org.eigenbase.rel
Class ProjectRelBase.Checker

java.lang.Object
  org.eigenbase.rex.RexVisitorImpl<Boolean>
      org.eigenbase.rel.ProjectRelBase.Checker

All Implemented Interfaces:

RexVisitor<Boolean>

Enclosing class:

ProjectRelBase

private static class ProjectRelBase.Checker
extends RexVisitorImpl<Boolean>

Visitor which walks over a program and checks validity.

Field Summary

private boolean	fail
(package private) int	failCount
private RelDataType	inputRowType

Fields inherited from class org.eigenbase.rex.RexVisitorImpl

deep

Constructor Summary

private

ProjectRelBase.Checker(RelDataType inputRowType, boolean fail) Creates a Checker.

Method Summary

Boolean	visitFieldAccess(RexFieldAccess fieldAccess)
Boolean	visitInputRef(RexInputRef inputRef)
Boolean	visitLocalRef(RexLocalRef localRef)

Methods inherited from class org.eigenbase.rex.RexVisitorImpl

visitArrayAnd, visitArrayOr, visitCall, visitCorrelVariable, visitDynamicParam, visitLiteral, visitOver, visitRangeRef

Methods inherited from class java.lang.Object

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

Field Detail

fail

private final boolean fail

inputRowType

private final RelDataType inputRowType

failCount

int failCount

Constructor Detail

ProjectRelBase.Checker

private ProjectRelBase.Checker(RelDataType inputRowType,
                               boolean fail)

Creates a Checker.

Parameters:

inputRowType - Input row type to expressions

fail - Whether to throw if checker finds an error

Method Detail

visitInputRef

public Boolean visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<Boolean>

Overrides:

visitInputRef in class RexVisitorImpl<Boolean>

visitLocalRef

public Boolean visitLocalRef(RexLocalRef localRef)

Specified by:

visitLocalRef in interface RexVisitor<Boolean>

Overrides:

visitLocalRef in class RexVisitorImpl<Boolean>

visitFieldAccess

public Boolean visitFieldAccess(RexFieldAccess fieldAccess)

Specified by:

visitFieldAccess in interface RexVisitor<Boolean>

Overrides:

visitFieldAccess in class RexVisitorImpl<Boolean>