Coverage Summary for Class: UsingToStringOrdering (com.google.common.collect)

1 /*
2  * Copyright (C) 2007 The Guava Authors
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.google.common.collect;
18 
19 import com.google.common.annotations.GwtCompatible;
20 import java.io.Serializable;
21 
22 /** An ordering that uses the natural order of the string representation of the values. */
23 @GwtCompatible(serializable = true)
24 final class UsingToStringOrdering extends Ordering<Object> implements Serializable {
25   static final UsingToStringOrdering INSTANCE = new UsingToStringOrdering();
26 
27   @Override
28   public int compare(Object left, Object right) {
29     return left.toString().compareTo(right.toString());
30   }
31 
32   // preserve singleton-ness, so equals() and hashCode() work correctly
33   private Object readResolve() {
34     return INSTANCE;
35   }
36 
37   @Override
38   public String toString() {
39     return "Ordering.usingToString()";
40   }
41 
42   private UsingToStringOrdering() {}
43 
44   private static final long serialVersionUID = 0;
45 }