org.apache.hadoop.hive.ql.optimizer.calcite.stats

Class FilterSelectivityEstimator

java.lang.Object

org.apache.calcite.rex.RexVisitorImpl<Double>

org.apache.hadoop.hive.ql.optimizer.calcite.stats.FilterSelectivityEstimator

All Implemented Interfaces:

org.apache.calcite.rex.RexVisitor<Double>

public class FilterSelectivityEstimator
extends org.apache.calcite.rex.RexVisitorImpl<Double>

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	LOG

Fields inherited from class org.apache.calcite.rex.RexVisitorImpl

deep

Constructor Summary

Constructors

Constructor and Description
FilterSelectivityEstimator(org.apache.calcite.rel.RelNode childRel, org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Method Summary

Modifier and Type	Method and Description
Double	estimateSelectivity(org.apache.calcite.rex.RexNode predicate)
Double	visitCall(org.apache.calcite.rex.RexCall call)
Double	visitInputRef(org.apache.calcite.rex.RexInputRef inputRef)
Double	visitLiteral(org.apache.calcite.rex.RexLiteral literal)

Methods inherited from class org.apache.calcite.rex.RexVisitorImpl

visitArrayAnd, visitArrayOr, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitLocalRef, visitOver, visitPatternFieldRef, visitRangeRef, visitSubQuery, visitTableInputRef

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rex.RexVisitor

visitEach, visitList, visitList

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Constructor Detail

FilterSelectivityEstimator

public FilterSelectivityEstimator(org.apache.calcite.rel.RelNode childRel,
                                  org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Method Detail

estimateSelectivity

public Double estimateSelectivity(org.apache.calcite.rex.RexNode predicate)

visitInputRef

public Double visitInputRef(org.apache.calcite.rex.RexInputRef inputRef)

Specified by:

visitInputRef in interface org.apache.calcite.rex.RexVisitor<Double>

Overrides:

visitInputRef in class org.apache.calcite.rex.RexVisitorImpl<Double>

visitCall

public Double visitCall(org.apache.calcite.rex.RexCall call)

Specified by:

visitCall in interface org.apache.calcite.rex.RexVisitor<Double>

Overrides:

visitCall in class org.apache.calcite.rex.RexVisitorImpl<Double>

visitLiteral

public Double visitLiteral(org.apache.calcite.rex.RexLiteral literal)

Specified by:

visitLiteral in interface org.apache.calcite.rex.RexVisitor<Double>

Overrides:

visitLiteral in class org.apache.calcite.rex.RexVisitorImpl<Double>