org.eigenbase.rel.metadata
Class RelMdPopulationSize

java.lang.Object
  org.eigenbase.rel.metadata.ReflectiveRelMetadataProvider
      org.eigenbase.rel.metadata.RelMdPopulationSize

All Implemented Interfaces:

RelMetadataProvider, ReflectiveVisitor

public class RelMdPopulationSize
extends ReflectiveRelMetadataProvider

RelMdPopulationSize supplies a default implementation of RelMetadataQuery.getPopulationSize(org.eigenbase.rel.RelNode, java.util.BitSet) for the standard logical algebra.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/rel/metadata/RelMdPopulationSize.java#14 $

Author:

Zelaine Fong

Constructor Summary

RelMdPopulationSize()

Method Summary

Double	getPopulationSize(AggregateRelBase rel, BitSet groupKey)
Double	getPopulationSize(FilterRelBase rel, BitSet groupKey)
Double	getPopulationSize(JoinRelBase rel, BitSet groupKey)
Double	getPopulationSize(ProjectRelBase rel, BitSet groupKey)
Double	getPopulationSize(RelNode rel, BitSet groupKey)
Double	getPopulationSize(SemiJoinRel rel, BitSet groupKey)
Double	getPopulationSize(SortRel rel, BitSet groupKey)
Double	getPopulationSize(UnionRelBase rel, BitSet groupKey)
Double	getPopulationSize(ValuesRelBase rel, BitSet groupKey)

Methods inherited from class org.eigenbase.rel.metadata.ReflectiveRelMetadataProvider

getRelMetadata, mapParameterTypes

Methods inherited from class java.lang.Object

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

Constructor Detail

RelMdPopulationSize

public RelMdPopulationSize()

Method Detail

getPopulationSize

public Double getPopulationSize(FilterRelBase rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(SortRel rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(UnionRelBase rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(JoinRelBase rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(SemiJoinRel rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(AggregateRelBase rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(ValuesRelBase rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(ProjectRelBase rel,
                                BitSet groupKey)

getPopulationSize

public Double getPopulationSize(RelNode rel,
                                BitSet groupKey)