// Comparator class for countries
int IComparer.Compare(object x, object y)
{
DictionaryEntry e1 = (DictionaryEntry)x;
DictionaryEntry e2 = (DictionaryEntry)y;
StyleTreeMapInfo st1 = (StyleTreeMapInfo)e1.Value;
StyleTreeMapInfo st2 = (StyleTreeMapInfo)e2.Value;
// descendent order
return(st2.iReleaseCount.CompareTo(st1.iReleaseCount));
}
/// <summary>
/// Creates the TreeMap for the countries grouped per Style
/// </summary>
/// <param name="aRectangle"></param>
/// <param name="db"></param>
public object[, ,] BuildCountriesAreasTree(out int aQuantitativeDataIndex,
out int aOrdinalDataIndex, out int aIdIndex, out int aLeafNodeLabelIndex,
List <GMSToolTipComponent> toolTipComponents, out object[,,] aColorMapInput)
{
List <List <object> > dataRows = new List <List <object> >();
// Sort the countries so we can have only the N most popular ones
ArrayList sortedCountries = new ArrayList(iDb.countries.Values);
sortedCountries.Sort(new CountryComparer(CountryComparer.CRITERION.RELEASES));
Hashtable styles = new Hashtable();
int idCounter = 0;
foreach (Country country in sortedCountries)
{
foreach (StyleTreeMapInfo styleInfo in styles.Values)
{
styleInfo.iReleaseCount = 0;
}
// iterate the releases and increment the counter for each style
foreach (MusicBrainzRelease release in country.releases)
{
string styleName = release.freeDBAlbum.style.name;
if (styles.ContainsKey(styleName))
{
StyleTreeMapInfo info = (StyleTreeMapInfo)styles[styleName];
info.iReleaseCount++;
}
else
{
StyleTreeMapInfo info = new StyleTreeMapInfo();
info.iReleaseCount = 1;
info.id = idCounter++;
styles.Add(styleName, info);
}
}
// Sort the styles in a decreasing way
ArrayList sortedStyles = new ArrayList(styles);
sortedStyles.Sort(new StyleTreeMapInfoComparer());
int styleLimiter = 30;
foreach (DictionaryEntry entry in sortedStyles)
{
StyleTreeMapInfo styleInfo = (StyleTreeMapInfo)entry.Value;
int releasesCount = styleInfo.iReleaseCount;
if (releasesCount == 0)
{
continue;
}
if (styleLimiter == 0)
{
break;
}
string styleName = (string)entry.Key;
string countryName = country.name;
List <object> countryRow = new List <object>();
countryRow.Add(styleName); // Col 0: Leaf Labels
countryRow.Add(countryName); // Col 1: Group Labels
countryRow.Add(releasesCount); // Col 2: Area values
countryRow.Add(styleInfo.id); // Col 3: Id
dataRows.Add(countryRow);
styleLimiter--;
}
}
// Removing the id's gaps by creating increasing ids
Hashtable idHash = new Hashtable();
int idCount = 0;
foreach (List <object> row in dataRows)
{
int id = (int)row[3];
if (!idHash.ContainsKey(id))
{
idHash.Add(id, idCount++);
}
}
// the column order
aQuantitativeDataIndex = 2; // Area values
aOrdinalDataIndex = 1; // Group Labels
aIdIndex = 3; // Id
aLeafNodeLabelIndex = 0; // Leaf Label
// ToolTip Components
toolTipComponents.Add(new GMSToolTipComponent("Country", aOrdinalDataIndex));
toolTipComponents.Add(new GMSToolTipComponent("Music Style", aLeafNodeLabelIndex));
toolTipComponents.Add(new GMSToolTipComponent("Nr. Albums", aQuantitativeDataIndex));
// Create and Fill the DataCube
object[, ,] dataCube = new object[4, dataRows.Count, 1];
aColorMapInput = new object[1, idHash.Count, 1];
// Fill the color map input
int j = 0;
foreach (int id in idHash.Values)
{
aColorMapInput[0, j++, 0] = id;
}
int i = 0;
foreach (List <object> row in dataRows)
{
j = 0;
foreach (object attribute in row)
{
if (j == 3)
{
dataCube[j++, i, 0] = idHash[attribute];
}
else
{
dataCube[j++, i, 0] = attribute;
}
}
++i;
}
return(dataCube);
}
