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


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 import com.db4o.query.*;
27
28
29 /**
30  *
31  */
32 public class QueryForList {
33     
34     List _list;
35     
36     public void storeOne(){
37         _list = new QueryForListArrayList();
38         _list.add("hi");
39     }
40     
41     public void test(){
42         Query q = Test.query();
43         q.constrain(List.class);
44         ObjectSet objectSet = q.execute();
45         int found = 0;
46         while(objectSet.hasNext()){
47             Object JavaDoc obj = objectSet.next();
48             Test.ensure(obj instanceof List);
49             List list = (List)obj;
50             if(list instanceof QueryForListArrayList){
51                 found++;
52                 Test.ensure(list.get(0).equals("hi"));
53             }
54         }
55         Test.ensure(found == 1);
56     }
57     
58     static class QueryForListArrayList extends ArrayList{
59     }
60
61 }
62
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