1 /*
2 * $Id: Interceptor.java,v 1.2 2004/05/23 10:26:57 eelco12 Exp $
3 * $Revision: 1.2 $
4 * $Date: 2004/05/23 10:26:57 $
5 *
6 * ====================================================================
7 * Copyright (c) 2003, Open Edge B.V.
8 * All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 * Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer. Redistributions
13 * in binary form must reproduce the above copyright notice, this list of
14 * conditions and the following disclaimer in the documentation and/or other
15 * materials provided with the distribution. Neither the name of OpenEdge B.V.
16 * nor the names of its contributors may be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 package nl.openedge.baritus.interceptors;
32
33 /***
34 * Tagging interface for interceptors. Clients should use one or more of the specific
35 * interfaces to actually intercept on something.
36 *
37 * Interceptors provide a means to encapsulate cross-cutting code that is
38 * executed on pre-defined points in the line of execution.
39 *
40 * Interceptors can be used to decorate the normal execution. Also, by throwing FlowExceptions, interceptors can
41 * alter the flow of execution. An interceptor can throw a FlowException if it wants Baritus to stop
42 * normal processing and go to the given declared view (using ReturnNowFlowException) such as 'error',
43 * or dispatch to an arbitrary - non declared - URL (using DispatchNowFlowException) location.
44 *
45 * @author Eelco Hillenius
46 */
47 public interface Interceptor
48 {
49
50 }