org.apache.drill.exec.physical.impl.scan.v3.file

Interface ImplicitColumnMarker

All Known Implementing Classes:

ImplicitColumnMarker.FileImplicitMarker, ImplicitColumnMarker.InternalColumnMarker, ImplicitColumnMarker.PartitionColumnMarker

public interface ImplicitColumnMarker

Marks a column as implicit and provides a function to resolve an implicit column given a description of the input file.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ImplicitColumnMarker.FileImplicitMarker Marker for a file-based, non-internal implicit column that extracts parts of the file name as defined by the implicit column definition.
static class	ImplicitColumnMarker.InternalColumnMarker
static class	ImplicitColumnMarker.PartitionColumnMarker Partition column defined by a partition depth from the scan root folder.

Method Summary

Modifier and Type	Method and Description
String	resolve(FileDescrip fileInfo)

Method Detail

resolve

String resolve(FileDescrip fileInfo)