org.eigenbase.rex
Class RexProgram.ConstantFinder

java.lang.Object
  org.eigenbase.rex.RexProgram.ConstantFinder

All Implemented Interfaces:

RexVisitor<Boolean>

Enclosing class:

RexProgram

private class RexProgram.ConstantFinder
extends Object
implements RexVisitor<Boolean>

Walks over an expression and determines whether it is constant.

Constructor Summary

private

RexProgram.ConstantFinder()

Method Summary

Boolean	visitCall(RexCall call)
Boolean	visitCorrelVariable(RexCorrelVariable correlVariable)
Boolean	visitDynamicParam(RexDynamicParam dynamicParam)
Boolean	visitFieldAccess(RexFieldAccess fieldAccess)
Boolean	visitInputRef(RexInputRef inputRef)
Boolean	visitLiteral(RexLiteral literal)
Boolean	visitLocalRef(RexLocalRef localRef)
Boolean	visitOver(RexOver over)
Boolean	visitRangeRef(RexRangeRef rangeRef)

Methods inherited from class java.lang.Object

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

Constructor Detail

RexProgram.ConstantFinder

private RexProgram.ConstantFinder()

Method Detail

visitLiteral

public Boolean visitLiteral(RexLiteral literal)

Specified by:

visitLiteral in interface RexVisitor<Boolean>

visitInputRef

public Boolean visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<Boolean>

visitLocalRef

public Boolean visitLocalRef(RexLocalRef localRef)

Specified by:

visitLocalRef in interface RexVisitor<Boolean>

visitOver

public Boolean visitOver(RexOver over)

Specified by:

visitOver in interface RexVisitor<Boolean>

visitCorrelVariable

public Boolean visitCorrelVariable(RexCorrelVariable correlVariable)

Specified by:

visitCorrelVariable in interface RexVisitor<Boolean>

visitDynamicParam

public Boolean visitDynamicParam(RexDynamicParam dynamicParam)

Specified by:

visitDynamicParam in interface RexVisitor<Boolean>

visitCall

public Boolean visitCall(RexCall call)

Specified by:

visitCall in interface RexVisitor<Boolean>

visitRangeRef

public Boolean visitRangeRef(RexRangeRef rangeRef)

Specified by:

visitRangeRef in interface RexVisitor<Boolean>

visitFieldAccess

public Boolean visitFieldAccess(RexFieldAccess fieldAccess)

Specified by:

visitFieldAccess in interface RexVisitor<Boolean>