EmptyComponents.EmptyTransform (Nemo Project 0.4 API)

java.lang.Object
- org.apache.nemo.common.ir.vertex.transform.NoWatermarkEmitTransform<I,O>
- - org.apache.nemo.common.test.EmptyComponents.EmptyTransform<I,O>

Type Parameters:

I - input type.

O - output type.

All Implemented Interfaces:

java.io.Serializable, Transform<I,O>

Enclosing class:

EmptyComponents
```
public static class EmptyComponents.EmptyTransform<I,O>
extends NoWatermarkEmitTransform<I,O>
```
An empty transform.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.nemo.common.ir.vertex.transform.Transform
  Transform.Context

Constructor Summary

Constructors
Constructor Description

EmptyTransform(java.lang.String name)
Default constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Close the transform.
`void`	`onData(I element)`	On data received.
`void`	`prepare(Transform.Context context, OutputCollector<O> outputCollector)`	Prepare the transform.
`java.lang.String`	`toString()`

Methods inherited from class org.apache.nemo.common.ir.vertex.transform.NoWatermarkEmitTransform
onLatencymark, onWatermark

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

- Constructor Detail
  - EmptyTransform
```
public EmptyTransform(java.lang.String name)
```
    Default constructor.
    
    Parameters:
    
    name - name of the empty transform.
- Method Detail
  - toString
```
public final java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - prepare
```
public void prepare(Transform.Context context,
                    OutputCollector<O> outputCollector)
```
    Description copied from interface: Transform
    
    Prepare the transform.
    
    Parameters:
    
    context - of the transform.
    
    outputCollector - that collects outputs.
  - onData
```
public void onData(I element)
```
    Description copied from interface: Transform
    
    On data received.
    
    Parameters:
    
    element - data received.
  - close
```
public void close()
```
    Description copied from interface: Transform
    
    Close the transform.