Package org.apache.calcite.rel.metadata

Interface BuiltInMetadata.InputFieldsUsed

All Superinterfaces:

Metadata

Enclosing class:

BuiltInMetadata

public static interface BuiltInMetadata.InputFieldsUsed
extends Metadata

Metadata that identifies which columns of its inputs are referenced by a relational expression.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	BuiltInMetadata.InputFieldsUsed.Handler	Handler API.

Field Summary

Fields

Modifier and Type	Field	Description
static final MetadataDef<BuiltInMetadata.InputFieldsUsed>	DEF

Method Summary

Modifier and Type	Method	Description
ImmutableBitSet	getInputFieldsUsed()	Returns which columns of its inputs are referenced by this relational expression.

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

rel

Field Details

DEF

static final MetadataDef<BuiltInMetadata.InputFieldsUsed> DEF

Method Details

getInputFieldsUsed

ImmutableBitSet getInputFieldsUsed()

Returns which columns of its inputs are referenced by this relational expression.

Returns:

an ImmutableBitSet where bits correspond to input column ordinals from the first input to the last