org.apache.flink.table.planner.plan.nodes.exec

枚举 InputProperty.DistributionType

java.lang.Object

java.lang.Enum<InputProperty.DistributionType>

org.apache.flink.table.planner.plan.nodes.exec.InputProperty.DistributionType

所有已实现的接口:

Serializable, Comparable<InputProperty.DistributionType>

封闭类:

InputProperty

public static enum InputProperty.DistributionType
extends Enum<InputProperty.DistributionType>

Enumeration which describes the type of the input data distribution.

枚举常量概要

枚举常量

枚举常量和说明
ANY The input will accept any data distribution.
BROADCAST The input will read all records for each parallelism of the target node.
HASH The input will read the records whose keys hash to a particular hash value.
KEEP_INPUT_AS_IS A special distribution type which indicators the data distribution is the same as its input.
SINGLETON The input will read all records, and the parallelism of the target node must be 1.
UNKNOWN Unknown distribution type, will be filled out in the future.

方法概要

限定符和类型	方法和说明
static InputProperty.DistributionType	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static InputProperty.DistributionType[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

ANY

public static final InputProperty.DistributionType ANY

The input will accept any data distribution.

HASH

public static final InputProperty.DistributionType HASH

The input will read the records whose keys hash to a particular hash value. A given record appears on exactly one parallelism.

BROADCAST

public static final InputProperty.DistributionType BROADCAST

The input will read all records for each parallelism of the target node. All records appear in each parallelism.

SINGLETON

public static final InputProperty.DistributionType SINGLETON

The input will read all records, and the parallelism of the target node must be 1.

KEEP_INPUT_AS_IS

public static final InputProperty.DistributionType KEEP_INPUT_AS_IS

A special distribution type which indicators the data distribution is the same as its input.

UNKNOWN

public static final InputProperty.DistributionType UNKNOWN

Unknown distribution type, will be filled out in the future.

方法详细资料

values

public static InputProperty.DistributionType[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (InputProperty.DistributionType c : InputProperty.DistributionType.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static InputProperty.DistributionType valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值