private void addEntailedKBSuccessors(OWLObjectSomeValuesFrom some) {
TRACKER.start(StaticValues.TIME_KB_SUCCESSORS, BlockOutputMode.COMPLETE, true);
// add all role-successors entailed by the TBox
addEntailedTBoxSuccessors(some, m_normalize); // for KB mode only normalize TBox contained roles
DomainNode<?> toNode = getDomainElement(some.getFiller());
OWLClass someClass = m_ontologyOperator.getFlatteningTransformer().getIntermediary(some);
long start = System.currentTimeMillis();
// StatStore.getInstance().enterValue("instance accessing", 1.0);
NodeSet<OWLNamedIndividual> instances =
m_ontologyOperator.getReasoner().getInstances(someClass, false);
sum += System.currentTimeMillis() - start;
// NodeSet<OWLNamedIndividual> instances =
// m_ontologyOperator.getReasoner().getInstances(getClassRepresentation(some), false);
// LOG.fine(" creating successors to " + some + " from instances: " + instances.toString());
Iterator<Node<OWLNamedIndividual>> it1 = instances.iterator();
while (it1.hasNext()) {
Iterator<OWLNamedIndividual> it2 = it1.next().iterator();
while (it2.hasNext()) {
DomainNode<?> from = m_domain.getDomainNode(it2.next());
if (from != null) {
// if(!isSuccessorRepresented(from, getDomainElement(some.getFiller()),
// (OWLObjectProperty)some.getProperty())){
from.addSuccessor((OWLObjectProperty) some.getProperty(), toNode);
// }
}
}
}
TRACKER.stop(StaticValues.TIME_KB_SUCCESSORS);
}
protected OWLClass getFreshQueryClass(String base) {
long cnt = 0;
String iriString = base;
while (m_ontologyOperator.getOntology().containsClassInSignature(IRI.create(iriString))) {
iriString =
base + (cnt++); // not guaranteed to succeed.. however |long| amount of possibilities
}
return OWLManager.getOWLDataFactory().getOWLClass(IRI.create(iriString));
}
public OWLClass getClassRepresentation(OWLClassExpression ex) {
if (ex != null
&& ex.equals(
m_referenceExpression)) // before OWLClass check, in case referenceExpression is also a
// class
return m_referenceClass;
if (ex instanceof OWLClass) {
return (OWLClass) ex;
}
return m_ontologyOperator.getFlatteningTransformer().getIntermediary(ex);
}
protected void insertQueryAxiom(OWLClass queryClass) {
// Main.getOntologyManager().addAxiom(m_ontologyOperator.getOntology(),
// OWLManager.getOWLDataFactory().getOWLEquivalentClassesAxiom(queryClass,
// m_referenceExpression));
m_ontologyOperator
.getOntology()
.getOWLOntologyManager()
.addAxiom(
m_ontologyOperator.getOntology(),
// OWLManager.getOWLDataFactory().getOWLEquivalentClassesAxiom(
OWLManager.getOWLDataFactory()
.getOWLSubClassOfAxiom(
queryClass,
m_referenceExpression.accept(
m_ontologyOperator.getFlatteningTransformer().getVisitor())));
m_ontologyOperator
.getOntology()
.getOWLOntologyManager()
.applyChanges(m_ontologyOperator.getFlatteningTransformer().getVisitor().getChanges());
m_ontologyOperator.getFlatteningTransformer().getVisitor().resetChangeList();
m_ontologyOperator.ontologyChanged();
}
@Override
public CanonicalInterpretation generate(OWLOntology ontology) {
CanonicalInterpretation canonInterpretation = new CanonicalInterpretation();
m_domain = new CanonicalDomain();
canonInterpretation.initDomain(m_domain);
m_ontologyOperator = OntologyOperator.getOntologyOperator(ontology);
IDomainElementGenerator elemGen;
if (isKBMode()) {
elemGen = new KBDomainElementGenerator();
} else {
elemGen = new TBoxDomainElementGenerator();
}
if (!isKBMode()) { // TBox + Query mode
// define class Q as equivalence to the reference expression (query)
m_referenceClass = getFreshQueryClass("Q");
insertQueryAxiom(m_referenceClass);
((TBoxDomainElementGenerator) elemGen).registerConcept(m_referenceClass);
}
OWLAxiomFlatteningTransformer exRestStore =
m_ontologyOperator.getFlatteningTransformer(); // flattens here
m_ontologyOperator.getReasoner(isKBMode()); // precomputes inferences
// the element generator creates all necessary domain elements and adds their instantiators
elemGen.generate(this, m_keepSmall);
LOG.info("a total of " + m_classAssociations.size() + " classes are mapped to individuals");
TRACKER.start(StaticValues.TIME_DOMAIN_SUCCESSORS);
if (!isKBMode()) { // TBox + Query mode
// add all successor relations by iterating all known existential restrictions
for (OWLObjectSomeValuesFrom some : exRestStore.getRestrictions()) {
addEntailedTBoxSuccessors(some, m_normalize);
}
} else { // KB mode (ABox + TBox)
// add all ABox property assertion successors
for (OWLAxiom ax : m_ontologyOperator.getOntology().getABoxAxioms(true)) {
if (ax instanceof OWLObjectPropertyAssertionAxiom) {
// LOG.fine("Adding role assertion successor: " + ax);
OWLObjectPropertyAssertionAxiom pAx = (OWLObjectPropertyAssertionAxiom) ax;
getDomainElement(pAx.getSubject())
.addSuccessor(
(OWLObjectProperty) pAx.getProperty(), getDomainElement(pAx.getObject()));
}
}
// add all successor relations by iterating all known existential restrictions
int exR = 1;
for (OWLObjectSomeValuesFrom some :
m_ontologyOperator.getFlatteningTransformer().getRestrictions()) {
if (exR % 1000 == 0) {
System.out.println(exR + " restrictions handled");
}
addEntailedKBSuccessors(some);
exR++;
}
LOG.info("TOTAL TIME FOR INSTANCE RETRIEVAL: " + sum + " ms");
// normalize later
// if(m_normalize){ startSimulationComputation(); }
}
TRACKER.stop(StaticValues.TIME_DOMAIN_SUCCESSORS);
/* ************* TEST SPECIFIC STUFF ************** */
// LOG.info("Start checking for useless domain nodes ...");
// Map<OWLClassExpression, DomainNode<OWLClassExpression>> conceptDomainNodes =
// canonInterpretation.getDomain().getConceptElements();
// Set<DomainNode<OWLClassExpression>> noPredecessors = new
// HashSet<DomainNode<OWLClassExpression>>();
// noPredecessors.addAll(conceptDomainNodes.values());
// for(OWLClassExpression ce : conceptDomainNodes.keySet()){
// for(OWLObjectProperty r : conceptDomainNodes.get(ce).getSuccessorRoles()){
// noPredecessors.removeAll(conceptDomainNodes.get(ce).getSuccessors(r));
// }
//
// NodeSet<OWLClass> subClasses =
// m_ontologyOperator.getReasoner().getSubClasses(ce.asOWLClass(), false);
// Node<OWLClass> eqClasses =
// m_ontologyOperator.getReasoner().getEquivalentClasses(ce.asOWLClass());
// for(OWLClassExpression ce2 : conceptDomainNodes.keySet()){
// if(!ce.equals(ce2)){
// if(subClasses.containsEntity(ce2.asOWLClass())){
// LOG.info("Domain node " + conceptDomainNodes.get(ce2) + " represents something more
// specific than " + conceptDomainNodes.get(ce));
// }else if(eqClasses.contains(ce2.asOWLClass())){
// LOG.info("Domain node " + conceptDomainNodes.get(ce2) + " is equivalent to " +
// conceptDomainNodes.get(ce));
// }
// }
// }
// }
// for(DomainNode<OWLClassExpression> d : noPredecessors){
// LOG.info(d + " does not have any predecessors.");
// if(d.getSuccessorObjects().isEmpty())
// LOG.info(d + " is not connected to the model at all!");
// }
/* ************ END TEST ***************** */
return canonInterpretation;
}
public boolean isRestrictedInstantiator(OWLClass c) {
return c == null
|| c.isTopEntity()
|| m_ontologyOperator.getFlatteningTransformer().isIntermediary(c)
|| c.equals(m_referenceClass);
}
private void addEntailedTBoxSuccessors(OWLObjectSomeValuesFrom some, boolean doNormalizing) {
// StatStore.getInstance().enterValue("lookup " + some.getFiller(), 1.0);
// StatStore.getInstance().enterValue("restrictions handled", 1.0);
TRACKER.start(StaticValues.TIME_TBOX_SUCCESSORS, BlockOutputMode.COMPLETE, true);
// TRACKER.start("fetch domain element and intermediary", BlockOutputMode.COMPLETE, true);
DomainNode<?> toNode = getDomainElement(some.getFiller());
// the super class, intermediary stands for (some r B)
OWLClass superClass = m_ontologyOperator.getFlatteningTransformer().getIntermediary(some);
// TRACKER.stop("fetch domain element and intermediary");
// add successors from all
// TRACKER.start("query elk", BlockOutputMode.COMPLETE, true);
// StatStore.getInstance().enterValue("subclass accessing", 1.0);
NodeSet<OWLClass> classes = m_ontologyOperator.getReasoner().getSubClasses(superClass, false);
// fill current class relations from Id
// StatStore.getInstance().enterValue("subclass accessing", 1.0);
currentIdSubClasses = m_ontologyOperator.getReasoner().getSubClasses(some.getFiller(), false);
// StatStore.getInstance().enterValue("superclass accessing", 1.0);
currentIdSuperClasses =
m_ontologyOperator.getReasoner().getSuperClasses(some.getFiller(), false);
// StatStore.getInstance().enterValue("equivalent classes accessing", 1.0);
currentIdEqClasses = m_ontologyOperator.getReasoner().getEquivalentClasses(some.getFiller());
// TRACKER.stop("query elk");
// LOG.fine(" creating successors to " + some + ": " + classes.toString());
Iterator<Node<OWLClass>> nodeIt = classes.iterator();
while (nodeIt.hasNext()) {
Iterator<OWLClass> it = nodeIt.next().iterator();
while (it.hasNext()) {
DomainNode<?> node = m_domain.getDomainNode(it.next());
// if it.next() yields no domain node, there exists an ABox identity for it
// and this case is covered by addEntailedKBSuccessors
if (node != null) {
if (doNormalizing) {
// if(!isSuccessorRepresented(node, (OWLObjectProperty)some.getProperty(),
// some.getFiller())){
TRACKER.start("normalizing and adding", BlockOutputMode.COMPLETE, true);
if (!isSuccessorRepresented(node, toNode, (OWLObjectProperty) some.getProperty())) {
removeIncludedSuccessors(
(OWLObjectProperty) some.getProperty(), node, some.getFiller());
node.addSuccessor((OWLObjectProperty) some.getProperty(), toNode);
}
TRACKER.stop("normalizing and adding");
} else {
node.addSuccessor((OWLObjectProperty) some.getProperty(), toNode);
}
}
}
}
// add all equivalent class successors
// TRACKER.start("query elk", BlockOutputMode.COMPLETE, true);
Iterator<OWLClass> cIt =
m_ontologyOperator.getReasoner().getEquivalentClasses(superClass).iterator();
// TRACKER.stop("query elk");
while (cIt.hasNext()) {
DomainNode<?> node = m_domain.getDomainNode(cIt.next());
if (node != null) {
if (doNormalizing) {
// if(!isSuccessorRepresented(node, (OWLObjectProperty)some.getProperty(),
// some.getFiller())){
TRACKER.start("normalizing and adding", BlockOutputMode.COMPLETE, true);
if (!isSuccessorRepresented(node, toNode, (OWLObjectProperty) some.getProperty())) {
removeIncludedSuccessors(
(OWLObjectProperty) some.getProperty(), node, some.getFiller());
node.addSuccessor((OWLObjectProperty) some.getProperty(), toNode);
}
TRACKER.stop("normalizing and adding");
} else {
node.addSuccessor((OWLObjectProperty) some.getProperty(), toNode);
}
}
}
TRACKER.stop(StaticValues.TIME_TBOX_SUCCESSORS);
}
