[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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[16405] | 22 | using System.Drawing;
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| 23 | using System.IO;
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[16288] | 24 | using Google.OrTools.LinearSolver;
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[16405] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Common.Resources;
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| 27 | using HeuristicLab.Core;
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| 28 | using HeuristicLab.Data;
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| 29 | using HeuristicLab.Optimization;
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| 30 | using HeuristicLab.Parameters;
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| 31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[16172] | 32 |
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[16405] | 33 | namespace HeuristicLab.MathematicalOptimization.LinearProgramming {
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[16233] | 34 |
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[16405] | 35 | [Item("File-Based Linear/Mixed Integer Programming Problem Definition", "File that defines the model for linear/mixed integer programming problem.")]
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| 36 | [StorableClass]
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| 37 | public sealed class FileBasedLinearProgrammingProblemDefinition : ParameterizedNamedItem, ILinearProgrammingProblemDefinition {
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[16172] | 38 |
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[16405] | 39 | [Storable]
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| 40 | private readonly IFixedValueParameter<FileValue> fileNameParam;
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| 41 |
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| 42 | [Storable]
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| 43 | private byte[] fileContent;
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| 44 |
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| 45 | public FileBasedLinearProgrammingProblemDefinition() {
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| 46 | Parameters.Add(fileNameParam = new FixedValueParameter<FileValue>(nameof(FileName), new FileValue()));
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| 47 | fileNameParam.Value.FileDialogFilter =
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| 48 | "All Supported Files (*.mps;*.bin;*.prototxt)|*.mps;*.bin;*.prototxt|" +
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| 49 | "Mathematical Programming System Files (*.mps)|*.mps|" +
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| 50 | "Google OR-Tools Protocol Buffers Files (*.bin;*.prototxt)|*.bin;*.prototxt|" +
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| 51 | "All Files (*.*)|*.*";
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| 52 | fileNameParam.Value.PathChanged += (o, e) => {
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| 53 | if (File.Exists(FileName)) {
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| 54 | fileContent = File.ReadAllBytes(FileName);
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| 55 | }
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| 56 | };
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| 57 | }
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| 58 |
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| 59 | private FileBasedLinearProgrammingProblemDefinition(FileBasedLinearProgrammingProblemDefinition original, Cloner cloner)
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| 60 | : base(original, cloner) {
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| 61 | fileNameParam = cloner.Clone(original.fileNameParam);
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| 62 | }
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| 63 |
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| 64 | [StorableConstructor]
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| 65 | private FileBasedLinearProgrammingProblemDefinition(bool deserializing) : base(deserializing) { }
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| 66 |
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| 67 | public new static Image StaticItemImage => VSImageLibrary.File;
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| 68 |
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| 69 | public string FileName {
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| 70 | get => fileNameParam.Value.Value;
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| 71 | set => fileNameParam.Value.Value = value;
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| 72 | }
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| 73 |
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| 74 | public IFixedValueParameter<FileValue> FileNameParam => fileNameParam;
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| 75 |
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| 76 | public void Analyze(Solver solver, ResultCollection results) {
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| 77 | }
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| 78 |
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[16233] | 79 | public void BuildModel(Solver solver) {
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[16405] | 80 | var fileInfo = new FileInfo(FileName);
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| 81 | var tempFileName = Path.GetTempFileName();
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| 82 | File.WriteAllBytes(tempFileName, fileContent);
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| 83 |
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| 84 | var status = (SolverResponseStatus)(fileInfo.Extension == ".mps"
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| 85 | ? solver.ImportModelFromMpsFormat(tempFileName)
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| 86 | : solver.ImportModelFromProtoFormat(tempFileName));
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| 87 |
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| 88 | if (status == SolverResponseStatus.Abnormal)
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| 89 | throw new FileFormatException($"'{FileName}' is not a valid MPS or Google OR-Tools Protocol Buffers file.");
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| 90 |
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| 91 | File.Delete(tempFileName);
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[16172] | 92 | }
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| 93 |
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[16405] | 94 | public override IDeepCloneable Clone(Cloner cloner) => new FileBasedLinearProgrammingProblemDefinition(this, cloner);
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[16172] | 95 | }
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[16288] | 96 | }
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