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AxiomLoaderTest.java
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AxiomLoaderTest.java
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/**
* Copyright (C) 2019 Czech Technical University in Prague
* <p>
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
* version.
* <p>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.ontodriver.sesame;
import cz.cvut.kbss.ontodriver.config.DriverConfiguration;
import cz.cvut.kbss.ontodriver.descriptor.AxiomDescriptor;
import cz.cvut.kbss.ontodriver.exception.OntoDriverException;
import cz.cvut.kbss.ontodriver.model.Assertion;
import cz.cvut.kbss.ontodriver.model.Axiom;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import cz.cvut.kbss.ontodriver.sesame.config.Constants;
import cz.cvut.kbss.ontodriver.sesame.config.RuntimeConfiguration;
import cz.cvut.kbss.ontodriver.sesame.config.SesameConfigParam;
import cz.cvut.kbss.ontodriver.sesame.connector.Connector;
import cz.cvut.kbss.ontodriver.sesame.environment.Generator;
import cz.cvut.kbss.ontodriver.sesame.environment.TestRepositoryProvider;
import org.eclipse.rdf4j.model.ValueFactory;
import org.eclipse.rdf4j.model.impl.SimpleValueFactory;
import org.eclipse.rdf4j.model.vocabulary.RDFS;
import org.eclipse.rdf4j.repository.Repository;
import org.eclipse.rdf4j.repository.RepositoryConnection;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.net.URI;
import java.util.*;
import java.util.stream.Collectors;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
class AxiomLoaderTest {
private TestRepositoryProvider repositoryProvider = new TestRepositoryProvider();
private Generator.GeneratedData generatedData;
private ValueFactory vf = SimpleValueFactory.getInstance();
private Connector connector;
private AxiomLoader axiomLoader;
@BeforeEach
void setUp() throws Exception {
this.connector = repositoryProvider.createConnector(false);
final Repository repository = connector.unwrap(Repository.class);
final DriverConfiguration driverConfig = new DriverConfiguration(TestRepositoryProvider.storageProperties());
this.axiomLoader = new AxiomLoader(connector, vf, new RuntimeConfiguration(driverConfig));
this.generatedData = Generator.initTestData(repository);
}
@AfterEach
void tearDown() throws Exception {
connector.close();
repositoryProvider.close();
}
@Test
void loadAxiomsForSingleAssertionFindsMatchingValues() throws Exception {
connector.begin();
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion property = generatedData.values.get(individual).keySet().iterator().next();
final Set<Object> values = generatedData.values.get(individual).get(property);
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(property);
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
assertEquals(values.size(), res.size());
for (Axiom a : res) {
assertEquals(individual, a.getSubject().toString());
assertEquals(property, a.getAssertion());
assertTrue(values.contains(a.getValue().getValue()));
}
}
@Test
void loadAxiomsReturnsEmptyCollectionForUnknownIndividual() throws Exception {
connector.begin();
final String individual = "http://krizik.felk.cvut.cz/ontologies/sesame/individuals#Unknown";
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(Assertion.createClassAssertion(false));
assertTrue(axiomLoader.loadAxioms(desc).isEmpty());
}
@Test
void loadAxiomsLoadsAxiomsBasedOnSpecifiedAssertions() throws Exception {
connector.begin();
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
generatedData.values.get(individual).keySet().forEach(desc::addAssertion);
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
assertEquals(generatedData.getTotalValueCount(individual), res.size());
}
@Test
void loadAxiomsSkipsValuesOfNonSelectedAssertions() throws Exception {
connector.begin();
final String individual = selectIndividualWithEnoughProperties();
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
final Set<Assertion> skippedAssertions = new HashSet<>();
int counter = 0;
for (Assertion a : generatedData.values.get(individual).keySet()) {
if (counter < Constants.DEFAULT_LOAD_ALL_THRESHOLD) {
desc.addAssertion(a);
} else {
skippedAssertions.add(a);
}
counter++;
}
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
res.forEach(a -> assertFalse(skippedAssertions.contains(a.getAssertion())));
}
private String selectIndividualWithEnoughProperties() {
for (String individual : generatedData.individuals) {
if (generatedData.values.get(individual).keySet().size() > Constants.DEFAULT_LOAD_ALL_THRESHOLD) {
return individual;
}
}
fail("Individual with sufficient number of assertions not found.");
return null;
}
@Test
void loadsAllAxiomsWhenUnspecifiedPropertyIsUsedInDescriptor() throws Exception {
connector.begin();
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(Assertion.createUnspecifiedPropertyAssertion(false));
// Add some random assertions. They are not that important, because the unspecified property will cover everything
generatedData.values.get(individual).keySet().stream().filter(a -> Generator.randomBoolean())
.forEach(desc::addAssertion);
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
assertEquals(generatedData.getTotalValueCount(individual), res.size());
}
@Test
void loadAxiomsSearchesInContextWhenItIsSpecifiedForAssertion() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion property = generatedData.values.get(individual).keySet().iterator().next();
final String context = "http://krizik.felk.cvut.cz/contextOne";
final Object value = saveValueIntoContext(individual, property, context);
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(property);
desc.setAssertionContext(property, URI.create(context));
connector.begin();
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
assertEquals(1, res.size());
final Axiom<?> a = res.iterator().next();
assertEquals(property, a.getAssertion());
assertEquals(value.toString(), a.getValue().getValue().toString());
}
private Object saveValueIntoContext(String individual, Assertion property, String context) throws Exception {
final RepositoryConnection conn = connector.unwrap(Repository.class).getConnection();
conn.begin();
final Object value;
if (property.getType() == Assertion.AssertionType.DATA_PROPERTY) {
value = new Date();
conn.add(vf.createIRI(individual), vf.createIRI(property.getIdentifier().toString()),
vf.createLiteral((Date) value), vf.createIRI(context));
} else {
value = NamedResource.create("http://krizik.felk.cvut.cz/individualInContext" + Generator.randomInt());
conn.add(vf.createIRI(individual), vf.createIRI(property.getIdentifier().toString()),
vf.createIRI(value.toString()), vf.createIRI(context));
}
conn.commit();
conn.close();
return value;
}
@Test
void loadAxiomsLoadsValuesFromContextAndNotFromDefaultWhenContextIsSpecifiedForAssertion() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion property = generatedData.values.get(individual).keySet().iterator().next();
final String context = "http://krizik.felk.cvut.cz/contextOne";
final Object value = saveValueIntoContext(individual, property, context);
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(property);
desc.setAssertionContext(property, URI.create(context));
final Set<Assertion> assertions = generatedData.values.get(individual).keySet();
assertions.stream().filter(a -> !a.equals(property)).forEach(desc::addAssertion);
connector.begin();
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
int valueCount = 1; // The value in context
for (Assertion a : desc.getAssertions()) {
if (!a.equals(property)) {
valueCount += generatedData.values.get(individual).get(a).size();
}
}
assertEquals(valueCount, res.size());
for (Axiom<?> a : res) {
assertTrue(assertions.contains(a.getAssertion()));
if (a.getAssertion().equals(property)) {
assertEquals(value, a.getValue().getValue());
}
}
}
@Test
void loadAxiomsCombinesUnspecifiedPropertyInDefaultWithPropertyInContext() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion property = generatedData.values.get(individual).keySet().iterator().next();
final String context = "http://krizik.felk.cvut.cz/contextOne";
Object value = saveValueIntoContext(individual, property, context);
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(property);
desc.setAssertionContext(property, URI.create(context));
final Assertion unspecified = Assertion.createUnspecifiedPropertyAssertion(false);
desc.addAssertion(unspecified);
connector.begin();
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
assertEquals(generatedData.getTotalValueCount(individual) + 1, res.size());
final Optional<Axiom<?>> found = res.stream().filter(a ->
a.getAssertion().equals(property) && a.getValue().getValue().equals(value)).findFirst();
assertTrue(found.isPresent());
}
@Test
void loadAxiomsCombinesPropertiesInDefaultAndUnspecifiedPropertyInContext() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion property = generatedData.values.get(individual).keySet().iterator().next();
final Assertion propertyInCtx = Assertion
.createDataPropertyAssertion(URI.create("http://krizik.felk.cvut.cz/propertyInCtx"), false);
final String context = "http://krizik.felk.cvut.cz/contextOne";
int ctxCount = Generator.randomPositiveInt(10);
final Set<Object> contextValues = new HashSet<>();
for (int i = 0; i < ctxCount; i++) {
contextValues.add(saveValueIntoContext(individual, propertyInCtx, context));
}
final AxiomDescriptor desc = new AxiomDescriptor(NamedResource.create(individual));
desc.addAssertion(property);
desc.addAssertion(Assertion.createUnspecifiedPropertyAssertion(false));
desc.setAssertionContext(Assertion.createUnspecifiedPropertyAssertion(false), URI.create(context));
connector.begin();
final Collection<Axiom<?>> res = axiomLoader.loadAxioms(desc);
assertEquals(contextValues.size() + generatedData.values.get(individual).get(property).size(), res.size());
for (Axiom<?> ax : res) {
if (ax.getAssertion().equals(property)) {
assertTrue(generatedData.values.get(individual).get(property).contains(ax.getValue().getValue()));
} else {
assertEquals(propertyInCtx.getIdentifier(), ax.getAssertion().getIdentifier());
assertEquals(propertyInCtx.isInferred(), ax.getAssertion().isInferred());
assertTrue(contextValues.contains(ax.getValue().getValue()));
}
}
}
@Test
void loadAxiomsSkipsPropertyValueOfInvalidType_OP() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion a = Assertion
.createObjectPropertyAssertion(URI.create("http://krizik.felk.cvut.cz/objectProperty"), false);
final RepositoryConnection conn = connector.unwrap(Repository.class).getConnection();
conn.begin();
conn.add(vf.createIRI(individual), vf.createIRI(a.getIdentifier().toString()), vf.createLiteral(false));
conn.commit();
conn.close();
connector.begin();
final AxiomDescriptor descOne = new AxiomDescriptor(NamedResource.create(individual));
descOne.addAssertion(a);
assertTrue(axiomLoader.loadAxioms(descOne).isEmpty());
final AxiomDescriptor descTwo = new AxiomDescriptor(NamedResource.create(individual));
descTwo.addAssertion(Assertion.createDataPropertyAssertion(a.getIdentifier(), false));
assertFalse(axiomLoader.loadAxioms(descTwo).isEmpty());
}
@Test
void loadAxiomsSkipsPropertyValueOfInvalidType_DP() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final Assertion a = Assertion
.createDataPropertyAssertion(URI.create("http://krizik.felk.cvut.cz/dataProperty"), false);
final RepositoryConnection conn = connector.unwrap(Repository.class).getConnection();
conn.begin();
conn.add(vf.createIRI(individual), vf.createIRI(a.getIdentifier().toString()),
vf.createIRI("http://krizik.felk.cvut.cz/individual"));
conn.commit();
conn.close();
connector.begin();
final AxiomDescriptor descOne = new AxiomDescriptor(NamedResource.create(individual));
descOne.addAssertion(a);
assertTrue(axiomLoader.loadAxioms(descOne).isEmpty());
final AxiomDescriptor descTwo = new AxiomDescriptor(NamedResource.create(individual));
descTwo.addAssertion(Assertion.createObjectPropertyAssertion(a.getIdentifier(), false));
assertFalse(axiomLoader.loadAxioms(descTwo).isEmpty());
}
@Test
void loadAxiomsLoadsStringLiteralWithCorrectLanguage() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
persistLanguageTaggedStrings(individual);
connector.begin();
final AxiomDescriptor descriptor = new AxiomDescriptor(NamedResource.create(individual));
// Language is en
descriptor
.addAssertion(
Assertion.createAnnotationPropertyAssertion(URI.create(RDFS.LABEL.stringValue()), "en", false));
final Collection<Axiom<?>> axioms = axiomLoader.loadAxioms(descriptor);
assertEquals(1, axioms.size());
final Axiom<?> ax = axioms.iterator().next();
assertEquals("a", ax.getValue().getValue());
}
private void persistLanguageTaggedStrings(String individual) throws OntoDriverException {
final RepositoryConnection conn = connector.unwrap(Repository.class).getConnection();
conn.begin();
conn.add(vf.createStatement(vf.createIRI(individual), RDFS.LABEL, vf.createLiteral("a", "en")));
conn.add(vf.createStatement(vf.createIRI(individual), RDFS.LABEL, vf.createLiteral("b", "cs")));
conn.commit();
conn.close();
}
@Test
void loadAxiomsLoadsStringLiteralWithCorrectLanguageForUnspecifiedPropertyType() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
persistLanguageTaggedStrings(individual);
connector.begin();
final AxiomDescriptor descriptor = new AxiomDescriptor(NamedResource.create(individual));
// Language is en
descriptor.addAssertion(Assertion.createPropertyAssertion(URI.create(RDFS.LABEL.stringValue()), "en", false));
final Collection<Axiom<?>> axioms = axiomLoader.loadAxioms(descriptor);
assertEquals(1, axioms.size());
final Axiom<?> ax = axioms.iterator().next();
assertEquals("a", ax.getValue().getValue());
}
@Test
void loadsStringLiteralWithCorrectLanguageTagWhenItIsSpecifiedInAssertion() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
persistLanguageTaggedStrings(individual);
connector.begin();
final AxiomDescriptor descriptor = new AxiomDescriptor(NamedResource.create(individual));
final Assertion assertion =
Assertion.createDataPropertyAssertion(URI.create(RDFS.LABEL.stringValue()), "cs", false);
descriptor.addAssertion(assertion);
final Collection<Axiom<?>> axioms = axiomLoader.loadAxioms(descriptor);
assertEquals(1, axioms.size());
final Axiom<?> ax = axioms.iterator().next();
assertEquals("b", ax.getValue().getValue());
}
@Test
void loadsStringLiteralWithCorrectLanguageTagWhenItIsSpecifiedInAssertionOfUnspecifiedProperty() throws
Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
persistLanguageTaggedStrings(individual);
connector.begin();
final AxiomDescriptor descriptor = new AxiomDescriptor(NamedResource.create(individual));
final Assertion assertion =
Assertion.createPropertyAssertion(URI.create(RDFS.LABEL.stringValue()), "cs", false);
descriptor.addAssertion(assertion);
final Collection<Axiom<?>> axioms = axiomLoader.loadAxioms(descriptor);
assertEquals(1, axioms.size());
final Axiom<?> ax = axioms.iterator().next();
assertEquals("b", ax.getValue().getValue());
}
@Test
void loadsStringLiteralWithAllLanguagesWhenLanguageTagIsExplicitlySetToNull() throws Exception {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
persistLanguageTaggedStrings(individual);
connector.begin();
final AxiomDescriptor descriptor = new AxiomDescriptor(NamedResource.create(individual));
final Assertion assertion =
Assertion.createDataPropertyAssertion(URI.create(RDFS.LABEL.stringValue()), null, false);
descriptor.addAssertion(assertion);
final Collection<Axiom<?>> axioms = axiomLoader.loadAxioms(descriptor);
assertEquals(2, axioms.size());
final Set<String> values = axioms.stream().map(ax -> ax.getValue().stringValue()).collect(Collectors.toSet());
assertTrue(values.contains("a"));
assertTrue(values.contains("b"));
}
@Test
void loadAxiomsUsesSingleCallWhenLoadAllThresholdIsSetToLessThanAssertionCount() throws Exception {
final DriverConfiguration driverConfig = new DriverConfiguration(TestRepositoryProvider.storageProperties());
driverConfig.setProperty(SesameConfigParam.LOAD_ALL_THRESHOLD, Integer.toString(1));
final Connector spiedConnector = spy(connector);
this.axiomLoader = new AxiomLoader(spiedConnector, vf, new RuntimeConfiguration(driverConfig));
spiedConnector.begin();
try {
final String individual = generatedData.individuals.get(Generator.randomIndex(generatedData.individuals));
final AxiomDescriptor descriptor = new AxiomDescriptor(NamedResource.create(individual));
final Iterator<Assertion> it = generatedData.values.get(individual).keySet().iterator();
descriptor.addAssertion(it.next());
descriptor.addAssertion(it.next());
axiomLoader.loadAxioms(descriptor);
verify(spiedConnector).findStatements(vf.createIRI(individual), null, null, false);
} finally {
spiedConnector.close();
}
}
}