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Java > Open Source Codes > com > caucho > portal > generic > Constraint


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * 3. The end-user documentation included with the redistribution, if
19  * any, must include the following acknowlegement:
20  * "This product includes software developed by the
21  * Caucho Technology (http://www.caucho.com/)."
22  * Alternately, this acknowlegement may appear in the software itself,
23  * if and wherever such third-party acknowlegements normally appear.
24  *
25  * 4. The names "Hessian", "Resin", and "Caucho" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * info@caucho.com.
29  *
30  * 5. Products derived from this software may not be called "Resin"
31  * nor may "Resin" appear in their names without prior written
32  * permission of Caucho Technology.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
35  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
36  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37  * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
38  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
39  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
40  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
42  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
43  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
44  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  * @author Sam
47  */
48
49
50 package com.caucho.portal.generic;
51
52 import javax.portlet.PortletRequest;
53 import javax.portlet.PortletResponse;
54
55
56 abstract public class Constraint
57 {
58   /**
59    * Return value for check(), indicates that the request can proceed
60    */
61   final static public int SC_PASS = 0;
62
63   /**
64    * Return value for check(), indicates that the request cannot proceed
65    * for the current portlet but other portlets can continue to be
66    * processed.
67    */
68   final static public int SC_EXCLUDE = 0xF000;
69   
70   /**
71    * Return value for check(), indicates that the request cannot proceed
72    * for the current portlet. The constraint is passed to
73    * {@link Window#handleConstraint(ConstraintFailureEvent)}.
74    */
75   final static public int SC_FAIL = 503;
76   
77   /**
78    * Return value for check(), indicates that the client is not authorized
79    * for the current portlet. The constraint is passed to
80    * {@link Window#handleConstraint(ConstraintFailureEvent)}.
81    */
82   final static public int SC_FORBIDDEN = 403;
83   
84   abstract public int check(PortletRequest request, PortletResponse response);
85 }
86
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