Package org.apache.calcite.rex

Class RexProgram.ConstantFinder

java.lang.Object

org.apache.calcite.rex.RexUtil.ConstantFinder

org.apache.calcite.rex.RexProgram.ConstantFinder

All Implemented Interfaces:

RexVisitor<java.lang.Boolean>

Enclosing class:

RexProgram

private class RexProgram.ConstantFinder
extends RexUtil.ConstantFinder

Walks over an expression and determines whether it is constant.

Field Summary

Fields inherited from class org.apache.calcite.rex.RexUtil.ConstantFinder

INSTANCE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ConstantFinder()

Method Summary

Modifier and Type	Method	Description
java.lang.Boolean	visitCorrelVariable(RexCorrelVariable correlVariable)
java.lang.Boolean	visitLocalRef(RexLocalRef localRef)
java.lang.Boolean	visitOver(RexOver over)

Methods inherited from class org.apache.calcite.rex.RexUtil.ConstantFinder

visitCall, visitDynamicParam, visitFieldAccess, visitInputRef, visitLiteral, visitPatternFieldRef, visitRangeRef, visitSubQuery, visitTableInputRef

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantFinder

private ConstantFinder()

Method Detail

visitLocalRef

public java.lang.Boolean visitLocalRef(RexLocalRef localRef)

Specified by:

visitLocalRef in interface RexVisitor<java.lang.Boolean>

Overrides:

visitLocalRef in class RexUtil.ConstantFinder

visitOver

public java.lang.Boolean visitOver(RexOver over)

Specified by:

visitOver in interface RexVisitor<java.lang.Boolean>

Overrides:

visitOver in class RexUtil.ConstantFinder

visitCorrelVariable

public java.lang.Boolean visitCorrelVariable(RexCorrelVariable correlVariable)

Specified by:

visitCorrelVariable in interface RexVisitor<java.lang.Boolean>

Overrides:

visitCorrelVariable in class RexUtil.ConstantFinder