Uses of Interface
org.apache.drill.exec.physical.impl.scan.project.ConstantColumnLoader.ConstantColumnSpec

Packages that use ConstantColumnLoader.ConstantColumnSpec

Package	Description
org.apache.drill.exec.physical.impl.scan.file	Handles optional file metadata columns: implicit columns and partition columns.
org.apache.drill.exec.physical.impl.scan.project	Provides run-time semantic analysis of the projection list for the scan operator.

Uses of ConstantColumnLoader.ConstantColumnSpec in org.apache.drill.exec.physical.impl.scan.file

Classes in org.apache.drill.exec.physical.impl.scan.file that implement ConstantColumnLoader.ConstantColumnSpec

Modifier and Type	Class	Description
class	FileMetadataColumn	Represents projection column which resolved to a file metadata (AKA "implicit") column such as "filename", "fqn", etc.
class	MetadataColumn	Resolved value for a metadata column (implicit file or partition column.) Resolution here means identifying a value for the column.
class	PartitionColumn	Represents a partition column (usually dir0, dir1, ...).

Uses of ConstantColumnLoader.ConstantColumnSpec in org.apache.drill.exec.physical.impl.scan.project

Methods in org.apache.drill.exec.physical.impl.scan.project that return types with arguments of type ConstantColumnLoader.ConstantColumnSpec

Modifier and Type	Method	Description
List<? extends ConstantColumnLoader.ConstantColumnSpec>	ConstantColumnLoader.columns()

Constructor parameters in org.apache.drill.exec.physical.impl.scan.project with type arguments of type ConstantColumnLoader.ConstantColumnSpec

Modifier	Constructor	Description
	ConstantColumnLoader(ResultVectorCache vectorCache, List<? extends ConstantColumnLoader.ConstantColumnSpec> defns)