1 /* 2 * $Id: UMOInterceptor.java 7976 2007-08-21 14:26:13Z dirk.olmes $ 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 CPAL v1.0 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 public interface UMOInterceptor 20 { 21 /** 22 * Invoked by the previous interceptor in the chain 23 * 24 * @param invocation the invocation containing info about the current message and 25 * component 26 * @return A result message that may have been altered by this invocation 27 * @throws UMOException if the invocation fails 28 */ 29 UMOMessage intercept(Invocation invocation) throws UMOException; 30 }