Package io.prestosql.operator.window

Class LagFunction

java.lang.Object

io.prestosql.spi.function.ValueWindowFunction

io.prestosql.operator.window.LagFunction

All Implemented Interfaces:

WindowFunction

public class LagFunction
extends ValueWindowFunction

Field Summary

Fields inherited from class io.prestosql.spi.function.ValueWindowFunction

windowIndex

Constructor Summary

Constructors

Constructor	Description
LagFunction(List<Integer> argumentChannels, boolean ignoreNulls)

Method Summary

Modifier and Type	Method	Description
void	processRow(BlockBuilder output, int frameStart, int frameEnd, int currentPosition)

Methods inherited from class io.prestosql.spi.function.ValueWindowFunction

processRow, reset, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

LagFunction

public LagFunction(List<Integer> argumentChannels,
                   boolean ignoreNulls)

Method Detail

processRow

public void processRow(BlockBuilder output,
                       int frameStart,
                       int frameEnd,
                       int currentPosition)

Specified by:

processRow in class ValueWindowFunction