//  ArrayRealAndBinarySolutionType.java
//
//  Author:
//       Antonio J. Nebro <antonio@lcc.uma.es>
//       Juan J. Durillo <durillo@lcc.uma.es>
// 
//  Copyright (c) 2011 Antonio J. Nebro, Juan J. Durillo
//
//  This program 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.
//
//  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 Lesser General Public License for more details.
// 
//  You should have received a copy of the GNU Lesser General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.

package jmetal.encodings.solutionType;

import jmetal.core.Problem;
import jmetal.core.SolutionType;
import jmetal.core.Variable;
import jmetal.encodings.variable.ArrayReal;
import jmetal.encodings.variable.Binary;

 /** 
 * Class representing the solution type of solutions composed of array of reals 
 * and a binary string.
 * ASSUMPTIONs:
 * - The numberOfVariables_ field in class Problem must contain the number
 *   of real variables. This field is used to apply real operators (e.g., 
 *   mutation probability)
 * - The upperLimit_ and lowerLimit_ arrays must have the length indicated
 *   by numberOfVariables_.
 */
public class ArrayRealAndBinarySolutionType extends SolutionType {

	private final int binaryStringLength_ ;
	private final int numberOfRealVariables_ ;
	/**
	 * Constructor
	 * @param problem Problem being solved
	 * @param realVariables Number of real variables
	 * @param binaryStringLength Length of the binary string
	 */
	public ArrayRealAndBinarySolutionType(Problem problem, 
			                                  int realVariables, 
			                                  int binaryStringLength) {
		super(problem) ;
		binaryStringLength_    = binaryStringLength ;
		numberOfRealVariables_ = realVariables ;
	} // Constructor

	/**
	 * Creates the variables of the solution
	 * @throws ClassNotFoundException
	 */
	public Variable[] createVariables() throws ClassNotFoundException {
		Variable [] variables = new Variable[2];

    variables[0] = new ArrayReal(numberOfRealVariables_, problem_);
    variables[1] = new Binary(binaryStringLength_); 
    return variables ;
	} // createVariables
} // ArrayRealAndBinarySolutionType

