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Java > Open Source Codes > org > lucane > common > acl > ConceptComparator


1 /*
2  * Lucane - a collaborative platform
3  * Copyright (C) 2005 Vincent Fiack <vfiack@mail15.com>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19 package org.lucane.common.acl;
20
21 import java.util.Comparator JavaDoc;
22
23 import org.lucane.common.concepts.Concept;
24 import org.lucane.common.concepts.GroupConcept;
25 import org.lucane.common.concepts.UserConcept;
26
27 public class ConceptComparator implements Comparator JavaDoc
28 {
29     public int compare(Object JavaDoc o1, Object JavaDoc o2)
30     {
31         Concept c1 = (Concept)o1;
32         Concept c2 = (Concept)o2;
33     
34         if(c1 instanceof GroupConcept && c2 instanceof UserConcept)
35             return -1;
36         if(c1 instanceof UserConcept && c2 instanceof GroupConcept)
37             return 1;
38         
39         return c1.getName().compareTo(c2.getName());
40     }
41 }
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