Package org.apache.druid.query.aggregation.constant

Class LongConstantAggregator

java.lang.Object

org.apache.druid.query.aggregation.constant.LongConstantAggregator

All Implemented Interfaces:

Closeable, AutoCloseable, Aggregator

public class LongConstantAggregator
extends Object
implements Aggregator

This aggregator is a no-op aggregator with a fixed non-null output value. It can be used in scenarios where result is constant such as GroupingAggregatorFactory

Constructor Summary

Constructors

Constructor	Description
LongConstantAggregator(long value)

Method Summary

Modifier and Type	Method	Description
void	aggregate()	Performs aggregation.
void	close()
Object	get()
float	getFloat()
long	getLong()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.query.aggregation.Aggregator

aggregateWithSize, getDouble, isNull

Constructor Details

LongConstantAggregator

public LongConstantAggregator(long value)

Method Details

aggregate

public void aggregate()

Description copied from interface: Aggregator

Performs aggregation.

Specified by:

aggregate in interface Aggregator

get

public Object get()

Specified by:

get in interface Aggregator

getFloat

public float getFloat()

Specified by:

getFloat in interface Aggregator

getLong

public long getLong()

Specified by:

getLong in interface Aggregator

close

public void close()

Specified by:

close in interface Aggregator

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable