/// <summary>
/// This is the work for saving a PlaylistItem without the Transaction wrapper.
/// </summary>
private void DoSave(Playlist playlist)
{
foreach (PlaylistItem playlistItem in playlist.Items)
{
// This is a bit of a hack, but NHibernate pays attention to the "dirtyness" of immutable entities.
// As such, if two PlaylistItems reference the same Video object -- NonUniqueObjectException is thrown even though no changes
// can be persisted to the database.
playlistItem.Video = VideoDao.Merge(playlistItem.Video);
playlistItem.ValidateAndThrow();
playlistItem.Video.ValidateAndThrow();
}
playlist.ValidateAndThrow();
PlaylistDao.Save(playlist);
}