org.apache.flink.connector.base

枚举 DeliveryGuarantee

java.lang.Object

java.lang.Enum<DeliveryGuarantee>

org.apache.flink.connector.base.DeliveryGuarantee

所有已实现的接口:

Serializable, Comparable<DeliveryGuarantee>, org.apache.flink.configuration.DescribedEnum

@PublicEvolving
public enum DeliveryGuarantee
extends Enum<DeliveryGuarantee>
implements org.apache.flink.configuration.DescribedEnum

DeliverGuarantees that can be chosen. In general your pipeline can only offer the lowest delivery guarantee which is supported by your sources and sinks.

枚举常量概要

枚举常量

枚举常量和说明
AT_LEAST_ONCE Records are ensured to be delivered but it may happen that the same record is delivered multiple times.
EXACTLY_ONCE Records are only delivered exactly-once also under failover scenarios.
NONE Records are delivered on a best effort basis.

方法概要

限定符和类型	方法和说明
org.apache.flink.configuration.description.InlineElement	getDescription()
String	toString()
static DeliveryGuarantee	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static DeliveryGuarantee[]	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, 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

EXACTLY_ONCE

public static final DeliveryGuarantee EXACTLY_ONCE

Records are only delivered exactly-once also under failover scenarios. To build a complete exactly-once pipeline is required that the source and sink support exactly-once and are properly configured.

AT_LEAST_ONCE

public static final DeliveryGuarantee AT_LEAST_ONCE

Records are ensured to be delivered but it may happen that the same record is delivered multiple times. Usually, this guarantee is faster than the exactly-once delivery.

NONE

public static final DeliveryGuarantee NONE

Records are delivered on a best effort basis. It is often the fastest way to process records but it may happen that records are lost or duplicated.

方法详细资料

values

public static DeliveryGuarantee[] 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 (DeliveryGuarantee c : DeliveryGuarantee.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 DeliveryGuarantee 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

getDescription

public org.apache.flink.configuration.description.InlineElement getDescription()

指定者:

getDescription 在接口中 org.apache.flink.configuration.DescribedEnum

toString

public String toString()

覆盖:

toString 在类中 Enum<DeliveryGuarantee>