/// <summary>Read the track data</summary>
/// <param name="reader">a reader object to read the data from</param>
/// <param name="items">the <see cref="KDDCupItems"/> object</param>
static public void ReadTracks(TextReader reader, KDDCupItems items)
{
string line;
while ( (line = reader.ReadLine()) != null )
{
string[] tokens = line.Split('|');
int track_id = int.Parse(tokens[0]);
int album_id = tokens[1] == "None" ? -1 : int.Parse(tokens[1]);
int artist_id = tokens[2] == "None" ? -1 : int.Parse(tokens[2]);
var genres = new int[tokens.Length - 3];
for (int i = 0; i < genres.Length; i++)
genres[i] = int.Parse(tokens[3 + i]);
items.Insert(track_id, KDDCupItemType.Track, album_id, artist_id, genres);
}
}
/// <summary>Read the genre data</summary>
/// <param name="reader">a reader object to read the data from</param>
/// <param name="items">the <see cref="KDDCupItems"/> object</param>
static public void ReadGenres(TextReader reader, KDDCupItems items)
{
string line;
while ( (line = reader.ReadLine()) != null )
{
int genre_id = int.Parse(line);
items.Insert(genre_id, KDDCupItemType.Genre, -1, -1, null);
}
}
/// <summary>Read the artist data</summary>
/// <param name="reader">a reader object to read the data from</param>
/// <param name="items">the <see cref="KDDCupItems"/> object</param>
static public void ReadArtists(TextReader reader, KDDCupItems items)
{
string line;
while ( (line = reader.ReadLine()) != null )
{
int artist_id = int.Parse(line);
items.Insert(artist_id, KDDCupItemType.Artist, -1, artist_id, null);
}
}