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


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 com.db4o.*;
24 import com.db4o.query.*;
25
26 public class SodaEvaluation {
27     
28     public SodaEvaluation child;
29     public String JavaDoc name;
30     
31     public void store(){
32         Test.deleteAllInstances(this);
33         name = "one";
34         Test.store(this);
35         SodaEvaluation se = new SodaEvaluation();
36         se.child= new SodaEvaluation();
37         se.child.name = "three";
38         se.name = "two";
39         Test.store(se);
40         
41     }
42     
43     public void test(){
44         final String JavaDoc nameConstraint = "three";
45         Query q = Test.query();
46         Query cq = q;
47         q.constrain(this.getClass());
48         cq = cq.descend("child");
49         cq.constrain(new Evaluation() {
50             public void evaluate(Candidate candidate) {
51                 candidate.include(((SodaEvaluation)candidate.getObject()).name.equals(nameConstraint));
52             }
53         });
54         ObjectSet os = q.execute();
55         Test.ensure(os.size() == 1);
56         SodaEvaluation se = (SodaEvaluation)os.next();
57         Test.ensure(se.name.equals("two"));
58         
59     }
60
61 }
62
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