org.apache.hama.graph

Class MaxAggregator

java.lang.Object

org.apache.hama.graph.AbstractAggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>

org.apache.hama.graph.MaxAggregator

All Implemented Interfaces:

Aggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>

public class MaxAggregator
extends AbstractAggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>

Constructor Summary

Constructors

Constructor and Description
MaxAggregator()

Method Summary

Methods

Modifier and Type	Method and Description
void	aggregate(Vertex<?,?,org.apache.hadoop.io.IntWritable> vertex, org.apache.hadoop.io.IntWritable value) Observes a value of a vertex after the compute method.
org.apache.hadoop.io.IntWritable	getValue() Gets the value of the aggregator.

Methods inherited from class org.apache.hama.graph.AbstractAggregator

aggregate, finalizeAggregation, getTimesAggregated, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MaxAggregator

public MaxAggregator()

Method Detail

aggregate

public void aggregate(Vertex<?,?,org.apache.hadoop.io.IntWritable> vertex,
             org.apache.hadoop.io.IntWritable value)

Description copied from class: AbstractAggregator

Observes a value of a vertex after the compute method. This is intended to be overriden by the user and is just an empty implementation in this class. Please make sure that you are null-checking vertex, since on a master task this will always be null.

Specified by:

aggregate in interface Aggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>

Overrides:

aggregate in class AbstractAggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>

getValue

public org.apache.hadoop.io.IntWritable getValue()

Description copied from class: AbstractAggregator

Gets the value of the aggregator. This is intended to be overridden by the user and is just an empty implementation in this class (returns null).

Specified by:

getValue in interface Aggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>

Overrides:

getValue in class AbstractAggregator<org.apache.hadoop.io.IntWritable,Vertex<?,?,org.apache.hadoop.io.IntWritable>>