net.sf.farrago.query
Class FarragoReduceExpressionsRule.RexReplacer

java.lang.Object
  org.eigenbase.rex.RexShuttle
      net.sf.farrago.query.FarragoReduceExpressionsRule.RexReplacer

All Implemented Interfaces:

RexVisitor<RexNode>

Enclosing class:

FarragoReduceExpressionsRule

private static class FarragoReduceExpressionsRule.RexReplacer
extends RexShuttle

Replaces expressions with their reductions. Note that we only have to look for RexCall, since nothing else is reducible in the first place.

Field Summary

private List<Boolean>	addCasts
private List<RexNode>	reducedValues
private List<RexNode>	reducibleExps
private RexBuilder	rexBuilder

Constructor Summary

FarragoReduceExpressionsRule.RexReplacer(RexBuilder rexBuilder, List<RexNode> reducibleExps, List<RexNode> reducedValues, List<Boolean> addCasts)

Method Summary

RexNode

visitCall(RexCall call)

Methods inherited from class org.eigenbase.rex.RexShuttle

apply, apply, visitArray, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitInputRef, visitLiteral, visitLocalRef, visitOver, visitRangeRef, visitWindow

Methods inherited from class java.lang.Object

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

Field Detail

rexBuilder

private final RexBuilder rexBuilder

reducibleExps

private final List<RexNode> reducibleExps

reducedValues

private final List<RexNode> reducedValues

addCasts

private final List<Boolean> addCasts

Constructor Detail

FarragoReduceExpressionsRule.RexReplacer

FarragoReduceExpressionsRule.RexReplacer(RexBuilder rexBuilder,
                                         List<RexNode> reducibleExps,
                                         List<RexNode> reducedValues,
                                         List<Boolean> addCasts)

Method Detail

visitCall

public RexNode visitCall(RexCall call)

Specified by:

visitCall in interface RexVisitor<RexNode>

Overrides:

visitCall in class RexShuttle