io.cdap.cdap.etl.api

Interface MultiInputStageConfigurer

@Beta
public interface MultiInputStageConfigurer

This stores the input schemas that are passed to this stage from other stages in the pipeline and the output schema that could be sent to the next stages from this stage.

Method Summary

Modifier and Type	Method and Description
default FailureCollector	getFailureCollector() Returns a failure collector for the stage.
Map<String,io.cdap.cdap.api.data.schema.Schema>	getInputSchemas() get the map of input stageName to input schema for this stage, or return empty map if its unknown
List<String>	getInputStages() get a list of input stage names.
void	setOutputSchema(io.cdap.cdap.api.data.schema.Schema outputSchema) set output schema for this stage, or null if its unknown

Method Detail

getInputSchemas

Map<String,io.cdap.cdap.api.data.schema.Schema> getInputSchemas()

get the map of input stageName to input schema for this stage, or return empty map if its unknown

Returns:

map of input schemas

getInputStages

List<String> getInputStages()

get a list of input stage names.

Returns:

list of input stage names

setOutputSchema

void setOutputSchema(@Nullable
                     io.cdap.cdap.api.data.schema.Schema outputSchema)

set output schema for this stage, or null if its unknown

Parameters:

outputSchema - output schema for this stage

getFailureCollector

default FailureCollector getFailureCollector()

Returns a failure collector for the stage.

Returns:

a failure collector

Throws:

UnsupportedOperationException - if the implementation does not override this method