org.eigenbase.relopt
Class RelOptUtil.InputFinder

java.lang.Object
  org.eigenbase.rex.RexVisitorImpl<Void>
      org.eigenbase.relopt.RelOptUtil.InputFinder

All Implemented Interfaces:

RexVisitor<Void>

Enclosing class:

RelOptUtil

public static class RelOptUtil.InputFinder
extends RexVisitorImpl<Void>

Visitor which builds a bitmap of the inputs used by an expression.

Field Summary

private BitSet

rexRefSet

Fields inherited from class org.eigenbase.rex.RexVisitorImpl

deep

Constructor Summary

RelOptUtil.InputFinder(BitSet rexRefSet)

Method Summary

void	apply(RexNode[] exprs, RexNode expr) Applies this visitor to an array of expressions and an optional single expression.
Void	visitInputRef(RexInputRef inputRef)

Methods inherited from class org.eigenbase.rex.RexVisitorImpl

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

Methods inherited from class java.lang.Object

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

Field Detail

rexRefSet

private final BitSet rexRefSet

Constructor Detail

RelOptUtil.InputFinder

public RelOptUtil.InputFinder(BitSet rexRefSet)

Method Detail

visitInputRef

public Void visitInputRef(RexInputRef inputRef)

Specified by:

visitInputRef in interface RexVisitor<Void>

Overrides:

visitInputRef in class RexVisitorImpl<Void>

apply

public void apply(RexNode[] exprs,
                  RexNode expr)

Applies this visitor to an array of expressions and an optional single expression.