org.apache.hadoop.hive.ql.optimizer.optiq.stats
Class FilterSelectivityEstimator

java.lang.Object
  org.eigenbase.rex.RexVisitorImpl<Double>
      org.apache.hadoop.hive.ql.optimizer.optiq.stats.FilterSelectivityEstimator

All Implemented Interfaces:

org.eigenbase.rex.RexVisitor<Double>

public class FilterSelectivityEstimator
extends org.eigenbase.rex.RexVisitorImpl<Double>

Method Summary

Double	estimateSelectivity(org.eigenbase.rex.RexNode predicate)
Double	visitCall(org.eigenbase.rex.RexCall call)

Methods inherited from class org.eigenbase.rex.RexVisitorImpl

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

Methods inherited from class java.lang.Object

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

Method Detail

estimateSelectivity

public Double estimateSelectivity(org.eigenbase.rex.RexNode predicate)

visitCall

public Double visitCall(org.eigenbase.rex.RexCall call)

Specified by:

visitCall in interface org.eigenbase.rex.RexVisitor<Double>

Overrides:

visitCall in class org.eigenbase.rex.RexVisitorImpl<Double>