org.janusgraph.util.stats

Class ObjectAccumulator<K>

java.lang.Object

org.janusgraph.util.stats.ObjectAccumulator<K>

Type Parameters:

K -

public class ObjectAccumulator<K>
extends Object

This class counts arbitrary objects of type and tries to do so efficiently in time and space. The class offers methods to increase the count of an object by a specified amount or default 1, as well as retrieving the number of times and object has been counted.

Author:

Matthias Broecheler

Constructor Summary

Constructors

Constructor and Description
ObjectAccumulator()
ObjectAccumulator(int initialSize)

Method Summary

Modifier and Type	Method and Description
double	getCount(K o)
double	getCountSave(K o)
K	getMaxObject()
Set<K>	getObjects()
boolean	hasObject(K obj)
double	incBy(K o, double inc) Increases the count of object o by inc and returns the new count value
int	numObjects()
boolean	removeObject(K obj)

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectAccumulator

public ObjectAccumulator()

ObjectAccumulator

public ObjectAccumulator(int initialSize)

Method Detail

incBy

public double incBy(K o,
                    double inc)

Increases the count of object o by inc and returns the new count value

Parameters:

o -

inc -

Returns:

getCount

public double getCount(K o)

getCountSave

public double getCountSave(K o)

getObjects

public Set<K> getObjects()

numObjects

public int numObjects()

hasObject

public boolean hasObject(K obj)

removeObject

public boolean removeObject(K obj)

getMaxObject

public K getMaxObject()