org.apache.flink.streaming.runtime.io

枚举 DataInputStatus

java.lang.Object

java.lang.Enum<DataInputStatus>

org.apache.flink.streaming.runtime.io.DataInputStatus

所有已实现的接口:

Serializable, Comparable<DataInputStatus>

@Internal
public enum DataInputStatus
extends Enum<DataInputStatus>

It is an internal equivalent of InputStatus that provides additional non public statuses.

An InputStatus indicates the availability of data from an asynchronous input. When asking an asynchronous input to produce data, it returns this status to indicate how to proceed.

枚举常量概要

枚举常量

枚举常量和说明
END_OF_DATA Indicator that the input has reached the end of data.
END_OF_INPUT Indicator that the input has reached the end of data and control events.
END_OF_RECOVERY Indicator that all persisted data of the data exchange has been successfully restored.
MORE_AVAILABLE Indicator that more data is available and the input can be called immediately again to produce more data.
NOTHING_AVAILABLE Indicator that no data is currently available, but more data will be available in the future again.

方法概要

限定符和类型	方法和说明
static DataInputStatus	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static DataInputStatus[]	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

MORE_AVAILABLE

public static final DataInputStatus MORE_AVAILABLE

Indicator that more data is available and the input can be called immediately again to produce more data.

NOTHING_AVAILABLE

public static final DataInputStatus NOTHING_AVAILABLE

Indicator that no data is currently available, but more data will be available in the future again.

END_OF_RECOVERY

public static final DataInputStatus END_OF_RECOVERY

Indicator that all persisted data of the data exchange has been successfully restored.

END_OF_DATA

public static final DataInputStatus END_OF_DATA

Indicator that the input has reached the end of data.

END_OF_INPUT

public static final DataInputStatus END_OF_INPUT

Indicator that the input has reached the end of data and control events. The input is about to close.

方法详细资料

values

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