    001package net.sf.cpsolver.ifs.solver;
    002
    003import net.sf.cpsolver.ifs.model.Neighbour;
    004import net.sf.cpsolver.ifs.model.Value;
    005import net.sf.cpsolver.ifs.model.Variable;
    006
    007/**
    008 * IFS Solver Listener.
    009 *
    010 * @see Solver
    011 *
    012 * @version IFS 1.2 (Iterative Forward Search)<br>
    013 *          Copyright (C) 2006 - 2010 Tomáš Müller<br>
    014 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    015 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    016 * <br>
    017 *          This library is free software; you can redistribute it and/or modify
    018 *          it under the terms of the GNU Lesser General Public License as
    019 *          published by the Free Software Foundation; either version 3 of the
    020 *          License, or (at your option) any later version. <br>
    021 * <br>
    022 *          This library is distributed in the hope that it will be useful, but
    023 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    024 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    025 *          Lesser General Public License for more details. <br>
    026 * <br>
    027 *          You should have received a copy of the GNU Lesser General Public
    028 *          License along with this library; if not see <http://www.gnu.org/licenses/>.
    029 **/
    030public interface SolverListener<V extends Variable<V, T>, T extends Value<V, T>> {
    031
    032    /**
    033     * A variable was selected
    034     *
    035     * @param iteration
    036     *            current iteration
    037     * @param variable
    038     *            selected variable
    039     */
    040    public boolean variableSelected(long iteration, V variable);
    041
    042    /**
    043     * A value was selected
    044     *
    045     * @param iteration
    046     *            current iteration
    047     * @param variable
    048     *            selected variable
    049     * @param value
    050     *            selected variable
    051     */
    052    public boolean valueSelected(long iteration, V variable, T value);
    053
    054    /**
    055     * A neighbour was selected
    056     *
    057     * @param iteration
    058     *            current iteration
    059     * @param neighbour
    060     *            neighbour
    061     */
    062    public boolean neighbourSelected(long iteration, Neighbour<V, T> neighbour);
    063
    064}