/// <summary>
/// Exports a streamable as an observable of events. Produces events that are sync time ordered.
/// Expects only start-edge events in the stream, and constructs user-defined payloads as a result.
/// </summary>
/// <typeparam name="TPayload"></typeparam>
/// <typeparam name="TResult"></typeparam>
/// <param name="stream"></param>
/// <param name="constructor">Method description that constructs result data from the start time and the payload of each event.</param>
/// <returns></returns>
public static IObservable <TResult> ToTemporalObservable <TPayload, TResult>(
this IStreamable <Empty, TPayload> stream,
Expression <Func <long, TPayload, TResult> > constructor)
{
Invariant.IsNotNull(stream, nameof(stream));
return(stream.ToTemporalObservable(
constructor, null, Guid.NewGuid().ToString()));
}
/// <summary>
/// Exports a streamable as an observable of events. Produces events that are sync time ordered.
/// Expects only start-edge and interval events in the stream, and constructs user-defined payloads as a result.
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TPayload"></typeparam>
/// <typeparam name="TResult"></typeparam>
/// <param name="container">The query container to which an egress point is being added.</param>
/// <param name="identifier">A string that can uniquely identify the point of egress in the query.</param>
/// <param name="stream"></param>
/// <param name="constructor">Method description that constructs result data from the start time, end time, and the payload of each event.</param>
/// <returns></returns>
public static IObservable <TResult> RegisterTemporalOutput <TKey, TPayload, TResult>(
this QueryContainer container,
IStreamable <PartitionKey <TKey>, TPayload> stream,
Expression <Func <TKey, long, long, TPayload, TResult> > constructor,
string identifier = null)
{
Invariant.IsNotNull(stream, nameof(stream));
return(stream.ToTemporalObservable(
constructor, container, identifier ?? Guid.NewGuid().ToString()));
}