Package org.apache.calcite.rel

Class RelDistributions

java.lang.Object

org.apache.calcite.rel.RelDistributions

public class RelDistributions
extends java.lang.Object

Utilities concerning RelDistribution.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	RelDistributions.RelDistributionImpl	Implementation of RelDistribution.

Field Summary

Fields

Modifier and Type	Field	Description
static RelDistribution	ANY
static RelDistribution	BROADCAST_DISTRIBUTED	The singleton broadcast distribution.
private static ImmutableIntList	EMPTY
static RelDistribution	RANDOM_DISTRIBUTED	The singleton random distribution.
static RelDistribution	ROUND_ROBIN_DISTRIBUTED	The singleton round-robin distribution.
static RelDistribution	SINGLETON	The singleton singleton distribution.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RelDistributions()

Method Summary

Modifier and Type	Method	Description
static RelDistribution	hash(java.util.Collection<? extends java.lang.Number> numbers)	Creates a hash distribution.
static RelDistribution	range(java.util.Collection<? extends java.lang.Number> numbers)	Creates a range distribution.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

private static final ImmutableIntList EMPTY

SINGLETON

public static final RelDistribution SINGLETON

The singleton singleton distribution.

RANDOM_DISTRIBUTED

public static final RelDistribution RANDOM_DISTRIBUTED

The singleton random distribution.

ROUND_ROBIN_DISTRIBUTED

public static final RelDistribution ROUND_ROBIN_DISTRIBUTED

The singleton round-robin distribution.

BROADCAST_DISTRIBUTED

public static final RelDistribution BROADCAST_DISTRIBUTED

The singleton broadcast distribution.

ANY

public static final RelDistribution ANY

Constructor Detail

RelDistributions

private RelDistributions()

Method Detail

hash

public static RelDistribution hash(java.util.Collection<? extends java.lang.Number> numbers)

Creates a hash distribution.

range

public static RelDistribution range(java.util.Collection<? extends java.lang.Number> numbers)

Creates a range distribution.