public class Sum extends Object implements CombinerAggregator<Number>
| Constructor and Description |
|---|
Sum() |
public Number init(TridentTuple tuple)
init in interface CombinerAggregator<Number>public Number combine(Number val1, Number val2)
combine in interface CombinerAggregator<Number>public Number zero()
zero in interface CombinerAggregator<Number>Copyright © 2015. All rights reserved.