org.apache.calcite.rel.metadata

Class RelMdSelectivity

java.lang.Object

org.apache.calcite.rel.metadata.RelMdSelectivity

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.Selectivity>

public class RelMdSelectivity
extends Object
implements MetadataHandler<BuiltInMetadata.Selectivity>

RelMdSelectivity supplies a default implementation of RelMetadataQuery.getSelectivity(org.apache.calcite.rel.RelNode, 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	RelMdSelectivity()

Method Summary

Modifier and Type	Method and Description
MetadataDef<BuiltInMetadata.Selectivity>	getDef()
Double	getSelectivity(Aggregate rel, RelMetadataQuery mq, RexNode predicate)
Double	getSelectivity(Filter rel, RelMetadataQuery mq, RexNode predicate)
Double	getSelectivity(Project rel, RelMetadataQuery mq, RexNode predicate)
Double	getSelectivity(RelNode rel, RelMetadataQuery mq, RexNode predicate)
Double	getSelectivity(SemiJoin rel, RelMetadataQuery mq, RexNode predicate)
Double	getSelectivity(Sort rel, RelMetadataQuery mq, RexNode predicate)
Double	getSelectivity(Union rel, RelMetadataQuery mq, 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

RelMdSelectivity

protected RelMdSelectivity()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.Selectivity> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.Selectivity>

getSelectivity

public Double getSelectivity(Union rel,
                             RelMetadataQuery mq,
                             RexNode predicate)

getSelectivity

public Double getSelectivity(Sort rel,
                             RelMetadataQuery mq,
                             RexNode predicate)

getSelectivity

public Double getSelectivity(Filter rel,
                             RelMetadataQuery mq,
                             RexNode predicate)

getSelectivity

public Double getSelectivity(SemiJoin rel,
                             RelMetadataQuery mq,
                             RexNode predicate)

getSelectivity

public Double getSelectivity(Aggregate rel,
                             RelMetadataQuery mq,
                             RexNode predicate)

getSelectivity

public Double getSelectivity(Project rel,
                             RelMetadataQuery mq,
                             RexNode predicate)

getSelectivity

public Double getSelectivity(RelNode rel,
                             RelMetadataQuery mq,
                             RexNode predicate)