ComparadorAtributo.java

/***********************************************************************

	This file is part of KEEL-software, the Data Mining tool for regression, 
	classification, clustering, pattern mining and so on.

	Copyright (C) 2004-2010
	
	F. Herrera (herrera@decsai.ugr.es)
    L. S�nchez (luciano@uniovi.es)
    J. Alcal�-Fdez (jalcala@decsai.ugr.es)
    S. Garc�a (sglopez@ujaen.es)
    A. Fern�ndez (alberto.fernandez@ujaen.es)
    J. Luengo (julianlm@decsai.ugr.es)

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program 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 General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see http://www.gnu.org/licenses/
  
**********************************************************************/

package keel.Algorithms.Genetic_Rule_Learning.Advanced_Ant_Miner;

import java.util.Comparator;

/**
 * <p>T�tulo: Ant Colony Optimization</p>
 * <p>Descripci�n:Comparador entre atributos</p>
 * <p>Copyright: Copyright (c) 2007</p>
 * @author Vicente Rub�n del Pino Ruiz
 * @version 1.0
 */

public class ComparadorAtributo implements Comparator {

  public ComparadorAtributo() {
  }

  /**
   * Compara dos atributos
   *
   * @param o1 Object Atributo a comparar
   * @param o2 Object Atributo a comparar
   * @return int Devuelve 0 si tienen la misma posicion, 1 si el primero esta
   * antes, -1 si el primero esta despues.
   *
   * OJO!!!! Como el Collections.sort ordena de mayor a menor y el orden que interesa
   * que tengan los atributos es de menor a mayor, este CompareTo esta trucado al reves
   * es decir cuando es menor devuelve mayor y cuando es mayor devuelve menor.
   *
   */
  public int compare(Object o1, Object o2){
    Atributo original= (Atributo) o1;
    Atributo actual=(Atributo)o2;
    int atributo1, atributo2;
    String valor1, valor2;
    int devolver=0;

    atributo1=original.getAtributo();
    atributo2=actual.getAtributo();
    valor1=original.getValor();
    valor2=actual.getValor();

    if(atributo1==atributo2 && valor1.equals(valor2))//Para ver si son iguales tiene que coincidir tambien el valor
      devolver=0;
    else{
      if (atributo1 < atributo2)
        devolver = -1;
      else{
        if (atributo1 > atributo2)
          devolver = 1;
      }
    }
    return devolver;

  }

  }