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The core ELK Reasoner package
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/*
 * #%L
 * ELK Reasoner
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2016 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%
 */
package org.semanticweb.elk.reasoner.taxonomy;

import java.util.Set;

import org.semanticweb.elk.owl.interfaces.ElkClass;
import org.semanticweb.elk.owl.interfaces.ElkEntity;
import org.semanticweb.elk.owl.interfaces.ElkNamedIndividual;
import org.semanticweb.elk.owl.predefined.PredefinedElkClassFactory;
import org.semanticweb.elk.reasoner.taxonomy.impl.AbstractDistinctBottomTaxonomy;
import org.semanticweb.elk.reasoner.taxonomy.impl.AbstractUpdateableGenericInstanceTaxonomy;
import org.semanticweb.elk.reasoner.taxonomy.impl.BottomGenericTypeNode;
import org.semanticweb.elk.reasoner.taxonomy.impl.ConcurrentNodeStore;
import org.semanticweb.elk.reasoner.taxonomy.impl.IndividualNode;
import org.semanticweb.elk.reasoner.taxonomy.impl.NonBottomGenericTypeNode;
import org.semanticweb.elk.reasoner.taxonomy.model.ComparatorKeyProvider;
import org.semanticweb.elk.reasoner.taxonomy.model.GenericInstanceNode;
import org.semanticweb.elk.reasoner.taxonomy.model.GenericTypeNode;
import org.semanticweb.elk.reasoner.taxonomy.model.InstanceTaxonomy;
import org.semanticweb.elk.reasoner.taxonomy.model.TaxonomyNodeFactory;

/**
 * Instance taxonomy that is suitable for concurrent processing. Taxonomy
 * objects are only constructed for consistent ontologies, and some consequences
 * of this are hardcoded here.
 * 
 * This class extends an implementation of a class taxonomy, so it may be
 * suboptimal for use with ontologies with no individuals.
 * 
 * @author Peter Skocovsky
 */
public class IndividualTaxonomy
		extends AbstractUpdateableGenericInstanceTaxonomy<
				ElkClass,
				ElkNamedIndividual,
				GenericTypeNode.Projection,
				GenericInstanceNode.Projection,
				NonBottomGenericTypeNode.Projection,
				IndividualNode.Projection2
		> {

	private final GenericTypeNode.Projection bottomNode_;
	
	public IndividualTaxonomy(final PredefinedElkClassFactory elkFactory,
			final ComparatorKeyProvider classKeyProvider,
			final ComparatorKeyProvider instanceKeyProvider) {
		super(
				new ConcurrentNodeStore<
						ElkClass,
						NonBottomGenericTypeNode.Projection
				>(classKeyProvider),
				new TaxonomyNodeFactory<
						ElkClass,
						NonBottomGenericTypeNode.Projection,
						AbstractDistinctBottomTaxonomy<
								ElkClass,
								GenericTypeNode.Projection,
								NonBottomGenericTypeNode.Projection
						>
				>() {
					@Override
					public NonBottomGenericTypeNode.Projection createNode(
							final Iterable members, final int size,
							final AbstractDistinctBottomTaxonomy<
									ElkClass,
									GenericTypeNode.Projection,
									NonBottomGenericTypeNode.Projection
							> taxonomy) {
						return new NonBottomGenericTypeNode.Projection(
								taxonomy, members, size);
					}
				},
				new ConcurrentNodeStore<
						ElkNamedIndividual,
						IndividualNode.Projection2
				>(instanceKeyProvider),
				new TaxonomyNodeFactory<
						ElkNamedIndividual,
						IndividualNode.Projection2,
						InstanceTaxonomy
				>() {
					@Override
					public IndividualNode.Projection2 createNode(
							final Iterable members, final int size,
							final InstanceTaxonomy taxonomy) {
						return new IndividualNode.Projection2(
								taxonomy, members, size);
					}
				},
				elkFactory.getOwlThing());
		this.bottomNode_ = new BottomGenericTypeNode.Projection(
				this, elkFactory.getOwlNothing());
	}

	@Override
	public GenericTypeNode.Projection getBottomNode() {
		return bottomNode_;
	}

	@Override
	protected Set> toTaxonomyNodes(
			final Set> nodes) {
		return nodes;
	}

}