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source: trunk/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/ResourceRegressionInstanceProvider.cs @ 15853

Last change on this file since 15853 was 15853, checked in by fbaching, 6 years ago

#2908: Make ResourceRegressionDataDescriptor.ResourceName public to be used in external assembly
check for GetType().Assemply instead Assembly.GetExecutingAssembly() to match actual access in line 40 and to make class usable from external assemblies

File size: 2.7 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 System.Globalization;
24using System.IO;
25using System.IO.Compression;
26using System.Linq;
27using System.Reflection;
28using System.Text.RegularExpressions;
29using HeuristicLab.Problems.DataAnalysis;
30
31namespace HeuristicLab.Problems.Instances.DataAnalysis {
32  public abstract class ResourceRegressionInstanceProvider : RegressionInstanceProvider {
33
34    protected abstract string FileName { get; }
35
36    public override IRegressionProblemData LoadData(IDataDescriptor id) {
37      var descriptor = (ResourceRegressionDataDescriptor)id;
38
39      var instanceArchiveName = GetResourceName(FileName + @"\.zip");
40      using (var instancesZipFile = new ZipArchive(GetType().Assembly.GetManifestResourceStream(instanceArchiveName), ZipArchiveMode.Read)) {
41        var entry = instancesZipFile.GetEntry(descriptor.ResourceName);
42        NumberFormatInfo numberFormat;
43        DateTimeFormatInfo dateFormat;
44        char separator;
45        using (Stream stream = entry.Open()) {
46          TableFileParser.DetermineFileFormat(stream, out numberFormat, out dateFormat, out separator);
47        }
48
49        TableFileParser csvFileParser = new TableFileParser();
50        using (Stream stream = entry.Open()) {
51          csvFileParser.Parse(stream, numberFormat, dateFormat, separator, true);
52        }
53
54        Dataset dataset = new Dataset(csvFileParser.VariableNames, csvFileParser.Values);
55        if (!descriptor.CheckVariableNames(csvFileParser.VariableNames)) {
56          throw new ArgumentException("Parsed file contains variables which are not in the descriptor.");
57        }
58
59        return descriptor.GenerateRegressionData(dataset);
60      }
61    }
62
63    protected virtual string GetResourceName(string fileName) {
64      return GetType().Assembly.GetManifestResourceNames()
65              .Where(x => Regex.Match(x, @".*\.Data\." + fileName).Success).SingleOrDefault();
66    }
67  }
68}
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