/// <summary>
/// Creates new snapshot subscription for a single event type that is attached to this feed.
/// This method creates new <see cref="IDXFeedSubscription{E}"/>.
/// </summary>
/// <typeparam name="E">The type of events.</typeparam>
/// <param name="time">Unix time in the past - number of milliseconds from 1.1.1970.</param>
/// <param name="source">The source of the event.</param>
/// <returns>New DXFeedSubscription for a single event type.</returns>
internal IDXFeedSubscription <E> CreateSnapshotSubscription <E>(long time, IndexedEventSource source)
where E : IDxIndexedEvent
{
IDXFeedSubscription <E> subscription = new DXFeedSubscription <E>(endpoint, time, source) as IDXFeedSubscription <E>;
subscription.Attach(this);
return(subscription);
}
/// <summary>
/// Creates new subscription for multiple event types that is attached to this feed.
/// For a single event type use <see cref="CreateSubscription{E}"/>.
/// This method creates new <see cref="IDXFeedSubscription{E}"/> and invokes
/// <see cref="AttachSubscription{E}(IDXFeedSubscription{E})"/>.
/// </summary>
/// <typeparam name="E">The type of events.</typeparam>
/// <param name="eventTypes">The classes of event types.</param>
/// <returns>The new <see cref="IDXFeedSubscription{E}"/>.</returns>
/// <exception cref="InvalidOperationException">Endpoint was been closed.</exception>
public IDXFeedSubscription <E> CreateSubscription <E>(params Type[] eventTypes)
where E : IDxEventType
{
if (endpoint.State == DXEndpointState.Closed)
{
throw new InvalidOperationException("Endpoint was been closed.");
}
IDXFeedSubscription <E> subscription = new DXFeedSubscription <E>(endpoint, eventTypes) as IDXFeedSubscription <E>;
subscription.Attach(this);
return(subscription);
}