Interface MarketSnapshotValueSource

All Known Implementing Classes:

KlineValueSource, TickerValueSource

public sealed interface MarketSnapshotValueSource
permits TickerValueSource, KlineValueSource

Common supertype for the scalar field selectors of the sealed market snapshot hierarchy: TickerValueSource (ticker fields incl. bid/ask/vwap) and KlineValueSource (kline OHLCV + trade stats). Lets the scalar wrapper and the indicator-group builder accept either kind.

Intentionally a marker with no extract(MarketSnapshot) method: extraction is done by switch over the concrete enum (a tableswitch on the ordinal) rather than a polymorphic per-constant method or stored lambda. On the hot path the scalar wrapper sees many different sources at one call site; a virtual extract there would be megamorphic and the JIT could not inline it, whereas a switch stays monomorphic and inlinable. See TickerSnapshots / KlineSnapshots for the extractors.