org.apache.gravitino.rel.expressions.distributions

Class Distributions.DistributionImpl

java.lang.Object

org.apache.gravitino.rel.expressions.distributions.Distributions.DistributionImpl

All Implemented Interfaces:

Distribution, Expression

Enclosing class:

Distributions

public static final class Distributions.DistributionImpl
extends java.lang.Object
implements Distribution

Create a distribution on columns. Like distribute by (a) or (a, b), for complex like distributing by (func(a), b) or (func(a), func(b)), please use Distributions.DistributionImpl.Builder

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Distributions.DistributionImpl.Builder Builder to create a distribution.

Field Summary

Fields inherited from interface org.apache.gravitino.rel.expressions.Expression

EMPTY_EXPRESSION, EMPTY_NAMED_REFERENCE

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
Expression[]	expressions() Get the expressions of the distribution.
int	hashCode()
int	number() Get the number of buckets of the distribution.
Strategy	strategy() Get the strategy of the distribution.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.gravitino.rel.expressions.distributions.Distribution

children, equals

Methods inherited from interface org.apache.gravitino.rel.expressions.Expression

references

Method Detail

strategy

public Strategy strategy()

Get the strategy of the distribution.

Specified by:

strategy in interface Distribution

Returns:

The strategy of the distribution.

number

public int number()

Get the number of buckets of the distribution.

Specified by:

number in interface Distribution

Returns:

The number of buckets of the distribution.

expressions

public Expression[] expressions()

Get the expressions of the distribution.

Specified by:

expressions in interface Distribution

Returns:

The expressions of the distribution.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object