com.tangosol.util
Interface InvocableMap.EntryAggregator

All Superinterfaces:

Serializable

All Known Subinterfaces:

InvocableMap.ParallelAwareAggregator

All Known Implementing Classes:

AbstractAggregator, AbstractBigDecimalAggregator, AbstractComparableAggregator, AbstractDoubleAggregator, AbstractLongAggregator, BigDecimalAverage, BigDecimalMax, BigDecimalMin, BigDecimalSum, ComparableMax, ComparableMin, CompositeAggregator, CompositeAggregator.Parallel, Count, DistinctValues, DoubleAverage, DoubleMax, DoubleMin, DoubleSum, GroupAggregator, GroupAggregator.Parallel, LongMax, LongMin, LongSum, PriorityAggregator

Enclosing interface:

InvocableMap

public static interface InvocableMap.EntryAggregator
extends Serializable

An EntryAggregator represents processing that can be directed to occur against some subset of the entries in an InvocableMap, resulting in a aggregated result. Common examples of aggregation include functions such as min(), max() and avg(). However, the concept of aggregation applies to any process that needs to evaluate a group of entries to come up with a single answer.

Method Summary

Object

aggregate(Set setEntries) Process a set of InvocableMap.Entry objects in order to produce an aggregated result.

Method Detail

aggregate

Object aggregate(Set setEntries)

Process a set of InvocableMap.Entry objects in order to produce an aggregated result.

Parameters:

setEntries - a Set of read-only InvocableMap.Entry objects to aggregate

Returns:

the aggregated result from processing the entries