org.apache.calcite.plan.volcano

Class RelSubset.CheapestPlanReplacer

java.lang.Object

org.apache.calcite.plan.volcano.RelSubset.CheapestPlanReplacer

Enclosing class:

RelSubset

static class RelSubset.CheapestPlanReplacer
extends Object

Visitor which walks over a tree of RelSets, replacing each node with the cheapest implementation of the expression.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) VolcanoPlanner	planner

Constructor Summary

Constructors

Constructor and Description
CheapestPlanReplacer(VolcanoPlanner planner)

Method Summary

Modifier and Type	Method and Description
RelNode	visit(RelNode p, int ordinal, RelNode parent)

Methods inherited from class java.lang.Object

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

Field Detail

planner

VolcanoPlanner planner

Constructor Detail

CheapestPlanReplacer

CheapestPlanReplacer(VolcanoPlanner planner)

Method Detail

visit

public RelNode visit(RelNode p,
                     int ordinal,
                     RelNode parent)