1 /*
2 * Copyright 2006-2007 the original author or 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 net.sf.ezmorph.object;
18
19 import net.sf.ezmorph.ObjectMorpher;
20
21 /**
22 * Morpher that performs no conversion.<br>
23 * This morpher is a singleton.
24 *
25 * @author Andres Almiray <aalmiray@users.sourceforge.net>
26 */
27 public final class IdentityObjectMorpher implements ObjectMorpher
28 {
29 private static final IdentityObjectMorpher INSTANCE = new IdentityObjectMorpher();
30
31 /**
32 * Returns the singleton instance
33 */
34 public static IdentityObjectMorpher getInstance()
35 {
36 return INSTANCE;
37 }
38
39 private IdentityObjectMorpher()
40 {
41 }
42
43 public boolean equals( Object obj )
44 {
45 return INSTANCE == obj;
46 }
47
48 public int hashCode()
49 {
50 return 42 + getClass().hashCode();
51 }
52
53 public Object morph( Object value )
54 {
55 return value;
56 }
57
58 public Class morphsTo()
59 {
60 return Object.class;
61 }
62
63 public boolean supports( Class clazz )
64 {
65 return true;
66 }
67 }