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Java > Open Source Codes > org > objectweb > openccm > corba > Application


1 /*====================================================================
2
3 OpenCCM: The Open CORBA Component Model Platform
4 Copyright (C) 2000-2004 INRIA & USTL - LIFL - GOAL
5 Contact: openccm@objectweb.org
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with this library; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 USA
21
22 Initial developer(s): Philippe Merle.
23 Contributor(s): ______________________________________.
24
25 ====================================================================*/
26
27 package org.objectweb.openccm.corba;
28
29 /**
30  * This class provides the main structure of a CORBA client application.
31  *
32  * Subclasses must defined the run() method.
33  *
34  * @author <a HREF="mailto:Philippe.Merle@lifl.fr">Philippe Merle</a>
35  *
36  * @version 0.3
37  */
38
39 public abstract class Application
40 {
41     // ==================================================================
42 //
43 // Internal state.
44 //
45 // ==================================================================
46
47     // ==================================================================
48 //
49 // Constructor.
50 //
51 // ==================================================================
52
53     /**
54      ** The default constructor.
55      **/
56     public
57     Application()
58     {
59     }
60
61     // ==================================================================
62 //
63 // Internal methods.
64 //
65 // ==================================================================
66
67     /**
68      ** Report an exception stack.
69      **
70      ** @param exception The exception.
71      **/
72     protected void
73     report_exception(Exception JavaDoc exception)
74     {
75         System.err.print("Please report the following exception trace");
76         System.err.println(" to openccm@objectweb.org");
77
78         // added for a better bug report
79 System.err.println(", including your ORB name and version\n");
80         System.err.println("Operating System = "
81             + System.getProperty("os.name")
82             + System.getProperty("os.version")
83             +"\n");
84         System.err.println("JDK version = "
85             + System.getProperty("java.version")
86             +"\n");
87
88         exception.printStackTrace();
89     }
90
91     // ==================================================================
92 //
93 // Public methods.
94 //
95 // ==================================================================
96
97     /**
98      ** Start the application, i.e.
99      ** initialize the CORBA::ORB,
100      ** run the application,
101      ** destroy the CORBA::ORB.
102      **
103      ** @param args The command line arguments.
104      **/
105     public int
106     start(String JavaDoc[] args)
107     {
108         try
109         {
110             // Initialize the CORBA::ORB.
111 args = TheORB.initialize(args);
112
113             // Run the application.
114 int status = run(args);
115
116             // Destroy the CORBA::ORB.
117 TheORB.destroy();
118
119             return status;
120         }
121         catch(UserExceptionWrapper exc)
122         {
123             report_exception(exc.getUserException());
124         }
125         catch(Exception JavaDoc exc)
126         {
127             report_exception(exc);
128         }
129         return -1;
130     }
131
132     /**
133      ** Run the application.
134      **
135      ** @param args The command line arguments.
136      **
137      ** @return The status.
138      **/
139     public abstract int
140     run(String JavaDoc[] args);
141 }
142
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