1 /*
2 * Copyright 2005 Ralf Joachim
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14 package org.castor.mapping;
15
16 import java.io.Serializable;
17 import java.util.HashMap;
18 import java.util.Iterator;
19 import java.util.Map;
20
21 /**
22 * @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
23 * @version $Revision: 5951 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $
24 */
25 public final class BindingType implements Cloneable, Comparable<BindingType>, Serializable {
26 // ------------------------------------------------------------------------
27
28 /** SerialVersionUID */
29 private static final long serialVersionUID = -2116844968191798202L;
30
31 private static final Map<String, BindingType> TYPES = new HashMap<>();
32
33 public static final BindingType JDO = new BindingType("jdo");
34 public static final BindingType XML = new BindingType("xml");
35
36 private final String _type;
37
38 // ------------------------------------------------------------------------
39
40 private BindingType(final String kind) {
41 _type = kind;
42 TYPES.put(kind, this);
43 }
44
45 public static BindingType valueOf(final String kind) {
46 return (BindingType) TYPES.get(kind);
47 }
48
49 public static Iterator<BindingType> iterator() {
50 return TYPES.values().iterator();
51 }
52
53 // ------------------------------------------------------------------------
54
55 /**
56 * Returns the String representation of this kind.
57 *
58 * @return String representation of this kind.
59 */
60 public String toString() {
61 return _type;
62 }
63
64 /**
65 * Clone only returns the one and only instance of this kind.
66 *
67 * @return The original instance.
68 */
69 public Object clone() {
70 return this;
71 }
72
73 /**
74 * Returns if the specified object and this are one and the same instance.
75 *
76 * @param other Object to be compared with this instance.
77 * @return <code>true</code> if other equals this else <code>false</code>.
78 */
79 public boolean equals(final Object other) {
80 return (this == other);
81 }
82
83 /**
84 * Returns the hash code of this object.
85 *
86 * @return Hash code of this object.
87 */
88 public int hashCode() {
89 return _type.hashCode();
90 }
91
92 /**
93 * Compares {@link #_type} against {@link #_type} of the specified object. So this method is
94 * inconsistent with {@link #equals}.
95 *
96 * @param other Object to be compared with this instance.
97 * @return A negative integer, zero, or a positive integer as this object is less than, equal to,
98 * or greater than the specified object.
99 */
100 public int compareTo(final BindingType other) {
101 return _type.compareTo(other._type);
102 }
103
104 /**
105 * Called during deserialization.
106 *
107 * @return The existing instance of the enum. <br>
108 * So you can use '==' like 'equals' even if you use a deserialized Enum.
109 */
110 protected Object readResolve() {
111 return TYPES.get(_type);
112 }
113
114 // ------------------------------------------------------------------------
115 }