com.caffinc.jaggr.core.operations

Class TopNOperation<T>

java.lang.Object

com.caffinc.jaggr.core.operations.TopNOperation<T>

All Implemented Interfaces:

Operation

public class TopNOperation<T>
extends Object
implements Operation

Computes the Top N objects in the data

Since:

11/30/2016

Author:

Sriram

Constructor Summary

Constructors

Constructor and Description
TopNOperation(String field, int n, Comparator<T> comparator)

Method Summary

Methods

Modifier and Type	Method and Description
Object	aggregate(Object previousAccumulatedValue, Map<String,Object> object)
Object	result(Object accumulatedValue)

Methods inherited from class java.lang.Object

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

Constructor Detail

TopNOperation

public TopNOperation(String field,
             int n,
             Comparator<T> comparator)

Method Detail

aggregate

public Object aggregate(Object previousAccumulatedValue,
               Map<String,Object> object)

Specified by:

aggregate in interface Operation

result

public Object result(Object accumulatedValue)

Specified by:

result in interface Operation