1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using Google.OrTools.LinearSolver;
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23 | using HeuristicLab.Common;
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24 | using HeuristicLab.Core;
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25 | using HeuristicLab.Data;
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26 | using HeuristicLab.Parameters;
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27 | using HEAL.Attic;
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28 |
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29 | namespace HeuristicLab.ExactOptimization.LinearProgramming {
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30 |
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31 | [Item("GLPK", "GLPK (https://www.gnu.org/software/glpk/) can be used out of the box.")]
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32 | [StorableType("CD1F0577-D68A-483B-8811-17E04573B3F2")]
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33 | public class GlpkSolver : ExternalLinearSolver {
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34 |
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35 | public GlpkSolver() {
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36 | Parameters.Remove(solverSpecificParametersParam);
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37 | Parameters.Add(libraryNameParam = new FixedValueParameter<FileValue>(nameof(LibraryName),
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38 | new FileValue { FileDialogFilter = FileDialogFilter, Value = Properties.Settings.Default.GlpkLibraryName }));
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39 | }
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40 |
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41 | protected GlpkSolver(GlpkSolver original, Cloner cloner)
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42 | : base(original, cloner) {
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43 | }
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44 |
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45 | [StorableConstructor]
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46 | protected GlpkSolver(StorableConstructorFlag _) : base(_) { }
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47 |
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48 | public override bool SupportsPause => false;
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49 |
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50 | protected override Solver.OptimizationProblemType OptimizationProblemType =>
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51 | ProblemType == ProblemType.LinearProgramming
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52 | ? Solver.OptimizationProblemType.GlpkLinearProgramming
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53 | : Solver.OptimizationProblemType.GlpkMixedIntegerProgramming;
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54 |
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55 | public override IDeepCloneable Clone(Cloner cloner) => new GlpkSolver(this, cloner);
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56 | }
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57 | }
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