Package org.apache.druid.query.aggregation.firstlast.first

Class NumericFirstAggregator

java.lang.Object

org.apache.druid.query.aggregation.firstlast.first.NumericFirstAggregator

All Implemented Interfaces:

Closeable, AutoCloseable, Aggregator

Direct Known Subclasses:

DoubleFirstAggregator, FloatFirstAggregator, LongFirstAggregator

public abstract class NumericFirstAggregator
extends Object
implements Aggregator

Base type for on heap 'first' aggregator for primitive numeric column selectors

Constructor Summary

Constructors

Constructor	Description
NumericFirstAggregator(BaseLongColumnValueSelector timeSelector, ColumnValueSelector valueSelector, boolean needsFoldCheck)

Method Summary

Modifier and Type	Method	Description
void	aggregate()	Performs aggregation.
void	close()

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, get, getDouble, getFloat, getLong, isNull

Constructor Details

NumericFirstAggregator

public NumericFirstAggregator(BaseLongColumnValueSelector timeSelector,
 ColumnValueSelector valueSelector,
 boolean needsFoldCheck)

Method Details

aggregate

public void aggregate()

Description copied from interface: Aggregator

Performs aggregation.

Specified by:

aggregate 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