public OWLOntology loadOWLOntology(
OWLOntologyDocumentSource documentSource, final OWLOntologyCreationHandler mediator)
throws OWLOntologyCreationException {
// Attempt to parse the ontology by looping through the parsers. If the
// ontology is parsed successfully then we break out and return the ontology.
// I think that this is more reliable than selecting a parser based on a file extension
// for example (perhaps the parser list could be ordered based on most likely parser, which
// could be determined by file extension).
Map<OWLParser, OWLParserException> exceptions =
new LinkedHashMap<OWLParser, OWLParserException>();
// Call the super method to create the ontology - this is needed, because
// we throw an exception if someone tries to create an ontology directly
OWLOntology existingOntology = null;
IRI iri = documentSource.getDocumentIRI();
if (getOWLOntologyManager().contains(iri)) {
existingOntology = getOWLOntologyManager().getOntology(iri);
}
OWLOntologyID ontologyID = new OWLOntologyID();
OWLOntology ont =
super.createOWLOntology(ontologyID, documentSource.getDocumentIRI(), mediator);
// Now parse the input into the empty ontology that we created
for (final OWLParser parser : getParsers()) {
try {
if (existingOntology == null && !ont.isEmpty()) {
// Junk from a previous parse. We should clear the ont
getOWLOntologyManager().removeOntology(ont);
ont = super.createOWLOntology(ontologyID, documentSource.getDocumentIRI(), mediator);
}
OWLOntologyFormat format = parser.parse(documentSource, ont);
mediator.setOntologyFormat(ont, format);
return ont;
} catch (IOException e) {
// No hope of any parsers working?
// First clean up
getOWLOntologyManager().removeOntology(ont);
throw new OWLOntologyCreationIOException(e);
} catch (UnloadableImportException e) {
// First clean up
getOWLOntologyManager().removeOntology(ont);
throw e;
} catch (OWLParserException e) {
// Record this attempts and continue trying to parse.
exceptions.put(parser, e);
} catch (RuntimeException e) {
// Clean up and rethrow
getOWLOntologyManager().removeOntology(ont);
throw e;
}
}
if (existingOntology == null) {
getOWLOntologyManager().removeOntology(ont);
}
// We haven't found a parser that could parse the ontology properly. Throw an
// exception whose message contains the stack traces from all of the parsers
// that we have tried.
throw new UnparsableOntologyException(documentSource.getDocumentIRI(), exceptions);
}
private OWLOntology relevantPart(QueryRecord queryRecord) {
AnswerTuples rlAnswer = null, elAnswer = null;
t.reset();
try {
rlAnswer =
rlLowerStore.evaluate(queryRecord.getQueryText(), queryRecord.getAnswerVariables());
Utility.logDebug(t.duration());
queryRecord.updateLowerBoundAnswers(rlAnswer);
} finally {
if (rlAnswer != null) rlAnswer.dispose();
}
queryRecord.addProcessingTime(Step.LowerBound, t.duration());
rlAnswer = null;
t.reset();
BasicQueryEngine upperStore =
queryRecord.isBottom() || lazyUpperStore == null ? trackingStore : lazyUpperStore;
String[] extendedQuery = queryRecord.getExtendedQueryText();
queryUpperBound(
upperStore, queryRecord, queryRecord.getQueryText(), queryRecord.getAnswerVariables());
if (!queryRecord.processed() && !queryRecord.getQueryText().equals(extendedQuery[0]))
queryUpperBound(upperStore, queryRecord, extendedQuery[0], queryRecord.getAnswerVariables());
if (!queryRecord.processed() && queryRecord.hasNonAnsDistinguishedVariables())
queryUpperBound(
upperStore, queryRecord, extendedQuery[1], queryRecord.getDistinguishedVariables());
queryRecord.addProcessingTime(Step.UpperBound, t.duration());
if (queryRecord.processed()) {
queryRecord.setDifficulty(Step.UpperBound);
return null;
}
t.reset();
try {
elAnswer =
elLowerStore.evaluate(
extendedQuery[0],
queryRecord.getAnswerVariables(),
queryRecord.getLowerBoundAnswers());
Utility.logDebug(t.duration());
queryRecord.updateLowerBoundAnswers(elAnswer);
} finally {
if (elAnswer != null) elAnswer.dispose();
}
queryRecord.addProcessingTime(Step.ELLowerBound, t.duration());
if (queryRecord.processed()) {
queryRecord.setDifficulty(Step.ELLowerBound);
return null;
}
t.reset();
QueryTracker tracker = new QueryTracker(encoder, rlLowerStore, queryRecord);
OWLOntology knowledgebase;
t.reset();
// if (program.getGeneral().isHorn()) {
// knowledgebase = tracker.extract(lazyUpperStore, consistency.getQueryRecords(), true);
// queryRecord.addProcessingTime(Step.Fragment, t.duration());
// return knowledgebase;
// }
// else {
knowledgebase = tracker.extract(trackingStore, consistency.getQueryRecords(), true);
queryRecord.addProcessingTime(Step.Fragment, t.duration());
// }
if (knowledgebase.isEmpty() || queryRecord.isBottom()) return knowledgebase;
if (program.getGeneral().isHorn()) return knowledgebase;
// t.reset();
// if (queryRecord.isHorn() && lazyUpperStore != null) {
//// knowledgebase = tracker.extract(lazyUpperStore, consistency.getQueryRecords(), true);
// } else if (queryRecord.getArity() < 3) {
// IterativeRefinement iterativeRefinement = new IterativeRefinement(queryRecord, tracker,
// trackingStore, consistency.getQueryRecords());
// knowledgebase = iterativeRefinement.extractWithFullABox(importedData.toString(),
// program.getUpperBottomStrategy());
// }
//
// queryRecord.addProcessingTime(Step.FragmentRefinement, t.duration());
//
// if (knowledgebase == null)
// queryRecord.setDifficulty(Step.FragmentRefinement);
return knowledgebase;
}
