org.apache.calcite.rel.metadata

Class RelMdParallelism

java.lang.Object

org.apache.calcite.rel.metadata.RelMdParallelism

public class RelMdParallelism
extends Object

Default implementations of the BuiltInMetadata.Parallelism metadata provider for the standard logical algebra.

See Also:

RelMetadataQuery.isPhaseTransition(org.apache.calcite.rel.RelNode), RelMetadataQuery.splitCount(org.apache.calcite.rel.RelNode)

Field Summary

Fields

Modifier and Type	Field and Description
static RelMetadataProvider	SOURCE Source for BuiltInMetadata.Parallelism.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RelMdParallelism()

Method Summary

Methods

Modifier and Type	Method and Description
Boolean	isPhaseTransition(Exchange rel)
Boolean	isPhaseTransition(RelNode rel) Catch-all implementation for BuiltInMetadata.Parallelism.isPhaseTransition(), invoked using reflection.
Boolean	isPhaseTransition(TableScan rel)
Boolean	isPhaseTransition(Values rel)
Integer	splitCount(RelNode rel) Catch-all implementation for BuiltInMetadata.Parallelism.splitCount(), invoked using reflection.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SOURCE

public static final RelMetadataProvider SOURCE

Source for BuiltInMetadata.Parallelism.

Constructor Detail

RelMdParallelism

protected RelMdParallelism()

Method Detail

isPhaseTransition

public Boolean isPhaseTransition(RelNode rel)

Catch-all implementation for BuiltInMetadata.Parallelism.isPhaseTransition(), invoked using reflection.

See Also:

RelMetadataQuery.isPhaseTransition(org.apache.calcite.rel.RelNode)

isPhaseTransition

public Boolean isPhaseTransition(TableScan rel)

isPhaseTransition

public Boolean isPhaseTransition(Values rel)

isPhaseTransition

public Boolean isPhaseTransition(Exchange rel)

splitCount

public Integer splitCount(RelNode rel)

Catch-all implementation for BuiltInMetadata.Parallelism.splitCount(), invoked using reflection.

See Also:

RelMetadataQuery.splitCount(org.apache.calcite.rel.RelNode)