1090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2007 The Guava Authors 3090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 4090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Licensed under the Apache License, Version 2.0 (the "License"); 5090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * you may not use this file except in compliance with the License. 6090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * You may obtain a copy of the License at 7090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 8090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 9090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * 10090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * Unless required by applicable law or agreed to in writing, software 11090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 12090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * See the License for the specific language governing permissions and 14090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson * limitations under the License. 15090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson */ 16090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 17090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonpackage com.google.common.collect; 18090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 19090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonimport com.google.common.annotations.GwtCompatible; 20090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 21090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonimport java.io.Serializable; 22090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 23090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson/** An ordering that uses the reverse of the natural order of the values. */ 24090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson@GwtCompatible(serializable = true) 25090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilsonfinal class UsingToStringOrdering 26090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson extends Ordering<Object> implements Serializable { 27090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson static final UsingToStringOrdering INSTANCE = new UsingToStringOrdering(); 28090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @Override public int compare(Object left, Object right) { 30090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson return left.toString().compareTo(right.toString()); 31090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 32090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 33090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson // preserve singleton-ness, so equals() and hashCode() work correctly 34090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson private Object readResolve() { 35090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson return INSTANCE; 36090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 37090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 38090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson @Override public String toString() { 39090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson return "Ordering.usingToString()"; 40090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson } 41090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 42090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson private UsingToStringOrdering() {} 43090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson 44090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson private static final long serialVersionUID = 0; 45090f9b4c879985bc747c214f82c62471e60c7742Jesse Wilson} 46