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()
@Nullable Double	getSelectivity(Aggregate rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(Calc rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(Filter rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(Join rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(Project rel, RelMetadataQuery mq, @Nullable RexNode predicate)
Double	getSelectivity(RelNode rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(Sort rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(TableModify rel, RelMetadataQuery mq, @Nullable RexNode predicate)
@Nullable Double	getSelectivity(TableScan scan, RelMetadataQuery mq, RexNode predicate)
@Nullable Double	getSelectivity(Union rel, RelMetadataQuery mq, @Nullable RexNode predicate)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.metadata.MetadataHandler

handlerMethods

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 @Nullable Double getSelectivity(TableScan scan,
                                       RelMetadataQuery mq,
                                       RexNode predicate)

getSelectivity

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

getSelectivity

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

getSelectivity

public @Nullable Double getSelectivity(TableModify rel,
                                       RelMetadataQuery mq,
                                       @Nullable RexNode predicate)

getSelectivity

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

getSelectivity

public @Nullable Double getSelectivity(Calc rel,
                                       RelMetadataQuery mq,
                                       @Nullable RexNode predicate)

getSelectivity

public @Nullable Double getSelectivity(Join rel,
                                       RelMetadataQuery mq,
                                       @Nullable RexNode predicate)

getSelectivity

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

getSelectivity

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

getSelectivity

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