01: /*
02: * Copyright (C) 1999-2004 <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</a>
03: *
04: * This library is free software; you can redistribute it and/or
05: * modify it under the terms of the GNU Lesser General Public
06: * License as published by the Free Software Foundation; either
07: * version 2 of the License, or (at your option) any later version.
08: *
09: * This library is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12: * Lesser General Public License for more details.
13: *
14: * You should have received a copy of the GNU Lesser General Public
15: * License along with this library; if not, write to the Free Software
16: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17: */
18: package test.org.mandarax.reference;
19:
20: import org.mandarax.kernel.InferenceEngine;
21: import org.mandarax.kernel.KnowledgeBase;
22: import org.mandarax.kernel.Query;
23:
24: /**
25: * Simple NAF test.
26: * @author <A href="http://www-ist.massey.ac.nz/JBDietrich" target="_top">Jens Dietrich</A>
27: * @version 3.4 <7 March 05>
28: * @since 2.0
29: */
30: public class TestInferenceEngineNAF1 extends TestInferenceEngineNAF {
31:
32: /**
33: * Constructor.
34: * @param aKnowledgeBase a new, uninitialized knowledge base that will be used
35: * @param anInferenceEngine the inference engine that will be tested
36: */
37: public TestInferenceEngineNAF1(KnowledgeBase aKnowledgeBase,
38: InferenceEngine anInferenceEngine) {
39: super (aKnowledgeBase, anInferenceEngine);
40: }
41:
42: /**
43: * Add facts and rules to the knowledge base.
44: * @param knowledge org.mandarax.kernel.KnowledgeBase
45: */
46: public void feedKnowledgeBase(KnowledgeBase knowledge) {
47: knowledge.removeAll();
48: knowledge.add(lfs.rule(lfs.prereq(Q, lfs.variable("x"), false),
49: lfs.prereq(P, lfs.variable("x"), true), lfs.fact(R, lfs
50: .variable("x"))));
51: knowledge.add(lfs.fact(Q, "a"));
52:
53: }
54:
55: /**
56: * Get a description of this test case.
57: * This is used by the <code>org.mandarax.demo</code>
58: * package to display the test cases.
59: * @return a brief description of the test case
60: */
61: public String getDescription() {
62: return "Test for NAF";
63: }
64:
65: /**
66: * Get the expected result.
67: * @return a string
68: */
69: public String getExpected() {
70: return "a";
71: }
72:
73: /**
74: * Get the query.
75: * @return a query
76: */
77: public Query getQuery() {
78: return lfs.query(lfs.fact(R, lfs.variable(QUERY_VARIABLE)),
79: "?R(x)");
80: }
81: }
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