source: branches/DataPreprocessing/HeuristicLab.DataPreprocessing/3.3/Implementations/FilterLogic.cs @ 10843

Last change on this file since 10843 was 10843, checked in by rstoll, 6 years ago
  • Fixed or combination filter, default value was set to true and thus all rows where filtered (regardless of the actual filter)
File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 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.Collections.Generic;
23using System.Linq;
24using HeuristicLab.DataPreprocessing.Filter;
25using HeuristicLab.DataPreprocessing.Interfaces;
26namespace HeuristicLab.DataPreprocessing {
27  public class FilterLogic : IFilterLogic {
28
29    private IFilteredPreprocessingData preprocessingData;
30
31    public FilterLogic(IFilteredPreprocessingData preprocessingData) {
32      this.preprocessingData = preprocessingData;
33    }
34
35
36
37    public bool[] Preview(IList<IFilter> filters, bool isAndCombination) {
38      IList<IFilter> activeFilters = filters.Where(f => f.Active && f.ConstraintData != null).ToList<IFilter>();
39
40      if (activeFilters.Count == 0) {
41        return new bool[preprocessingData.Rows];
42      }
43
44      bool[] result = CreateBoolArray(preprocessingData.Rows, isAndCombination);
45
46      foreach (IFilter filter in activeFilters) {
47        bool[] filterResult = filter.Check();
48        for (int row = 0; row < result.Length; ++row) {
49          result[row] = Result(result[row], filterResult[row], isAndCombination);
50        }
51      }
52
53      preprocessingData.SetFilter(result);
54
55      return result;
56    }
57
58    public bool[] CreateBoolArray(int rows, bool value) {
59      return Enumerable.Repeat<bool>(value, rows).ToArray();
60    }
61
62    public bool Result(bool current, bool addition, bool isAndCombination) {
63      return isAndCombination ? current && addition : current || addition;
64    }
65
66    public void Apply(IList<IFilter> filters, bool isAndCombination) {
67      preprocessingData.SetFilter(Preview(filters, isAndCombination));
68      preprocessingData.PersistFilter();
69    }
70
71    public void Reset() {
72      preprocessingData.ResetFilter();
73    }
74
75    public IPreprocessingData PreprocessingData {
76      get { return preprocessingData; }
77    }
78  }
79}
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