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Java > Open Source Codes > net > jforum > repository > RolesRepository


1 /*
2  * Copyright (c) Rafael Steil
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms,
6  * with or without modification, are permitted provided
7  * that the following conditions are met:
8  *
9  * 1) Redistributions of source code must retain the above
10  * copyright notice, this list of conditions and the
11  * following disclaimer.
12  * 2) Redistributions in binary form must reproduce the
13  * above copyright notice, this list of conditions and
14  * the following disclaimer in the documentation and/or
15  * other materials provided with the distribution.
16  * 3) Neither the name of "Rafael Steil" nor
17  * the names of its contributors may be used to endorse
18  * or promote products derived from this software without
19  * specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
22  * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
23  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
24  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
27  * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
32  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
33  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
34  * IN CONTRACT, STRICT LIABILITY, OR TORT
35  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
36  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
37  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
38  *
39  * Created on Apr 5, 2005 12:53:14 PM
40  * The JForum Project
41  * http://www.jforum.net
42  */
43 package net.jforum.repository;
44
45 import net.jforum.cache.CacheEngine;
46 import net.jforum.cache.Cacheable;
47 import net.jforum.security.RoleCollection;
48
49 /**
50  * @author Rafael Steil
51  * @version $Id: RolesRepository.java,v 1.4 2005/09/16 16:11:29 rafaelsteil Exp $
52  */
53 public class RolesRepository implements Cacheable
54 {
55     private static final String JavaDoc FQN = "roles";
56     private static CacheEngine cache;
57     
58     /**
59      * @see net.jforum.cache.Cacheable#setCacheEngine(net.jforum.cache.CacheEngine)
60      */
61     public void setCacheEngine(CacheEngine engine)
62     {
63         cache = engine;
64     }
65     
66     /**
67      * Gets the group roles.
68      *
69      * @param groupId The group id
70      * @return The roles, if found, or <code>null</code> otherwise.
71      */
72     public static RoleCollection getGroupRoles(int groupId)
73     {
74         return (RoleCollection)cache.get(FQN, Integer.toString(groupId));
75     }
76     
77     /**
78      * Clears the cache
79      */
80     public static void clear()
81     {
82         cache.add(FQN, null);
83     }
84     
85     /**
86      * Get merged roles from a set of groups
87      * @param ids The group ids
88      * @return The roles, if found, or <code>null</code> otherwise.
89      */
90     public static RoleCollection getGroupRoles(int[] ids)
91     {
92         return (RoleCollection)cache.get(FQN, makeId(ids));
93     }
94     
95     private static String JavaDoc makeId(int[] ids)
96     {
97         String JavaDoc id = "";
98         
99         for (int i = 0; i < ids.length; i++) {
100             id += ids[i];
101         }
102         
103         return id;
104     }
105     
106     /**
107      * Adds merged roles to the cache.
108      *
109      * @param ids The ids of the groups
110      * @param roles The merges roles to add
111      */
112     public static void addMergedGroupRoles(int[] ids, RoleCollection roles)
113     {
114         cache.add(FQN, makeId(ids), roles);
115     }
116
117     /**
118      * Adds the roles of a group to the cache.
119      *
120      * @param groupId The group id
121      * @param roles The group's roles
122      */
123     public static void addGroupRoles(int groupId, RoleCollection roles)
124     {
125         cache.add(FQN, Integer.toString(groupId), roles);
126     }
127 }
128
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