co.cask.cdap.etl.api

Class Transform<IN,OUT>

java.lang.Object

co.cask.cdap.etl.api.Transform<IN,OUT>

Type Parameters:

IN - Type of input object

OUT - Type of output object

All Implemented Interfaces:

Destroyable, PipelineConfigurable, StageLifecycle<TransformContext>, Transformation<IN,OUT>

@Beta
public abstract class Transform<IN,OUT>
extends Object
implements StageLifecycle<TransformContext>, Transformation<IN,OUT>, PipelineConfigurable

Transform Stage.

Field Summary

Fields

Modifier and Type	Field and Description
static String	PLUGIN_TYPE

Constructor Summary

Constructors

Constructor and Description
Transform()

Method Summary

Methods

Modifier and Type	Method and Description
void	configurePipeline(PipelineConfigurer pipelineConfigurer) Configure an ETL pipeline.
void	destroy() Destroy the Transform Stage.
protected TransformContext	getContext()
void	initialize(TransformContext context) Initialize the Transform Stage.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface co.cask.cdap.etl.api.Transformation

transform

Field Detail

PLUGIN_TYPE

public static final String PLUGIN_TYPE

See Also:

Constant Field Values

Constructor Detail

Transform

public Transform()

Method Detail

initialize

public void initialize(TransformContext context)
                throws Exception

Initialize the Transform Stage.

Specified by:

initialize in interface StageLifecycle<TransformContext>

Parameters:

context - TransformContext

Throws:

Exception - if there is any error during initialization

configurePipeline

public void configurePipeline(PipelineConfigurer pipelineConfigurer)
                       throws IllegalArgumentException

Configure an ETL pipeline.

Specified by:

configurePipeline in interface PipelineConfigurable

Parameters:

pipelineConfigurer - the configurer used to add required datasets and streams

Throws:

IllegalArgumentException - if the given config is invalid

destroy

public void destroy()

Destroy the Transform Stage.

Specified by:

destroy in interface Destroyable

getContext

protected TransformContext getContext()