01: /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
02: *
03: * Licensed under the Apache License, Version 2.0 (the "License");
04: * you may not use this file except in compliance with the License.
05: * You may obtain a copy of the License at
06: *
07: * http://www.apache.org/licenses/LICENSE-2.0
08: *
09: * Unless required by applicable law or agreed to in writing, software
10: * distributed under the License is distributed on an "AS IS" BASIS,
11: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: * See the License for the specific language governing permissions and
13: * limitations under the License.
14: */
15:
16: package org.acegisecurity.runas;
17:
18: import org.acegisecurity.Authentication;
19: import org.acegisecurity.ConfigAttribute;
20: import org.acegisecurity.ConfigAttributeDefinition;
21: import org.acegisecurity.RunAsManager;
22:
23: /**
24: * Implementation of a {@link RunAsManager} that does nothing.<p>This class should be used if you do not require
25: * run-as authenticaiton replacement functionality.</p>
26: *
27: * @author Ben Alex
28: * @version $Id: NullRunAsManager.java 1496 2006-05-23 13:38:33Z benalex $
29: */
30: public class NullRunAsManager implements RunAsManager {
31: //~ Methods ========================================================================================================
32:
33: public Authentication buildRunAs(Authentication authentication,
34: Object object, ConfigAttributeDefinition config) {
35: return null;
36: }
37:
38: public boolean supports(ConfigAttribute attribute) {
39: return false;
40: }
41:
42: public boolean supports(Class clazz) {
43: return true;
44: }
45: }
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