storm.trident.operation.builtin
Class Sum

java.lang.Object
  storm.trident.operation.builtin.Sum

All Implemented Interfaces:

java.io.Serializable, CombinerAggregator<java.lang.Number>

public class Sum
extends java.lang.Object
implements CombinerAggregator<java.lang.Number>

See Also:

Serialized Form

Constructor Summary

Sum()

Method Summary

java.lang.Number	combine(java.lang.Number val1, java.lang.Number val2)
java.lang.Number	init(TridentTuple tuple)
java.lang.Number	zero()

Methods inherited from class java.lang.Object

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

Constructor Detail

Sum

public Sum()

Method Detail

init

public java.lang.Number init(TridentTuple tuple)

Specified by:

init in interface CombinerAggregator<java.lang.Number>

combine

public java.lang.Number combine(java.lang.Number val1,
                                java.lang.Number val2)

Specified by:

combine in interface CombinerAggregator<java.lang.Number>

zero

public java.lang.Number zero()

Specified by:

zero in interface CombinerAggregator<java.lang.Number>