com.hazelcast.mapreduce.aggregation.impl
Class DoubleAvgAggregation<Key,Value>

java.lang.Object
  com.hazelcast.mapreduce.aggregation.impl.DoubleAvgAggregation<Key,Value>

Type Parameters:

Key - the input key type

Value - the input value type

All Implemented Interfaces:

AggType<Key,Value,Key,Double,AvgTuple<Long,Double>,AvgTuple<Long,Double>,Double>

public class DoubleAvgAggregation<Key,Value>
extends Object
implements AggType<Key,Value,Key,Double,AvgTuple<Long,Double>,AvgTuple<Long,Double>,Double>

The predefined average aggregation for values of type double.

Constructor Summary

DoubleAvgAggregation()

Method Summary

Collator<Map.Entry<Key,AvgTuple<Long,Double>>,Double>	getCollator()
CombinerFactory<Key,Double,AvgTuple<Long,Double>>	getCombinerFactory()
Mapper<Key,Value,Key,Double>	getMapper(Supplier<Key,Value,Double> supplier)
ReducerFactory<Key,AvgTuple<Long,Double>,AvgTuple<Long,Double>>	getReducerFactory()

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleAvgAggregation

public DoubleAvgAggregation()

Method Detail

getCollator

public Collator<Map.Entry<Key,AvgTuple<Long,Double>>,Double> getCollator()

Specified by:

getCollator in interface AggType<Key,Value,Key,Double,AvgTuple<Long,Double>,AvgTuple<Long,Double>,Double>

getMapper

public Mapper<Key,Value,Key,Double> getMapper(Supplier<Key,Value,Double> supplier)

Specified by:

getMapper in interface AggType<Key,Value,Key,Double,AvgTuple<Long,Double>,AvgTuple<Long,Double>,Double>

getCombinerFactory

public CombinerFactory<Key,Double,AvgTuple<Long,Double>> getCombinerFactory()

Specified by:

getCombinerFactory in interface AggType<Key,Value,Key,Double,AvgTuple<Long,Double>,AvgTuple<Long,Double>,Double>

getReducerFactory

public ReducerFactory<Key,AvgTuple<Long,Double>,AvgTuple<Long,Double>> getReducerFactory()

Specified by:

getReducerFactory in interface AggType<Key,Value,Key,Double,AvgTuple<Long,Double>,AvgTuple<Long,Double>,Double>