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Java > Open Source Codes > org > mule > interceptors > EnvelopeInterceptor


1 /*
2  * $Id: EnvelopeInterceptor.java 3798 2006-11-04 04:07:14Z aperepel $
3  * --------------------------------------------------------------------------------------
4  * Copyright (c) MuleSource, Inc. All rights reserved. http://www.mulesource.com
5  *
6  * The software in this package is published under the terms of the MuleSource MPL
7  * license, a copy of which has been included with this distribution in the
8  * LICENSE.txt file.
9  */
10
11 package org.mule.interceptors;
12
13 import org.mule.umo.Invocation;
14 import org.mule.umo.UMOException;
15 import org.mule.umo.UMOInterceptor;
16 import org.mule.umo.UMOMessage;
17
18 /**
19  * <code>EnvelopeInterceptor</code> is an intercepter that will fire before and
20  * after an event is received.
21  *
22  * @author <a HREF="mailto:ross.mason@symphonysoft.com">Ross Mason</a>
23  * @version $Revision: 3798 $
24  */
25 public abstract class EnvelopeInterceptor implements UMOInterceptor
26 {
27     /**
28      * This method is invoked before the event is processed
29      *
30      * @param invocation the message invocation being processed
31      */
32     public abstract void before(Invocation invocation) throws UMOException;
33
34     /**
35      * This method is invoked after the event has been processed
36      *
37      * @param invocation the message invocation being processed
38      */
39     public abstract void after(Invocation invocation) throws UMOException;
40
41     public final UMOMessage intercept(Invocation invocation) throws UMOException
42     {
43         before(invocation);
44         UMOMessage message = invocation.execute();
45         invocation.setMessage(message);
46         after(invocation);
47         return message;
48     }
49 }
50
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