Package trade.invision.indicators.indicators

Class RecursiveIndicator<T>

java.lang.Object

trade.invision.indicators.indicators.Indicator<T>

trade.invision.indicators.indicators.CachingIndicator<T>

trade.invision.indicators.indicators.RecursiveIndicator<T>

Type Parameters:

T - the Indicator type

Direct Known Subclasses:

AccumulationDistribution, ExponentialMovingAverage, GlobalBearishPercentage, GlobalBullishPercentage, GlobalFallingPercentage, GlobalMaximum, GlobalMinimum, GlobalRisingPercentage, KaufmansAdaptiveMovingAverage, NegativeVolumeIndex, OnBalanceVolume, PositiveVolumeIndex, Supertrend, SupertrendLowerBand, SupertrendUpperBand, WellesWilderMovingAverage, ZeroLagExponentialMovingAverage

public abstract class RecursiveIndicator<T>
extends CachingIndicator<T>

RecursiveIndicator is an abstract CachingIndicator class for Indicator subclasses that use recursion in the Indicator.calculate(long) method implementation. If getValue(long) is called with an empty Indicator cache, a StackOverflowError may occur, so this class replaces recursion with iteration.

Nested Class Summary

Nested classes/interfaces inherited from class trade.invision.indicators.indicators.Indicator

Indicator.CacheSeries

Field Summary

Fields inherited from class trade.invision.indicators.indicators.Indicator

cachedAddCallCount, cachedIndex, cachedValue, cacheSeries, minimumStableIndex, series

Constructor Summary

Constructors

Constructor	Description
RecursiveIndicator(Series<?> series, int minimumStableIndex)

Method Summary

Modifier and Type	Method	Description
T	getValue(long index)	Computes the value of this Indicator at the given index.

Methods inherited from class trade.invision.indicators.indicators.Indicator

caching, calculate, getMinimumStableIndex, getSeries, isCaching, numOf, numOf, numOf, numOf, numOfEight, numOfFive, numOfFour, numOfHalf, numOfHundred, numOfHundredth, numOfNegativeOne, numOfNine, numOfOne, numOfSeven, numOfSix, numOfTen, numOfTenth, numOfThousand, numOfThousandth, numOfThree, numOfTwo, numOfZero, purgeCache

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RecursiveIndicator

public RecursiveIndicator(Series<?> series,
 int minimumStableIndex)

See Also:

• CachingIndicator(Series, int)

Method Details

getValue

public T getValue(long index)

Description copied from class: Indicator

Computes the value of this Indicator at the given index. Regardless of Indicator.isCaching(), if Indicator.getSeries() has not been modified since the previous method call was invoked with the same index as the current method call, then this Indicator does not recalculate the value for index and a cached value is returned. If Indicator.isCaching() is true, then the cached value for index is returned if it has been previously calculated, except if index is equal to Indicator.getSeries() Series.getEndIndex() and Indicator.getSeries() has changed, then the value is recalculated and the cache is updated. If index is greater than Indicator.getSeries() Series.getEndIndex(), then the calculation is attempted, but may throw an IndexOutOfBoundsException. If index is less than Indicator.getSeries() Series.getStartIndex(), then 0 is used to avoid calculating on a value that has already been removed from Indicator.getSeries() and to use this Indicator's default first value so that a StackOverflowError is avoided in recursive calculations.

Overrides:

getValue in class Indicator<T>

Parameters:

index - the index

Returns:

the result (never null)

See Also:

• Indicator.caching()