001 /*
002 * Java Genetic Algorithm Library (jenetics-2.0.2).
003 * Copyright (c) 2007-2014 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.IOException;
023 import java.io.ObjectInputStream;
024 import java.io.ObjectOutputStream;
025 import java.io.Serializable;
026 import java.util.List;
027
028 import javax.xml.bind.annotation.XmlAccessType;
029 import javax.xml.bind.annotation.XmlAccessorType;
030 import javax.xml.bind.annotation.XmlAttribute;
031 import javax.xml.bind.annotation.XmlElement;
032 import javax.xml.bind.annotation.XmlRootElement;
033 import javax.xml.bind.annotation.XmlType;
034 import javax.xml.bind.annotation.adapters.XmlAdapter;
035 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
036
037 import org.jenetics.internal.util.HashBuilder;
038
039 import org.jenetics.util.Array;
040 import org.jenetics.util.Function;
041 import org.jenetics.util.ISeq;
042
043 /**
044 * Numeric chromosome implementation which holds 64 bit floating point numbers.
045 *
046 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
047 * @version 1.6 — <em>$Date: 2014-03-30 $</em>
048 * @since 1.6
049 */
050 @XmlJavaTypeAdapter(DoubleChromosome.Model.Adapter.class)
051 public class DoubleChromosome
052 extends AbstractNumericChromosome<Double, DoubleGene>
053 implements
054 NumericChromosome<Double, DoubleGene>,
055 Serializable
056 {
057 private static final long serialVersionUID = 1L;
058
059
060 protected DoubleChromosome(final ISeq<DoubleGene> genes) {
061 super(genes);
062 }
063
064 /**
065 * Create a new random {@code DoubleChromosome}.
066 *
067 * @param min the min value of the {@link DoubleGene}s (inclusively).
068 * @param max the max value of the {@link DoubleGene}s (exclusively).
069 * @param length the length of the chromosome.
070 * @throws NullPointerException if one of the arguments is {@code null}.
071 */
072 public DoubleChromosome(final Double min,final Double max,final int length) {
073 this(DoubleGene.seq(min, max, length));
074 _valid = true;
075 }
076
077 /**
078 * Create a new random {@code DoubleChromosome} of length one.
079 *
080 * @param min the minimal value of this chromosome (inclusively).
081 * @param max the maximal value of this chromosome (exclusively).
082 * @throws NullPointerException if one of the arguments is {@code null}.
083 */
084 public DoubleChromosome(final Double min, final Double max) {
085 this(min, max, 1);
086 }
087
088 /**
089 * Create a new {@code DoubleChromosome} with the given genes.
090 *
091 * @param genes the genes of the chromosome.
092 * @return a new chromosome with the given genes.
093 * @throws IllegalArgumentException if the length of the genes array is
094 * empty.
095 */
096 public static DoubleChromosome of(final DoubleGene... genes) {
097 return new DoubleChromosome(Array.of(genes).toISeq());
098 }
099
100 /**
101 * Create a new random {@code DoubleChromosome}.
102 *
103 * @param min the min value of the {@link DoubleGene}s (inclusively).
104 * @param max the max value of the {@link DoubleGene}s (exclusively).
105 * @param length the length of the chromosome.
106 * @return a new {@code DoubleChromosome} with the given parameter
107 */
108 public static DoubleChromosome of(final double min, double max, final int length) {
109 return new DoubleChromosome(min, max, length);
110 }
111
112 /**
113 * Create a new random {@code DoubleChromosome} of length one.
114 *
115 * @param min the minimal value of this chromosome (inclusively).
116 * @param max the maximal value of this chromosome (exclusively).
117 * @return a new {@code DoubleChromosome} with the given parameter
118 */
119 public static DoubleChromosome of(final double min, final double max) {
120 return new DoubleChromosome(min, max);
121 }
122
123 @Override
124 public DoubleChromosome newInstance(final ISeq<DoubleGene> genes) {
125 return new DoubleChromosome(genes);
126 }
127
128 @Override
129 public DoubleChromosome newInstance() {
130 return new DoubleChromosome(_min, _max, length());
131 }
132
133 @Override
134 public int hashCode() {
135 return HashBuilder.of(getClass()).and(super.hashCode()).value();
136 }
137
138 @Override
139 public boolean equals(final Object o) {
140 return o == this || o instanceof DoubleChromosome && super.equals(o);
141 }
142
143
144 /* *************************************************************************
145 * Java object serialization
146 * ************************************************************************/
147
148 private void writeObject(final ObjectOutputStream out)
149 throws IOException
150 {
151 out.defaultWriteObject();
152
153 out.writeInt(length());
154 out.writeDouble(_min.doubleValue());
155 out.writeDouble(_max.doubleValue());
156
157 for (DoubleGene gene : _genes) {
158 out.writeDouble(gene.getAllele().doubleValue());
159 }
160 }
161
162 private void readObject(final ObjectInputStream in)
163 throws IOException, ClassNotFoundException
164 {
165 in.defaultReadObject();
166
167 final Array<DoubleGene> genes = new Array<>(in.readInt());
168 _min = in.readDouble();
169 _max = in.readDouble();
170
171 for (int i = 0; i < genes.length(); ++i) {
172 genes.set(i, new DoubleGene(in.readDouble(), _min, _max));
173 }
174
175 _genes = genes.toISeq();
176 }
177
178 /* *************************************************************************
179 * JAXB object serialization
180 * ************************************************************************/
181
182 @XmlRootElement(name = "double-chromosome")
183 @XmlType(name = "org.jenetics.DoubleChromosome")
184 @XmlAccessorType(XmlAccessType.FIELD)
185 final static class Model {
186
187 @XmlAttribute(name = "length", required = true)
188 public int length;
189
190 @XmlAttribute(name = "min", required = true)
191 public double min;
192
193 @XmlAttribute(name = "max", required = true)
194 public double max;
195
196 @XmlElement(name = "allele", required = true, nillable = false)
197 public List<Double> values;
198
199 public final static class Adapter
200 extends XmlAdapter<Model, DoubleChromosome>
201 {
202 @Override
203 public Model marshal(final DoubleChromosome c) {
204 final Model m = new Model();
205 m.length = c.length();
206 m.min = c._min;
207 m.max = c._max;
208 m.values = c.toSeq().map(Allele).asList();
209 return m;
210 }
211
212 @Override
213 public DoubleChromosome unmarshal(final Model model) {
214 final Double min = model.min;
215 final Double max = model.max;
216 return new DoubleChromosome(
217 Array.of(model.values).map(Gene(min, max)).toISeq()
218 );
219 }
220 }
221
222 private static final Function<DoubleGene, Double> Allele =
223 new Function<DoubleGene, Double>() {
224 @Override
225 public Double apply(final DoubleGene value) {
226 return value.getAllele();
227 }
228 };
229
230 private static Function<Double, DoubleGene>
231 Gene(final Double min, final Double max) {
232 return new Function<Double, DoubleGene>() {
233 @Override
234 public DoubleGene apply(final Double value) {
235 return new DoubleGene(value, min, max);
236 }
237 };
238 }
239
240 }
241 }
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