io.prestosql.operator

Class LookupJoinPageBuilder

java.lang.Object

io.prestosql.operator.LookupJoinPageBuilder

public class LookupJoinPageBuilder
extends Object

This page builder creates pages with dictionary blocks: normal dictionary blocks for the probe side and the original blocks for the build side.

TODO use dictionary blocks (probably extended kind) to avoid data copying for build side

Constructor Summary

Constructors

Constructor and Description
LookupJoinPageBuilder(List<Type> buildTypes)

Method Summary

Modifier and Type	Method and Description
void	appendNullForBuild(JoinProbe probe) append the index for the probe and append nulls for the build
void	appendRow(JoinProbe probe, LookupSource lookupSource, long joinPosition) append the index for the probe and copy the row for the build
Page	build(JoinProbe probe)
boolean	isEmpty()
boolean	isFull()
void	reset()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LookupJoinPageBuilder

public LookupJoinPageBuilder(List<Type> buildTypes)

Method Detail

isFull

public boolean isFull()

isEmpty

public boolean isEmpty()

reset

public void reset()

appendRow

public void appendRow(JoinProbe probe,
                      LookupSource lookupSource,
                      long joinPosition)

append the index for the probe and copy the row for the build

appendNullForBuild

public void appendNullForBuild(JoinProbe probe)

append the index for the probe and append nulls for the build

build

public Page build(JoinProbe probe)

toString

public String toString()

Overrides:

toString in class Object