Package com.wualabs.qtsurfer.engine.indicators.core

package com.wualabs.qtsurfer.engine.indicators.core

Core interfaces and abstract base classes for the RTIndicator framework.

Primary interface

RTIndicator defines the contract for all real-time indicators: getValue(), update(double), and reset().

Abstract base classes

• AbstractRTIndicator – Base implementation storing a single value
• AbstractIncrementalRTIndicator – For window-based indicators that maintain running state via tickValue() callbacks
• AbstractEmaRTIndicator – Base class for exponential moving average variants
• AbstractDecorableRTIndicator – Supports wrapping another indicator as input (decorator pattern)
• AbstractDecorableIncrementalRTIndicator – Combines decoration with incremental/windowed computation

Supporting interfaces

• Resettable – Functional interface for reset capability
• ClockAware – Marker for time-aware indicators
• PeriodCounter – Tracks tick/period counts
• RTIndicatorSource – Source of indicator values
• TickerValueSource – Extracts values from XChange Ticker objects
• FundingRateValueSource – Extracts funding rate values

See Also:

• StateStore

Class	Description
AbstractDecorableIncrementalRTIndicator	Incremental indicator that optionally decorates (wraps) another indicator.
AbstractDecorableRTIndicator
AbstractEmaRTIndicator	Base class for EMA RT Indicators
AbstractIncrementalRTIndicator	Base class for indicators that compute values incrementally from a stream of updates.
AbstractRTIndicator	Base RT indicator class
AbstractWindowSeriesRTIndicator	Base class for RT indicators that use a single WindowSeriesStore.
CacheableRTIndicator	Opt-in contract for an indicator that can state its own math identity, so a series it produced over one dataset can be replayed instead of recomputed.
DisplayHint	How an indicator's value should be presented — the typed view of the IndicatorMeta.DISPLAY metadata entry.
FundingRateValueSource	FundingRate enumeration of value sources, aligned with XChange's FundingRateInterval.
IndicatorMeta	Descriptive metadata an indicator carries about itself, kept separate from its registered name .
IndicatorNotice	A Notice an indicator group raises about its own wiring: it names the indicator concerned and the instrument whose group raised it, which is what makes a notice actionable when a strategy runs the same indicator set across many instruments.
IndicatorNotice.Key	What makes a notice unique: the condition, and the indicator it concerns.
KlineValueSource	Value sources available on a kline (bar): the OHLCV fields shared with every market snapshot plus the kline-only trade count.
MarketSnapshotValueSource	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).
RichRTIndicator<T extends MarketSnapshot>	Real-time indicator that consumes a full MarketSnapshot rather than a single scalar value.
RTIndicator	Interface for a Real Time Indicator.
RTIndicatorSource<T>
TickerValueSource	Ticker enumeration of value sources