001/*
002 * Java Genetic Algorithm Library (jenetics-7.1.0).
003 * Copyright (c) 2007-2022 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@gmail.com)
019 */
020package io.jenetics.internal.collection;
021
022import static java.util.Arrays.copyOfRange;
023import static java.util.Objects.requireNonNull;
024import static io.jenetics.internal.util.SerialIO.readObjectArray;
025import static io.jenetics.internal.util.SerialIO.writeObjectArray;
026
027import java.io.IOException;
028import java.io.InvalidObjectException;
029import java.io.ObjectInput;
030import java.io.ObjectInputStream;
031import java.io.ObjectOutput;
032import java.io.Serial;
033import java.io.Serializable;
034import java.util.Arrays;
035import java.util.Comparator;
036
037import io.jenetics.internal.collection.Array.Store;
038
039/**
040 * @author <a href="mailto:franz.wilhelmstoetter@gmail.com">Franz Wilhelmstötter</a>
041 * @version 6.0
042 * @since 6.0
043 */
044public final class ObjectStore<T> implements Store<T>, Serializable {
045
046        @Serial
047        private static final long serialVersionUID = 2L;
048
049        private final Object[] _array;
050
051        private ObjectStore(final Object[] array) {
052                _array = requireNonNull(array);
053        }
054
055        @Override
056        public void set(final int index, T value) {
057                _array[index] = value;
058        }
059
060        @Override
061        @SuppressWarnings("unchecked")
062        public T get(final int index) {
063                return (T)_array[index];
064        }
065
066        @Override
067        @SuppressWarnings("unchecked")
068        public void sort(
069                final int from,
070                final int until,
071                final Comparator<? super T> comparator
072        ) {
073                Arrays.sort((T[])_array, from, until, comparator);
074        }
075
076        @Override
077        public ObjectStore<T> copy(final int from, final int until) {
078                return new ObjectStore<>(copyOfRange(_array, from, until));
079        }
080
081        @Override
082        public ObjectStore<T> newInstance(final int length) {
083                return ofLength(length);
084        }
085
086        @Override
087        public int length() {
088                return _array.length;
089        }
090
091        public static <T> ObjectStore<T> of(final Object[] array) {
092                return new ObjectStore<>(array);
093        }
094
095        public static <T> ObjectStore<T> ofLength(final int length) {
096                return new ObjectStore<>(new Object[length]);
097        }
098
099
100        /* *************************************************************************
101         *  Java object serialization
102         * ************************************************************************/
103
104        @Serial
105        private Object writeReplace() {
106                return new SerialProxy(SerialProxy.OBJECT_STORE, this);
107        }
108
109        @Serial
110        private void readObject(final ObjectInputStream stream)
111                throws InvalidObjectException
112        {
113                throw new InvalidObjectException("Serialization proxy required.");
114        }
115
116        void write(final ObjectOutput out) throws IOException {
117                writeObjectArray(_array, out);
118        }
119
120        @SuppressWarnings("rawtypes")
121        static Object read(final ObjectInput in)
122                throws IOException, ClassNotFoundException
123        {
124                return new ObjectStore(readObjectArray(in));
125        }
126
127}