/*******************************************************************************
* Breakout Cave Survey Visualizer
*
* Copyright (C) 2014 James Edwards
*
* jedwards8 at fastmail dot fm
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*******************************************************************************/
package org.andork.collect;
/**
* A {@link MultiMap} that is quickly invertible.
*
* @author james.a.edwards
*
* @param <K>
* the key type.
* @param <V>
* the value type.
*/
public interface InvertibleMultiMap<K, V> extends MultiMap<K, V> {
/**
* @return an {@link InvertibleMultiMap} where the key-value pairs have been
* reversed.
*/
public abstract InvertibleMultiMap<V, K> inverse();
}