org.apache.bookkeeper.client

Class WeightedRandomSelectionImpl<T>

java.lang.Object

org.apache.bookkeeper.client.WeightedRandomSelectionImpl<T>

All Implemented Interfaces:

WeightedRandomSelection<T>

class WeightedRandomSelectionImpl<T>
extends java.lang.Object
implements WeightedRandomSelection<T>

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.bookkeeper.client.WeightedRandomSelection

WeightedRandomSelection.WeightedObject

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.util.TreeMap<java.lang.Double,T>	cummulativeMap
(package private) static org.slf4j.Logger	LOG
(package private) java.util.Map<T,WeightedRandomSelection.WeightedObject>	map
(package private) int	maxProbabilityMultiplier
(package private) java.lang.Double	randomMax
(package private) java.util.concurrent.locks.ReadWriteLock	rwLock

Constructor Summary

Constructors

Constructor and Description
WeightedRandomSelectionImpl()
WeightedRandomSelectionImpl(int maxMultiplier)

Method Summary

Modifier and Type	Method and Description
T	getNextRandom()
T	getNextRandom(java.util.Collection<T> selectedNodes)
void	setMaxProbabilityMultiplier(int max)
void	updateMap(java.util.Map<T,WeightedRandomSelection.WeightedObject> map)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

static final org.slf4j.Logger LOG

randomMax

java.lang.Double randomMax

maxProbabilityMultiplier

int maxProbabilityMultiplier

map

java.util.Map<T,WeightedRandomSelection.WeightedObject> map

cummulativeMap

java.util.TreeMap<java.lang.Double,T> cummulativeMap

rwLock

java.util.concurrent.locks.ReadWriteLock rwLock

Constructor Detail

WeightedRandomSelectionImpl

WeightedRandomSelectionImpl()

WeightedRandomSelectionImpl

WeightedRandomSelectionImpl(int maxMultiplier)

Method Detail

updateMap

public void updateMap(java.util.Map<T,WeightedRandomSelection.WeightedObject> map)

Specified by:

updateMap in interface WeightedRandomSelection<T>

getNextRandom

public T getNextRandom()

Specified by:

getNextRandom in interface WeightedRandomSelection<T>

setMaxProbabilityMultiplier

public void setMaxProbabilityMultiplier(int max)

Specified by:

setMaxProbabilityMultiplier in interface WeightedRandomSelection<T>

getNextRandom

public T getNextRandom(java.util.Collection<T> selectedNodes)

Specified by:

getNextRandom in interface WeightedRandomSelection<T>