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Java > Open Source Codes > org > exolab > jms > net > multiplexer > ChannelInvocation


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 2003-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: ChannelInvocation.java,v 1.1 2005/06/04 14:34:45 tanderson Exp $
44  */
45 package org.exolab.jms.net.multiplexer;
46
47 import java.io.IOException JavaDoc;
48
49 import org.apache.commons.logging.LogFactory;
50 import org.apache.commons.logging.Log;
51
52 import org.exolab.jms.net.connector.Caller;
53 import org.exolab.jms.net.connector.Invocation;
54 import org.exolab.jms.net.connector.Request;
55 import org.exolab.jms.net.connector.Response;
56 import org.exolab.jms.net.connector.InvocationHandler;
57
58
59 /**
60  * <code>ChannelInvocation</code> is used by
61  * {@link MultiplexedManagedConnection} to pass remote method invocations
62  * on a {@link Channel} to an {@link InvocationHandler}.
63  *
64  * @author <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
65  * @version $Revision: 1.1 $ $Date: 2005/06/04 14:34:45 $
66  */
67 class ChannelInvocation implements Invocation {
68
69     /**
70      * The channel to use.
71      */
72     private final Channel _channel;
73
74     /**
75      * The caller peforming the invocation.
76      */
77     private final Caller _caller;
78
79     /**
80      * The logger.
81      */
82     private static final Log _log = LogFactory.getLog(ChannelInvocation.class);
83
84
85     /**
86      * Construct a new <code>ChannelInvocation</code>.
87      *
88      * @param channel the channel to use
89      * @param caller the caller performing the invocation
90      */
91     public ChannelInvocation(Channel channel, Caller caller) {
92         _channel = channel;
93         _caller = caller;
94     }
95
96     /**
97      * Reads the request from the channel.
98      *
99      * @return the request
100      * @throws IOException if the request can't be read
101      */
102     public Request getRequest() throws IOException JavaDoc {
103         return _channel.readRequest();
104     }
105
106     /**
107      * Returns the caller performing the invocation.
108      *
109      * @return the caller
110      */
111     public Caller getCaller() {
112         return _caller;
113     }
114
115     /**
116      * Writes the response to the channel.
117      *
118      * @param response the response to write
119      */
120     public void setResponse(Response response) {
121         try {
122             _channel.writeResponse(response);
123         } catch (Exception JavaDoc exception) {
124             _log.debug(exception, exception);
125         }
126     }
127
128 }
129
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