1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
package uk.ac.ox.cs.pagoda.global_tests;
import org.semanticweb.owlapi.apibinding.OWLManager;
import org.semanticweb.owlapi.model.*;
import org.testng.Assert;
import org.testng.annotations.Test;
import uk.ac.ox.cs.pagoda.query.AnswerTuple;
import uk.ac.ox.cs.pagoda.query.AnswerTuples;
import uk.ac.ox.cs.pagoda.query.QueryRecord;
import uk.ac.ox.cs.pagoda.reasoner.QueryReasoner;
import uk.ac.ox.cs.pagoda.util.TestUtil;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
public class BugTests {
public static final String NS = "http://example.org/test#%s";
private IRI getEntityIRI(String name) {
return IRI.create(String.format(NS, name));
}
@Test
public void minimumCardinalityAxiom() throws OWLOntologyCreationException, IOException, OWLOntologyStorageException {
/*
* Build test ontology
* */
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
OWLDataFactory factory = manager.getOWLDataFactory();
OWLOntology ontology = manager.createOntology();
OWLClass student = factory.getOWLClass(getEntityIRI("Student"));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(student));
OWLClass course = factory.getOWLClass(getEntityIRI("Course"));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(course));
OWLClass hardWorkingStudent = factory.getOWLClass(getEntityIRI("HardWorkingStudent"));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(hardWorkingStudent));
OWLNamedIndividual a = factory.getOWLNamedIndividual(getEntityIRI("a"));
OWLNamedIndividual b = factory.getOWLNamedIndividual(getEntityIRI("b"));
OWLNamedIndividual c1 = factory.getOWLNamedIndividual(getEntityIRI("c1"));
OWLNamedIndividual c2 = factory.getOWLNamedIndividual(getEntityIRI("c2"));
OWLNamedIndividual c3 = factory.getOWLNamedIndividual(getEntityIRI("c3"));
OWLNamedIndividual d1 = factory.getOWLNamedIndividual(getEntityIRI("d1"));
OWLNamedIndividual d2 = factory.getOWLNamedIndividual(getEntityIRI("d2"));
OWLNamedIndividual d3 = factory.getOWLNamedIndividual(getEntityIRI("d3"));
OWLObjectProperty takesCourse = factory.getOWLObjectProperty(IRI.create(String.format(NS, "takesCourse")));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(takesCourse));
// Class assertions
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(student, a)); // Student(a)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(student, b)); // Student(b)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(course, c1)); // Course(c1)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(course, c2)); // Course(c2)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(course, c3)); // Course(c3)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(course, d1)); // Course(d1)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(course, d2)); // Course(d2)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(course, d3)); // Course(d3)
// Role assertions
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(takesCourse, a, c1)); // takesCourse(a,c1)
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(takesCourse, a, c2)); // takesCourse(a,c2)
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(takesCourse, a, c3)); // takesCourse(a,c3)
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(takesCourse, b, d1)); // takesCourse(b,d1)
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(takesCourse, b, d2)); // takesCourse(b,d2)
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(takesCourse, b, d3)); // takesCourse(b,d3)
// Minimum cardinality axiom
manager.addAxiom(ontology,
factory.getOWLEquivalentClassesAxiom(hardWorkingStudent,
factory.getOWLObjectMinCardinality(3,
takesCourse)));
manager.saveOntology(ontology, Files.newOutputStream(Paths.get("/home/alessandro/Desktop/test-ontology.owl")));
/*
* Test one query
* */
QueryReasoner pagoda = QueryReasoner.getInstance(ontology);
pagoda.loadOntology(ontology);
if (pagoda.preprocess()) {
String query = "select distinct ?x ?y " +
" where { "
+ " ?x <" + takesCourse.toStringID() + "> _:z . "
+ " ?y <" + takesCourse.toStringID() + "> _:z " +
" }";
AnswerTuples answers = pagoda.evaluate(query);
int count = 0;
for (AnswerTuple ans; answers.isValid(); answers.moveNext()) {
ans = answers.getTuple();
TestUtil.logInfo(ans);
count++;
}
Assert.assertEquals(count, 2);
}
pagoda.dispose();
}
/**
* Bug: the relevant ontology is not a subset of the original one.
*
* @throws OWLOntologyCreationException
* @throws IOException
* @throws OWLOntologyStorageException
*/
@Test
public void rTest() throws OWLOntologyCreationException, IOException, OWLOntologyStorageException {
/*
* Build test ontology
* */
OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
OWLDataFactory factory = manager.getOWLDataFactory();
OWLOntology ontology = manager.createOntology();
OWLClass classA = factory.getOWLClass(getEntityIRI("A"));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(classA));
OWLClass classB = factory.getOWLClass(getEntityIRI("B"));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(classB));
OWLNamedIndividual a = factory.getOWLNamedIndividual(getEntityIRI("a"));
OWLNamedIndividual b = factory.getOWLNamedIndividual(getEntityIRI("b"));
OWLNamedIndividual c = factory.getOWLNamedIndividual(getEntityIRI("c"));
OWLObjectProperty roleR = factory.getOWLObjectProperty(IRI.create(String.format(NS, "R")));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(roleR));
OWLObjectProperty roleP = factory.getOWLObjectProperty(IRI.create(String.format(NS, "P")));
manager.addAxiom(ontology, factory.getOWLDeclarationAxiom(roleP));
// Class assertions
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(classA, a)); // A(a)
manager.addAxiom(ontology, factory.getOWLClassAssertionAxiom(classA, b)); // A(b)
manager.addAxiom(ontology, factory.getOWLObjectPropertyAssertionAxiom(roleP, c, a)); // P(c,a)
// Axioms
// subsetOf(A someValuesFrom(R owl:Thing))
manager.addAxiom(ontology,
factory.getOWLSubClassOfAxiom(classA,
factory.getOWLObjectSomeValuesFrom(roleR,
factory.getOWLThing())));
// inverseFunctional(R)
manager.addAxiom(ontology,
factory.getOWLInverseFunctionalObjectPropertyAxiom(roleR));
// subsetOf(someValuesFrom(inverseOf(P) owl:thing) B)
manager.addAxiom(ontology,
factory.getOWLSubClassOfAxiom(factory.getOWLObjectSomeValuesFrom(roleP.getInverseProperty(),
factory.getOWLThing()),
classB));
/*
* Save the ontology
* */
// manager.saveOntology(ontology, Files.newOutputStream(Paths.get("/home/alessandro/Desktop/test-ontology.owl")));
/*
* Test one query
* */
QueryReasoner pagoda = QueryReasoner.getInstance(ontology);
pagoda.loadOntology(ontology);
if(pagoda.preprocess()) {
String queryStr = "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> " +
"select distinct ?x" +
" where { "
+ " ?x rdf:type " + classB +
" }";
QueryRecord queryRecord = pagoda.getQueryManager().create(queryStr);
System.out.println(queryRecord);
pagoda.evaluate(queryRecord);
AnswerTuples answers = queryRecord.getAnswers();
System.out.println("Difficulty: " + queryRecord.getDifficulty());
for(AnswerTuple ans; answers.isValid(); answers.moveNext()) {
ans = answers.getTuple();
TestUtil.logInfo(ans);
}
}
pagoda.dispose();
}
}
|
