io.prestosql.operator

Class TopNProcessor

java.lang.Object

io.prestosql.operator.TopNProcessor

public class TopNProcessor
extends Object

Returns the top N rows from the source sorted according to the specified ordering in the keyChannelIndex channel.

Constructor Summary

Constructors

Constructor and Description
TopNProcessor(AggregatedMemoryContext aggregatedMemoryContext, List<Type> types, int n, List<Integer> sortChannels, List<SortOrder> sortOrders)

Method Summary

Modifier and Type	Method and Description
void	addInput(Page page)
Page	getOutput()
boolean	noMoreOutput()

Methods inherited from class java.lang.Object

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

Constructor Detail

TopNProcessor

public TopNProcessor(AggregatedMemoryContext aggregatedMemoryContext,
                     List<Type> types,
                     int n,
                     List<Integer> sortChannels,
                     List<SortOrder> sortOrders)

Method Detail

addInput

public void addInput(Page page)

getOutput

public Page getOutput()

noMoreOutput

public boolean noMoreOutput()