org.apache.calcite.rel

Class RelDistributions

java.lang.Object

org.apache.calcite.rel.RelDistributions

public class RelDistributions
extends Object

Utilities concerning RelDistribution.

Field Summary

Fields

Modifier and Type	Field and Description
static RelDistribution	ANY
static RelDistribution	BROADCAST_DISTRIBUTED The singleton broadcast distribution.
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.

Method Summary

Methods

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

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

Method Detail

hash

public static RelDistribution hash(Collection<? extends Number> numbers)

Creates a hash distribution.

range

public static RelDistribution range(Collection<? extends Number> numbers)

Creates a range distribution.