saffron.opt
Class RelSubset.CheapestPlanReplacer

java.lang.Object
  |
  +--saffron.util.RelVisitor
        |
        +--saffron.opt.RelSubset.CheapestPlanReplacer

Enclosing class:

RelSubset

class RelSubset.CheapestPlanReplacer

extends RelVisitor

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

Field Summary

(package private) Planner

planner

Constructor Summary

(package private)

RelSubset.CheapestPlanReplacer(Planner planner)

Method Summary

void	visit(Rel p, int ordinal, Rel parent)

Methods inherited from class java.lang.Object

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

Field Detail

planner

Planner planner

Constructor Detail

RelSubset.CheapestPlanReplacer

RelSubset.CheapestPlanReplacer(Planner planner)

Method Detail

visit

public void visit(Rel p,
                  int ordinal,
                  Rel parent)

Overrides:

visit in class RelVisitor