01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: 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 abstract class QueryByInterfaceBase {
27:
28: private static class SimpleEvaluation implements Evaluation {
29: private String value;
30:
31: private SimpleEvaluation(String value) {
32: this .value = value;
33: }
34:
35: public void evaluate(Candidate candidate) {
36: candidate.include(((IFoo) candidate.getObject()).s()
37: .equals(value));
38: }
39: }
40:
41: public static interface IFoo {
42: String s();
43: }
44:
45: public static class Bar implements IFoo {
46: public int i;
47:
48: public Bar(int i) {
49: this .i = i;
50: }
51:
52: public String s() {
53: return String.valueOf((char) ('A' + i));
54: }
55: }
56:
57: public static class Baz implements IFoo {
58: public String s;
59:
60: public Baz(String s) {
61: this .s = s;
62: }
63:
64: public String s() {
65: return s;
66: }
67: }
68:
69: protected void assertSODA(String value, int expCount) {
70: Query query = Test.objectContainer().query();
71: Constraint constraint = query.constrain(IFoo.class);
72: Test.ensure(constraint != null);
73: query.descend("s").constrain(value);
74: ObjectSet result = query.execute();
75: Test.ensure(result.size() == expCount);
76: }
77:
78: protected void assertEvaluation(String value, int expCount) {
79: Query query = Test.objectContainer().query();
80: Constraint constraint = query.constrain(IFoo.class);
81: Test.ensure(constraint != null);
82: query.constrain(new SimpleEvaluation(value));
83: ObjectSet result = query.execute();
84: Test.ensure(result.size() == expCount);
85: }
86: }
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