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Java > Open Source Codes > com > db4o > test > TreeSetCustomComparable


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;
22
23 import java.util.*;
24
25 import com.db4o.*;
26
27 /**
28  *
29  */

30 public class TreeSetCustomComparable implements Comparable JavaDoc{
31     
32     public Set path;
33
34     public TreeSetCustomComparable() {
35       this.path = new TreeSet();
36     }
37
38     public int compareTo(Object JavaDoc that) {
39       return hashCode()-that.hashCode();
40     }
41     
42     public void store(){
43         Test.deleteAllInstances(TreeMap.class);
44         Map map=new TreeMap();
45         map.put(new TreeSetCustomComparable(),new TreeSet());
46         Test.objectContainer().set(map);
47     }
48     
49     public void test(){
50         TreeMap map=new TreeMap();
51         ObjectSet result=Test.objectContainer().get(map);
52         while(result.hasNext()) {
53             TreeMap tm = (TreeMap)result.next();
54             Test.ensure(tm.size() == 1);
55             Iterator i = tm.keySet().iterator();
56             Test.ensure(i.hasNext());
57             TreeSetCustomComparable tscc = (TreeSetCustomComparable)i.next();
58             TreeSet ts = (TreeSet)tm.get(tscc);
59             Test.ensure(ts != null);
60         }
61     }
62 }
63
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