/*
 * Copyright (C) 2013-2015 Matthias Heizmann (heizmann@informatik.uni-freiburg.de)
 * Copyright (C) 2009-2015 University of Freiburg
 *
 * This file is part of the ULTIMATE Util Library.
 *
 * The ULTIMATE Util Library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * The ULTIMATE Util Library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the ULTIMATE Util Library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Additional permission under GNU GPL version 3 section 7:
 * If you modify the ULTIMATE Util Library, or any covered work, by linking
 * or combining it with Eclipse RCP (or a modified version of Eclipse RCP),
 * containing parts covered by the terms of the Eclipse Public License, the
 * licensors of the ULTIMATE Util Library grant you additional permission
 * to convey the resulting work.
 */
package de.uni_freiburg.informatik.ultimate.util.datastructures.relation;

import java.util.HashMap;
import java.util.HashSet;

/**
 * Implementation of an {@link AbstractRelation} that uses a {@link HashMap}
 * for the mapping and a {@link HashSet} for the elements of the image.
 *
 * @author Matthias Heizmann (heizmann@informatik.uni-freiburg.de)
 */
public class HashRelation<D, R> extends AbstractRelation<D, R, HashSet<R>, HashMap<D, HashSet<R>>> {

	public HashRelation() {
		super();
	}

	public HashRelation(final AbstractRelation<D, R, ?, ?> rel) {
		super(rel);
	}

	@Override
	protected HashMap<D, HashSet<R>> newMap() {
		return new HashMap<>();
	}

	@Override
	protected HashSet<R> newSet() {
		return new HashSet<>();
	}


}