org.apache.flink.streaming.api.functions.windowing

类 ProcessWindowFunction.Context

java.lang.Object

org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction.Context

所有已实现的接口:

Serializable

直接已知子类:

InternalProcessApplyWindowContext, InternalProcessWindowContext

封闭类:

ProcessWindowFunction<IN,OUT,KEY,W extends Window>

public abstract class ProcessWindowFunction.Context
extends Object
implements Serializable

The context holding window metadata.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
Context()

方法概要

限定符和类型	方法和说明
abstract long	currentProcessingTime() Returns the current processing time.
abstract long	currentWatermark() Returns the current event-time watermark.
abstract org.apache.flink.api.common.state.KeyedStateStore	globalState() State accessor for per-key global state.
abstract <X> void	output(org.apache.flink.util.OutputTag<X> outputTag, X value) Emits a record to the side output identified by the OutputTag.
abstract W	window() Returns the window that is being evaluated.
abstract org.apache.flink.api.common.state.KeyedStateStore	windowState() State accessor for per-key and per-window state.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

Context

public Context()

方法详细资料

window

public abstract W window()

Returns the window that is being evaluated.

currentProcessingTime

public abstract long currentProcessingTime()

Returns the current processing time.

currentWatermark

public abstract long currentWatermark()

Returns the current event-time watermark.

windowState

public abstract org.apache.flink.api.common.state.KeyedStateStore windowState()

State accessor for per-key and per-window state.

NOTE:If you use per-window state you have to ensure that you clean it up by implementing ProcessWindowFunction.clear(Context).

globalState

public abstract org.apache.flink.api.common.state.KeyedStateStore globalState()

State accessor for per-key global state.

output

public abstract <X> void output(org.apache.flink.util.OutputTag<X> outputTag,
                                X value)

Emits a record to the side output identified by the OutputTag.

参数:

outputTag - the OutputTag that identifies the side output to emit to.

value - The record to emit.