org.eigenbase.oj.stmt
Class OJPreparingStmt.JavaRelFinder

java.lang.Object
  org.eigenbase.rel.RelVisitor
      org.eigenbase.oj.stmt.OJPreparingStmt.JavaRelFinder

Enclosing class:

OJPreparingStmt

public static class OJPreparingStmt.JavaRelFinder
extends RelVisitor

Walks a RelNode tree and determines if it contains any JavaRels.

Author:

Zelaine Fong

Field Summary

private boolean

javaRelFound

Constructor Summary

OJPreparingStmt.JavaRelFinder()

Method Summary

boolean	containsJavaRel()
void	visit(RelNode node, 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

javaRelFound

private boolean javaRelFound

Constructor Detail

OJPreparingStmt.JavaRelFinder

public OJPreparingStmt.JavaRelFinder()

Method Detail

visit

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

Description copied from class: RelVisitor

Visits a node during a traversal.

Overrides:

visit in class RelVisitor

Parameters:

node - 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

containsJavaRel

public boolean containsJavaRel()