org.eigenbase.relopt
Class VisitorRelVisitor

java.lang.Object
  org.eigenbase.rel.RelVisitor
      org.eigenbase.relopt.VisitorRelVisitor

public class VisitorRelVisitor
extends RelVisitor

Walks over a tree of relational expressions, walking a RexShuttle over every expression in that tree.

Since:

22 October, 2001

Version:

$Id: //open/dev/farrago/src/org/eigenbase/relopt/VisitorRelVisitor.java#10 $

Author:

jhyde

Field Summary

protected RexShuttle

shuttle

Constructor Summary

VisitorRelVisitor(RexShuttle visitor)

Method Summary

void	visit(RelNode p, int ordinal, RelNode parent) Visits a node during a traversal.

Methods inherited from class org.eigenbase.rel.RelVisitor

go, replaceRoot

Methods inherited from class java.lang.Object

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

Field Detail

shuttle

protected final RexShuttle shuttle

Constructor Detail

VisitorRelVisitor

public VisitorRelVisitor(RexShuttle visitor)

Method Detail

visit

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

Description copied from class: RelVisitor

Visits a node during a traversal.

Overrides:

visit in class RelVisitor

Parameters:

p - Node to visit

ordinal - Ordinal of node within its parent

parent - Parent of the node, or null if it is the root of the traversal