IHistoricalRateProvider Interface
Definition
Identifies an exchange-rate provider that advertises how far back it can serve historical rates, so composing layers can avoid asking it for dates it has declared unavailable.
public interface IHistoricalRateProvider- Extension Methods
Remarks
This is an optional capability interface layered over IDatedRateProvider, following the same
probe-at-runtime idiom as IPairRateLoader: consumers test a provider with is and treat one
that does not implement the interface as Unbounded - never skipped and never
clamped. Implementing the interface therefore only ever removes doomed upstream calls; it cannot hide data a
provider could have served.
The advertised value is a declaration about the upstream source, not a per-request guarantee: a date inside the advertised window can still miss (weekends, holidays, unpublished series), and consumers must retain their normal miss handling. Availability describes the dated history surface only; the undated IRateProvider latest-rate surface is unaffected.
Properties
HistoryAvailability
Gets the history depth this provider advertises: how far back it can serve rates.
RateHistoryAvailability HistoryAvailability { get; }Property Value
- RateHistoryAvailability
The advertised availability. Unbounded declares no known floor.
Applies to
| Product | Versions |
|---|---|
| .NET | 8, 10 |