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

Class ImplicitFileColumnsHandler

java.lang.Object

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

public class ImplicitFileColumnsHandler
extends Object

Manages implicit columns for files and partition columns for directories. Splits the work into a schema-time implicit column resolver, and a run-time class to populate the resulting vectors.

Uses system/session options for the configured name of the implicit columns.

Constructor Summary

Constructors

Constructor and Description
ImplicitFileColumnsHandler(DrillFileSystem dfs, OptionSet options, FileScanLifecycleBuilder scanOptions, ResultVectorCache vectorCache, ScanSchemaTracker schemaTracker)

Method Summary

Modifier and Type	Method and Description
StaticBatchBuilder	forFile(FileDescrip fileInfo)
boolean	isMetadataScan()
FileDescrip	makeDescrip(FileWork fileWork)

Methods inherited from class java.lang.Object

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

Constructor Detail

ImplicitFileColumnsHandler

public ImplicitFileColumnsHandler(DrillFileSystem dfs,
                                  OptionSet options,
                                  FileScanLifecycleBuilder scanOptions,
                                  ResultVectorCache vectorCache,
                                  ScanSchemaTracker schemaTracker)

Method Detail

makeDescrip

public FileDescrip makeDescrip(FileWork fileWork)

forFile

public StaticBatchBuilder forFile(FileDescrip fileInfo)

isMetadataScan

public boolean isMetadataScan()