source: branches/2457_ExpertSystem/HeuristicLab.Problems.GeneralizedQuadraticAssignment.Algorithms/3.3/CPLEX/GQAPDataSource.cs

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2017 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab 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.
 *
 * HeuristicLab 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 HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using HeuristicLab.Data;
using ILOG.OPL;

namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment.Algorithms.CPLEX {
  public class GQAPDataSource : CustomOplDataSource {
    protected GQAPInstance Instance { get; set; }

    public GQAPDataSource(OplFactory factory, GQAPInstance instance)
      : base(factory) {
      Instance = instance;
    }

    public override void CustomRead() {
      NewElement("EQUIPMENTS", () => Add(Instance.Demands.Length));
      NewElement("LOCATIONS", () => Add(Instance.Capacities.Length));
      NewElement("TC", () => Add(Instance.TransportationCosts));
      NewElement("weights", () => Add(Instance.Weights));
      NewElement("distances", () => Add(Instance.Distances));
      NewElement("install", () => Add(Instance.InstallationCosts));
      NewElement("demands", () => Add(Instance.Demands));
      NewElement("capacities", () => Add(Instance.Capacities));
    }

    protected void NewElement(string name, Action add) {
      DataHandler.StartElement(name);
      add();
      DataHandler.EndElement();
    }
    protected void Add(int value) {
      DataHandler.AddIntItem(value);
    }
    protected void Add(double value) {
      DataHandler.AddNumItem(value);
    }

    protected void Add(DoubleArray values) {
      DataHandler.StartArray();
      for (var i = 0; i < values.Length; i++) {
        Add(values[i]);
      }
      DataHandler.EndArray();
    }

    protected void Add(DoubleMatrix values) {
      DataHandler.StartArray();
      for (var i = 0; i < values.Rows; i++) {
        DataHandler.StartArray();
        for (var j = 0; j < values.Columns; j++) {
          Add(values[i, j]);
        }
        DataHandler.EndArray();
      }
      DataHandler.EndArray();
    }
  }
}