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/* |
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* |
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* Copyright (C) 2009-2017 Julian Mendez |
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* |
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* |
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* This file is part of jcel. |
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* |
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* |
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* The contents of this file are subject to the GNU Lesser General Public License |
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* version 3 |
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* |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* |
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* Alternatively, the contents of this file may be used under the terms |
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* of the Apache License, Version 2.0, in which case the |
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* provisions of the Apache License, Version 2.0 are applicable instead of those |
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* above. |
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* |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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package de.tudresden.inf.lat.jcel.core.algorithm.cel; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.HashSet; |
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import java.util.List; |
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import java.util.Objects; |
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import java.util.Optional; |
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import java.util.Set; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.FunctObjectPropAxiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.GCI0Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.GCI1Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.GCI2Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.GCI3Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.NominalAxiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.NormalizedIntegerAxiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.NormalizedIntegerAxiomVisitor; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.RI1Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.RI2Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.RI3Axiom; |
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import de.tudresden.inf.lat.jcel.coreontology.axiom.RangeAxiom; |
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import de.tudresden.inf.lat.util.map.OptMap; |
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import de.tudresden.inf.lat.util.map.OptMapImpl; |
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/** |
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* This class models an extended ontology. This is referred in the documentation |
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* as <i>Ô</i>. |
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* |
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* @author Julian Mendez |
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*/ |
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public class CelExtendedOntology implements NormalizedIntegerAxiomVisitor<Boolean> { |
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private final OptMap<Integer, Set<ExtensionEntry>> ohatOfClass = new OptMapImpl<>(new HashMap<>()); |
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private final OptMap<Integer, OptMap<Integer, Set<ExtensionEntry>>> ohatOfExistential = new OptMapImpl<>( |
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new HashMap<>()); |
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private final OptMap<Integer, Set<RI3Axiom>> subPropertyAxiomSetByLeft = new OptMapImpl<>(new HashMap<>()); |
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private final OptMap<Integer, Set<RI3Axiom>> subPropertyAxiomSetByRight = new OptMapImpl<>(new HashMap<>()); |
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/** |
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* Constructs a new CEL extended ontology. |
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*/ |
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public CelExtendedOntology() { |
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} |
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private void addClassEntry(Integer classId, ExtensionEntry entry) { |
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if (!this.ohatOfClass.get(classId).isPresent()) { |
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this.ohatOfClass.put(classId, new HashSet<>()); |
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} |
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this.ohatOfClass.get(classId).get().add(entry); |
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} |
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private void addTo(Integer property, RI3Axiom axiom, OptMap<Integer, Set<RI3Axiom>> map) { |
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Optional<Set<RI3Axiom>> optAxiomSet = map.get(property); |
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if (!optAxiomSet.isPresent()) { |
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optAxiomSet = Optional.of(new HashSet<>()); |
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map.put(property, optAxiomSet.get()); |
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} |
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optAxiomSet.get().add(axiom); |
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} |
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/** |
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* Clears all the internal sets. |
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*/ |
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public void clear() { |
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this.ohatOfClass.clear(); |
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this.ohatOfExistential.clear(); |
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this.subPropertyAxiomSetByLeft.clear(); |
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this.subPropertyAxiomSetByRight.clear(); |
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} |
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/** |
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* Returns the class entries related to the specified class. |
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* |
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* @param classId |
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* class identifier |
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* @return the class entries related to the specified class |
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*/ |
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public Set<ExtensionEntry> getClassEntries(Integer classId) { |
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Objects.requireNonNull(classId); |
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Optional<Set<ExtensionEntry>> optSet = this.ohatOfClass.get(classId); |
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if (!optSet.isPresent()) { |
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optSet = Optional.of(Collections.emptySet()); |
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} |
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return Collections.unmodifiableSet(optSet.get()); |
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} |
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/** |
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* Returns the set of classes. |
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* |
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* @return the set of classes |
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*/ |
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public Set<Integer> getClassSet() { |
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return Collections.unmodifiableSet(this.ohatOfClass.keySet()); |
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} |
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/** |
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* Returns the existential entries related to the specified object property |
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* and class. |
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* |
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* @param propertyId |
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* object property identifier |
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* @param classId |
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* class identifier |
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* @return the existential entries related to the specified object property |
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* and class. |
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*/ |
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public Set<ExtensionEntry> getExistentialEntries(Integer propertyId, Integer classId) { |
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Objects.requireNonNull(propertyId); |
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Objects.requireNonNull(classId); |
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Set<ExtensionEntry> ret = Collections.emptySet(); |
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Optional<OptMap<Integer, Set<ExtensionEntry>>> optMap = this.ohatOfExistential.get(propertyId); |
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if (optMap.isPresent()) { |
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Optional<Set<ExtensionEntry>> optSet = optMap.get().get(classId); |
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if (optSet.isPresent()) { |
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ret = optSet.get(); |
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} else { |
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ret = Collections.emptySet(); |
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} |
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} |
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return Collections.unmodifiableSet(ret); |
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} |
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/** |
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* Returns the set of sub object property axioms related where the specified |
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* object property occurs on the left-hand part of the composition. |
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* |
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* @param elem |
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* object property |
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* @return the set of sub object property axioms related where the specified |
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* object property occurs on the left-hand part of the composition. |
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*/ |
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public Set<RI3Axiom> getSubPropertyAxiomSetByLeft(Integer elem) { |
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Objects.requireNonNull(elem); |
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Optional<Set<RI3Axiom>> optSet = this.subPropertyAxiomSetByLeft.get(elem); |
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if (!optSet.isPresent()) { |
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optSet = Optional.of(Collections.emptySet()); |
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} |
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return Collections.unmodifiableSet(optSet.get()); |
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} |
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/** |
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* Returns the set of sub object property axioms related where the specified |
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* object property occurs on the right-hand part of the composition. |
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* |
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* @param elem |
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* object property |
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* @return the set of sub object property axioms related where the specified |
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* object property occurs on the right-hand part of the composition. |
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*/ |
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public Set<RI3Axiom> getSubPropertyAxiomSetByRight(Integer elem) { |
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Objects.requireNonNull(elem); |
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Optional<Set<RI3Axiom>> optSet = this.subPropertyAxiomSetByRight.get(elem); |
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if (!optSet.isPresent()) { |
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optSet = Optional.of(Collections.emptySet()); |
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} |
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return Collections.unmodifiableSet(optSet.get()); |
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} |
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/** |
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* Loads a set of normalized axioms. |
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* |
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* @param axiomSet |
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* set of normalized axioms |
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*/ |
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public void load(Set<NormalizedIntegerAxiom> axiomSet) { |
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Objects.requireNonNull(axiomSet); |
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clear(); |
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axiomSet.forEach(axiom -> { |
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axiom.accept(this); |
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if (axiom instanceof RI3Axiom) { |
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RI3Axiom subPropAxiom = (RI3Axiom) axiom; |
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Integer left = subPropAxiom.getLeftSubProperty(); |
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Integer right = subPropAxiom.getRightSubProperty(); |
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addTo(left, subPropAxiom, this.subPropertyAxiomSetByLeft); |
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addTo(right, subPropAxiom, this.subPropertyAxiomSetByRight); |
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} |
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}); |
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} |
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@Override |
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public String toString() { |
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StringBuffer sbuf = new StringBuffer(); |
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sbuf.append("["); |
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sbuf.append("OHat(cl)=" + this.ohatOfClass.toString()); |
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sbuf.append("OHat(ex)=" + this.ohatOfExistential.toString()); |
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sbuf.append("]"); |
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return sbuf.toString(); |
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} |
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@Override |
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public Boolean visit(FunctObjectPropAxiom axiom) { |
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Objects.requireNonNull(axiom); |
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return false; |
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} |
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@Override |
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public Boolean visit(GCI0Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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addClassEntry(axiom.getSubClass(), new ImplicationEntry(new HashSet<>(), axiom.getSuperClass())); |
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return true; |
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} |
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@Override |
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public Boolean visit(GCI1Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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Integer superClass = axiom.getSuperClass(); |
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List<Integer> operandSet = new ArrayList<>(); |
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operandSet.add(axiom.getLeftSubClass()); |
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operandSet.add(axiom.getRightSubClass()); |
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operandSet.forEach(currentOperand -> { |
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Set<Integer> currentSet = new HashSet<>(); |
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currentSet.addAll(operandSet); |
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currentSet.remove(currentOperand); |
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addClassEntry(currentOperand, new ImplicationEntry(currentSet, superClass)); |
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}); |
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return true; |
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} |
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@Override |
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public Boolean visit(GCI2Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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addClassEntry(axiom.getSubClass(), |
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new ExistentialEntry(axiom.getPropertyInSuperClass(), axiom.getClassInSuperClass())); |
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return true; |
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} |
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@Override |
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public Boolean visit(GCI3Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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ExtensionEntry entry = new ImplicationEntry(new HashSet<>(), axiom.getSuperClass()); |
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Integer propertyId = axiom.getPropertyInSubClass(); |
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Integer classId = axiom.getClassInSubClass(); |
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Optional<OptMap<Integer, Set<ExtensionEntry>>> optMap = this.ohatOfExistential.get(propertyId); |
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OptMap<Integer, Set<ExtensionEntry>> map = null; |
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if (optMap.isPresent()) { |
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map = optMap.get(); |
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} else { |
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map = new OptMapImpl<>(new HashMap<>()); |
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this.ohatOfExistential.put(propertyId, map); |
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} |
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Optional<Set<ExtensionEntry>> optSet = map.get(classId); |
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Set<ExtensionEntry> set = null; |
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if (optSet.isPresent()) { |
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set = optSet.get(); |
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} else { |
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set = new HashSet<>(); |
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map.put(classId, set); |
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} |
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set.add(entry); |
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return true; |
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} |
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@Override |
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public Boolean visit(NominalAxiom axiom) { |
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Objects.requireNonNull(axiom); |
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return false; |
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} |
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@Override |
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public Boolean visit(RangeAxiom axiom) { |
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Objects.requireNonNull(axiom); |
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return false; |
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} |
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@Override |
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public Boolean visit(RI1Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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return false; |
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} |
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@Override |
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public Boolean visit(RI2Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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return false; |
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} |
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@Override |
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public Boolean visit(RI3Axiom axiom) { |
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Objects.requireNonNull(axiom); |
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return false; |
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} |
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} |
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