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

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

All Implemented Interfaces:

RexVisitor<Void>

Enclosing class:

CalcRelSplitter

private static class CalcRelSplitter.HighestUsageFinder
extends RexVisitorImpl<Void>

Builds an array of the highest level which contains an expression which uses each expression as an input.

Field Summary

private int	currentLevel
private int[]	maxUsingLevelOrdinals

Fields inherited from class org.eigenbase.rex.RexVisitorImpl

deep

Constructor Summary

CalcRelSplitter.HighestUsageFinder(RexNode[] exprs, int[] exprLevels)

Method Summary

int[]	getMaxUsingLevelOrdinals()
Void	visitLocalRef(RexLocalRef ref)

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

maxUsingLevelOrdinals

private final int[] maxUsingLevelOrdinals

currentLevel

private int currentLevel

Constructor Detail

CalcRelSplitter.HighestUsageFinder

public CalcRelSplitter.HighestUsageFinder(RexNode[] exprs,
                                          int[] exprLevels)

Method Detail

getMaxUsingLevelOrdinals

public int[] getMaxUsingLevelOrdinals()

visitLocalRef

public Void visitLocalRef(RexLocalRef ref)

Specified by:

visitLocalRef in interface RexVisitor<Void>

Overrides:

visitLocalRef in class RexVisitorImpl<Void>