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/*
 * Copyright (c) 2006 Thomas Weise
 *
 * E-Mail           : tweise@gmx.de
 * Creation Date    : 2006-04-10 17:30:36
 * Original Filename: org.dgpf.search.api.SearchData3.java
 * Version          : 2.0.2
 * Last modification: 2006-06-26
 *                by: Thomas Weise
 *
 * License          : GNU LESSER GENERAL PUBLIC LICENSE
 *                    Version 2.1, February 1999
 *                    You should have received a copy of this license along
 *                    with this library; if not, write to the Free Software
 *                    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *                    MA 02111-1307, USA or download the license under
 *                    http://www.gnu.org/copyleft/lesser.html.
 *
 * Warranty         : This software is provided "as is" 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.
 */


package org.dgpf.search.api;

import java.io.Serializable;

import org.sfc.meta.MetaInformation;
import org.sfc.meta.Property;
import org.sfc.utils.Typesafe;

/**
 * This class holds some additional search information.
 *
 * @param <Genotype>    The sort of genotype used to represent individuals.
 *                      This must be a serializable type.
 *
 * @author Thomas Weise
 */

public  class SearchData3<Genotype extends Serializable>
                                   extends SearchData2<Genotype>
  {
/**
 * The serial version uid.
 */

  private static final long serialVersionUID = 1;
  

/**
 * The meta information of the search data 3 - class.
 */

  public  static  final MetaInformation                SEARCH_DATA3_METAINFO ;
/**
 * The property for the best individual.
 */

  public  static  final Property<FitnessFunction<?,?>> FITNESS_FUNCTION ;
  
  static
    {
    Class<FitnessFunction<?,?>> l_c;
    
    l_c = Typesafe.cast(FitnessFunction.class);
    FITNESS_FUNCTION = new Property<FitnessFunction<?,?>>(
                        "fitness_function",
                        SearchUtils.CONTROL_PROPERTIES,
                        l_c);
    FITNESS_FUNCTION.add_port(SearchData3.class, true, false,
                              SearchUtils.FITNESS_FUNCTION_COUNT_FUNC);
    
    SEARCH_DATA3_METAINFO = new MetaInformation();
    }
  
/**
 * The fitness functions to be applied in this evolution.
 * @see #get_fitness_function(int)
 * @see #get_fitness_function_count()
 */

            final FitnessFunction<Genotype, ?>[]   m_functions  ;
/**
 * The invokation cache.
 */

            final long[]                           m_invoke     ;

/**
 * The count of steps to perform fluently between two inspections.
 */

            final long                             m_gcd        ;

/**
 * Create a new search definition.
 * @param p_definition  The search definition to use as blueprint for the
 *                      internally stored data.
 */

  SearchData3 (final SearchDefinition<Genotype> p_definition)
    {
    super(p_definition);

    this.m_functions = p_definition.m_functions;
    this.m_gcd       = p_definition.m_gcd;
    this.m_invoke    = p_definition.m_invoke;
    }

/**
 * Create a new search definition.
 * @param p_functions   The fitness functions to be applied in this
 *                      evolution.
 */

  SearchData3 (final FitnessFunction<Genotype,?>[]  p_functions)
    {
    super(p_functions.length);

    long[]  l_iv;
    long    l_gcd, l_d;
    int     l_c;

    l_c     = p_functions.length;
    l_iv    = new long[l_c];
    
    if(l_c > 0)
      {      
      l_gcd   = p_functions[0].get_inspection_steps();
      l_iv[0] = l_gcd;
  
      for(--l_c; l_c > 0; l_c--)
        {
        l_d       = p_functions[l_c].get_inspection_steps();
        l_iv[l_c] = l_d;
        if(l_gcd <= 0)   l_gcd = l_d;
        else if(l_d > 0) l_gcd = gcd(l_gcd, l_d);
        }
      }
    else l_gcd = -1;

    this.m_gcd                  = l_gcd;
    this.m_invoke               = l_iv;
    this.m_functions            = p_functions.clone();
    }


/**
 * Obtain a specific fitness function.
 * @param p_index The index of the fitness function to be returned.
 * @return  The fitness function at index <code>p_index</code>.
 */

  public  final FitnessFunction<Genotype,?> get_fitness_function
                                                (final int p_index)
    {
    return this.m_functions[p_index];
    }


/**
 * Calculate the gcd.
 * @param p_p1  The 1st parameter.
 * @param p_p2  The 2nd parameter.
 * @return  The gcd.
 */

  private static  final long gcd (long  p_p1,
                                  long  p_p2)
    {
    while(p_p1 != p_p2)
      {
      if(p_p1 > p_p2)
        {
        p_p1 -= p_p2;
        }
      else
        {
        p_p2 -= p_p1;
        }
      }

    return p_p1;
    }
  }

File Information:

file name:SearchData3.java
package:org.dgpf.search.api
qualified name:org.dgpf.search.api.SearchData3.java
file type:Java Source File
download location:download http://dgpf.sourceforge.net/source/org/dgpf/search/api/SearchData3.java
size:4.995 KB (5115 B)
uploaded: 2015-07-22 04:11:00 GMT+0000
last update: 2006-06-26 12:40:12 GMT+0000
last access: 2017-11-21 15:38:38 GMT+0000

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