org.apache.drill.exec.store.dfs

Interface FormatLocationTransformer

All Known Implementing Classes:

IcebergFormatLocationTransformer

public interface FormatLocationTransformer

Provides the ability to transform format location before creating FileSelection if required.

For example, a specified location can have some metadata info, so location transformer implementation may extract this metadata info, and create FileSelection with the actual location.

Method Summary

Modifier and Type	Method and Description
boolean	canTransform(String location) Checks whether specified location can be transformed.
FileSelection	transform(String location, Function<String,FileSelection> selectionFactory) Transforms specified location and returns FileSelection instance with updated location.

Method Detail

canTransform

boolean canTransform(String location)

Checks whether specified location can be transformed.

Parameters:

location - location to check

Returns:

true if specified location can be transformed, false otherwise

transform

FileSelection transform(String location,
                        Function<String,FileSelection> selectionFactory)

Transforms specified location and returns FileSelection instance with updated location.

Parameters:

location - location to transform

selectionFactory - file selection factory

Returns:

FileSelection instance with updated location