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/* This file is part of the OWL API.
 * The contents of this file are subject to the LGPL License, Version 3.0.
 * Copyright 2014, The University of Manchester
 * 
 * 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/.
 *
 * Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0 in which case, the provisions of the Apache License Version 2.0 are applicable instead of those above.
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */
package uk.ac.manchester.cs.owl.owlapi;

import static org.semanticweb.owlapi.model.parameters.Imports.EXCLUDED;
import static org.semanticweb.owlapi.model.parameters.Imports.INCLUDED;
import static org.semanticweb.owlapi.util.CollectionFactory.createLinkedSet;
import static org.semanticweb.owlapi.util.CollectionFactory.createSet;
import static org.semanticweb.owlapi.util.OWLAPIPreconditions.checkNotNull;
import static org.semanticweb.owlapi.util.OWLAPIPreconditions.verifyNotNull;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

import org.semanticweb.owlapi.io.OWLOntologyDocumentTarget;
import org.semanticweb.owlapi.model.AxiomType;
import org.semanticweb.owlapi.model.EntityType;
import org.semanticweb.owlapi.model.IRI;
import org.semanticweb.owlapi.model.OWLAnnotation;
import org.semanticweb.owlapi.model.OWLAnnotationAssertionAxiom;
import org.semanticweb.owlapi.model.OWLAnnotationAxiom;
import org.semanticweb.owlapi.model.OWLAnnotationProperty;
import org.semanticweb.owlapi.model.OWLAnnotationPropertyDomainAxiom;
import org.semanticweb.owlapi.model.OWLAnnotationPropertyRangeAxiom;
import org.semanticweb.owlapi.model.OWLAnonymousIndividual;
import org.semanticweb.owlapi.model.OWLAxiom;
import org.semanticweb.owlapi.model.OWLClass;
import org.semanticweb.owlapi.model.OWLClassAssertionAxiom;
import org.semanticweb.owlapi.model.OWLClassAxiom;
import org.semanticweb.owlapi.model.OWLClassExpression;
import org.semanticweb.owlapi.model.OWLDataProperty;
import org.semanticweb.owlapi.model.OWLDataPropertyAssertionAxiom;
import org.semanticweb.owlapi.model.OWLDataPropertyAxiom;
import org.semanticweb.owlapi.model.OWLDatatype;
import org.semanticweb.owlapi.model.OWLDatatypeDefinitionAxiom;
import org.semanticweb.owlapi.model.OWLDocumentFormat;
import org.semanticweb.owlapi.model.OWLEntity;
import org.semanticweb.owlapi.model.OWLImportsDeclaration;
import org.semanticweb.owlapi.model.OWLIndividual;
import org.semanticweb.owlapi.model.OWLIndividualAxiom;
import org.semanticweb.owlapi.model.OWLLiteral;
import org.semanticweb.owlapi.model.OWLLogicalAxiom;
import org.semanticweb.owlapi.model.OWLNamedIndividual;
import org.semanticweb.owlapi.model.OWLNamedObjectVisitor;
import org.semanticweb.owlapi.model.OWLNamedObjectVisitorEx;
import org.semanticweb.owlapi.model.OWLObject;
import org.semanticweb.owlapi.model.OWLObjectProperty;
import org.semanticweb.owlapi.model.OWLObjectPropertyAxiom;
import org.semanticweb.owlapi.model.OWLObjectPropertyExpression;
import org.semanticweb.owlapi.model.OWLObjectVisitor;
import org.semanticweb.owlapi.model.OWLObjectVisitorEx;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLOntologyID;
import org.semanticweb.owlapi.model.OWLOntologyManager;
import org.semanticweb.owlapi.model.OWLOntologyStorageException;
import org.semanticweb.owlapi.model.OWLPrimitive;
import org.semanticweb.owlapi.model.OWLSubAnnotationPropertyOfAxiom;
import org.semanticweb.owlapi.model.parameters.AxiomAnnotations;
import org.semanticweb.owlapi.model.parameters.ConfigurationOptions;
import org.semanticweb.owlapi.model.parameters.Imports;
import org.semanticweb.owlapi.model.parameters.Navigation;
import org.semanticweb.owlapi.util.CollectionFactory;
import org.semanticweb.owlapi.util.OWLAxiomSearchFilter;
import org.semanticweb.owlapi.util.OWLObjectTypeIndexProvider;
import org.semanticweb.owlapi.vocab.OWL2Datatype;

import com.github.benmanes.caffeine.cache.CacheLoader;
import com.github.benmanes.caffeine.cache.Caffeine;
import com.github.benmanes.caffeine.cache.LoadingCache;

/**
 * @author Matthew Horridge, The University Of Manchester, Bio-Health Informatics Group
 * @since 2.0.0
 */
public class OWLImmutableOntologyImpl extends OWLAxiomIndexImpl
    implements OWLOntology, Serializable {

    private static final long serialVersionUID = 40000L;
    // @formatter:off
    protected static LoadingCache>          ontgenAxioms  =                    build(OWLImmutableOntologyImpl::buildGenAxioms);
    protected static LoadingCache>              ontsignatures =                    build(OWLImmutableOntologyImpl::build);
    protected static LoadingCache> ontanonCaches =                    build(key -> asCacheable(key.ints.get(OWLAnonymousIndividual.class, OWLAxiom.class).get().keySet()));
    protected static LoadingCache>              ontclassesSignatures =              build(key -> asCacheable(key.ints.get(OWLClass.class,               OWLAxiom.class).get().keySet()));
    protected static LoadingCache>       ontdataPropertySignatures =         build(key -> asCacheable(key.ints.get(OWLDataProperty.class,        OWLAxiom.class).get().keySet()));
    protected static LoadingCache>     ontobjectPropertySignatures =       build(key -> asCacheable(key.ints.get(OWLObjectProperty.class,      OWLAxiom.class).get().keySet()));
    protected static LoadingCache>           ontdatatypeSignatures =             build(key -> asCacheable(Stream.concat(
        key.ints.get(OWLDatatype.class, OWLAxiom.class).get().keySet().stream(), 
        key.ints.getOntologyAnnotations(false).stream().flatMap(x->x.getDatatypesInSignature().stream())).collect(Collectors.toSet())));
    protected static LoadingCache>    ontindividualSignatures =           build(key -> asCacheable(key.ints.get(OWLNamedIndividual.class,     OWLAxiom.class).get().keySet()));
    protected static LoadingCache> ontannotationPropertiesSignatures = build(key -> asCacheable(Stream.concat(
        key.ints.get(OWLAnnotationProperty.class, OWLAxiom.class, Navigation.IN_SUB_POSITION).get().keySet().stream(),
        key.ints.getOntologyAnnotations(false).stream().flatMap(a->a.getAnnotationPropertiesInSignature().stream())).collect(Collectors.toSet())));
    // @formatter:on
    static  LoadingCache build(CacheLoader c) {
        return Caffeine.newBuilder().weakKeys().maximumSize(size()).build(c);
    }

    protected static long size() {
        return ConfigurationOptions.CACHE_SIZE.getValue(Integer.class, Collections.emptyMap())
            .longValue();
    }

    protected static void invalidateOntologyCaches(OWLImmutableOntologyImpl o) {
        ontgenAxioms.invalidate(o);
        ontsignatures.invalidate(o);
        ontanonCaches.invalidate(o);
        ontclassesSignatures.invalidate(o);
        ontdataPropertySignatures.invalidate(o);
        ontobjectPropertySignatures.invalidate(o);
        ontdatatypeSignatures.invalidate(o);
        ontindividualSignatures.invalidate(o);
        ontannotationPropertiesSignatures.invalidate(o);
    }

    private static Set buildGenAxioms(OWLImmutableOntologyImpl key) {
        return new LinkedHashSet<>(key.ints.getGeneralClassAxioms());
    }

    private static Set build(OWLImmutableOntologyImpl key) {
        List stream = new ArrayList<>();
        key.classesInSignature().forEach(stream::add);
        key.objectPropertiesInSignature().forEach(stream::add);
        key.dataPropertiesInSignature().forEach(stream::add);
        key.individualsInSignature().forEach(stream::add);
        key.datatypesInSignature().forEach(stream::add);
        key.annotationPropertiesInSignature().forEach(stream::add);
        key.getAnnotations().stream().flatMap(x -> x.getSignature().stream()).forEach(stream::add);
        stream.sort(null);
        return new LinkedHashSet<>(stream);
    }

    @Nullable
    protected OWLOntologyManager manager;
    @Nonnull
    protected OWLOntologyID ontologyID;

    private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.writeObject(ontologyID);
        stream.writeObject(manager);
    }

    private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
        ontologyID = (OWLOntologyID) stream.readObject();
        manager = (OWLOntologyManager) stream.readObject();
    }

    @Override
    protected int index() {
        return OWLObjectTypeIndexProvider.ONTOLOGY;
    }

    /**
     * @param manager ontology manager
     * @param ontologyID ontology id
     */
    public OWLImmutableOntologyImpl(@Nonnull OWLOntologyManager manager,
        @Nonnull OWLOntologyID ontologyID) {
        this.manager = checkNotNull(manager, "manager cannot be null");
        this.ontologyID = checkNotNull(ontologyID, "ontologyID cannot be null");
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(1000);
        sb.append("Ontology(");
        sb.append(ontologyID);
        sb.append(") [Axioms: ");
        int axiomCount = ints.getAxiomCount();
        sb.append(axiomCount);
        sb.append(" Logical Axioms: ");
        sb.append(ints.getLogicalAxiomCount());
        sb.append("] First 20 axioms: {");
        sb.append(ints.getAxioms().stream().limit(20).map(Object::toString)
            .collect(Collectors.joining(" ")));
        sb.append('}');
        return sb.toString();
    }

    @Override
    public OWLOntologyManager getOWLOntologyManager() {
        OWLOntologyManager m = manager;
        if (m == null) {
            throw new IllegalStateException("Manager on ontology " + getOntologyID()
                + " is null; the ontology is no longer associated to a manager. Ensure the ontology is not being used after being removed from its manager.");
        }
        return verifyNotNull(m, "manager cannot be null at this stage");
    }

    @Override
    public void setOWLOntologyManager(OWLOntologyManager manager) {
        this.manager = manager;
    }

    @Override
    public OWLOntologyID getOntologyID() {
        return ontologyID;
    }

    @Override
    public boolean isAnonymous() {
        return ontologyID.isAnonymous();
    }

    @Override
    protected int compareObjectOfSameType(OWLObject object) {
        if (object == this) {
            return 0;
        }
        OWLOntology other = (OWLOntology) object;
        return ontologyID.compareTo(other.getOntologyID());
    }

    @Override
    public boolean isEmpty() {
        return ints.isEmpty();
    }

    @Override
    public  int getAxiomCount(AxiomType axiomType,
        boolean includeImportsClosure) {
        return getAxiomCount(axiomType, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public int getAxiomCount(boolean includeImportsClosure) {
        return getAxiomCount(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public  int getAxiomCount(AxiomType axiomType,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getAxiomCount(axiomType);
        }
        int result = 0;
        for (OWLOntology ont : getImportsClosure()) {
            result += ont.getAxiomCount(axiomType);
        }
        return result;
    }

    @Override
    public boolean containsAxiom(@Nonnull OWLAxiom axiom) {
        return Internals.contains(ints.getAxiomsByType(), axiom.getAxiomType(), axiom);
    }

    @Override
    public int getAxiomCount() {
        return getAxiomCount(EXCLUDED);
    }

    @Override
    public int getAxiomCount(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.getAxiomCount();
        }
        int total = 0;
        for (OWLOntology o : getImportsClosure()) {
            total += o.getAxiomCount();
        }
        return total;
    }

    @Override
    public Set getAxioms() {
        return getAxioms(EXCLUDED);
    }

    @Override
    public Set getAxioms(boolean b) {
        return getAxioms(Imports.fromBoolean(b));
    }

    @Override
    public Set getAxioms(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return asSet(ints.getAxioms());
        }
        Set axioms = new HashSet<>();
        for (OWLOntology o : getImportsClosure()) {
            axioms.addAll(o.getAxioms());
        }
        return axioms;
    }

    @Nonnull
    @Override
    @SuppressWarnings("unchecked")
    public  Set getAxioms(AxiomType axiomType) {
        return (Set) asSet(ints.getAxiomsByType().getValues(axiomType));
    }

    @Override
    public  Set getAxioms(AxiomType axiomType,
        boolean includeImportsClosure) {
        return getAxioms(axiomType, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public  Set getAxioms(AxiomType axiomType,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getAxioms(axiomType);
        }
        Set toReturn = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            toReturn.addAll(o.getAxioms(axiomType));
        }
        return toReturn;
    }

    @Nonnull
    @Override
    public Set getTBoxAxioms(Imports includeImportsClosure) {
        Set toReturn = new HashSet<>();
        for (AxiomType type : AxiomType.TBoxAxiomTypes) {
            assert type != null;
            toReturn.addAll(getAxioms(type, includeImportsClosure));
        }
        return toReturn;
    }

    @Nonnull
    @Override
    public Set getABoxAxioms(Imports includeImportsClosure) {
        Set toReturn = new HashSet<>();
        for (AxiomType type : AxiomType.ABoxAxiomTypes) {
            assert type != null;
            toReturn.addAll(getAxioms(type, includeImportsClosure));
        }
        return toReturn;
    }

    @Nonnull
    @Override
    public Set getRBoxAxioms(Imports includeImportsClosure) {
        Set toReturn = new HashSet<>();
        for (AxiomType type : AxiomType.RBoxAxiomTypes) {
            assert type != null;
            toReturn.addAll(getAxioms(type, includeImportsClosure));
        }
        return toReturn;
    }

    @Override
    public  int getAxiomCount(AxiomType axiomType) {
        return ints.getAxiomCount(axiomType);
    }

    @Override
    public Set getLogicalAxioms() {
        return ints.getLogicalAxioms();
    }

    @Override
    public Set getLogicalAxioms(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.getLogicalAxioms();
        }
        Set result = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            result.addAll(o.getLogicalAxioms(EXCLUDED));
        }
        return result;
    }

    @Override
    public Set getLogicalAxioms(boolean includeImportsClosure) {
        return getLogicalAxioms(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public int getLogicalAxiomCount() {
        return ints.getLogicalAxiomCount();
    }

    @Override
    public int getLogicalAxiomCount(boolean includeImportsClosure) {
        return getLogicalAxiomCount(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public int getLogicalAxiomCount(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.getLogicalAxiomCount();
        }
        int total = 0;
        for (OWLOntology o : getImportsClosure()) {
            total += o.getLogicalAxiomCount(EXCLUDED);
        }
        return total;
    }

    @Nonnull
    @Override
    public Set getAnnotations() {
        return (Set) ints.getOntologyAnnotations(true);
    }

    @Override
    public Set getGeneralClassAxioms() {
        return ontgenAxioms.get(this);
    }

    @Override
    public boolean containsAxiom(@Nonnull OWLAxiom axiom, boolean includeImportsClosure) {
        return containsAxiom(axiom, Imports.fromBoolean(includeImportsClosure),
            AxiomAnnotations.CONSIDER_AXIOM_ANNOTATIONS);
    }

    @Override
    public boolean containsAxiom(@Nonnull OWLAxiom axiom, Imports includeImportsClosure,
        AxiomAnnotations ignoreAnnotations) {
        if (includeImportsClosure == EXCLUDED) {
            if (ignoreAnnotations == AxiomAnnotations.CONSIDER_AXIOM_ANNOTATIONS) {
                return containsAxiom(axiom);
            } else {
                return containsAxiomIgnoreAnnotations(axiom);
            }
        }
        for (OWLOntology ont : getImportsClosure()) {
            if (ont.containsAxiom(axiom, EXCLUDED, ignoreAnnotations)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsAxiomIgnoreAnnotations(@Nonnull OWLAxiom axiom) {
        for (OWLAxiom ax : ints.getAxiomsByType().getValues(axiom.getAxiomType())) {
            if (ax.equalsIgnoreAnnotations(axiom)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsAxiomIgnoreAnnotations(@Nonnull OWLAxiom axiom,
        boolean importsIncluded) {
        return containsAxiom(axiom, Imports.fromBoolean(importsIncluded),
            AxiomAnnotations.IGNORE_AXIOM_ANNOTATIONS);
    }

    @Override
    @Nonnull
    public Set getAxiomsIgnoreAnnotations(@Nonnull OWLAxiom axiom) {
        Set result = createLinkedSet();
        if (containsAxiom(axiom)) {
            result.add(axiom);
        }
        for (OWLAxiom ax : ints.getAxiomsByType().getValues(axiom.getAxiomType())) {
            if (ax.equalsIgnoreAnnotations(axiom)) {
                result.add(ax);
            }
        }
        return result;
    }

    @Override
    public Set getAxiomsIgnoreAnnotations(@Nonnull OWLAxiom axiom,
        boolean includeImportsClosure) {
        return getAxiomsIgnoreAnnotations(axiom, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAxiomsIgnoreAnnotations(@Nonnull OWLAxiom axiom,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getAxiomsIgnoreAnnotations(axiom);
        }
        Set result = createLinkedSet();
        for (OWLOntology ont : getImportsClosure()) {
            result.addAll(ont.getAxiomsIgnoreAnnotations(axiom, EXCLUDED));
        }
        return result;
    }

    @Override
    public boolean containsClassInSignature(IRI owlClassIRI, Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.containsClassInSignature(owlClassIRI);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsClassInSignature(owlClassIRI, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsObjectPropertyInSignature(IRI owlObjectPropertyIRI,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.containsObjectPropertyInSignature(owlObjectPropertyIRI);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsObjectPropertyInSignature(owlObjectPropertyIRI, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsDataPropertyInSignature(IRI owlDataPropertyIRI,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.containsDataPropertyInSignature(owlDataPropertyIRI);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsDataPropertyInSignature(owlDataPropertyIRI, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsAnnotationPropertyInSignature(IRI owlAnnotationPropertyIRI,
        Imports includeImportsClosure) {
        if (includeImportsClosure == INCLUDED) {
            for (OWLOntology o : getImportsClosure()) {
                if (o.containsAnnotationPropertyInSignature(owlAnnotationPropertyIRI, EXCLUDED)) {
                    return true;
                }
            }
        } else {
            if (ints.containsAnnotationPropertyInSignature(owlAnnotationPropertyIRI)) {
                return true;
            }
        }
        OWLAnnotationProperty p = getOWLOntologyManager().getOWLDataFactory()
            .getOWLAnnotationProperty(owlAnnotationPropertyIRI);
        return checkOntologyAnnotations(p);
    }

    private boolean checkOntologyAnnotations(OWLAnnotationProperty owlAnnotationProperty) {
        for (OWLAnnotation anno : ints.getOntologyAnnotations(false)) {
            if (anno.getProperty().equals(owlAnnotationProperty)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsIndividualInSignature(IRI owlIndividualIRI,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.containsIndividualInSignature(owlIndividualIRI);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsIndividualInSignature(owlIndividualIRI, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsDatatypeInSignature(IRI owlDatatypeIRI, Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.containsDatatypeInSignature(owlDatatypeIRI);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsDatatypeInSignature(owlDatatypeIRI, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public Set getEntitiesInSignature(@Nonnull IRI entityIRI) {
        return getEntitiesInSignature(entityIRI, EXCLUDED);
    }

    @Override
    public Set getEntitiesInSignature(IRI iri, Imports includeImportsClosure) {
        Set result = createSet(6);
        if (containsClassInSignature(iri, includeImportsClosure)) {
            result.add(getOWLOntologyManager().getOWLDataFactory().getOWLClass(iri));
        }
        if (containsObjectPropertyInSignature(iri, includeImportsClosure)) {
            result.add(getOWLOntologyManager().getOWLDataFactory().getOWLObjectProperty(iri));
        }
        if (containsDataPropertyInSignature(iri, includeImportsClosure)) {
            result.add(getOWLOntologyManager().getOWLDataFactory().getOWLDataProperty(iri));
        }
        if (containsIndividualInSignature(iri, includeImportsClosure)) {
            result.add(getOWLOntologyManager().getOWLDataFactory().getOWLNamedIndividual(iri));
        }
        if (containsDatatypeInSignature(iri, includeImportsClosure)) {
            result.add(getOWLOntologyManager().getOWLDataFactory().getOWLDatatype(iri));
        }
        if (containsAnnotationPropertyInSignature(iri, includeImportsClosure)) {
            result.add(getOWLOntologyManager().getOWLDataFactory().getOWLAnnotationProperty(iri));
        }
        return result;
    }

    @Override
    public Set getPunnedIRIs(Imports includeImportsClosure) {
        Set punned = new HashSet<>();
        Set test = new HashSet<>();
        if (includeImportsClosure == INCLUDED) {
            for (OWLOntology o : getImportsClosure()) {
                for (OWLEntity e : o.getClassesInSignature(EXCLUDED)) {
                    if (!test.add(e.getIRI())) {
                        punned.add(e.getIRI());
                    }
                }
                for (OWLEntity e : o.getDataPropertiesInSignature(EXCLUDED)) {
                    if (!test.add(e.getIRI())) {
                        punned.add(e.getIRI());
                    }
                }
                for (OWLEntity e : o.getObjectPropertiesInSignature(EXCLUDED)) {
                    if (!test.add(e.getIRI())) {
                        punned.add(e.getIRI());
                    }
                }
                for (OWLEntity e : o.getAnnotationPropertiesInSignature(EXCLUDED)) {
                    if (!test.add(e.getIRI())) {
                        punned.add(e.getIRI());
                    }
                }
                for (OWLEntity e : o.getDatatypesInSignature(EXCLUDED)) {
                    if (!test.add(e.getIRI())) {
                        punned.add(e.getIRI());
                    }
                }
                for (OWLEntity e : o.getIndividualsInSignature(EXCLUDED)) {
                    if (!test.add(e.getIRI())) {
                        punned.add(e.getIRI());
                    }
                }
            }
            if (punned.isEmpty()) {
                return CollectionFactory.emptySet();
            }
            return punned;
        } else {
            for (OWLEntity e : getClassesInSignature(EXCLUDED)) {
                test.add(e.getIRI());
            }
            for (OWLEntity e : getDataPropertiesInSignature(EXCLUDED)) {
                if (!test.add(e.getIRI())) {
                    punned.add(e.getIRI());
                }
            }
            for (OWLEntity e : getObjectPropertiesInSignature(EXCLUDED)) {
                if (!test.add(e.getIRI())) {
                    punned.add(e.getIRI());
                }
            }
            for (OWLEntity e : getAnnotationPropertiesInSignature(EXCLUDED)) {
                if (!test.add(e.getIRI())) {
                    punned.add(e.getIRI());
                }
            }
            for (OWLEntity e : getDatatypesInSignature(EXCLUDED)) {
                if (!test.add(e.getIRI())) {
                    punned.add(e.getIRI());
                }
            }
            for (OWLEntity e : getIndividualsInSignature(EXCLUDED)) {
                if (!test.add(e.getIRI())) {
                    punned.add(e.getIRI());
                }
            }
            if (punned.isEmpty()) {
                return CollectionFactory.emptySet();
            }
            return punned;
        }
    }

    @Override
    public boolean containsReference(@Nonnull OWLEntity entity, Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.containsReference(entity);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsReference(entity, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean isDeclared(OWLEntity owlEntity) {
        return ints.isDeclared(owlEntity);
    }

    @Override
    public boolean isDeclared(OWLEntity owlEntity, Imports includeImportsClosure) {
        if (isDeclared(owlEntity)) {
            return true;
        }
        if (includeImportsClosure == INCLUDED) {
            for (OWLOntology ont : getOWLOntologyManager().getImportsClosure(this)) {
                if (!ont.equals(this) && ont.isDeclared(owlEntity)) {
                    return true;
                }
            }
        }
        return false;
    }

    @Override
    public boolean containsEntityInSignature(@Nonnull OWLEntity owlEntity) {
        return containsEntityInSignature(owlEntity, EXCLUDED);
    }

    @Override
    public boolean containsEntityInSignature(@Nonnull OWLEntity owlEntity,
        Imports includeImportsClosure) {
        if (includeImportsClosure != INCLUDED) {
            // Do not use the cached signature if it has not been created already.
            // Creating the cache while this method is called during updates leads to very expensive
            // lookups.
            Set set = ontsignatures.getIfPresent(this);
            if (set == null) {
                if (ints.containsReference(owlEntity)) {
                    return true;
                }
                return getAnnotations().stream()
                    .anyMatch(a -> a.getSignature().contains(owlEntity));
            }
            return set.contains(owlEntity);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.containsEntityInSignature(owlEntity, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean containsEntityInSignature(IRI entityIRI, Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            if (containsClassInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
            if (containsObjectPropertyInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
            if (containsDataPropertyInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
            if (containsIndividualInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
            if (containsDatatypeInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
            if (containsAnnotationPropertyInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
            return false;
        }
        for (OWLOntology ont : getImportsClosure()) {
            if (ont.containsEntityInSignature(entityIRI, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public Set getSignature() {
        return ontsignatures.get(this);
    }

    @Override
    public Set getSignature(Imports includeImportsClosure) {
        Set entities = getSignature();
        if (includeImportsClosure == INCLUDED) {
            for (OWLOntology ont : getImportsClosure()) {
                entities.addAll(ont.getSignature(EXCLUDED));
            }
        }
        return entities;
    }

    @Nonnull
    private static  Set asSet(Iterable i) {
        if (i instanceof Set) {
            // in this case we can use a list for the defensive copy
            List list = new ArrayList<>();
            i.forEach(list::add);
            return CollectionFactory.getCopyOnRequestSetFromImmutableCollection(list);
        }
        // if the input is not a set, we need to make sure there are no
        // duplicates
        Set set = new HashSet<>();
        i.forEach(set::add);
        return set;
    }

    @Nonnull
    private static  Set asCacheable(Iterable i) {
        if (i instanceof List) {
            List list = (List) i;
            list.sort(null);
            return CollectionFactory.getCopyOnRequestSetFromImmutableCollection(list);
        }
        List list = new ArrayList<>();
        i.forEach(list::add);
        list.sort(null);
        if (i instanceof Set) {
            // in this case we can use a list for the defensive copy
            return CollectionFactory.getCopyOnRequestSetFromImmutableCollection(list);
        }
        // if the input is not a set, we need to make sure there are no
        // duplicates
        Set set = new LinkedHashSet<>();
        list.forEach(set::add);
        return set;
    }

    protected Iterable classesInSignature() {
        return ontclassesSignatures.get(this);
    }

    protected Iterable dataPropertiesInSignature() {
        return ontdataPropertySignatures.get(this);
    }

    protected Iterable objectPropertiesInSignature() {
        return ontobjectPropertySignatures.get(this);
    }

    protected Iterable individualsInSignature() {
        return ontindividualSignatures.get(this);
    }

    protected Iterable datatypesInSignature() {
        return ontdatatypeSignatures.get(this);
    }

    @Override
    public Set getAnonymousIndividuals() {
        return ontanonCaches.get(this);
    }

    protected Iterable annotationPropertiesInSignature() {
        return ontannotationPropertiesSignatures.get(this);
    }

    @Override
    public Set getClassesInSignature() {
        return asSet(classesInSignature());
    }

    @Override
    public Set getDataPropertiesInSignature() {
        return asSet(dataPropertiesInSignature());
    }

    @Override
    public Set getObjectPropertiesInSignature() {
        return asSet(objectPropertiesInSignature());
    }

    @Override
    public Set getIndividualsInSignature() {
        return asSet(individualsInSignature());
    }

    @Override
    public Set getDatatypesInSignature() {
        return asSet(datatypesInSignature());
    }

    @Override
    public Set getClassesInSignature(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getClassesInSignature();
        }
        Set results = createLinkedSet();
        for (OWLOntology ont : getImportsClosure()) {
            results.addAll(ont.getClassesInSignature());
        }
        return results;
    }

    @Override
    public Set getObjectPropertiesInSignature(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getObjectPropertiesInSignature();
        }
        Set results = createLinkedSet();
        for (OWLOntology ont : getImportsClosure()) {
            results.addAll(ont.getObjectPropertiesInSignature());
        }
        return results;
    }

    @Override
    public Set getDataPropertiesInSignature(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getDataPropertiesInSignature();
        }
        Set results = createLinkedSet();
        for (OWLOntology ont : getImportsClosure()) {
            results.addAll(ont.getDataPropertiesInSignature());
        }
        return results;
    }

    @Override
    public Set getIndividualsInSignature(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getIndividualsInSignature();
        }
        Set results = createLinkedSet();
        for (OWLOntology ont : getImportsClosure()) {
            results.addAll(ont.getIndividualsInSignature());
        }
        return results;
    }

    @Override
    public Set getReferencedAnonymousIndividuals(
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return asSet(ints.get(OWLAnonymousIndividual.class, OWLAxiom.class).get().keySet());
        }
        Set result = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            result.addAll(o.getReferencedAnonymousIndividuals(EXCLUDED));
        }
        return result;
    }

    @Override
    public Set getDatatypesInSignature(Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getDatatypesInSignature();
        }
        Set results = createLinkedSet();
        for (OWLOntology ont : getImportsClosure()) {
            results.addAll(ont.getDatatypesInSignature());
        }
        return results;
    }

    @Override
    public Set getAnnotationPropertiesInSignature() {
        return asSet(annotationPropertiesInSignature());
    }

    @Override
    public Set getAnnotationPropertiesInSignature(
        Imports includeImportsClosure) {
        Set props = createLinkedSet();
        if (includeImportsClosure == EXCLUDED) {
            return asSet(annotationPropertiesInSignature());
        } else {
            for (OWLOntology ont : getImportsClosure()) {
                props.addAll(ont.getAnnotationPropertiesInSignature(EXCLUDED));
            }
        }
        return props;
    }

    @Nonnull
    @Override
    public Set getImportsDeclarations() {
        Set result = new TreeSet<>();
        for (OWLImportsDeclaration importsDeclaration : ints.getImportsDeclarations(false)) {
            result.add(importsDeclaration);
        }
        return result;
    }

    @Override
    public Set getDirectImportsDocuments() {
        Set result = new TreeSet<>();
        for (OWLImportsDeclaration importsDeclaration : ints.getImportsDeclarations(false)) {
            result.add(importsDeclaration.getIRI());
        }
        return result;
    }

    @Override
    public Set getImports() {
        return getOWLOntologyManager().getImports(this);
    }

    @Override
    public Set getDirectImports() {
        return getOWLOntologyManager().getDirectImports(this);
    }

    @Override
    public Set getImportsClosure() {
        return getOWLOntologyManager().getImportsClosure(this);
    }

    // Add/Remove axiom mechanism. Each axiom gets visited by a visitor, which
    // adds the axiom
    // to the appropriate index.
    @Override
    public void accept(@Nonnull OWLObjectVisitor visitor) {
        visitor.visit(this);
    }

    @Override
    public void accept(@Nonnull OWLNamedObjectVisitor visitor) {
        visitor.visit(this);
    }

    @Override
    public  O accept(OWLNamedObjectVisitorEx visitor) {
        return visitor.visit(this);
    }

    @Override
    public  O accept(@Nonnull OWLObjectVisitorEx visitor) {
        return visitor.visit(this);
    }

    // Utility methods for getting/setting various values in maps and sets
    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof OWLOntology)) {
            return false;
        }
        OWLOntology other = (OWLOntology) obj;
        return ontologyID.equals(other.getOntologyID());
    }

    @Override
    public int hashCode() {
        return ontologyID.hashCode();
    }

    @Override
    public Set getAxioms(OWLClass cls, Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return asSet(ints.get(OWLClass.class, OWLClassAxiom.class).get().getValues(cls));
        }
        Set result = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            result.addAll(o.getAxioms(cls, EXCLUDED));
        }
        return result;
    }

    @Override
    public Set getAxioms(OWLObjectPropertyExpression property,
        Imports includeImportsClosure) {
        Set result = createSet(50);
        if (includeImportsClosure == EXCLUDED) {
            result.addAll(getAsymmetricObjectPropertyAxioms(property));
            result.addAll(getReflexiveObjectPropertyAxioms(property));
            result.addAll(getSymmetricObjectPropertyAxioms(property));
            result.addAll(getIrreflexiveObjectPropertyAxioms(property));
            result.addAll(getTransitiveObjectPropertyAxioms(property));
            result.addAll(getInverseFunctionalObjectPropertyAxioms(property));
            result.addAll(getFunctionalObjectPropertyAxioms(property));
            result.addAll(getInverseObjectPropertyAxioms(property));
            result.addAll(getObjectPropertyDomainAxioms(property));
            result.addAll(getEquivalentObjectPropertiesAxioms(property));
            result.addAll(getDisjointObjectPropertiesAxioms(property));
            result.addAll(getObjectPropertyRangeAxioms(property));
            result.addAll(getObjectSubPropertyAxiomsForSubProperty(property));
        } else {
            for (OWLOntology o : getImportsClosure()) {
                result.addAll(o.getAxioms(property, EXCLUDED));
            }
        }
        return result;
    }

    @Override
    public Set getAxioms(OWLAnnotationProperty property,
        Imports includeImportsClosure) {
        Set result = createLinkedSet();
        if (includeImportsClosure == EXCLUDED) {
            for (OWLSubAnnotationPropertyOfAxiom ax : getAxioms(
                AxiomType.SUB_ANNOTATION_PROPERTY_OF)) {
                if (ax.getSubProperty().equals(property)) {
                    result.add(ax);
                }
            }
            for (OWLAnnotationPropertyRangeAxiom ax : getAxioms(
                AxiomType.ANNOTATION_PROPERTY_RANGE)) {
                if (ax.getProperty().equals(property)) {
                    result.add(ax);
                }
            }
            for (OWLAnnotationPropertyDomainAxiom ax : getAxioms(
                AxiomType.ANNOTATION_PROPERTY_DOMAIN)) {
                if (ax.getProperty().equals(property)) {
                    result.add(ax);
                }
            }
        } else {
            for (OWLOntology o : getImportsClosure()) {
                result.addAll(o.getAxioms(property, EXCLUDED));
            }
        }
        return result;
    }

    @Override
    public Set getAxioms(OWLDataProperty property,
        Imports includeImportsClosure) {
        Set result = createLinkedSet();
        if (includeImportsClosure == EXCLUDED) {
            result.addAll(getDataPropertyDomainAxioms(property));
            result.addAll(getEquivalentDataPropertiesAxioms(property));
            result.addAll(getDisjointDataPropertiesAxioms(property));
            result.addAll(getDataPropertyRangeAxioms(property));
            result.addAll(getFunctionalDataPropertyAxioms(property));
            result.addAll(getDataSubPropertyAxiomsForSubProperty(property));
        } else {
            for (OWLOntology o : getImportsClosure()) {
                result.addAll(o.getAxioms(property, EXCLUDED));
            }
        }
        return result;
    }

    @Override
    public Set getAxioms(OWLIndividual individual,
        Imports includeImportsClosure) {
        Set result = createLinkedSet();
        if (includeImportsClosure == EXCLUDED) {
            result.addAll(getClassAssertionAxioms(individual));
            result.addAll(getObjectPropertyAssertionAxioms(individual));
            result.addAll(getDataPropertyAssertionAxioms(individual));
            result.addAll(getNegativeObjectPropertyAssertionAxioms(individual));
            result.addAll(getNegativeDataPropertyAssertionAxioms(individual));
            result.addAll(getSameIndividualAxioms(individual));
            result.addAll(getDifferentIndividualAxioms(individual));
        } else {
            for (OWLOntology o : getImportsClosure()) {
                result.addAll(o.getAxioms(individual, EXCLUDED));
            }
        }
        return result;
    }

    @Override
    public Set getAxioms(OWLDatatype datatype,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return getDatatypeDefinitions(datatype);
        }
        Set result = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            result.addAll(o.getAxioms(datatype, EXCLUDED));
        }
        return result;
    }

    @Override
    public Set getReferencingAxioms(OWLPrimitive owlEntity) {
        return getReferencingAxioms(owlEntity, EXCLUDED);
    }

    @Override
    public Set getReferencingAxioms(OWLPrimitive owlEntity, boolean includeImports) {
        return getReferencingAxioms(owlEntity, Imports.fromBoolean(includeImports));
    }

    @Override
    public Set getReferencingAxioms(OWLPrimitive owlEntity,
        Imports includeImportsClosure) {
        if (owlEntity instanceof OWLEntity) {
            if (includeImportsClosure == EXCLUDED) {
                return asSet(ints.getReferencingAxioms((OWLEntity) owlEntity));
            }
            Set result = createLinkedSet();
            for (OWLOntology ont : getImportsClosure()) {
                result.addAll(ont.getReferencingAxioms(owlEntity, EXCLUDED));
            }
            return result;
        } else if (owlEntity instanceof OWLAnonymousIndividual) {
            return asSet(ints.get(OWLAnonymousIndividual.class, OWLAxiom.class).get()
                .getValues((OWLAnonymousIndividual) owlEntity));
        } else if (owlEntity instanceof IRI) {
            Set axioms = new HashSet<>();
            // axioms referring entities with this IRI, data property assertions
            // with IRI as subject, annotations with IRI as subject or object.
            Set entities =
                getEntitiesInSignature((IRI) owlEntity, includeImportsClosure);
            for (OWLEntity e : entities) {
                assert e != null;
                axioms.addAll(getReferencingAxioms(e, includeImportsClosure));
            }
            for (OWLDataPropertyAssertionAxiom ax : getAxioms(AxiomType.DATA_PROPERTY_ASSERTION)) {
                if (ax.getObject().getDatatype().getIRI().equals(OWL2Datatype.XSD_ANY_URI.getIRI())
                    && ax.getObject().getLiteral().equals(owlEntity.toString())) {
                    axioms.add(ax);
                }
            }
            for (OWLAnnotationAssertionAxiom ax : getAxioms(AxiomType.ANNOTATION_ASSERTION)) {
                if (ax.getSubject().equals(owlEntity)) {
                    axioms.add(ax);
                } else if (ax.getValue().asLiteral().isPresent()) {
                    OWLLiteral lit = ax.getValue().asLiteral().get();
                    if (lit.getDatatype().getIRI().equals(OWL2Datatype.XSD_ANY_URI.getIRI())
                        && lit.getLiteral().equals(owlEntity.toString())) {
                        axioms.add(ax);
                    }
                }
            }
            return axioms;
        } else if (owlEntity instanceof OWLLiteral) {
            Set axioms = new HashSet<>();
            FindLiterals v = new FindLiterals((OWLLiteral) owlEntity);
            AxiomType.AXIOM_TYPES.stream().flatMap(t -> this.getAxioms(t).stream())
                .filter(ax -> ax.accept(v).booleanValue()).forEach(axioms::add);
            return axioms;
        }
        return CollectionFactory.emptySet();
    }

    // OWLAxiomIndex
    @Override
    public  Set getAxioms(@Nonnull Class type, @Nonnull OWLObject entity,
        Imports includeImports, Navigation forSubPosition) {
        if (includeImports == EXCLUDED) {
            return getAxioms(type, entity.getClass(), entity, EXCLUDED, forSubPosition);
        }
        Set result = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            result.addAll(o.getAxioms(type, entity, EXCLUDED, forSubPosition));
        }
        return result;
    }

    @Override
    @SuppressWarnings("unchecked")
    public  Set getAxioms(@Nonnull Class type,
        @Nonnull Class explicitClass, @Nonnull OWLObject entity,
        @Nonnull Imports includeImports, @Nonnull Navigation forSubPosition) {
        if (includeImports == EXCLUDED) {
            java.util.Optional> optional =
                ints.get((Class) explicitClass, type, forSubPosition);
            if (optional.isPresent()) {
                return asSet(optional.get().getValues(entity));
            }
            Set toReturn = new HashSet<>();
            for (A ax : getAxioms(AxiomType.getTypeForClass(type))) {
                if (ax.getSignature().contains(entity)) {
                    toReturn.add(ax);
                }
            }
            return toReturn;
        }
        Set result = createLinkedSet();
        for (OWLOntology o : getImportsClosure()) {
            result.addAll(o.getAxioms(type, entity, EXCLUDED, forSubPosition));
        }
        return result;
    }

    @Nonnull
    @SuppressWarnings("unchecked")
    @Override
    public  Collection filterAxioms(@Nonnull OWLAxiomSearchFilter filter,
        @Nonnull Object key, Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return (Collection) ints.filterAxioms(filter, key);
        }
        // iterating over the import closure; using a set because there might be
        // duplicate axioms
        Set toReturn = new HashSet<>();
        for (OWLOntology o : getImportsClosure()) {
            toReturn.addAll((Collection) o.filterAxioms(filter, key, EXCLUDED));
        }
        return toReturn;
    }

    @Override
    public boolean contains(@Nonnull OWLAxiomSearchFilter filter, @Nonnull Object key,
        Imports includeImportsClosure) {
        if (includeImportsClosure == EXCLUDED) {
            return ints.contains(filter, key);
        }
        for (OWLOntology o : getImportsClosure()) {
            if (o.contains(filter, key, EXCLUDED)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public Set getAxioms(OWLClass cls) {
        return getAxioms(cls, false);
    }

    @Override
    public Set getAxioms(OWLObjectPropertyExpression property) {
        return getAxioms(property, EXCLUDED);
    }

    @Override
    public Set getAxioms(OWLDataProperty property) {
        return getAxioms(property, EXCLUDED);
    }

    @Override
    public Set getAxioms(OWLIndividual individual) {
        return getAxioms(individual, EXCLUDED);
    }

    @Override
    public Set getAxioms(OWLAnnotationProperty property) {
        return getAxioms(property, EXCLUDED);
    }

    @Override
    public Set getAxioms(OWLDatatype datatype) {
        return getAxioms(datatype, EXCLUDED);
    }

    @Override
    public Set getAxioms(OWLClass cls, boolean includeImportsClosure) {
        return getAxioms(cls, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAxioms(OWLObjectPropertyExpression property,
        boolean includeImportsClosure) {
        return getAxioms(property, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAxioms(OWLDataProperty property,
        boolean includeImportsClosure) {
        return getAxioms(property, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAxioms(OWLIndividual individual,
        boolean includeImportsClosure) {
        return getAxioms(individual, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAxioms(OWLAnnotationProperty property,
        boolean includeImportsClosure) {
        return getAxioms(property, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAxioms(OWLDatatype datatype,
        boolean includeImportsClosure) {
        return getAxioms(datatype, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public void saveOntology() throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this);
    }

    @Override
    public void saveOntology(IRI documentIRI) throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, documentIRI);
    }

    @Override
    public void saveOntology(OutputStream outputStream) throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, outputStream);
    }

    @Override
    public void saveOntology(OWLDocumentFormat ontologyFormat) throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, ontologyFormat);
    }

    @Override
    public void saveOntology(OWLDocumentFormat ontologyFormat, IRI documentIRI)
        throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, ontologyFormat, documentIRI);
    }

    @Override
    public void saveOntology(OWLDocumentFormat ontologyFormat, OutputStream outputStream)
        throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, ontologyFormat, outputStream);
    }

    @Override
    public void saveOntology(OWLOntologyDocumentTarget documentTarget)
        throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, documentTarget);
    }

    @Override
    public void saveOntology(OWLDocumentFormat ontologyFormat,
        OWLOntologyDocumentTarget documentTarget) throws OWLOntologyStorageException {
        getOWLOntologyManager().saveOntology(this, ontologyFormat, documentTarget);
    }

    @Override
    public Set getClassAssertionAxioms(OWLClassExpression ce) {
        if (ce.isAnonymous()) {
            getAxioms(AxiomType.CLASS_ASSERTION).stream()
                .filter(x -> x.getClassExpression().equals(ce)).collect(Collectors.toSet());
        }
        return super.getClassAssertionAxioms(ce);
    }

    @Override
    public boolean containsEntitiesOfTypeInSignature(EntityType type) {
        return ints.anyEntities(type);
    }

    @Override
    public boolean containsDatatypeInSignature(IRI owlDatatypeIRI) {
        return containsDatatypeInSignature(owlDatatypeIRI, EXCLUDED);
    }

    @Override
    public boolean containsEntityInSignature(IRI entityIRI) {
        return containsEntityInSignature(entityIRI, EXCLUDED);
    }

    @Override
    public boolean containsClassInSignature(IRI owlClassIRI) {
        return containsClassInSignature(owlClassIRI, EXCLUDED);
    }

    @Override
    public boolean containsObjectPropertyInSignature(IRI owlObjectPropertyIRI) {
        return containsObjectPropertyInSignature(owlObjectPropertyIRI, EXCLUDED);
    }

    @Override
    public boolean containsDataPropertyInSignature(IRI owlDataPropertyIRI) {
        return containsDataPropertyInSignature(owlDataPropertyIRI, EXCLUDED);
    }

    @Override
    public boolean containsAnnotationPropertyInSignature(IRI owlAnnotationPropertyIRI) {
        return containsAnnotationPropertyInSignature(owlAnnotationPropertyIRI, EXCLUDED);
    }

    @Override
    public boolean containsIndividualInSignature(IRI owlIndividualIRI) {
        return containsIndividualInSignature(owlIndividualIRI, EXCLUDED);
    }

    @Override
    public boolean containsReference(OWLEntity entity) {
        return containsReference(entity, EXCLUDED);
    }

    @Override
    public Set getClassesInSignature(boolean includeImportsClosure) {
        return getClassesInSignature(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getObjectPropertiesInSignature(boolean includeImportsClosure) {
        return getObjectPropertiesInSignature(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getDataPropertiesInSignature(boolean includeImportsClosure) {
        return getDataPropertiesInSignature(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getIndividualsInSignature(boolean includeImportsClosure) {
        return getIndividualsInSignature(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getReferencedAnonymousIndividuals(
        boolean includeImportsClosure) {
        return getReferencedAnonymousIndividuals(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getDatatypesInSignature(boolean includeImportsClosure) {
        return getDatatypesInSignature(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getAnnotationPropertiesInSignature(
        boolean includeImportsClosure) {
        return getAnnotationPropertiesInSignature(Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsEntityInSignature(OWLEntity owlEntity, boolean includeImportsClosure) {
        return containsEntityInSignature(owlEntity, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsEntityInSignature(IRI entityIRI, boolean includeImportsClosure) {
        return containsEntityInSignature(entityIRI, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsClassInSignature(IRI owlClassIRI, boolean includeImportsClosure) {
        return containsClassInSignature(owlClassIRI, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsObjectPropertyInSignature(IRI owlObjectPropertyIRI,
        boolean includeImportsClosure) {
        return containsObjectPropertyInSignature(owlObjectPropertyIRI,
            Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsDataPropertyInSignature(IRI owlDataPropertyIRI,
        boolean includeImportsClosure) {
        return containsDataPropertyInSignature(owlDataPropertyIRI,
            Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsAnnotationPropertyInSignature(IRI owlAnnotationPropertyIRI,
        boolean includeImportsClosure) {
        return containsAnnotationPropertyInSignature(owlAnnotationPropertyIRI,
            Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsDatatypeInSignature(IRI owlDatatypeIRI, boolean includeImportsClosure) {
        return containsDatatypeInSignature(owlDatatypeIRI,
            Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsIndividualInSignature(IRI owlIndividualIRI,
        boolean includeImportsClosure) {
        return containsIndividualInSignature(owlIndividualIRI,
            Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public Set getEntitiesInSignature(IRI iri, boolean includeImportsClosure) {
        return getEntitiesInSignature(iri, Imports.fromBoolean(includeImportsClosure));
    }

    @Override
    public boolean containsReference(OWLEntity entity, boolean includeImportsClosure) {
        return containsReference(entity, Imports.fromBoolean(includeImportsClosure));
    }
}




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