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Java > Open Source Codes > org > apache > slide > webdav > util > resourcekind > PrincipalImpl


1 /*
2  * $Header: /home/cvs/jakarta-slide/src/webdav/server/org/apache/slide/webdav/util/resourcekind/PrincipalImpl.java,v 1.9 2004/08/05 14:43:32 dflorey Exp $
3  * $Revision: 1.9 $
4  * $Date: 2004/08/05 14:43:32 $
5  *
6  * ====================================================================
7  *
8  * Copyright 1999-2002 The Apache Software Foundation
9  *
10  * Licensed under the Apache License, Version 2.0 (the "License");
11  * you may not use this file except in compliance with the License.
12  * You may obtain a copy of the License at
13  *
14  * http://www.apache.org/licenses/LICENSE-2.0
15  *
16  * Unless required by applicable law or agreed to in writing, software
17  * distributed under the License is distributed on an "AS IS" BASIS,
18  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19  * See the License for the specific language governing permissions and
20  * limitations under the License.
21  *
22  */
23
24 package org.apache.slide.webdav.util.resourcekind;
25
26 import java.util.Set JavaDoc;
27
28
29 public class PrincipalImpl extends DeltavCompliantImpl implements Principal {
30     
31     protected static ResourceKind singleton = null;
32     
33     /**
34      * Factory method.
35      */
36     static public ResourceKind getInstance() {
37         if( singleton == null )
38             singleton = new PrincipalImpl();
39         return singleton;
40     }
41     
42     /**
43      * Protected constructor
44      */
45     protected PrincipalImpl() {
46     }
47
48     /**
49      * Get the set properties supported by this resource kind.
50      * @param filter Q_PROTECTED_ONLY or Q_COMPUTED_ONLY (no filtering if null)
51      * @param excludedFeatures array of F_* constants (no filtering if null or empty)
52      * @see org.apache.slide.webdav.util.WebdavConstants
53      * @see org.apache.slide.webdav.util.DeltavConstants
54      * @see org.apache.slide.webdav.util.AclConstants
55      * @see org.apache.slide.webdav.util.DaslConstants
56      */
57     public Set JavaDoc getSupportedLiveProperties( String JavaDoc[] excludedFeatures ) {
58         Set JavaDoc s = super.getSupportedLiveProperties( excludedFeatures );
59         if( isSupportedFeature(F_ACCESS_CONTROL, excludedFeatures) ) {
60             s.add( P_ALTERNATE_URI_SET );
61             s.add( P_PRINCIPAL_URL );
62             s.add( P_GROUP_MEMBER_SET );
63             s.add( P_GROUP_MEMBERSHIP );
64         }
65         return s;
66     }
67     
68     /**
69      *
70      */
71     public String JavaDoc toString() {
72         return "principal";
73     }
74 }
75
76
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