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Java > Open Source Codes > org > mule > umo > UMOInterceptor


1 /*
2  * $Id: UMOInterceptor.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.umo;
12
13 /**
14  * <code>UMOInterceptor</code> is based on a similar concept of servlet filters and
15  * works much the same way. This method is more commonally known as the interceptor
16  * pattern and it allows for pre and processing of invocations on the object being
17  * intercepted.
18  *
19  * @author <a HREF="mailto:ross.mason@symphonysoft.com">Ross Mason</a>
20  * @version $Revision: 3798 $
21  */
22 public interface UMOInterceptor
23 {
24     /**
25      * Invoked by the previous interceptor in the chain
26      *
27      * @param invocation the invocation containing info about the current message and
28      * component
29      * @return A result message that may have been altered by this invocation
30      * @throws UMOException if the invocation fails
31      */
32     UMOMessage intercept(Invocation invocation) throws UMOException;
33 }
34
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