001 /* 002 * Copyright (C) 2008-2010 by Holger Arndt 003 * 004 * This file is part of the Universal Java Matrix Package (UJMP). 005 * See the NOTICE file distributed with this work for additional 006 * information regarding copyright ownership and licensing. 007 * 008 * UJMP is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation; either version 2 011 * of the License, or (at your option) any later version. 012 * 013 * UJMP is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with UJMP; if not, write to the 020 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 021 * Boston, MA 02110-1301 USA 022 */ 023 024 package org.ujmp.core.util; 025 026 public class Sortable<C extends Comparable<C>, O> implements Comparable<Sortable<C, O>> { 027 028 private C comparable = null; 029 030 private O object = null; 031 032 private boolean compareObject = false; 033 034 public Sortable(C comparable, O object) { 035 this.comparable = comparable; 036 this.object = object; 037 } 038 039 public Sortable(C comparable, O object, boolean compareObject) { 040 this.comparable = comparable; 041 this.object = object; 042 this.compareObject = compareObject; 043 } 044 045 public C getComparable() { 046 return comparable; 047 } 048 049 public void setComparable(C comparable) { 050 this.comparable = comparable; 051 } 052 053 public O getObject() { 054 return object; 055 } 056 057 public void setObject(O object) { 058 this.object = object; 059 } 060 061 public String toString() { 062 return "" + comparable + ": " + object; 063 } 064 065 @SuppressWarnings("unchecked") 066 public int compareTo(Sortable<C, O> s) { 067 if (comparable == null) { 068 return Integer.MIN_VALUE; 069 } 070 int compObjectEqual = comparable.compareTo(s.comparable); 071 if (!compareObject || !(compObjectEqual == 0)) { 072 return compObjectEqual; 073 } 074 if (object == null) { 075 return Integer.MIN_VALUE; 076 } 077 return ((Comparable<O>) object).compareTo(s.object); 078 } 079 080 public boolean equals(Object obj) { 081 if (obj instanceof Sortable) { 082 Sortable<?, ?> s = (Sortable<?, ?>) obj; 083 Comparable<?> c = s.getComparable(); 084 Object o = s.getObject(); 085 if (comparable == null && c != null) { 086 return false; 087 } 088 if (comparable.equals(c)) { 089 return false; 090 } 091 if (object == null && o != null) { 092 return false; 093 } 094 if (object.equals(o)) { 095 return false; 096 } 097 return true; 098 } 099 return false; 100 } 101 102 public int hashCode() { 103 int hash = 0; 104 if (object != null) { 105 hash += object.hashCode(); 106 } 107 return hash; 108 } 109 110 }