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Java > Open Source Codes > org > apache > lenya > ac > AccessControllerResolver


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  *
16  */
17
18 /* $Id: AccessControllerResolver.java 42616 2004-03-03 12:56:33Z gregor $ */
19
20 package org.apache.lenya.ac;
21
22 import org.apache.avalon.framework.component.Component;
23
24 /**
25  * An access controller resolver resolves the appropriate access controller
26  * for a given Cocoon object model.
27  */
28 public interface AccessControllerResolver extends Component {
29     
30     String JavaDoc ROLE = AccessControllerResolver.class.getName();
31     String JavaDoc DEFAULT_RESOLVER = "publication";
32
33     /**
34      * Resolves an access controller for a certain URL.
35      * @param webappUrl The URL within the web application (without context prefix).
36      * @return An access controller or <code>null</code> if no controller could be resolved.
37      * @throws AccessControlException when something went wrong.
38      */
39     AccessController resolveAccessController(String JavaDoc webappUrl) throws AccessControlException;
40     
41     /**
42      * Releases a resolved access controller.
43      * @param controller The access controller to release.
44      */
45     void release(AccessController controller);
46
47 }
48
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