org.apache.calcite.rel.metadata

Interface BuiltInMetadata.ColumnUniqueness.Handler

All Superinterfaces:

MetadataHandler<BuiltInMetadata.ColumnUniqueness>

Enclosing interface:

BuiltInMetadata.ColumnUniqueness

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.ColumnUniqueness.Handler
extends MetadataHandler<BuiltInMetadata.ColumnUniqueness>

Handler API.

Method Summary

Modifier and Type	Method and Description
Boolean	areColumnsUnique(RelNode r, RelMetadataQuery mq, ImmutableBitSet columns, boolean ignoreNulls)
default MetadataDef<BuiltInMetadata.ColumnUniqueness>	getDef()

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

handlerMethods

Method Detail

areColumnsUnique

Boolean areColumnsUnique(RelNode r,
                         RelMetadataQuery mq,
                         ImmutableBitSet columns,
                         boolean ignoreNulls)

getDef

default MetadataDef<BuiltInMetadata.ColumnUniqueness> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.ColumnUniqueness>