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JenaDataAccessor.java
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JenaDataAccessor.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.jopa.test.environment;
import cz.cvut.kbss.jopa.model.EntityManager;
import cz.cvut.kbss.ontodriver.jena.connector.StorageConnector;
import org.apache.jena.query.Dataset;
import org.apache.jena.rdf.model.*;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import static org.apache.jena.rdf.model.ResourceFactory.*;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class JenaDataAccessor implements DataAccessor {
@Override
public void persistTestData(Collection<Quad> data, EntityManager em) throws Exception {
final StorageConnector ds = em.unwrap(StorageConnector.class);
ds.begin();
final List<Statement> toAdd = new ArrayList<>(data.size());
for (Quad t : data) {
final Resource subject = createResource(t.getSubject().toString());
final Property property = createProperty(t.getProperty().toString());
final RDFNode value = toValue(t.getValue(), t.getLanguage());
ds.add(Collections.singletonList(createStatement(subject, property, value)),
t.getContext() != null ? t.getContext().toString() : null);
}
ds.add(toAdd, null);
ds.commit();
}
private RDFNode toValue(Object value, String language) {
return value instanceof URI ? createResource(value.toString()) :
(value instanceof String ? ResourceFactory.createLangLiteral(value.toString(), language) :
ResourceFactory.createTypedLiteral(value));
}
@Override
public void verifyDataPresent(Collection<Quad> expected, EntityManager em) {
final Dataset ds = em.unwrap(Dataset.class);
expected.forEach(t -> assertTrue(doesQuadExist(t,
t.getContext() == null ? ds.getDefaultModel() : ds.getNamedModel(t.getContext().toString()))));
}
private boolean doesQuadExist(Quad quad, Model model) {
return model.contains(createResource(quad.getSubject().toString()),
createProperty(quad.getProperty().toString()), toValue(quad.getValue(), quad.getLanguage()));
}
@Override
public void verifyDataNotPresent(Collection<Quad> data, EntityManager em) {
final Dataset ds = em.unwrap(Dataset.class);
data.forEach(t -> assertFalse(doesQuadExist(t,
t.getContext() == null ? ds.getDefaultModel() : ds.getNamedModel(t.getContext().toString()))));
}
}