WindowOperator.WindowContext (Flink : Runtime 2.0-preview1 API)

java.lang.Object
- org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.WindowContext

All Implemented Interfaces:

Serializable, InternalWindowFunction.InternalWindowContext

Enclosing class:

WindowOperator<K,IN,ACC,OUT,W extends Window>
```
public class WindowOperator.WindowContext
extends Object
implements InternalWindowFunction.InternalWindowContext
```
A utility class for handling ProcessWindowFunction invocations. This can be reused by setting the key and window fields. No internal state must be kept in the WindowContext.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

protected W window

protected WindowOperator.AbstractPerWindowStateStore windowState

Constructor Summary

Constructors
Constructor Description

WindowContext(W window)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`
`long`	`currentProcessingTime()`
`long`	`currentWatermark()`
`org.apache.flink.api.common.state.KeyedStateStore`	`globalState()`
`<X> void`	`output(org.apache.flink.util.OutputTag<X> outputTag, X value)`
`String`	`toString()`
`org.apache.flink.api.common.state.KeyedStateStore`	`windowState()`

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

- Field Detail
  - window
```
protected W extends Window window
```
  - windowState
```
protected WindowOperator.AbstractPerWindowStateStore windowState
```
- Constructor Detail
  - WindowContext
```
public WindowContext(W window)
```
- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - clear
```
public void clear()
           throws Exception
```
    Throws:
    
    Exception
  - currentProcessingTime
```
public long currentProcessingTime()
```
    Specified by:
    
    currentProcessingTime in interface InternalWindowFunction.InternalWindowContext
  - currentWatermark
```
public long currentWatermark()
```
    Specified by:
    
    currentWatermark in interface InternalWindowFunction.InternalWindowContext
  - windowState
```
public org.apache.flink.api.common.state.KeyedStateStore windowState()
```
    Specified by:
    
    windowState in interface InternalWindowFunction.InternalWindowContext
  - globalState
```
public org.apache.flink.api.common.state.KeyedStateStore globalState()
```
    Specified by:
    
    globalState in interface InternalWindowFunction.InternalWindowContext
  - output
```
public <X> void output(org.apache.flink.util.OutputTag<X> outputTag,
                       X value)
```
    Specified by:
    
    output in interface InternalWindowFunction.InternalWindowContext