io.druid.query.aggregation.datasketches.quantiles

Class DoublesSketchToHistogramPostAggregator

java.lang.Object

io.druid.query.aggregation.datasketches.quantiles.DoublesSketchToHistogramPostAggregator

All Implemented Interfaces:

Cacheable, PostAggregator

public class DoublesSketchToHistogramPostAggregator
extends Object
implements PostAggregator

Constructor Summary

Constructors

Constructor and Description
DoublesSketchToHistogramPostAggregator(String name, PostAggregator field, double[] splitPoints)

Method Summary

Modifier and Type	Method and Description
Object	compute(Map<String,Object> combinedAggregators)
PostAggregator	decorate(Map<String,AggregatorFactory> map) Returns a richer post aggregator which are built from the given aggregators with their names and some accessible environmental variables such as ones in the object scope.
boolean	equals(Object o)
byte[]	getCacheKey() Get a byte array used as a cache key.
Comparator<double[]>	getComparator()
Set<String>	getDependentFields()
PostAggregator	getField()
String	getName()
double[]	getSplitPoints()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DoublesSketchToHistogramPostAggregator

public DoublesSketchToHistogramPostAggregator(String name,
                                              PostAggregator field,
                                              double[] splitPoints)

Method Detail

compute

public Object compute(Map<String,Object> combinedAggregators)

Specified by:

compute in interface PostAggregator

getName

public String getName()

Specified by:

getName in interface PostAggregator

getField

public PostAggregator getField()

getSplitPoints

public double[] getSplitPoints()

getComparator

public Comparator<double[]> getComparator()

Specified by:

getComparator in interface PostAggregator

getDependentFields

public Set<String> getDependentFields()

Specified by:

getDependentFields in interface PostAggregator

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getCacheKey

public byte[] getCacheKey()

Description copied from interface: Cacheable

Get a byte array used as a cache key.

Specified by:

getCacheKey in interface Cacheable

Returns:

a cache key

decorate

public PostAggregator decorate(Map<String,AggregatorFactory> map)

Description copied from interface: PostAggregator

Returns a richer post aggregator which are built from the given aggregators with their names and some accessible environmental variables such as ones in the object scope.

Specified by:

decorate in interface PostAggregator

Parameters:

map - A map of aggregator factories with their names.