org.apache.calcite.rel.metadata

Interface BuiltInMetadata.RowCount.Handler

All Superinterfaces:

MetadataHandler<BuiltInMetadata.RowCount>

Enclosing interface:

BuiltInMetadata.RowCount

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.RowCount.Handler
extends MetadataHandler<BuiltInMetadata.RowCount>

Handler API.

Method Summary

Modifier and Type	Method and Description
default MetadataDef<BuiltInMetadata.RowCount>	getDef()
@Nullable Double	getRowCount(RelNode r, RelMetadataQuery mq)

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

handlerMethods

Method Detail

getRowCount

@Nullable Double getRowCount(RelNode r,
                             RelMetadataQuery mq)

getDef

default MetadataDef<BuiltInMetadata.RowCount> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.RowCount>