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source: branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Command/ChangeColumnGroup/SplitCategorialColumnCommand.cs @ 12912

Last change on this file since 12912 was 9615, checked in by mkommend, 11 years ago

#1734: Updated copyright information in all DataImporter classes.

File size: 3.3 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;
23using System.Collections.Generic;
24using System.Linq;
25using HeuristicLab.DataImporter.Data;
26using HeuristicLab.DataImporter.Data.CommandBase;
27using HeuristicLab.DataImporter.Data.Model;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.DataImporter.Command {
31  [StorableClass]
32  [ViewableCommandInfo("Split categorial column", 1, ColumnGroupState.ColumnSelected, "Column Commands",
33    Position = 16, SelectedColumns = 1)]
34  public class SplitCategorialColumnCommand : ColumnCommandBase {
35    private int addedColumnsCount;
36    private const double SETVALUE = 1.0;
37    private const double NOTSETVALUE = 0.0;
38
39    [StorableConstructor]
40    protected SplitCategorialColumnCommand(bool deserializing) : base(deserializing) { }
41
42    public SplitCategorialColumnCommand(DataSet dataSet, string columnGroupName, int columnIndex)
43      : base(dataSet, columnGroupName, columnIndex) {
44    }
45
46    public override string Description {
47      get { return "Split categorial column"; }
48    }
49
50    public override void Execute() {
51      base.Execute();
52      if (Column.NullValuesCount != 0)
53        throw new CommandExecutionException("Categorial column must not contain null values.", this);
54
55      int columnIndex = this.ColumnGroup.IndexOfColumn(Column);
56      Dictionary<string, DoubleColumn> addedColumns = new Dictionary<string, DoubleColumn>();
57      foreach (string value in Column.ValuesEnumerable.Cast<IComparable>().Distinct().OrderBy(c => c).Select(o => o.ToString())) {
58        DoubleColumn doubleColumn = new DoubleColumn(Column.Name + " " + value.ToString());
59        addedColumns[value] = doubleColumn;
60        ColumnGroup.InsertColumn(columnIndex + addedColumnsCount + 1, doubleColumn);
61        addedColumnsCount++;
62      }
63
64      for (int row = 0; row < ColumnGroup.RowCount; row++) {
65        string value = Column.GetValue(row).ToString();
66        foreach (KeyValuePair<string, DoubleColumn> pair in addedColumns) {
67          if (pair.Key == value)
68            pair.Value.AddValue(SETVALUE);
69          else
70            pair.Value.AddValue(NOTSETVALUE);
71        }
72      }
73      ColumnGroup.FireChanged();
74    }
75
76    public override void UndoExecute() {
77      base.UndoExecute();
78      int columnIndex = this.ColumnGroup.IndexOfColumn(Column);
79      for (int i = 0; i < addedColumnsCount; i++)
80        this.ColumnGroup.RemoveColumn(columnIndex + 1);
81      addedColumnsCount = 0;
82      ColumnGroup.FireChanged();
83    }
84  }
85}
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