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ELK consequence-based reasoning engine

There is a newer version: 0.4.3

package org.semanticweb.elk.reasoner.taxonomy;
/*
 * #%L
 * ELK Reasoner
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2011 - 2013 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 java.util.Collections;
import java.util.Set;

import org.semanticweb.elk.owl.interfaces.ElkObject;
import org.semanticweb.elk.reasoner.taxonomy.model.TaxonomyNode;

/**
 * A {@link TaxonomyNode} that does not have any super nodes or sub nodes.
 * 
 * @author "Yevgeny Kazakov"
 * 
 * @param 
 *            the type of objects stored in the nodes
 * 
 * @see SingletoneTaxonomy
 */
public class OrphanNode implements TaxonomyNode {

	/**
	 * the members of the node
	 */
	final Set members;
	/**
	 * the representative of the node; should be among the members
	 */
	final T canonical;

	public OrphanNode(Set members, T canonical) {
		this.members = members;
		this.canonical = canonical;
	}

	@Override
	public Set getMembers() {
		return Collections.unmodifiableSet(members);
	}

	@Override
	public T getCanonicalMember() {
		return canonical;
	}

	@Override
	public Set> getDirectSuperNodes() {
		return Collections.emptySet();
	}

	@Override
	public Set> getAllSuperNodes() {
		return Collections.emptySet();
	}

	@Override
	public Set> getDirectSubNodes() {
		return Collections.emptySet();
	}

	@Override
	public Set> getAllSubNodes() {
		return Collections.emptySet();
	}

}