KeyedProcessFunction.Context (Flink : Runtime 2.1.0 API)

java.lang.Object
- org.apache.flink.streaming.api.functions.KeyedProcessFunction.Context

Direct Known Subclasses:

KeyedProcessFunction.OnTimerContext

Enclosing class:

KeyedProcessFunction<K,I,O>
```
public abstract class KeyedProcessFunction.Context
extends Object
```
Information available in an invocation of #processElement(Object, Context, Collector) or #onTimer(long, OnTimerContext, Collector).

Constructor Summary

Constructors
Constructor Description

Context()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract K`	`getCurrentKey()`	Get key of the element being processed.
`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 TimerService`	`timerService()`	A `TimerService` for querying time and registering timers.
`abstract Long`	`timestamp()`	Timestamp of the element currently being processed or timestamp of a firing timer.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Context
```
public Context()
```
- Method Detail
  - timestamp
```
public abstract Long timestamp()
```
    Timestamp of the element currently being processed or timestamp of a firing timer.
    This might be null, depending on the stream's watermark strategy.
  - timerService
```
public abstract TimerService timerService()
```
    A TimerService for querying time and registering timers.
  - 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.
    
    Parameters:
    
    outputTag - the OutputTag that identifies the side output to emit to.
    
    value - The record to emit.
  - getCurrentKey
```
public abstract K getCurrentKey()
```
    Get key of the element being processed.