/*
* Java Genetic Algorithm Library (@__identifier__@).
* Copyright (c) @__year__@ Franz Wilhelmstötter
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author:
* Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
*/
package org.jenetics;
import static org.jenetics.util.ISeq.toISeq;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import org.jenetics.internal.util.Equality;
import org.jenetics.internal.util.Hash;
import org.jenetics.util.DoubleRange;
import org.jenetics.util.ISeq;
import org.jenetics.util.MSeq;
/**
* Numeric chromosome implementation which holds 64 bit floating point numbers.
*
* @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
* @since 1.6
* @version 3.2
*/
@XmlJavaTypeAdapter(DoubleChromosome.Model.Adapter.class)
public class DoubleChromosome
extends AbstractBoundedChromosome<Double, DoubleGene>
implements
NumericChromosome<Double, DoubleGene>,
Serializable
{
private static final long serialVersionUID = 1L;
/**
* Create a new chromosome from the given genes array.
*
* @param genes the genes of the new chromosome.
* @throws IllegalArgumentException if the gene sequence is empty
* @throws NullPointerException if the {@code genes} are {@code null}.
*/
protected DoubleChromosome(final ISeq<DoubleGene> genes) {
super(genes);
}
/**
* Create a new random {@code DoubleChromosome}.
*
* @param min the min value of the {@link DoubleGene}s (inclusively).
* @param max the max value of the {@link DoubleGene}s (exclusively).
* @param length the length of the chromosome.
* @throws NullPointerException if one of the arguments is {@code null}.
* @throws IllegalArgumentException if the length is smaller than one
*/
public DoubleChromosome(final Double min,final Double max,final int length) {
this(DoubleGene.seq(min, max, length));
_valid = true;
}
/**
* Create a new random {@code DoubleChromosome} of length one.
*
* @param min the minimal value of this chromosome (inclusively).
* @param max the maximal value of this chromosome (exclusively).
* @throws NullPointerException if one of the arguments is {@code null}.
*/
public DoubleChromosome(final Double min, final Double max) {
this(min, max, 1);
}
/**
* Returns an double array containing all of the elements in this chromosome
* in proper sequence. If the chromosome fits in the specified array, it is
* returned therein. Otherwise, a new array is allocated with the length of
* this chromosome.
*
* @since 3.0
*
* @param array the array into which the elements of this chromosomes are to
* be stored, if it is big enough; otherwise, a new array is
* allocated for this purpose.
* @return an array containing the elements of this chromosome
* @throws NullPointerException if the given {@code array} is {@code null}
*/
public double[] toArray(final double[] array) {
final double[] a = array.length >= length() ?
array : new double[length()];
for (int i = length(); --i >= 0;) {
a[i] = doubleValue(i);
}
return a;
}
/**
* Returns an double array containing all of the elements in this chromosome
* in proper sequence.
*
* @since 3.0
*
* @return an array containing the elements of this chromosome
*/
public double[] toArray() {
return toArray(new double[length()]);
}
/**
* Create a new {@code DoubleChromosome} with the given genes.
*
* @param genes the genes of the chromosome.
* @return a new chromosome with the given genes.
* @throws IllegalArgumentException if the length of the genes array is
* empty.
*/
public static DoubleChromosome of(final DoubleGene... genes) {
return new DoubleChromosome(ISeq.of(genes));
}
/**
* Create a new random {@code DoubleChromosome}.
*
* @param min the min value of the {@link DoubleGene}s (inclusively).
* @param max the max value of the {@link DoubleGene}s (exclusively).
* @param length the length of the chromosome.
* @return a new {@code DoubleChromosome} with the given parameter
* @throws IllegalArgumentException if the {@code length} is smaller than
* one.
*/
public static DoubleChromosome of(
final double min,
double max,
final int length
) {
return new DoubleChromosome(min, max, length);
}
/**
* Create a new random {@code DoubleChromosome}.
*
* @since 3.2
*
* @param range the integer range of the chromosome.
* @param length the length of the chromosome.
* @return a new random {@code DoubleChromosome}
* @throws NullPointerException if the given {@code range} is {@code null}
* @throws IllegalArgumentException if the {@code length} is smaller than
* one.
*/
public static DoubleChromosome of(final DoubleRange range, final int length) {
return new DoubleChromosome(range.getMin(), range.getMax(), length);
}
/**
* Create a new random {@code DoubleChromosome} of length one.
*
* @param min the minimal value of this chromosome (inclusively).
* @param max the maximal value of this chromosome (exclusively).
* @return a new {@code DoubleChromosome} with the given parameter
*/
public static DoubleChromosome of(final double min, final double max) {
return new DoubleChromosome(min, max);
}
/**
* Create a new random {@code DoubleChromosome} of length one.
*
* @since 3.2
*
* @param range the double range of the chromosome.
* @return a new random {@code DoubleChromosome} of length one
* @throws NullPointerException if the given {@code range} is {@code null}
*/
public static DoubleChromosome of(final DoubleRange range) {
return new DoubleChromosome(range.getMin(), range.getMax());
}
@Override
public DoubleChromosome newInstance(final ISeq<DoubleGene> genes) {
return new DoubleChromosome(genes);
}
@Override
public DoubleChromosome newInstance() {
return new DoubleChromosome(_min, _max, length());
}
@Override
public int hashCode() {
return Hash.of(getClass()).and(super.hashCode()).value();
}
@Override
public boolean equals(final Object obj) {
return Equality.of(this, obj).test(super::equals);
}
/* *************************************************************************
* Java object serialization
* ************************************************************************/
private void writeObject(final ObjectOutputStream out)
throws IOException
{
out.defaultWriteObject();
out.writeInt(length());
out.writeDouble(_min);
out.writeDouble(_max);
for (DoubleGene gene : _genes) {
out.writeDouble(gene.getAllele());
}
}
private void readObject(final ObjectInputStream in)
throws IOException, ClassNotFoundException
{
in.defaultReadObject();
final MSeq<DoubleGene> genes = MSeq.ofLength(in.readInt());
_min = in.readDouble();
_max = in.readDouble();
for (int i = 0; i < genes.length(); ++i) {
genes.set(i, new DoubleGene(in.readDouble(), _min, _max));
}
_genes = genes.toISeq();
}
/* *************************************************************************
* JAXB object serialization
* ************************************************************************/
@XmlRootElement(name = "double-chromosome")
@XmlType(name = "org.jenetics.DoubleChromosome")
@XmlAccessorType(XmlAccessType.FIELD)
final static class Model {
@XmlAttribute(name = "length", required = true)
public int length;
@XmlAttribute(name = "min", required = true)
public double min;
@XmlAttribute(name = "max", required = true)
public double max;
@XmlElement(name = "allele", required = true, nillable = false)
public List<Double> values;
public final static class Adapter
extends XmlAdapter<Model, DoubleChromosome>
{
@Override
public Model marshal(final DoubleChromosome c) {
final Model m = new Model();
m.length = c.length();
m.min = c._min;
m.max = c._max;
m.values = c.toSeq().map(DoubleGene::getAllele).asList();
return m;
}
@Override
public DoubleChromosome unmarshal(final Model model) {
final Double min = model.min;
final Double max = model.max;
return new DoubleChromosome(
model.values.stream()
.map(value -> new DoubleGene(value, min, max))
.collect(toISeq())
);
}
}
}
}