com.jonschang.ai.ga.SpringGeneticAlgFactory.java Source code

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Here is the source code for com.jonschang.ai.ga.SpringGeneticAlgFactory.java

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/*
###############################
# Copyright (C) 2012 Jon Schang
# 
# This file is part of jSchangLib, released under the LGPLv3
# 
# jSchangLib is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# jSchangLib is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public License
# along with jSchangLib.  If not, see <http://www.gnu.org/licenses/>.
###############################
*/

package com.jonschang.ai.ga;

import java.util.*;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.*;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.*;

/**
 * A GeneticAlgFactory using Spring-bean prototypes.
 * 
 * @author schang
 *
 * @param <P>
 * @param <G>
 */
public class SpringGeneticAlgFactory<P extends Phenotype<G>, G extends Gene>
        implements GeneticAlgFactory<P, G>, BeanFactoryAware {

    List<String> genes = null;
    private String phenotypeBeanName = "phenotype";
    private String fitnessFunctionBeanName = "fitness-function";

    private BeanFactory beanFactory = null;

    public void setBeanFactory(BeanFactory factory) throws BeansException {
        this.beanFactory = factory;
    }

    public BeanFactory getBeanFactory() {
        return beanFactory;
    }

    public void setGeneBeanNames(List<String> beanNames) {
        genes = beanNames;
    }

    public List<String> getGeneBeanNames() {
        return genes;
    }

    public void setPhenotypeBeanName(String beanName) {
        phenotypeBeanName = beanName;
    }

    public String getPhenotypeBeanName() {
        return phenotypeBeanName;
    }

    public void setFitnessFunctionBeanName(String beanName) {
        fitnessFunctionBeanName = beanName;
    }

    public String getFitnessFunctionBeanName() {
        return fitnessFunctionBeanName;
    }

    @Override
    public G newGene(String name) throws GeneticAlgException {
        Object o = beanFactory.getBean(name);
        if (o instanceof Gene)
            return (G) o;
        else
            throw new GeneticAlgException(name + " was unusable.  A Gene must implement the Gene interface.");
    }

    @Override
    public G newGene() throws GeneticAlgException {
        Collections.shuffle(genes);
        return newGene(genes.get(0));
    }

    @Override
    public P newPhenotype() {
        Object o = beanFactory.getBean(phenotypeBeanName);
        if (o instanceof GenericPhenotype) {
            ((GenericPhenotype) o).setFactory(this);
            return (P) o;
        }
        return null;
    }

    @Override
    public FitnessFunction<P, G> newFitnessFunction() {
        return (FitnessFunction<P, G>) beanFactory.getBean(fitnessFunctionBeanName);
    }

}