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ELK consequence-based reasoning engine

There is a newer version: 0.4.3

/*
 * #%L
 * ELK Reasoner
 * 
 * $Id$
 * $HeadURL$
 * %%
 * Copyright (C) 2011 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.indexing.entries;

import org.semanticweb.elk.reasoner.indexing.hierarchy.IndexedBinaryPropertyChain;

/**
 * Implements an equality view for instances of
 * {@link IndexedBinaryPropertyChain}
 * 
 * @author "Yevgeny Kazakov"
 * 
 * @param 
 *            The type of the elements in the set where this entry is used
 * 
 * @param 
 *            the type of the wrapped indexed object used as the key of the
 *            entry
 */
public class IndexedBinaryPropertyChainEntry
		extends IndexedPropertyChainEntry {

	IndexedBinaryPropertyChainEntry(K representative) {
		super(representative);
	}

	@Override
	public int computeHashCode() {
		return combinedHashCode(IndexedBinaryPropertyChainEntry.class,
				this.key.getLeftProperty(), this.key.getRightProperty());
	}

	@Override
	public boolean equals(Object other) {
		if (this == other) {
			return true;
		}

		if (other instanceof IndexedBinaryPropertyChainEntry) {
			IndexedBinaryPropertyChainEntry otherEntry = (IndexedBinaryPropertyChainEntry) other;
			
			return this.key.getLeftProperty().equals(
					otherEntry.key.getLeftProperty())
					&& this.key.getRightProperty().equals(
							otherEntry.key.getRightProperty());
		} else {
			return false;
		}
	}
}