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Package
org.apache.storm.trident.operation
Interface CombinerAggregator<T>
All Superinterfaces:
Serializable
All Known Implementing Classes:
Count
,
Sum
,
TridentReach.One
public interface
CombinerAggregator<T>
extends
Serializable
Method Summary
All Methods
Instance Methods
Abstract Methods
Modifier and Type
Method
Description
T
combine
(
T
val1,
T
val2)
T
init
(
TridentTuple
tuple)
T
zero
()
Method Details
init
T
init
(
TridentTuple
tuple)
combine
T
combine
(
T
val1,
T
val2)
zero
T
zero
()