[16288] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2018 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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[16373] | 22 | using System;
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| 23 | using System.Threading;
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[16288] | 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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[16172] | 26 | using HeuristicLab.Data;
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[16405] | 27 | using HeuristicLab.Optimization;
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[16172] | 28 | using HeuristicLab.Parameters;
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| 29 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 30 |
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[16405] | 31 | namespace HeuristicLab.MathematicalOptimization.LinearProgramming {
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[16233] | 32 |
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[16172] | 33 | [Item("SCIP", "SCIP (http://scip.zib.de/) must be installed and licenced.")]
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| 34 | [StorableClass]
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[16405] | 35 | public class ScipSolver : ExternalIncrementalLinearSolver {
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[16373] | 36 | private TimeSpan timeLimit = TimeSpan.Zero;
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| 37 |
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[16172] | 38 | public ScipSolver() {
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[16233] | 39 | Parameters.Add(libraryNameParam = new FixedValueParameter<FileValue>(nameof(LibraryName),
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[16234] | 40 | new FileValue { FileDialogFilter = FileDialogFilter, Value = Properties.Settings.Default.ScipLibraryName }));
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[16373] | 41 | problemTypeParam.Value =
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| 42 | (EnumValue<ProblemType>)new EnumValue<ProblemType>(ProblemType.MixedIntegerProgramming).AsReadOnly();
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[16405] | 43 | SolverSpecificParameters =
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[16373] | 44 | "# for file format and parameters, see https://scip.zib.de/doc/html/PARAMETERS.php" + Environment.NewLine +
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| 45 | "# example:" + Environment.NewLine +
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| 46 | "# branching/random/seed = 10" + Environment.NewLine;
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[16172] | 47 | }
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| 48 |
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[16288] | 49 | [StorableConstructor]
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| 50 | protected ScipSolver(bool deserializing)
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| 51 | : base(deserializing) {
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| 52 | }
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| 53 |
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| 54 | protected ScipSolver(ScipSolver original, Cloner cloner)
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| 55 | : base(original, cloner) {
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| 56 | }
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| 57 |
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[16405] | 58 | protected override TimeSpan IntermediateTimeLimit => timeLimit += QualityUpdateInterval;
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| 59 |
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[16373] | 60 | protected override OptimizationProblemType OptimizationProblemType =>
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[16405] | 61 | OptimizationProblemType.ScipMixedIntegerProgramming;
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[16233] | 62 |
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[16405] | 63 | public override void Solve(ILinearProgrammingProblemDefinition problemDefintion, ref TimeSpan executionTime, ResultCollection results, CancellationToken cancellationToken) {
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[16373] | 64 | timeLimit = TimeSpan.Zero;
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[16405] | 65 | base.Solve(problemDefintion, ref executionTime, results, cancellationToken);
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[16373] | 66 | }
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[16172] | 67 | }
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[16288] | 68 | }
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