io.prestosql.sql.planner.iterative.rule

Class PruneCrossJoinColumns

java.lang.Object

io.prestosql.sql.planner.iterative.rule.ProjectOffPushDownRule<JoinNode>

io.prestosql.sql.planner.iterative.rule.PruneCrossJoinColumns

All Implemented Interfaces:

Rule<ProjectNode>

public class PruneCrossJoinColumns
extends ProjectOffPushDownRule<JoinNode>

Cross joins don't support output symbol selection, so push the project-off through the node.

Nested Class Summary

Nested classes/interfaces inherited from interface io.prestosql.sql.planner.iterative.Rule

Rule.Context, Rule.Result

Constructor Summary

Constructors

Constructor and Description
PruneCrossJoinColumns()

Method Summary

Modifier and Type	Method and Description
protected Optional<PlanNode>	pushDownProjectOff(PlanNodeIdAllocator idAllocator, JoinNode joinNode, Set<Symbol> referencedOutputs)

Methods inherited from class io.prestosql.sql.planner.iterative.rule.ProjectOffPushDownRule

apply, getPattern

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.sql.planner.iterative.Rule

isEnabled

Constructor Detail

PruneCrossJoinColumns

public PruneCrossJoinColumns()

Method Detail

pushDownProjectOff

protected Optional<PlanNode> pushDownProjectOff(PlanNodeIdAllocator idAllocator,
                                                JoinNode joinNode,
                                                Set<Symbol> referencedOutputs)

Specified by:

pushDownProjectOff in class ProjectOffPushDownRule<JoinNode>