Package org.apache.druid.query.aggregation

Class Histogram

java.lang.Object

org.apache.druid.query.aggregation.Histogram

public class Histogram
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected long[]	bins
protected float[]	breaks
protected long	count
protected float	max
protected float	min

Constructor Summary

Constructors

Constructor	Description
Histogram(float[] breaks)
Histogram(float[] breaks, long[] bins, float min, float max)
Histogram(Histogram other)

Method Summary

Modifier and Type	Method	Description
HistogramVisual	asVisual()	Returns a visual representation of a histogram object.
void	copyFrom(Histogram other)
boolean	equals(Object o)
Histogram	fold(Histogram h)
static Histogram	fromBytes(byte[] bytes)
static Histogram	fromBytes(ByteBuffer buf)
int	hashCode()
void	offer(float d)
byte[]	toBytes()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

breaks

protected float[] breaks

bins

protected long[] bins

count

protected transient long count

min

protected float min

max

protected float max

Constructor Details

Histogram

public Histogram(float[] breaks)

Histogram

public Histogram(float[] breaks,
 long[] bins,
 float min,
 float max)

Histogram

public Histogram(Histogram other)

Method Details

copyFrom

public void copyFrom(Histogram other)

offer

public void offer(float d)

fold

public Histogram fold(Histogram h)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toBytes

public byte[] toBytes()

asVisual

public HistogramVisual asVisual()

Returns a visual representation of a histogram object. Initially returns an array of just the min. and max. values but can also support the addition of quantiles.

Returns:

a visual representation of this histogram

fromBytes

public static Histogram fromBytes(byte[] bytes)

fromBytes

public static Histogram fromBytes(ByteBuffer buf)

toString

public String toString()

Overrides:

toString in class Object