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

java.lang.Object
  org.eigenbase.rex.RexShuttle
      net.sf.farrago.fennel.rel.CalcRelSplitter.InputToCommonExprConverter

All Implemented Interfaces:

RexVisitor<RexNode>

Enclosing class:

CalcRelSplitter

private static class CalcRelSplitter.InputToCommonExprConverter
extends RexShuttle

Shuttle which converts every reference to an input field in an expression to a reference to a common sub-expression.

Field Summary

private int[]	exprInverseOrdinals
private int[]	exprLevels
private int[]	inputExprOrdinals
private int	level

Constructor Summary

CalcRelSplitter.InputToCommonExprConverter(int[] exprInverseOrdinals, int[] exprLevels, int level, int[] inputExprOrdinals)

Method Summary

RexNode	visitInputRef(RexInputRef input)
RexNode	visitLocalRef(RexLocalRef local)

Methods inherited from class org.eigenbase.rex.RexShuttle

apply, apply, visitArray, visitCall, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitLiteral, visitOver, visitRangeRef, visitWindow

Methods inherited from class java.lang.Object

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

Field Detail

exprInverseOrdinals

private final int[] exprInverseOrdinals

exprLevels

private final int[] exprLevels

level

private final int level

inputExprOrdinals

private final int[] inputExprOrdinals

Constructor Detail

CalcRelSplitter.InputToCommonExprConverter

public CalcRelSplitter.InputToCommonExprConverter(int[] exprInverseOrdinals,
                                                  int[] exprLevels,
                                                  int level,
                                                  int[] inputExprOrdinals)

Method Detail

visitInputRef

public RexNode visitInputRef(RexInputRef input)

Specified by:

visitInputRef in interface RexVisitor<RexNode>

Overrides:

visitInputRef in class RexShuttle

visitLocalRef

public RexNode visitLocalRef(RexLocalRef local)

Specified by:

visitLocalRef in interface RexVisitor<RexNode>

Overrides:

visitLocalRef in class RexShuttle