public bool LoadPlaylist()
{
IServerConnectionManager scm = ServiceRegistration.Get <IServerConnectionManager>();
IContentDirectory cd = scm.ContentDirectory;
if (cd == null)
{
ShowServerNotConnectedDialog();
return(false);
}
PlaylistRawData playlistData = cd.ExportPlaylist(_playlistId);
_mediaItems = cd.LoadCustomPlaylist(playlistData.MediaItemIds, Consts.NECESSARY_AUDIO_MIAS, Consts.EMPTY_GUID_ENUMERATION);
return(true);
}
public void LoadPlaylist()
{
IDialogManager dialogManager = ServiceRegistration.Get <IDialogManager>();
if (_playlist == null)
{
dialogManager.ShowDialog(SkinBase.General.Consts.RES_SYSTEM_ERROR, Consts.RES_PLAYLIST_LOAD_NO_PLAYLIST, DialogType.OkDialog, false, null);
return;
}
IContentDirectory cd = ServiceRegistration.Get <IServerConnectionManager>().ContentDirectory;
AVType? avType = ConvertPlaylistTypeToAVType(_playlist.PlaylistType);
if (cd == null || !avType.HasValue)
{
dialogManager.ShowDialog(SkinBase.General.Consts.RES_SYSTEM_ERROR, Consts.RES_PLAYLIST_LOAD_ERROR_LOADING, DialogType.OkDialog, false, null);
return;
}
Guid[] necessaryMIATypes = new Guid[]
{
ProviderResourceAspect.ASPECT_ID,
MediaAspect.ASPECT_ID,
};
Guid[] optionalMIATypes = new Guid[]
{
AudioAspect.ASPECT_ID,
VideoAspect.ASPECT_ID,
ImageAspect.ASPECT_ID,
};
// Big playlists cannot be loaded in one single step. We have several problems if we try to do so:
// 1) Loading the playlist at once at the server results in one huge SQL IN statement which might break the SQL engine
// 2) The time to load the playlist might lead the UPnP call to break because of the timeout when calling methods
// 3) The resulting UPnP XML document might be too big to fit into memory
// For that reason, we load the playlist in two steps:
// 1) Load media item ids in the playlist
// 2) Load media items in clusters - for each cluster, an own query will be executed at the content directory
PlaylistRawData playlistData = cd.ExportPlaylist(_playlist.PlaylistId);
PlayItemsModel.CheckQueryPlayAction(() => CollectionUtils.Cluster(playlistData.MediaItemIds, 1000).SelectMany(itemIds =>
cd.LoadCustomPlaylist(itemIds, necessaryMIATypes, optionalMIATypes)), avType.Value);
}