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Java > Open Source Codes > com > db4o > test > test2 > RTreeMapComparator


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o.test.test2;
22
23 import java.util.*;
24
25 import com.db4o.*;
26 import com.db4o.test.*;
27 import com.db4o.test.types.*;
28
29 public class RTreeMapComparator extends RMap{
30
31     TEntry entry(){
32         return new IntEntry();
33     }
34
35     public Object JavaDoc newInstance(){
36         return new TreeMap(new CustomComparator());
37     }
38
39     public void specific(ObjectContainer con, int step){
40         if(step > 0){
41             int foundComparators = 0;
42             ObjectSet set = con.get(new TreeMap());
43             while(set.hasNext()){
44                 TreeMap tm = (TreeMap)set.next();
45                 Comparator cmp = tm.comparator();
46                 if(cmp != null){
47                     if(cmp instanceof CustomComparator){
48                         foundComparators ++;
49                         if(foundComparators >= step){
50                             return;
51                         }
52                     }
53                 }
54             }
55             Regression.addError("RTreeMapComparator comparator lost on the way");
56         }
57     }
58 }
59
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