co.cask.cdap.etl.api

Interface Transformation<IN,OUT>

Type Parameters:

IN - Type of input object

OUT - Type of output object

All Known Implementing Classes:

BatchSink, BatchSource, Transform

@Beta
public interface Transformation<IN,OUT>

Transforms an input object into zero or more output objects.

Method Summary

Methods

Modifier and Type	Method and Description
void	transform(IN input, Emitter<OUT> emitter) Transform the input and emit output using Emitter.

Method Detail

transform

void transform(IN input,
             Emitter<OUT> emitter)
               throws Exception

Transform the input and emit output using Emitter.

Parameters:

input - input data to be transformed

emitter - Emitter to emit data to the next stage

Throws:

Exception - if there's an error during this method invocation