IN
- The type of the input value.OUT
- The type of the output value.W
- The type of Window
that this window function can be applied on.@PublicEvolving
public abstract class ProcessAllWindowFunction<IN,OUT,W extends Window>
extends org.apache.flink.api.common.functions.AbstractRichFunction
限定符和类型 | 类和说明 |
---|---|
class |
ProcessAllWindowFunction.Context
The context holding window metadata.
|
构造器和说明 |
---|
ProcessAllWindowFunction() |
限定符和类型 | 方法和说明 |
---|---|
void |
clear(ProcessAllWindowFunction.Context context)
Deletes any state in the
Context when the Window is purged. |
abstract void |
process(ProcessAllWindowFunction.Context context,
Iterable<IN> elements,
org.apache.flink.util.Collector<OUT> out)
Evaluates the window and outputs none or several elements.
|
public abstract void process(ProcessAllWindowFunction.Context context, Iterable<IN> elements, org.apache.flink.util.Collector<OUT> out) throws Exception
context
- The context in which the window is being evaluated.elements
- The elements in the window being evaluated.out
- A collector for emitting elements.Exception
- The function may throw exceptions to fail the program and trigger recovery.public void clear(ProcessAllWindowFunction.Context context) throws Exception
Context
when the Window is purged.context
- The context to which the window is being evaluatedException
- The function may throw exceptions to fail the program and trigger recovery.Copyright © 2014–2019 The Apache Software Foundation. All rights reserved.