co.cask.hydrator.plugin

Class ValueMapper

java.lang.Object

co.cask.cdap.etl.api.Transform<co.cask.cdap.api.data.format.StructuredRecord,co.cask.cdap.api.data.format.StructuredRecord>

co.cask.hydrator.plugin.ValueMapper

All Implemented Interfaces:

co.cask.cdap.etl.api.Destroyable, co.cask.cdap.etl.api.PipelineConfigurable, co.cask.cdap.etl.api.StageLifecycle<co.cask.cdap.etl.api.TransformContext>, co.cask.cdap.etl.api.Transformation<co.cask.cdap.api.data.format.StructuredRecord,co.cask.cdap.api.data.format.StructuredRecord>

public class ValueMapper
extends co.cask.cdap.etl.api.Transform<co.cask.cdap.api.data.format.StructuredRecord,co.cask.cdap.api.data.format.StructuredRecord>

Transforms records using custom mapping provided by the config.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ValueMapper.Config Configuration for the ValueMapper transform.
static class	ValueMapper.ValueMapping Object used to keep input mapping corresponding to each source field

Field Summary

Fields inherited from class co.cask.cdap.etl.api.Transform

PLUGIN_TYPE

Constructor Summary

Constructors

Constructor and Description
ValueMapper(ValueMapper.Config config)

Method Summary

Methods

Modifier and Type	Method and Description
void	configurePipeline(co.cask.cdap.etl.api.PipelineConfigurer pipelineConfigurer)
void	initialize(co.cask.cdap.etl.api.TransformContext context)
void	transform(co.cask.cdap.api.data.format.StructuredRecord input, co.cask.cdap.etl.api.Emitter<co.cask.cdap.api.data.format.StructuredRecord> emitter)

Methods inherited from class co.cask.cdap.etl.api.Transform

destroy, getContext

Methods inherited from class java.lang.Object

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

Constructor Detail

ValueMapper

public ValueMapper(ValueMapper.Config config)

Method Detail

transform

public void transform(co.cask.cdap.api.data.format.StructuredRecord input,
             co.cask.cdap.etl.api.Emitter<co.cask.cdap.api.data.format.StructuredRecord> emitter)
               throws Exception

Throws:

Exception

initialize

public void initialize(co.cask.cdap.etl.api.TransformContext context)
                throws Exception

Specified by:

initialize in interface co.cask.cdap.etl.api.StageLifecycle<co.cask.cdap.etl.api.TransformContext>

Overrides:

initialize in class co.cask.cdap.etl.api.Transform<co.cask.cdap.api.data.format.StructuredRecord,co.cask.cdap.api.data.format.StructuredRecord>

Throws:

Exception

configurePipeline

public void configurePipeline(co.cask.cdap.etl.api.PipelineConfigurer pipelineConfigurer)
                       throws IllegalArgumentException

Specified by:

configurePipeline in interface co.cask.cdap.etl.api.PipelineConfigurable

Overrides:

configurePipeline in class co.cask.cdap.etl.api.Transform<co.cask.cdap.api.data.format.StructuredRecord,co.cask.cdap.api.data.format.StructuredRecord>

Parameters:

pipelineConfigurer -

Throws:

IllegalArgumentException - when source field is other than String type