protected static TType GetOpenCollection <TType> (string fileName)
where TType : PersistentCollection <T, TCollection>
{
if (OpenCollections.TryOpen(fileName, out var collection))
{
if (collection is TType result)
{
return(result);
}
throw new InvalidCastException(
$"{fileName} already has an open collection of type {collection.GetType ( )}");
}
return(null);
}
protected PersistentCollection(string fileName,
JsonSerializerSettings serializerSettings,
TimeSpan flushInterval)
{
FileName = fileName;
SerializerSettings = serializerSettings;
FlushInterval = flushInterval;
OpenCollections.Add(this);
if (!Load( ))
{
Collection = new TCollection( );
Save( );
}
disposable = Observable.Interval(FlushInterval).Subscribe(l => ForceSave( ));
}
public void Dispose( )
{
ForceSave( );
OpenCollections.Remove(FileName);
disposable?.Dispose( );
}