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

Handles the special "columns" column used by the text reader, and available to similar readers.

See: Description

Interface Summary

Interface	Description
ColumnsSchemaNegotiator	Schema negotiator that supports the file scan options plus access to the specific selected columns indexes.

Class Summary

Class	Description
ColumnsArrayManager	Handles the special case in which the entire row is returned as a "columns" array.
ColumnsArrayParser	Parses the `columns` array.
ColumnsScanFramework	Scan framework for a file that supports the special "columns" column.
ColumnsScanFramework.ColumnsScanBuilder
ColumnsScanFramework.ColumnsSchemaNegotiatorImpl	Implementation of the columns array schema negotiator.
ResolvedColumnsArrayColumn
UnresolvedColumnsArrayColumn

Package org.apache.drill.exec.physical.impl.scan.columns Description

Handles the special "columns" column used by the text reader, and available to similar readers.