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

Class FileMetadataColumnsParser

java.lang.Object

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

All Implemented Interfaces:

ScanLevelProjection.ScanProjectionParser

public class FileMetadataColumnsParser
extends Object
implements ScanLevelProjection.ScanProjectionParser

Parses the implicit file metadata columns out of a project list, and marks them for special handling by the file metadata manager.

Constructor Summary

Constructors

Constructor	Description
FileMetadataColumnsParser(ImplicitColumnManager metadataManager)

Method Summary

Modifier and Type	Method	Description
void	bind(ScanLevelProjection builder)
void	build()
boolean	hasImplicitCols()
boolean	parse(RequestedColumn inCol)
void	validate()
void	validateColumn(ColumnProjection outCol)

Methods inherited from class java.lang.Object

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

Constructor Details

FileMetadataColumnsParser

public FileMetadataColumnsParser(ImplicitColumnManager metadataManager)

Method Details

bind

public void bind(ScanLevelProjection builder)

Specified by:

bind in interface ScanLevelProjection.ScanProjectionParser

parse

public boolean parse(RequestedColumn inCol)

Specified by:

parse in interface ScanLevelProjection.ScanProjectionParser

validate

public void validate()

Specified by:

validate in interface ScanLevelProjection.ScanProjectionParser

validateColumn

public void validateColumn(ColumnProjection outCol)

Specified by:

validateColumn in interface ScanLevelProjection.ScanProjectionParser

build

public void build()

Specified by:

build in interface ScanLevelProjection.ScanProjectionParser

hasImplicitCols

public boolean hasImplicitCols()