com.hazelcast.map.impl

Interface EntryCostEstimator<K,V>

Type Parameters:

K - the type of key which's size going to be estimated.

V - the type of key which's size going to be estimated.

public interface EntryCostEstimator<K,V>

Owned entry cost estimator general contract.

Method Summary

Modifier and Type	Method and Description
void	adjustEstimateBy(long adjustment) Adjust the memory cost estimation by the given adjustment.
long	calculateEntryCost(K key, V value) Calculate the entry's cost in memory
long	calculateValueCost(V value) Calculate the entry's value cost in memory
long	getEstimate() Returns the memory cost estimation so far
void	reset() Reset the current estimation to zero.

Method Detail

getEstimate

long getEstimate()

Returns the memory cost estimation so far

Returns:

the memory cost estimation so far

adjustEstimateBy

void adjustEstimateBy(long adjustment)

Adjust the memory cost estimation by the given adjustment. The adjustmenet can be any negative or positive number.

Parameters:

adjustment - The delta by which the estimation will be adjusted

calculateValueCost

long calculateValueCost(V value)

Calculate the entry's value cost in memory

Parameters:

value - The entry's value

Returns:

The cost of this value in memory.

calculateEntryCost

long calculateEntryCost(K key,
                        V value)

Calculate the entry's cost in memory

Parameters:

key - The key of the entry

value - The value of the entry

Returns:

The memory cost of this key/value pair, plus the entry structure itself.

reset

void reset()

Reset the current estimation to zero.