    001package org.cpsolver.ifs.assignment.context;
    002
    003import org.cpsolver.ifs.assignment.Assignment;
    004import org.cpsolver.ifs.model.Value;
    005import org.cpsolver.ifs.model.Variable;
    006
    007/**
    008 * An extension of the simple {@link AssignmentContext} which is used by the
    009 * {@link ConstraintWithContext} class. The notification methods assigned and unassigned
    010 * are automatically called by the constraint whenever a variable of the constraint
    011 * is assigned or unassigned respectively.
    012 *
    013 * @see ConstraintWithContext
    014 *
    015 * @version IFS 1.3 (Iterative Forward Search)<br>
    016 *          Copyright (C) 2014 Tomáš Müller<br>
    017 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    018 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    019 * <br>
    020 *          This library is free software; you can redistribute it and/or modify
    021 *          it under the terms of the GNU Lesser General Public License as
    022 *          published by the Free Software Foundation; either version 3 of the
    023 *          License, or (at your option) any later version. <br>
    024 * <br>
    025 *          This library is distributed in the hope that it will be useful, but
    026 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    027 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    028 *          Lesser General Public License for more details. <br>
    029 * <br>
    030 *          You should have received a copy of the GNU Lesser General Public
    031 *          License along with this library; if not see <a href='http://www.gnu.org/licenses'>http://www.gnu.org/licenses</a>.
    032 * @param <V> Variable
    033 * @param <T> Value
    034 **/
    035public interface AssignmentConstraintContext<V extends Variable<V, T>, T extends Value<V, T>> extends AssignmentContext {
    036
    037    /**
    038     * Called when {@link ConstraintWithContext#assigned(Assignment, long, Value)} is called to update
    039     * the content of the context.
    040     * @param assignment current assignment (with which this context is associated)
    041     * @param value assigned value
    042     */
    043    public void assigned(Assignment<V,T> assignment, T value);
    044
    045    /**
    046     * Called when {@link ConstraintWithContext#unassigned(Assignment, long, Value)} is called to update
    047     * the content of the context.
    048     * @param assignment current assignment (with which this context is associated)
    049     * @param value unassigned value
    050     */
    051    public void unassigned(Assignment<V,T> assignment, T value);
    052
    053}