Class PeriodCounterRTIndicator

java.lang.Object

com.wualabs.qtsurfer.engine.indicators.core.AbstractRTIndicator

com.wualabs.qtsurfer.engine.indicators.core.AbstractIncrementalRTIndicator

com.wualabs.qtsurfer.engine.indicators.core.AbstractDecorableIncrementalRTIndicator

com.wualabs.qtsurfer.engine.indicators.helpers.PeriodCounterRTIndicator

All Implemented Interfaces:

ClockAware, PeriodCounter, Resettable, RTIndicator

Direct Known Subclasses:

GainRTIndicator, LossRTIndicator

public class PeriodCounterRTIndicator
extends AbstractDecorableIncrementalRTIndicator
implements PeriodCounter

Incremental indicator that counts the number of consecutive periods (updates). Subclasses like GainRTIndicator and LossRTIndicator use this to track how many consecutive periods a condition has held. The counter increments on each nextValue call and can be reset via resetPeriods().

Constructor Summary

Constructors

Constructor	Description
PeriodCounterRTIndicator(RTIndicator indicator)

Method Summary

Modifier and Type	Method	Description
long	getPeriodCount()
protected void	incPeriods()
protected double	nextValue(double prevValue, double newValue)	Computes the next indicator value from the previous and new input values.
void	resetPeriods()

Methods inherited from class AbstractDecorableIncrementalRTIndicator

getIndicator, reset, setClockSupplier, update

Methods inherited from class AbstractIncrementalRTIndicator

getLastUpdateValue, getPeriodCycles, getPeriods, getPrevValue, initValue, isPeriodic, isReady, prevNextValue, setPeriods, tickValue

Methods inherited from class AbstractRTIndicator

equals, getDisplayHint, getMeta, getValue, hashCode, hide, isPoison, setValue, toString, toString, withDisplayHint, withMeta

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface RTIndicator

getId, isHidden, ro, update, update

Constructor Details

PeriodCounterRTIndicator

public PeriodCounterRTIndicator(RTIndicator indicator)

Method Details

resetPeriods

public void resetPeriods()

Specified by:

resetPeriods in interface PeriodCounter

incPeriods

protected void incPeriods()

nextValue

protected double nextValue(double prevValue,
 double newValue)

Description copied from class: AbstractIncrementalRTIndicator

Computes the next indicator value from the previous and new input values. This is the core calculation method that subclasses must implement.

Overrides:

nextValue in class AbstractDecorableIncrementalRTIndicator

Parameters:

prevValue - the previous indicator value (or last update value, depending on override)

newValue - the new input value

Returns:

the computed indicator value

getPeriodCount

public long getPeriodCount()

Specified by:

getPeriodCount in interface PeriodCounter