org.apache.crunch.fn

Class Aggregators.SimpleAggregator<T>

java.lang.Object

org.apache.crunch.fn.Aggregators.SimpleAggregator<T>

All Implemented Interfaces:

Serializable, Aggregator<T>

Direct Known Subclasses:

LAggregator

Enclosing class:

Aggregators

public abstract static class Aggregators.SimpleAggregator<T>
extends Object
implements Aggregator<T>

Base class for aggregators that do not require any initialization.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SimpleAggregator()

Method Summary

Modifier and Type	Method and Description
void	initialize(org.apache.hadoop.conf.Configuration conf) Perform any setup of this instance that is required prior to processing inputs.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.crunch.Aggregator

reset, results, update

Constructor Detail

SimpleAggregator

public SimpleAggregator()

Method Detail

initialize

public void initialize(org.apache.hadoop.conf.Configuration conf)

Description copied from interface: Aggregator

Perform any setup of this instance that is required prior to processing inputs.

Specified by:

initialize in interface Aggregator<T>

Parameters:

conf - Hadoop configuration