| 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 System;
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| 23 | using Google.OrTools.LinearSolver;
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| 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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| 26 | using HeuristicLab.Data;
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| 27 | using HeuristicLab.Parameters;
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| 28 | using HEAL.Attic;
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| 29 |
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| 30 | namespace HeuristicLab.ExactOptimization.LinearProgramming {
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| 31 |
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| 32 | [Item("CPLEX", "CPLEX (https://www.ibm.com/analytics/cplex-optimizer) must be installed and licensed.")]
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| 33 | [StorableType("E3478254-F3A8-4085-A9DA-DB79D0A50347")]
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| 34 | public class CplexSolver : ExternalIncrementalLinearSolver {
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| 35 |
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| 36 | public CplexSolver() {
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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.CplexLibraryName }));
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| 39 | SolverSpecificParameters =
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| 40 | "CPLEX Parameter File Version 12.8.0" + Environment.NewLine +
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| 41 | "# for file format, see https://www.ibm.com/support/knowledgecenter/SSSA5P_12.8.0/ilog.odms.cplex.help/CPLEX/FileFormats/topics/PRM.html" + Environment.NewLine +
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| 42 | "# for parameters, see https://www.ibm.com/support/knowledgecenter/SSSA5P_12.8.0/ilog.odms.cplex.help/CPLEX/Parameters/topics/introListTopical.html" + Environment.NewLine +
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| 43 | "# examples:" + Environment.NewLine +
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| 44 | "# CPXPARAM_RandomSeed 10" + Environment.NewLine +
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| 45 | "# CPXPARAM_LPMethod 4 # Barrier (LP)" + Environment.NewLine +
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| 46 | "# CPXPARAM_MIP_Strategy_SubAlgorithm 4 # Barrier (MIP)" + Environment.NewLine +
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| 47 | "# CPXPARAM_MIP_Strategy_Search 2 # Apply dynamic search (MIP)" + Environment.NewLine;
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| 48 | }
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| 49 |
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| 50 | [StorableConstructor]
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| 51 | protected CplexSolver(StorableConstructorFlag _) : base(_) { }
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| 52 |
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| 53 | protected CplexSolver(CplexSolver original, Cloner cloner)
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| 54 | : base(original, cloner) {
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| 55 | }
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| 56 |
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| 57 | protected override Solver.OptimizationProblemType OptimizationProblemType =>
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| 58 | ProblemType == ProblemType.LinearProgramming
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| 59 | ? Solver.OptimizationProblemType.CplexLinearProgramming
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| 60 | : Solver.OptimizationProblemType.CplexMixedIntegerProgramming;
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| 61 |
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| 62 | public override IDeepCloneable Clone(Cloner cloner) => new CplexSolver(this, cloner);
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| 63 | }
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| 64 | }
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