net.sf.farrago.fennel.rel
Class CalcRelSplitter.MaxInputFinder

java.lang.Object
  org.eigenbase.rex.RexVisitorImpl<Void>
      net.sf.farrago.fennel.rel.CalcRelSplitter.MaxInputFinder

All Implemented Interfaces:

RexVisitor<Void>

Enclosing class:

CalcRelSplitter

private static class CalcRelSplitter.MaxInputFinder
extends RexVisitorImpl<Void>

Finds the highest level used by any of the inputs of a given expression.

Field Summary

private int[]	exprLevels
(package private) int	level

Fields inherited from class org.eigenbase.rex.RexVisitorImpl

deep

Constructor Summary

CalcRelSplitter.MaxInputFinder(int[] exprLevels)

Method Summary

int	maxInputFor(RexNode expr) Returns the highest level of any of the inputs of an expression.
Void	visitLocalRef(RexLocalRef localRef)

Methods inherited from class org.eigenbase.rex.RexVisitorImpl

visitArrayAnd, visitArrayOr, visitCall, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitInputRef, visitLiteral, visitOver, visitRangeRef

Methods inherited from class java.lang.Object

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

Field Detail

level

int level

exprLevels

private final int[] exprLevels

Constructor Detail

CalcRelSplitter.MaxInputFinder

CalcRelSplitter.MaxInputFinder(int[] exprLevels)

Method Detail

visitLocalRef

public Void visitLocalRef(RexLocalRef localRef)

Specified by:

visitLocalRef in interface RexVisitor<Void>

Overrides:

visitLocalRef in class RexVisitorImpl<Void>

maxInputFor

public int maxInputFor(RexNode expr)

Returns the highest level of any of the inputs of an expression.