org.apache.calcite.rel.metadata

Class RelMdUniqueKeys

java.lang.Object

org.apache.calcite.rel.metadata.RelMdUniqueKeys

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.UniqueKeys>

public class RelMdUniqueKeys
extends Object
implements MetadataHandler<BuiltInMetadata.UniqueKeys>

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

Constructor Summary

Constructors

Modifier	Constructor and Description
private	RelMdUniqueKeys()

Method Summary

Modifier and Type	Method and Description
MetadataDef<BuiltInMetadata.UniqueKeys>	getDef()
Set<ImmutableBitSet>	getUniqueKeys(Aggregate rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Correlate rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Filter rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Join rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Project rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(RelNode rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(SemiJoin rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(SetOp rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Sort rel, RelMetadataQuery mq, 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

Constructor Detail

RelMdUniqueKeys

private RelMdUniqueKeys()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.UniqueKeys> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.UniqueKeys>

getUniqueKeys

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

getUniqueKeys

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

getUniqueKeys

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

getUniqueKeys

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

getUniqueKeys

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

getUniqueKeys

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

getUniqueKeys

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

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(SetOp rel,
                                          RelMetadataQuery mq,
                                          boolean ignoreNulls)

getUniqueKeys

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