public IEnumerable <AlbumDTO> ListAlbums(AlbumFilter filter)
{
using (UnitOfWorkProvider.Create())
{
_albumListQuery.Filter = filter;
return(_albumListQuery.Execute() ?? new List <AlbumDTO>());
}
}
public int GetAlbumIdByName(string albumName)
{
if (albumName == null)
{
throw new ArgumentNullException("Album service - GetAlbumIdByName(...) albumName cannot be null");
}
using (UnitOfWorkProvider.Create())
{
albumListQuery.Filter = new AlbumFilter {
Name = albumName
};
var album = albumListQuery.Execute().SingleOrDefault();
if (album == null)
{
throw new NullReferenceException("Album service - GetAlbumIdByName(...) album cannot be null(could not be found)");
}
return(album?.ID ?? 0);
}
}
public IEnumerable <AlbumDTO> GetAllAlbumsForArtist(int artistId)
{
if (artistId < 1)
{
throw new ArgumentOutOfRangeException("Artist service - GetAllAlbumsForArtist(...) artistId cannot be lesser than 1");
}
List <int> artistIds = new List <int> {
artistId
};
using (UnitOfWorkProvider.Create())
{
albumListQuery.Filter = new AlbumFilter {
ArtistIDs = artistIds
};
return(albumListQuery.Execute());
}
}