SingleInputWatermarkManager (Nemo Project 0.4 API)

java.lang.Object
- org.apache.nemo.runtime.executor.datatransfer.SingleInputWatermarkManager

All Implemented Interfaces:

InputWatermarkManager
```
public final class SingleInputWatermarkManager
extends java.lang.Object
implements InputWatermarkManager
```
This is a special implementation for single input data stream for optimization.

Constructor Summary

Constructors
Constructor Description

SingleInputWatermarkManager(OutputCollector watermarkCollector)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`trackAndEmitWatermarks(int edgeIndex, Watermark watermark)`	This just forwards watermarks to the next operator because it has one data stream.

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

- Constructor Detail
  - SingleInputWatermarkManager
```
public SingleInputWatermarkManager(OutputCollector watermarkCollector)
```
- Method Detail
  - trackAndEmitWatermarks
```
public void trackAndEmitWatermarks(int edgeIndex,
                                   Watermark watermark)
```
    This just forwards watermarks to the next operator because it has one data stream.
    
    Specified by:
    
    trackAndEmitWatermarks in interface InputWatermarkManager
    
    Parameters:
    
    edgeIndex - edge index
    
    watermark - watermark