source: branches/2931_OR-Tools_LP_MIP/HeuristicLab.ExactOptimization/3.3/LinearProgramming/Algorithms/Solvers/GlopSolver.cs @ 16805

Last change on this file since 16805 was 16805, checked in by ddorfmei, 4 months ago

#2931: Glop was listed as MIP solver but is only an LP solver

File size: 2.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using Google.OrTools.LinearSolver;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HEAL.Attic;
28
29namespace HeuristicLab.ExactOptimization.LinearProgramming {
30
31  [Item("Glop", "Glop (https://developers.google.com/optimization/lp/glop) can be used out of the box.")]
32  [StorableType("A05DA123-2779-4175-991E-C4790C5C2E00")]
33  public class GlopSolver : IncrementalLinearSolver {
34
35    public GlopSolver() {
36      problemTypeParam.Value = (EnumValue<ProblemType>)new EnumValue<ProblemType>(ProblemType.LinearProgramming).AsReadOnly();
37      SolverSpecificParameters =
38        "# for file format, see Protocol Buffers text format (https://developers.google.com/protocol-buffers/docs/overview#whynotxml)" + Environment.NewLine +
39        "# for parameters, see https://github.com/google/or-tools/blob/v6.10/ortools/glop/parameters.proto" + Environment.NewLine +
40        "# examples:" + Environment.NewLine +
41        "# random_seed: 10" + Environment.NewLine +
42        "# use_dual_simplex: true # Dual Simplex (LP)" + Environment.NewLine;
43    }
44
45    [StorableConstructor]
46    protected GlopSolver(StorableConstructorFlag _) : base(_) { }
47
48    protected GlopSolver(GlopSolver original, Cloner cloner)
49      : base(original, cloner) {
50    }
51
52    protected override Solver.OptimizationProblemType OptimizationProblemType =>
53      Solver.OptimizationProblemType.GlopLinearProgramming;
54
55    public override IDeepCloneable Clone(Cloner cloner) => new GlopSolver(this, cloner);
56  }
57}
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