public Album GetAlbumById(int albumId)
{
Album album = null;
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("SELECT i.InterpretID, i.Interpret, i.Interpret_Lang ,a.TitelID, a.Titel1, a.Guid as AlbumId, a.ErschDatum, g.genreid, g.genre1");
stringBuilder.Append(" FROM tunesEntities.titel AS a");
stringBuilder.Append(" INNER JOIN tunesEntities.interpreten AS i ON a.InterpretID = i.InterpretID");
stringBuilder.Append(" LEFT JOIN tunesEntities.genre AS g ON a.genreid = g.genreid");
stringBuilder.Append(" WHERE a.titelid = @albumId");
string sql = stringBuilder.ToString();
using (System.Data.EntityClient.EntityConnection entityConnection =
new System.Data.EntityClient.EntityConnection(this.ConnectionString))
{
try
{
entityConnection.Open();
using (EntityCommand entityCommand = entityConnection.CreateCommand())
{
EntityParameter id = new EntityParameter();
id.ParameterName = "albumid";
id.Value = albumId;
entityCommand.Parameters.Add(id);
entityCommand.CommandText = sql;
using (EntityDataReader dataReader = entityCommand.ExecuteReader(System.Data.CommandBehavior.SequentialAccess))
{
if (dataReader.Read())
{
album = new Album
{
Artist = new Artist
{
Id = dataReader.GetInt32("InterpretID", false, 0),
Name = dataReader.GetString("Interpret", false, string.Empty),
SortName = dataReader.GetString("Interpret_Lang", true, string.Empty)
},
Id = dataReader.GetInt32("TitelID", false, 0),
Title = dataReader.GetString("Titel1", false, string.Empty),
AlbumId = dataReader.GetGuid("AlbumId", false, Guid.Empty),
Year = dataReader.GetInt32("ErschDatum", true, 0),
Genre = new Genre
{
Id = dataReader.GetInt32("genreid", true, 0),
Name = dataReader.GetString("genre1", true, string.Empty)
}
};
}
}
GetAlbumTracksByTitelId(album, entityConnection);
}
}
finally
{
entityConnection.Close();
}
}
return album;
}
public Album[] GetNewestAlbums(int limit)
{
Album[] albums = null;
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("SELECT i.InterpretID, i.Interpret, i.Interpret_Lang ,a.TitelID, a.Titel1, a.Guid as AlbumId FROM tunesEntities.titel AS a");
stringBuilder.Append(" INNER JOIN tunesEntities.interpreten AS i ON a.InterpretID = i.InterpretID");
stringBuilder.Append(" ORDER BY a.TitelID DESC");
stringBuilder.Append(" LIMIT @limit ");
string sql = stringBuilder.ToString();
using (System.Data.EntityClient.EntityConnection entityConnection =
new System.Data.EntityClient.EntityConnection(this.ConnectionString))
{
try
{
entityConnection.Open();
using (EntityCommand entityCommand = entityConnection.CreateCommand())
{
EntityParameter limitParam = new EntityParameter();
limitParam.ParameterName = "limit";
limitParam.Value = limit;
entityCommand.Parameters.Add(limitParam);
List<Album> albumCollection = null;
entityCommand.CommandText = sql;
// Execute the command.
using (EntityDataReader dataReader = entityCommand.ExecuteReader(System.Data.CommandBehavior.SequentialAccess))
{
// Start reading results.
while (dataReader.Read())
{
if (albumCollection == null)
{
albumCollection = new List<Album>();
}
Album album = new Album
{
Artist = new Artist
{
Id = dataReader.GetInt32("InterpretID", false, 0),
Name = dataReader.GetString("Interpret", false, string.Empty),
SortName = dataReader.GetString("Interpret_Lang", true, string.Empty)
},
Id = dataReader.GetInt32("TitelID", false, 0),
Title = dataReader.GetString("Titel1", false, string.Empty),
AlbumId = dataReader.GetGuid("AlbumId", false, Guid.Empty)
};
albumCollection.Add(album);
}
}
if (albumCollection != null)
{
albums = albumCollection.ToArray();
}
}
}
finally
{
entityConnection.Close();
}
}
return albums;
}
public Album[] GetAlbums(Query query)
{
Album[] albums = null;
if (query == null)
{
query = new Query
{
PageIndex = 0,
PageSize = 1
};
}
query.PageSize = query.PageSize == 0 ? 1 : query.PageSize;
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("SELECT i.InterpretID, i.Interpret, i.Interpret_Lang ,a.TitelID, a.Titel1, a.Guid as AlbumId FROM tunesEntities.titel AS a");
stringBuilder.Append(" INNER JOIN tunesEntities.interpreten AS i ON a.InterpretID = i.InterpretID");
stringBuilder.Append(" INNER JOIN tunesEntities.lieder AS t ON a.TitelID = t.TitelID");
stringBuilder.Append(" WHERE t.Liedpfad IS NOT NULL");
stringBuilder.Append(" GROUP BY i.InterpretID, i.Interpret, i.Interpret_Lang ,a.TitelID, a.Titel1, a.Guid");
if (query.SortByCondition != null && query.SortByCondition.Id == 1)
{
stringBuilder.Append(" ORDER BY a.Titel1");
}
else
{
stringBuilder.Append(" ORDER BY i.Interpret, a.Titel1");
}
stringBuilder.Append(" SKIP @skip LIMIT @limit ");
string sql = stringBuilder.ToString();
using (System.Data.EntityClient.EntityConnection entityConnection =
new System.Data.EntityClient.EntityConnection(this.ConnectionString))
{
try
{
entityConnection.Open();
using (EntityCommand entityCommand = entityConnection.CreateCommand())
{
EntityParameter skip = new EntityParameter();
skip.ParameterName = "skip";
skip.Value = query.PageIndex;
entityCommand.Parameters.Add(skip);
EntityParameter limit = new EntityParameter();
limit.ParameterName = "limit";
limit.Value = query.PageSize;
entityCommand.Parameters.Add(limit);
List<Album> albumCollection = null;
entityCommand.CommandText = sql;
// Execute the command.
using (EntityDataReader dataReader = entityCommand.ExecuteReader(System.Data.CommandBehavior.SequentialAccess))
{
// Start reading results.
while (dataReader.Read())
{
if (albumCollection == null)
{
albumCollection = new List<Album>();
}
Album album = new Album
{
Artist = new Artist
{
Id = dataReader.GetInt32("InterpretID", false, 0),
Name = dataReader.GetString("Interpret", false, string.Empty),
SortName = dataReader.GetString("Interpret_Lang", true, string.Empty)
},
Id = dataReader.GetInt32("TitelID", false, 0),
Title = dataReader.GetString("Titel1", false, string.Empty),
AlbumId = dataReader.GetGuid("AlbumId", false, Guid.Empty)
};
albumCollection.Add(album);
}
}
if (albumCollection != null)
{
albums = albumCollection.ToArray();
}
}
}
finally
{
entityConnection.Close();
}
}
return albums;
}
private void GetAlbumTracksByTitelId(Album album, System.Data.EntityClient.EntityConnection entityConnection)
{
if (album != null)
{
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("SELECT t.LiedID, t.Track, t.Lied ,t.Dauer");
stringBuilder.Append(" FROM tunesEntities.lieder AS t");
stringBuilder.Append(" WHERE t.titelid = @albumId");
stringBuilder.Append(" AND t.Liedpfad IS NOT NULL");
stringBuilder.Append(" ORDER BY t.Track");
string sql = stringBuilder.ToString();
using (EntityCommand entityCommand = entityConnection.CreateCommand())
{
EntityParameter id = new EntityParameter();
id.ParameterName = "albumid";
id.Value = album.Id;
entityCommand.Parameters.Add(id);
entityCommand.CommandText = sql;
List<Track> tracks = null;
using (EntityDataReader dataReader = entityCommand.ExecuteReader(System.Data.CommandBehavior.SequentialAccess))
{
while (dataReader.Read())
{
if (tracks == null)
{
tracks = new List<Track>();
}
Track track = new Track
{
Id = dataReader.GetInt32("LiedID", false, 0),
TrackNumber = dataReader.GetInt32("Track", false, 0),
Name = dataReader.GetString("Lied", false, string.Empty),
Duration = dataReader.GetTimeSpan("Dauer", true, TimeSpan.MinValue)
};
tracks.Add(track);
}
if (tracks != null)
{
album.Tracks = tracks.ToArray();
}
}
}
}
}
public AlbumViewModel(Album album)
{
this.Album = album;
}
public AlbumViewModel(IDataService dataService, Album album)
{
this.m_dataService = dataService;
this.Album = album;
}