org.apache.calcite.rel.metadata

Interface BuiltInMetadata.Selectivity.Handler

All Superinterfaces:

MetadataHandler<BuiltInMetadata.Selectivity>

Enclosing interface:

BuiltInMetadata.Selectivity

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.Selectivity.Handler
extends MetadataHandler<BuiltInMetadata.Selectivity>

Handler API.

Method Summary

Modifier and Type	Method and Description
default MetadataDef<BuiltInMetadata.Selectivity>	getDef()
@Nullable Double	getSelectivity(RelNode r, RelMetadataQuery mq, @Nullable RexNode predicate)

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

handlerMethods

Method Detail

getSelectivity

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

getDef

default MetadataDef<BuiltInMetadata.Selectivity> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.Selectivity>