org.semanticweb.elk.reasoner.saturation.inferences.SubClassInclusionDecomposedConjunct Maven / Gradle / Ivy

Go to download
/**
 * 
 */
package org.semanticweb.elk.reasoner.saturation.inferences;

/*
 * #%L
 * ELK Reasoner
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2015 Department of Computer Science, University of Oxford
 * %%
 * 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.
 * #L%
 */

import org.semanticweb.elk.reasoner.indexing.model.IndexedClassExpression;
import org.semanticweb.elk.reasoner.indexing.model.IndexedContextRoot;
import org.semanticweb.elk.reasoner.indexing.model.IndexedObjectIntersectionOf;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.SubClassInclusionComposed;
import org.semanticweb.elk.reasoner.saturation.conclusions.model.SubClassInclusionDecomposed;
import org.semanticweb.elk.reasoner.tracing.Conclusion;
import org.semanticweb.elk.reasoner.tracing.Conclusion.Factory;

/**
 * A {@link ClassInference} producing a {@link SubClassInclusionDecomposed} from
 * a {@link SubClassInclusionDecomposed} with
 * {@link SubClassInclusionComposed#getSubsumer()} instance of
 * {@link IndexedObjectIntersectionOf}:

 * 
 *  *  [C] ⊑ -(D1 ⊓ D2)
 * ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ D = D1 or D = D2
 *      [C] ⊑ -D
 * 
 * 
 * @see IndexedObjectIntersectionOf#getFirstConjunct()
 * @see IndexedObjectIntersectionOf#getSecondConjunct()
 * 
 * @author Pavel Klinov
 * 
 *         [email protected]
 * 
 * @author Yevgeny Kazakov
 */
public abstract class SubClassInclusionDecomposedConjunct
		extends AbstractSubClassInclusionDecomposedInference {

	private final IndexedObjectIntersectionOf conjunction_;

	public SubClassInclusionDecomposedConjunct(IndexedContextRoot root,
			IndexedObjectIntersectionOf premiseSubsumer,
			IndexedClassExpression conclusionSubsumer) {
		super(root, conclusionSubsumer);
		conjunction_ = premiseSubsumer;
	}

	public IndexedObjectIntersectionOf getConjunction() {
		return conjunction_;
	}

	@Override
	public IndexedContextRoot getOrigin() {
		return getDestination();
	}

	public SubClassInclusionDecomposed getPremise(
			SubClassInclusionDecomposed.Factory factory) {
		return factory.getSubClassInclusionDecomposed(getOrigin(),
				conjunction_);
	}

	@Override
	public int getPremiseCount() {
		return 1;
	}

	@Override
	public Conclusion getPremise(int index, Factory factory) {
		switch (index) {
		case 0:
			return getPremise(factory);
		default:
			return failGetPremise(index);
		}
	}

}