Package org.apache.druid.query.aggregation

Class DoubleSumBufferAggregator

java.lang.Object

org.apache.druid.query.aggregation.SimpleDoubleBufferAggregator

org.apache.druid.query.aggregation.DoubleSumBufferAggregator

All Implemented Interfaces:

BufferAggregator, HotLoopCallee

public class DoubleSumBufferAggregator
extends SimpleDoubleBufferAggregator

Method Summary

Modifier and Type	Method	Description
void	aggregate(ByteBuffer buf, int position, double value)
void	init(ByteBuffer buf, int position)	Initializes the buffer location Implementations of this method must initialize the byte buffer at the given position Implementations must not change the position, limit or mark of the given buffer This method must not exceed the number of bytes returned by AggregatorFactory.getMaxIntermediateSizeWithNulls() in the corresponding AggregatorFactory
void	putFirst(ByteBuffer buf, int position, double value)	Faster equivalent to aggregator.init(buf, position); aggregator.aggregate(buf, position, value);

Methods inherited from class org.apache.druid.query.aggregation.SimpleDoubleBufferAggregator

aggregate, close, get, getDouble, getFloat, getLong, getSelector, inspectRuntimeShape

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.BufferAggregator

isNull, relocate

Method Detail

init

public void init(ByteBuffer buf,
                 int position)

Description copied from interface: BufferAggregator

Initializes the buffer location Implementations of this method must initialize the byte buffer at the given position Implementations must not change the position, limit or mark of the given buffer This method must not exceed the number of bytes returned by AggregatorFactory.getMaxIntermediateSizeWithNulls() in the corresponding AggregatorFactory

Parameters:

buf - byte buffer to initialize

position - offset within the byte buffer for initialization

putFirst

public void putFirst(ByteBuffer buf,
                     int position,
                     double value)

Description copied from class: SimpleDoubleBufferAggregator

Faster equivalent to aggregator.init(buf, position); aggregator.aggregate(buf, position, value);

Specified by:

putFirst in class SimpleDoubleBufferAggregator

aggregate

public void aggregate(ByteBuffer buf,
                      int position,
                      double value)

Specified by:

aggregate in class SimpleDoubleBufferAggregator