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AxiomSaver.java
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AxiomSaver.java
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/**
* Copyright (C) 2016 Czech Technical University in Prague
*
* 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.
*
* 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.owlapi;
import cz.cvut.kbss.ontodriver.owlapi.connector.OntologySnapshot;
import cz.cvut.kbss.ontodriver.owlapi.util.MutableAddAxiom;
import cz.cvut.kbss.ontodriver.descriptor.AxiomValueDescriptor;
import cz.cvut.kbss.ontodriver.model.Assertion;
import cz.cvut.kbss.ontodriver.model.AxiomImpl;
import cz.cvut.kbss.ontodriver.model.NamedResource;
import cz.cvut.kbss.ontodriver.model.Value;
import org.semanticweb.owlapi.model.IRI;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLOntologyChange;
import java.net.URI;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Persists axioms into the ontology snapshot.
*/
class AxiomSaver {
private final OwlapiAdapter adapter;
private final OWLOntology ontology;
private final OntologySnapshot snapshot;
private final AxiomAdapter axiomAdapter;
AxiomSaver(OwlapiAdapter adapter, OntologySnapshot snapshot) {
this.adapter = adapter;
this.snapshot = snapshot;
this.ontology = snapshot.getOntology();
this.axiomAdapter = new AxiomAdapter(snapshot.getDataFactory(), adapter.getLanguage());
}
void persist(AxiomValueDescriptor descriptor) {
for (Assertion assertion : descriptor.getAssertions()) {
switch (assertion.getType()) {
case CLASS:
persistTypes(descriptor.getSubject(), descriptor.getAssertionValues(assertion));
break;
case DATA_PROPERTY:
persistDataPropertyValues(descriptor.getSubject(), assertion,
descriptor.getAssertionValues(assertion));
break;
case ANNOTATION_PROPERTY:
persistAnnotationPropertyValues(descriptor.getSubject(), assertion,
descriptor.getAssertionValues(assertion));
break;
case OBJECT_PROPERTY:
persistObjectPropertyValues(descriptor.getSubject(), assertion,
descriptor.getAssertionValues(assertion));
break;
case PROPERTY:
persistPropertyValues(descriptor.getSubject(), assertion, descriptor.getAssertionValues(assertion));
break;
}
}
}
private void persistTypes(NamedResource subject, List<Value<?>> types) {
final Set<URI> classes = types.stream().map(val -> {
if (val.getValue() instanceof URI) {
return (URI) val.getValue();
} else {
return URI.create(val.stringValue());
}
}).collect(Collectors.toSet());
adapter.getTypesHandler().addTypes(subject, null, classes);
}
private void persistDataPropertyValues(NamedResource subject, Assertion assertion, Collection<Value<?>> values) {
final List<OWLAxiom> axioms = values.stream().filter(value -> value != Value.nullValue())
.map(value -> axiomAdapter.toOwlDataPropertyAssertionAxiom(
new AxiomImpl<>(subject, assertion, value)))
.collect(Collectors.toList());
addAxioms(axioms);
}
private void addAxioms(List<? extends OWLAxiom> axioms) {
if (axioms.isEmpty()) {
return;
}
final List<OWLOntologyChange> changes = axioms.stream().map(axiom -> new MutableAddAxiom(ontology, axiom))
.collect(Collectors.toList());
adapter.addTransactionalChanges(snapshot.applyChanges(changes));
}
private void persistAnnotationPropertyValues(NamedResource subject, Assertion assertion,
Collection<Value<?>> values) {
final List<OWLAxiom> axioms = values.stream().filter(value -> value != Value.nullValue())
.map(value -> axiomAdapter.toOwlAnnotationPropertyAssertionAxiom(
new AxiomImpl<>(subject, assertion, value)))
.collect(Collectors.toList());
addAxioms(axioms);
}
private void persistObjectPropertyValues(NamedResource subject, Assertion assertion, Collection<Value<?>> values) {
final List<OWLAxiom> axioms = values.stream().filter(value -> value != Value.nullValue())
.map(value -> {
// Simplistic version using value.stringValue
// We expect the value to be a NamedResource, but in case the property was unspecified and it was only assumed
// it is an object property (see #persistPropertyValues), the value would be a simple string
return axiomAdapter.toOwlObjectPropertyAssertionAxiom(
new AxiomImpl<>(subject, assertion, value));
}).collect(Collectors.toList());
addAxioms(axioms);
}
private void persistPropertyValues(NamedResource subject, Assertion assertion, Collection<Value<?>> values) {
final IRI property = IRI.create(assertion.getIdentifier());
if (ontology.containsDataPropertyInSignature(property)) {
persistDataPropertyValues(subject, assertion, values);
} else if (ontology.containsAnnotationPropertyInSignature(property)) {
persistAnnotationPropertyValues(subject, assertion, values);
} else {
// The property is: 1) known to be an object property, 2) unknown, we just try object property
persistObjectPropertyValues(subject, assertion, values);
}
}
void persistAxioms(NamedResource subject, Map<Assertion, Set<Value<?>>> properties) {
for (Map.Entry<Assertion, Set<Value<?>>> e : properties.entrySet()) {
persistPropertyValues(subject, e.getKey(), e.getValue());
}
}
}