org.apache.calcite.rel.metadata

Class RelMdDistinctRowCount

java.lang.Object

org.apache.calcite.rel.metadata.RelMdDistinctRowCount

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.DistinctRowCount>

public class RelMdDistinctRowCount
extends Object
implements MetadataHandler<BuiltInMetadata.DistinctRowCount>

RelMdDistinctRowCount supplies a default implementation of RelMetadataQuery.getDistinctRowCount(org.apache.calcite.rel.RelNode, org.apache.calcite.util.ImmutableBitSet, org.apache.calcite.rex.RexNode) for the standard logical algebra.

Field Summary

Fields

Modifier and Type	Field and Description
static RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RelMdDistinctRowCount()

Method Summary

Modifier and Type	Method and Description
MetadataDef<BuiltInMetadata.DistinctRowCount>	getDef()
Double	getDistinctRowCount(Aggregate rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Exchange rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Filter rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Join rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Project rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(RelNode rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate) Catch-all implementation for BuiltInMetadata.DistinctRowCount.getDistinctRowCount(ImmutableBitSet, RexNode), invoked using reflection.
Double	getDistinctRowCount(RelSubset rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(SemiJoin rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Sort rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Union rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
Double	getDistinctRowCount(Values rel, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)

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

RelMdDistinctRowCount

protected RelMdDistinctRowCount()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.DistinctRowCount> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.DistinctRowCount>

getDistinctRowCount

public Double getDistinctRowCount(RelNode rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

Catch-all implementation for BuiltInMetadata.DistinctRowCount.getDistinctRowCount(ImmutableBitSet, RexNode), invoked using reflection.

See Also:

RelMetadataQuery.getDistinctRowCount(RelNode, ImmutableBitSet, RexNode)

getDistinctRowCount

public Double getDistinctRowCount(Union rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Sort rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Exchange rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Filter rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Join rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(SemiJoin rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Aggregate rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Values rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Project rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(RelSubset rel,
                                  RelMetadataQuery mq,
                                  ImmutableBitSet groupKey,
                                  RexNode predicate)