001package org.cpsolver.ifs.assignment;
002
003import org.cpsolver.ifs.model.Value;
004import org.cpsolver.ifs.model.Variable;
005
006/**
007 * An assignment inherited from some other assignment with only a few local
008 * modifications. This can be used to pass a "copy" of an assignment to a neighbor
009 * selection. 
010 * 
011 * @see Assignment
012 * 
013 * @version IFS 1.3 (Iterative Forward Search)<br>
014 *          Copyright (C) 2014 Tomáš Müller<br>
015 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
016 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
017 * <br>
018 *          This library is free software; you can redistribute it and/or modify
019 *          it under the terms of the GNU Lesser General Public License as
020 *          published by the Free Software Foundation; either version 3 of the
021 *          License, or (at your option) any later version. <br>
022 * <br>
023 *          This library is distributed in the hope that it will be useful, but
024 *          WITHOUT ANY WARRANTY; without even the implied warranty of
025 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
026 *          Lesser General Public License for more details. <br>
027 * <br>
028 *          You should have received a copy of the GNU Lesser General Public
029 *          License along with this library; if not see <a href='http://www.gnu.org/licenses'>http://www.gnu.org/licenses</a>.
030 * @param <V> Variable
031 * @param <T> Value
032 **/
033public interface InheritedAssignment<V extends Variable<V, T>, T extends Value<V, T>> extends Assignment<V, T> {
034    
035    /**
036     * Return parent assignment.
037     * @return parent assignment
038     */
039    public Assignment<V, T> getParentAssignment();
040    
041    /**
042     * Version of the assignment (usually the iteration of the parent assignment at the time of creation)
043     * @return version of the inherited assignment
044     */
045    public long getVersion();
046}