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

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

Type Parameters:

Key - the input key type

Value - the input value type

All Implemented Interfaces:

AggType<Key,Value,Key,Long,Long,Long,Long>

public class LongSumAggregation<Key,Value>
extends Object
implements AggType<Key,Value,Key,Long,Long,Long,Long>

The predefined sum aggregation for values of type long.

Constructor Summary

LongSumAggregation()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

LongSumAggregation

public LongSumAggregation()

Method Detail

getCollator

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

Specified by:

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

getMapper

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

Specified by:

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

getCombinerFactory

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

Specified by:

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

getReducerFactory

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

Specified by:

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