    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  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    package org.apache.commons.math3.genetics;
    018
    019    import org.apache.commons.math3.exception.MathIllegalArgumentException;
    020
    021    /**
    022     * Policy used to create a pair of new chromosomes by performing a crossover
    023     * operation on a source pair of chromosomes.
    024     *
    025     * @since 2.0
    026     * @version $Id: CrossoverPolicy.java 1416643 2012-12-03 19:37:14Z tn $
    027     */
    028    public interface CrossoverPolicy {
    029
    030        /**
    031         * Perform a crossover operation on the given chromosomes.
    032         *
    033         * @param first the first chromosome.
    034         * @param second the second chromosome.
    035         * @return the pair of new chromosomes that resulted from the crossover.
    036         * @throws MathIllegalArgumentException if the given chromosomes are not compatible with this {@link CrossoverPolicy}
    037         */
    038        ChromosomePair crossover(Chromosome first, Chromosome second) throws MathIllegalArgumentException;
    039    }