Package org.apache.calcite.rel.rules

Class ReduceExpressionsRule.RexReplacer

java.lang.Object

org.apache.calcite.rex.RexShuttle

org.apache.calcite.rel.rules.ReduceExpressionsRule.RexReplacer

All Implemented Interfaces:

RexVisitor<RexNode>

Enclosing class:

ReduceExpressionsRule

protected static class ReduceExpressionsRule.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

Fields

Modifier and Type	Field	Description
private java.util.List<java.lang.Boolean>	addCasts
private java.util.List<RexNode>	reducedValues
private java.util.List<RexNode>	reducibleExps
private RexSimplify	simplify
private RexUnknownAs	unknownAs

Constructor Summary

Constructors

Constructor	Description
RexReplacer(RexSimplify simplify, RexUnknownAs unknownAs, java.util.List<RexNode> reducibleExps, java.util.List<RexNode> reducedValues, java.util.List<java.lang.Boolean> addCasts)

Method Summary

Modifier and Type	Method	Description
private RexNode	visit(RexNode call)
RexNode	visitCall(RexCall call)
RexNode	visitInputRef(RexInputRef inputRef)

Methods inherited from class org.apache.calcite.rex.RexShuttle

apply, apply, apply, mutate, visitArray, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitFieldCollations, visitList, visitList, visitLiteral, visitLocalRef, visitOver, visitPatternFieldRef, visitRangeRef, visitSubQuery, visitTableInputRef, visitWindow

Methods inherited from class java.lang.Object

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

Field Detail

simplify

private final RexSimplify simplify

unknownAs

private final RexUnknownAs unknownAs

reducibleExps

private final java.util.List<RexNode> reducibleExps

reducedValues

private final java.util.List<RexNode> reducedValues

addCasts

private final java.util.List<java.lang.Boolean> addCasts

Constructor Detail

RexReplacer

RexReplacer(RexSimplify simplify,
            RexUnknownAs unknownAs,
            java.util.List<RexNode> reducibleExps,
            java.util.List<RexNode> reducedValues,
            java.util.List<java.lang.Boolean> addCasts)

Method Detail

visitInputRef

public RexNode visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<RexNode>

Overrides:

visitInputRef in class RexShuttle

visitCall

public RexNode visitCall(RexCall call)

Specified by:

visitCall in interface RexVisitor<RexNode>

Overrides:

visitCall in class RexShuttle

visit

private RexNode visit(RexNode call)