ | |
28 | package ca.uhn.hl7v2.protocol.impl; | |
29 | ||
30 | import javax.jms.Connection; | |
31 | import javax.jms.JMSException; | |
32 | import javax.jms.Message; | |
33 | import javax.jms.Session; | |
34 | import javax.jms.Topic; | |
35 | import javax.jms.TopicConnection; | |
36 | import javax.jms.TopicPublisher; | |
37 | import javax.jms.TopicSession; | |
38 | import javax.jms.TopicSubscriber; | |
39 | ||
40 | import ca.uhn.hl7v2.protocol.TransportException; | |
41 | ||
42 | /** | |
43 | * A <code>TransportLayer</code> that uses a JMS Topic. | |
44 | * | |
45 | * @author <a href="mailto:bryan.tripp@uhn.on.ca">Bryan Tripp</a> | |
46 | * @version $Revision: 1.1 $ updated on $Date: 2007-02-19 02:24:26 $ by $Author: jamesagnew $ | |
47 | */ | |
48 | public class JMSTopicTransport extends AbstractJMSTransport { | |
49 | ||
50 | private TopicSession mySendingSession; | |
51 | private TopicSession myReceivingSession; | |
52 | private TopicPublisher myPublisher; | |
53 | private TopicSubscriber mySubscriber; | |
54 | private TopicConnection myConnection; | |
55 | private Topic myTopic; | |
56 | private String myMessageSelector; | |
57 | ||
58 | ||
59 | /** | |
60 | * @param theConnection the connection over which messages are written and read | |
61 | * @param theDestination the destination to/from which messages are written/read | |
62 | */ | |
63 | 0 | public JMSTopicTransport(TopicConnection theConnection, Topic theDestination) { |
64 | 0 | myConnection = theConnection; |
65 | 0 | myTopic = theDestination; |
66 | 0 | } |
67 | ||
68 | /** | |
69 | * @param theConnection the connection over which messages are written and read | |
70 | * @param theDestination the destination to/from which messages are written/read | |
71 | * @param theMessageSelector a JMS message selector which restricts the inbound | |
72 | * messages that are received (se JMS docs) | |
73 | */ | |
74 | 0 | public JMSTopicTransport(TopicConnection theConnection, Topic theDestination, String theMessageSelector) { |
75 | 0 | myConnection = theConnection; |
76 | 0 | myTopic = theDestination; |
77 | 0 | myMessageSelector = theMessageSelector; |
78 | 0 | } |
79 | ||
80 | /** | |
81 | * @see ca.uhn.hl7v2.protocol.impl.AbstractJMSTransport#getDestinationName() | |
82 | */ | |
83 | protected String getDestinationName() throws JMSException { | |
84 | 0 | return myTopic.getTopicName(); |
85 | } | |
86 | ||
87 | /** | |
88 | * @see ca.uhn.hl7v2.protocol.impl.AbstractJMSTransport#getConnection() | |
89 | */ | |
90 | public Connection getConnection() { | |
91 | 0 | return myConnection; |
92 | } | |
93 | ||
94 | /** | |
95 | * @see ca.uhn.hl7v2.protocol.impl.AbstractJMSTransport#getMessage() | |
96 | */ | |
97 | protected Message getMessage() throws JMSException { | |
98 | 0 | return mySendingSession.createTextMessage(); |
99 | } | |
100 | ||
101 | /** | |
102 | * @see ca.uhn.hl7v2.protocol.impl.AbstractJMSTransport#send(javax.jms.Message) | |
103 | */ | |
104 | protected void sendJMS(Message theMessage) throws JMSException { | |
105 | 0 | myPublisher.publish(theMessage); |
106 | 0 | } |
107 | ||
108 | /** | |
109 | * @see ca.uhn.hl7v2.protocol.impl.AbstractJMSTransport#receive() | |
110 | */ | |
111 | protected Message receiveJMS() throws JMSException { | |
112 | 0 | return mySubscriber.receive(); |
113 | } | |
114 | ||
115 | /** | |
116 | * @see ca.uhn.hl7v2.protocol.AbstractJMSTransport#doConnect() | |
117 | */ | |
118 | public void doConnect() throws TransportException { | |
119 | 0 | boolean transacted = false; |
120 | 0 | int ackMode = Session.AUTO_ACKNOWLEDGE; |
121 | ||
122 | 0 | doDisconnect(); |
123 | try { | |
124 | 0 | mySendingSession = myConnection.createTopicSession(transacted, ackMode); |
125 | 0 | myPublisher = mySendingSession.createPublisher(myTopic); |
126 | ||
127 | 0 | myReceivingSession = myConnection.createTopicSession(transacted, ackMode); |
128 | 0 | mySubscriber = myReceivingSession.createSubscriber(myTopic); |
129 | 0 | } catch (JMSException e) { |
130 | 0 | throw new TransportException(e); |
131 | 0 | } |
132 | 0 | } |
133 | ||
134 | /** | |
135 | * @see ca.uhn.hl7v2.protocol.impl.AbstractTransport#doDisconnect() | |
136 | */ | |
137 | public void doDisconnect() throws TransportException { | |
138 | try { | |
139 | 0 | if (mySendingSession != null) { |
140 | 0 | mySendingSession.close(); |
141 | } | |
142 | 0 | if (myReceivingSession != null) { |
143 | 0 | myReceivingSession.close(); |
144 | } | |
145 | 0 | } catch (JMSException e) { |
146 | 0 | throw new TransportException(e); |
147 | 0 | } |
148 | 0 | } |
149 | ||
150 | } |