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Java > Open Source Codes > com > db4o > test > types > RStack


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.types;
22
23 import java.util.*;
24
25 import com.db4o.*;
26 import com.db4o.test.*;
27
28 public class RStack extends RVector{
29
30     public Object JavaDoc newInstance(){
31         return new Stack();
32     }
33
34     public void specific(ObjectContainer con, int step){
35         super.specific(con,step);
36         TEntry entry = new TEntry().lastElement();
37         Stack stack = new Stack();
38         if(step > 0){
39             stack.addElement(entry.key);
40             ObjectSet set = con.get(stack);
41             if(set.size() != step){
42                 Regression.addError("Stack member query not found");
43             }else{
44                 Stack res = (Stack)set.next();
45                 if(! (stack.pop().equals(new TEntry().lastElement().key))){
46                     Regression.addError("Stack order changed.");
47                 }
48             }
49         }
50     }
51 }
52
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