org.eigenbase.rel.metadata
Class RelMdUniqueKeys

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

All Implemented Interfaces:

RelMetadataProvider, ReflectiveVisitor

public class RelMdUniqueKeys
extends ReflectiveRelMetadataProvider

RelMdUniqueKeys supplies a default implementation of RelMetadataQuery.getUniqueKeys(org.eigenbase.rel.RelNode) for the standard logical algebra.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/rel/metadata/RelMdUniqueKeys.java#13 $

Author:

Zelaine Fong

Constructor Summary

RelMdUniqueKeys()

Method Summary

Set<BitSet>	getUniqueKeys(AggregateRelBase rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(CorrelatorRel rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(FilterRelBase rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(JoinRelBase rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(ProjectRelBase rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(RelNode rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(SemiJoinRel rel, boolean ignoreNulls)
Set<BitSet>	getUniqueKeys(SortRel rel, boolean ignoreNulls)

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

RelMdUniqueKeys

RelMdUniqueKeys()

Method Detail

getUniqueKeys

public Set<BitSet> getUniqueKeys(FilterRelBase rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(SortRel rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(CorrelatorRel rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(ProjectRelBase rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(JoinRelBase rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(SemiJoinRel rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(AggregateRelBase rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<BitSet> getUniqueKeys(RelNode rel,
                                 boolean ignoreNulls)