001package org.cpsolver.coursett.preference; 002 003/** 004 * Min-max preference combination. <br> 005 * <ul> 006 * <li>If at least one preference is required → required 007 * <li>If at least one preference is prohibited → prohibited 008 * <li>If max>-min → max 009 * <li>If -min>max → min 010 * <li>Otherwise → 0 011 * </ul> 012 * 013 * @version CourseTT 1.3 (University Course Timetabling)<br> 014 * Copyright (C) 2006 - 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 030 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 031 */ 032public class MinMaxPreferenceCombination extends PreferenceCombination { 033 int iPreferenceMin = 0; 034 int iPreferenceMax = 0; 035 036 @Override 037 public void addPreferenceInt(int intPref) { 038 super.addPreferenceInt(intPref); 039 iPreferenceMax = Math.max(iPreferenceMax, intPref); 040 iPreferenceMin = Math.min(iPreferenceMin, intPref); 041 } 042 043 @Override 044 public int getPreferenceInt() { 045 return (iPreferenceMax > -iPreferenceMin ? iPreferenceMax : -iPreferenceMin > iPreferenceMax ? iPreferenceMin 046 : iPreferenceMax); 047 } 048}