001 /*
002 * Java Genetic Algorithm Library (jenetics-3.9.0).
003 * Copyright (c) 2007-2017 Franz Wilhelmstötter
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 *
017 * Author:
018 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
019 */
020 package org.jenetics;
021
022 import java.io.Serializable;
023
024 import javax.xml.bind.annotation.XmlAccessType;
025 import javax.xml.bind.annotation.XmlAccessorType;
026 import javax.xml.bind.annotation.XmlRootElement;
027 import javax.xml.bind.annotation.XmlType;
028 import javax.xml.bind.annotation.XmlValue;
029 import javax.xml.bind.annotation.adapters.XmlAdapter;
030 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
031
032 import org.jenetics.util.RandomRegistry;
033
034 /**
035 * Implementation of a BitGene.
036 *
037 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
038 * @since 1.0
039 * @version 2.0
040 */
041 @XmlJavaTypeAdapter(BitGene.Model.Adapter.class)
042 public enum BitGene
043 implements
044 Gene<Boolean, BitGene>,
045 Comparable<BitGene>,
046 Serializable
047 {
048
049 FALSE(false),
050 TRUE(true);
051
052 private static final long serialVersionUID = 3L;
053
054 public static final BitGene ZERO = FALSE;
055 public static final BitGene ONE = TRUE;
056
057 private final boolean _value;
058
059 private BitGene(final boolean value) {
060 _value = value;
061 }
062
063 /**
064 * Return the value of the BitGene.
065 *
066 * @return The value of the BitGene.
067 */
068 public final boolean getBit() {
069 return _value;
070 }
071
072 /**
073 * Return the {@code boolean} value of this gene.
074 *
075 * @see #getAllele()
076 *
077 * @return the {@code boolean} value of this gene.
078 */
079 public boolean booleanValue() {
080 return _value;
081 }
082
083 @Override
084 public Boolean getAllele() {
085 return _value;
086 }
087
088 /**
089 * Return always {@code true}.
090 *
091 * @return always {@code true}.
092 */
093 @Override
094 public boolean isValid() {
095 return true;
096 }
097
098 /**
099 * Create a new, <em>random</em> gene.
100 */
101 @Override
102 public BitGene newInstance() {
103 return RandomRegistry.getRandom().nextBoolean() ? TRUE : FALSE;
104 }
105
106 /**
107 * Create a new gene from the given {@code value}..
108 *
109 * @since 1.6
110 * @param value the value of the new gene.
111 * @return a new gene with the given value.
112 */
113 public BitGene newInstance(final Boolean value) {
114 return of(value);
115 }
116
117 @Override
118 public String toString() {
119 return Boolean.toString(_value);
120 }
121
122 /**
123 * Return the corresponding {@code BitGene} for the given {@code boolean}
124 * value.
125 *
126 * @param value the value of the returned {@code BitGene}.
127 * @return the {@code BitGene} for the given {@code boolean} value.
128 */
129 public static BitGene of(final boolean value) {
130 return value ? TRUE : FALSE;
131 }
132
133
134 /* *************************************************************************
135 * JAXB object serialization
136 * ************************************************************************/
137
138 @XmlRootElement(name = "bit-gene")
139 @XmlType(name = "org.jenetics.BitGene")
140 @XmlAccessorType(XmlAccessType.FIELD)
141 final static class Model {
142
143 @XmlValue
144 public boolean value;
145
146 public final static class Adapter
147 extends XmlAdapter<Model, BitGene>
148 {
149 @Override
150 public Model marshal(final BitGene value) {
151 final Model m = new Model();
152 m.value = value.booleanValue();
153 return m;
154 }
155
156 @Override
157 public BitGene unmarshal(final Model m) {
158 return BitGene.of(m.value);
159 }
160 }
161 }
162
163 }
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