org.apache.giraph.aggregators

Class BooleanAndAggregator

java.lang.Object

org.apache.giraph.aggregators.BasicAggregator<org.apache.hadoop.io.BooleanWritable>

org.apache.giraph.aggregators.BooleanAndAggregator

All Implemented Interfaces:

Aggregator<org.apache.hadoop.io.BooleanWritable>

public class BooleanAndAggregator
extends BasicAggregator<org.apache.hadoop.io.BooleanWritable>

Aggregator for calculating the AND function over boolean values. The default value when nothing is aggregated is true.

Constructor Summary

Constructors

Constructor and Description
BooleanAndAggregator()

Method Summary

Modifier and Type	Method and Description
void	aggregate(org.apache.hadoop.io.BooleanWritable value) Add a new value.
org.apache.hadoop.io.BooleanWritable	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

BooleanAndAggregator

public BooleanAndAggregator()

Method Detail

aggregate

public void aggregate(org.apache.hadoop.io.BooleanWritable value)

Description copied from interface: Aggregator

Add a new value. Needs to be commutative and associative

Parameters:

value - Value to be aggregated.

createInitialValue

public org.apache.hadoop.io.BooleanWritable 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