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 info@exolab.org.
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 1999-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: BasicService.java,v 1.2 2005/08/30 04:56:14 tanderson Exp $
44 */
45
46 package org.exolab.jms.service;
47
48
49
50
51 /***
52 * <code>BasicService</code> is a service implementation that will run the
53 * service in a separate thread. Derived class must define an implementation for
54 * the 'run' method.
55 *
56 * @author <a href="mailto:jima@comware.com.au">Jim Alateras</a>
57 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
58 * @version $Revision: 1.2 $ $Date: 2005/08/30 04:56:14 $
59 * @see Service
60 */
61 public abstract class BasicService extends Service implements Runnable {
62
63 /***
64 * The service thread.
65 */
66 private Thread _thread = null;
67
68
69 /***
70 * Construct a new <code>BasicService</code> with no name.
71 */
72 public BasicService() {
73 }
74
75 /***
76 * Construct a new <code>BasicService</code>, specifying its name.
77 *
78 * @param name the name of the service
79 */
80 public BasicService(String name) {
81 super(name);
82 }
83
84 /***
85 * Return the state of the object as a string.
86 *
87 * @return a string form of the object state
88 */
89 public String toString() {
90 StringBuffer buf = new StringBuffer("BasicService:[");
91 buf.append("name=");
92 buf.append(getName());
93 buf.append("thread=");
94 buf.append(_thread);
95 buf.append("started=");
96 buf.append(isStarted());
97 buf.append("]");
98 return buf.toString();
99 }
100
101 /***
102 * Start the service.
103 */
104 protected void doStart() throws ServiceException {
105 _thread = new Thread(this, getName());
106 _thread.start();
107 }
108
109 /***
110 * Stop the service.
111 */
112 protected void doStop() throws ServiceException {
113 _thread.interrupt();
114 try {
115 _thread.join();
116 } catch (InterruptedException ignore) {
117 } finally {
118 _thread = null;
119 }
120 }
121
122 }