net.sf.saffron.opt
Class RelSubset.CheapestPlanReplacer

java.lang.Object
  |
  +--net.sf.saffron.rel.RelVisitor
        |
        +--net.sf.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) SaffronPlanner

planner

Constructor Summary

(package private)

RelSubset.CheapestPlanReplacer(SaffronPlanner planner)

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

planner

SaffronPlanner planner

Constructor Detail

RelSubset.CheapestPlanReplacer

RelSubset.CheapestPlanReplacer(SaffronPlanner planner)

Method Detail

visit

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

Overrides:

visit in class RelVisitor