io.cdap.wrangler.api

Interface RecipePipeline<I,O,E>

Type Parameters:

I - type of input object

O - type of output object

E - type of error object

All Superinterfaces:

Serializable

@PublicEvolving
public interface RecipePipeline<I,O,E>
extends Serializable

RecipePipeline executes array of Executor in the order they are specified.

Method Summary

Modifier and Type	Method and Description
void	destroy() Destroys the pipeline.
List<E>	errors() Returns records that are errored out.
List<I>	execute(List<I> input) Executes the pipeline on the input.
List<O>	execute(List<I> input, io.cdap.cdap.api.data.schema.Schema schema) Executes the pipeline on the input.
void	initialize(RecipeParser directives, ExecutorContext context) Initializes the wrangle pipeline using the directives.

Method Detail

initialize

void initialize(RecipeParser directives,
                ExecutorContext context)
         throws RecipeException

Initializes the wrangle pipeline using the directives.

Parameters:

directives - Wrangle directives.

context -

Throws:

RecipeException

execute

List<O> execute(List<I> input,
                io.cdap.cdap.api.data.schema.Schema schema)
         throws RecipeException

Executes the pipeline on the input.

Parameters:

input - List of Input record of type I.

schema - Schema to which the output should be mapped.

Returns:

Parsed output list of record of type O

Throws:

RecipeException

execute

List<I> execute(List<I> input)
         throws RecipeException

Executes the pipeline on the input.

Parameters:

input - List of input record of type I.

Returns:

Parsed output list of record of type I

Throws:

RecipeException

errors

List<E> errors()

Returns records that are errored out.

Returns:

records that have errored out.

destroy

void destroy()

Destroys the pipeline.