#region License Information
/* HeuristicLab
* Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using HeuristicLab.DataImporter.Data;
using HeuristicLab.DataImporter.Data.CommandBase;
using HeuristicLab.DataImporter.Data.Model;
using HEAL.Attic;
namespace HeuristicLab.DataImporter.Command {
[StorableType("296E9F12-31EC-42F2-9745-B164A5FCE302")]
[ViewableCommandInfo("Split Dictionary-style Data", 1, ColumnGroupState.ColumnSelected | ColumnGroupState.Sorted, "Column Commands",
Position = 15)]
public class SplitDictionaryStyleDataCommand : ColumnGroupCommandWithAffectedColumnsBase {
private int addedColumnsCount;
[StorableConstructor]
protected SplitDictionaryStyleDataCommand(StorableConstructorFlag _) : base(_) { }
public SplitDictionaryStyleDataCommand(DataSet dataSet, string columnGroupName, int[] affectedColumns)
: base(dataSet, columnGroupName, affectedColumns) {
}
public override string Description {
get { return "Split dictionary style data"; }
}
public override void Execute() {
base.Execute();
if (ColumnGroup.SortedColumnIndexes.Except(AffectedColumns).Count() != 1 &&
ColumnGroup.SortedColumnIndexes.Except(AffectedColumns).FirstOrDefault() == ColumnGroup.SortedColumnIndexes.ElementAt(0))
throw new CommandExecutionException("Exactly one column must be sorted as first sorted column and not selected to define the equality of the rows.", this);
if (AffectedColumns.Intersect(ColumnGroup.SortedColumnIndexes).Count() != 1)
throw new CommandExecutionException("Exactly one column must be sorted and selected to define the column which holds the grouping value.", this);
if (!AffectedColumns.Except(ColumnGroup.SortedColumnIndexes).Any())
throw new CommandExecutionException("At least one column must not be sorted but selected to define the column which holds the values for new columns.", this);
Dictionary> newColumns = new Dictionary>();
ColumnBase groupColumn = ColumnGroup.GetColumn(ColumnGroup.SortedColumnIndexes.Except(AffectedColumns).First());
if (groupColumn.ContainsNullValues) throw new CommandExecutionException("Column which defines the equality (" + groupColumn.Name + ") must not contain NULL values.", this);
ColumnBase splitColumn = ColumnGroup.GetColumn(ColumnGroup.SortedColumnIndexes.Intersect(AffectedColumns).First());
var valueColumns = AffectedColumns.Except(ColumnGroup.SortedColumnIndexes).Select(index => ColumnGroup.GetColumn(index)).ToList();
IComparable groupValue = groupColumn.GetValue(0); ;
IComparable splitValue;
int groupStartIndex = 0;
for (int row = 0; row < ColumnGroup.RowCount; row++) {
//check if equality value is still the same
if (groupValue.CompareTo(groupColumn.GetValue(row)) != 0) {
groupValue = groupColumn.GetValue(row);
groupStartIndex = row;
}
splitValue = splitColumn.GetValue(row);
//create new column if new group value was detected
if (!newColumns.ContainsKey(splitValue)) {
newColumns.Add(splitValue, new List(valueColumns.Count));
int i = 0;
foreach (var valueColumn in valueColumns) {
var newColumn = valueColumn.CreateCopyOfColumnWithoutValues(valueColumn.TotalValuesCount);
newColumn.Name += "_" + splitValue;
newColumn.Resize(ColumnGroup.RowCount);
newColumns[splitValue].Add(newColumn);
i++;
}
}
for (int i = groupStartIndex; i < ColumnGroup.RowCount && groupValue.CompareTo(groupColumn.GetValue(i)) == 0; i++) {
for (int col = 0; col < valueColumns.Count; col++)
newColumns[splitValue][col].ChangeValue(i, valueColumns[col].GetValue(row));
}
}
ColumnGroup.AddColumns(newColumns.Values.SelectMany(col => col));
addedColumnsCount = newColumns.Values.Sum(columns => columns.Count);
this.ColumnGroup.FireChanged();
this.ColumnGroup = null;
}
public override void UndoExecute() {
base.UndoExecute();
for (int i = 0; i < addedColumnsCount; i++)
ColumnGroup.RemoveColumn(ColumnGroup.Columns.Count() - 1);
this.ColumnGroup.FireChanged();
this.ColumnGroup = null;
}
}
}