Package org.apache.calcite.rel.metadata

Interface BuiltInMetadata.UniqueKeys.Handler

All Superinterfaces:

MetadataHandler<BuiltInMetadata.UniqueKeys>

Enclosing interface:

BuiltInMetadata.UniqueKeys

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.UniqueKeys.Handler
extends MetadataHandler<BuiltInMetadata.UniqueKeys>

Handler API.

Method Summary

Modifier and Type	Method	Description
default MetadataDef<BuiltInMetadata.UniqueKeys>	getDef()
@Nullable Set<ImmutableBitSet>	getUniqueKeys(RelNode r, RelMetadataQuery mq, boolean ignoreNulls)

Method Details

getUniqueKeys

@Nullable Set<ImmutableBitSet> getUniqueKeys(RelNode r,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getDef

default MetadataDef<BuiltInMetadata.UniqueKeys> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.UniqueKeys>