org.apache.calcite.rel.metadata

Class RelMdUniqueKeys

java.lang.Object

org.apache.calcite.rel.metadata.RelMdUniqueKeys

public class RelMdUniqueKeys
extends Object

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

Field Summary

Fields

Modifier and Type	Field and Description
static RelMetadataProvider	SOURCE

Method Summary

Methods

Modifier and Type	Method and Description
Set<ImmutableBitSet>	getUniqueKeys(Aggregate rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Correlate rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Filter rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Join rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Project rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(RelNode rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(SemiJoin rel, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Sort rel, boolean ignoreNulls)

Methods inherited from class java.lang.Object

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

Field Detail

SOURCE

public static final RelMetadataProvider SOURCE

Method Detail

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Filter rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Sort rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Correlate rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Project rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Join rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(SemiJoin rel,
                                 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Aggregate rel,
                                 boolean ignoreNulls)

getUniqueKeys

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