Package org.drools.core.base.accumulators

Class VarianceAccumulateFunction

java.lang.Object

org.drools.core.base.accumulators.AbstractAccumulateFunction<VarianceAccumulateFunction.VarianceData>

org.drools.core.base.accumulators.VarianceAccumulateFunction

All Implemented Interfaces:

Externalizable, Serializable, org.kie.api.runtime.rule.AccumulateFunction<VarianceAccumulateFunction.VarianceData>

Direct Known Subclasses:

StandardDeviationAccumulateFunction

public class VarianceAccumulateFunction
extends AbstractAccumulateFunction<VarianceAccumulateFunction.VarianceData>

An implementation of an accumulator capable of calculating variance.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	VarianceAccumulateFunction.VarianceData

Constructor Summary

Constructors

Constructor	Description
VarianceAccumulateFunction()

Method Summary

Modifier and Type	Method	Description
void	accumulate(VarianceAccumulateFunction.VarianceData data, Object value)
VarianceAccumulateFunction.VarianceData	createContext()
Double	getResult(VarianceAccumulateFunction.VarianceData data)
Class<?>	getResultType()
void	init(VarianceAccumulateFunction.VarianceData data)
void	readExternal(ObjectInput in)
void	reverse(VarianceAccumulateFunction.VarianceData data, Object value)
boolean	supportsReverse()
void	writeExternal(ObjectOutput out)

Methods inherited from class org.drools.core.base.accumulators.AbstractAccumulateFunction

equals, hashCode

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.kie.api.runtime.rule.AccumulateFunction

accumulateValue, initContext, tryReverse

Constructor Detail

VarianceAccumulateFunction

public VarianceAccumulateFunction()

Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Throws:

IOException

createContext

public VarianceAccumulateFunction.VarianceData createContext()

init

public void init(VarianceAccumulateFunction.VarianceData data)

accumulate

public void accumulate(VarianceAccumulateFunction.VarianceData data,
                       Object value)

reverse

public void reverse(VarianceAccumulateFunction.VarianceData data,
                    Object value)

getResult

public Double getResult(VarianceAccumulateFunction.VarianceData data)

supportsReverse

public boolean supportsReverse()

getResultType

public Class<?> getResultType()