org.apache.calcite.rel.metadata

Interface BuiltInMetadata.PopulationSize.Handler

All Superinterfaces:

MetadataHandler<BuiltInMetadata.PopulationSize>

Enclosing interface:

BuiltInMetadata.PopulationSize

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface BuiltInMetadata.PopulationSize.Handler
extends MetadataHandler<BuiltInMetadata.PopulationSize>

Handler API.

Method Summary

Modifier and Type	Method and Description
default MetadataDef<BuiltInMetadata.PopulationSize>	getDef()
@Nullable Double	getPopulationSize(RelNode r, RelMetadataQuery mq, ImmutableBitSet groupKey)

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

handlerMethods

Method Detail

getPopulationSize

@Nullable Double getPopulationSize(RelNode r,
                                   RelMetadataQuery mq,
                                   ImmutableBitSet groupKey)

getDef

default MetadataDef<BuiltInMetadata.PopulationSize> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.PopulationSize>