org.apache.giraph.aggregators.matrix.dense

Class LongDenseVectorSumAggregator

java.lang.Object

org.apache.giraph.aggregators.BasicAggregator<LongDenseVector>

org.apache.giraph.aggregators.matrix.dense.LongDenseVectorSumAggregator

All Implemented Interfaces:

Aggregator<LongDenseVector>

public class LongDenseVectorSumAggregator
extends BasicAggregator<LongDenseVector>

The long dense vector aggregator is used to aggregate long dense vectors.

Constructor Summary

Constructors

Constructor and Description
LongDenseVectorSumAggregator()

Method Summary

Modifier and Type	Method and Description
void	aggregate(LongDenseVector vector) Add a new value.
LongDenseVector	createInitialValue() Return new aggregated value which is neutral to aggregate operation.

Methods inherited from class org.apache.giraph.aggregators.BasicAggregator

getAggregatedValue, reset, setAggregatedValue

Methods inherited from class java.lang.Object

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

Constructor Detail

LongDenseVectorSumAggregator

public LongDenseVectorSumAggregator()

Method Detail

createInitialValue

public LongDenseVector createInitialValue()

Description copied from interface: Aggregator

Return new aggregated value which is neutral to aggregate operation. Must be changeable without affecting internals of Aggregator

Returns:

Neutral value

aggregate

public void aggregate(LongDenseVector vector)

Description copied from interface: Aggregator

Add a new value. Needs to be commutative and associative

Parameters:

vector - Value to be aggregated.