11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2009 The Guava Authors 31d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 41d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Licensed under the Apache License, Version 2.0 (the "License"); 51d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * you may not use this file except in compliance with the License. 61d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * You may obtain a copy of the License at 71d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 81d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://www.apache.org/licenses/LICENSE-2.0 91d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unless required by applicable law or agreed to in writing, software 111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * distributed under the License is distributed on an "AS IS" BASIS, 121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * See the License for the specific language governing permissions and 141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * limitations under the License. 151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpackage com.google.common.collect; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.annotations.GwtCompatible; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.io.Serializable; 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.util.Arrays; 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * A class that implements {@code Comparable} without generics, such as those 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * found in libraries that support Java 1.4 and before. Our library needs to 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * do the bare minimum to accommodate such types, though their use may still 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * require an explicit type parameter and/or warning suppression. 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Kevin Bourrillion 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert@GwtCompatible 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertclass LegacyComparable implements Comparable, Serializable { 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final LegacyComparable X = new LegacyComparable("x"); 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final LegacyComparable Y = new LegacyComparable("y"); 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final LegacyComparable Z = new LegacyComparable("z"); 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final Iterable<LegacyComparable> VALUES_FORWARD 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Arrays.asList(X, Y, Z); 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert static final Iterable<LegacyComparable> VALUES_BACKWARD 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert = Arrays.asList(Z, Y, X); 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private final String value; 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert LegacyComparable(String value) { 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert this.value = value; 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public int compareTo(Object object) { 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // This method is spec'd to throw CCE if object is of the wrong type 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert LegacyComparable that = (LegacyComparable) object; 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return this.value.compareTo(that.value); 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public boolean equals(Object object) { 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert if (object instanceof LegacyComparable) { 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert LegacyComparable that = (LegacyComparable) object; 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return this.value.equals(that.value); 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return false; 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public int hashCode() { 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert return value.hashCode(); 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private static final long serialVersionUID = 0; 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 70