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source: branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Backend.Csv/CsvImportCommand.cs @ 9793

Last change on this file since 9793 was 9615, checked in by mkommend, 11 years ago

#1734: Updated copyright information in all DataImporter classes.

File size: 3.0 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.IO;
23using HeuristicLab.DataImporter.Data.CommandBase;
24using HeuristicLab.DataImporter.Data.Model;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26
27namespace HeuristicLab.DataImporter.Backend.Csv {
28  [StorableClass]
29  public class CsvImportCommand : DataSetCommandBase {
30    private ColumnGroup newColumnGroup;
31
32    [StorableConstructor]
33    protected CsvImportCommand(bool deserializing) : base(deserializing) { }
34
35    public CsvImportCommand(DataSet dataSet)
36      : base(dataSet) {
37    }
38
39    [Storable]
40    private string fileName;
41    public string FileName {
42      get { return fileName; }
43      set { this.fileName = value; }
44    }
45
46    [Storable]
47    private char[] delimiter;
48    public char[] Delimiter {
49      get { return this.delimiter; }
50      set { this.delimiter = value; }
51    }
52
53    [Storable]
54    private bool columnNamesInFirstRow;
55    public bool ColumnNamesInFirstRow {
56      get { return this.columnNamesInFirstRow; }
57      set { this.columnNamesInFirstRow = value; }
58    }
59
60    public override string Description {
61      get { return "Import CSV file"; }
62    }
63
64    public override void Execute() {
65      base.Execute();
66      newColumnGroup = new ColumnGroup(fileName.Substring(fileName.LastIndexOf('\\') + 1));
67      StreamReader reader = new StreamReader(fileName);
68      string firstLine = reader.ReadLine();
69
70      int i = 1;
71      string[] values = firstLine.Split(delimiter);
72      foreach (string value in values) {
73        if (columnNamesInFirstRow)
74          newColumnGroup.AddColumn(new StringColumn(value));
75        else {
76          newColumnGroup.AddColumn(new StringColumn("Column " + i));
77        }
78        i++;
79      }
80      if (!columnNamesInFirstRow)
81        newColumnGroup.AddRow(values);
82      while (!reader.EndOfStream) {
83        newColumnGroup.AddRow(reader.ReadLine().Split(delimiter));
84      }
85      reader.Close();
86      DataSet.AddColumnGroup(newColumnGroup);
87      DataSet.FireChanged();
88    }
89
90    public override void UndoExecute() {
91      base.UndoExecute();
92      DataSet.RemoveColumnGroup(newColumnGroup);
93      newColumnGroup = null;
94      DataSet.FireChanged();
95    }
96  }
97}
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