Uses of Interface
org.apache.drill.exec.physical.impl.scan.project.NullColumnLoader.NullColumnSpec

Packages that use NullColumnLoader.NullColumnSpec

Package	Description
org.apache.drill.exec.physical.impl.scan.project	Provides run-time semantic analysis of the projection list for the scan operator.

Uses of NullColumnLoader.NullColumnSpec in org.apache.drill.exec.physical.impl.scan.project

Classes in org.apache.drill.exec.physical.impl.scan.project that implement NullColumnLoader.NullColumnSpec

Modifier and Type	Class	Description
class	ResolvedNullColumn	Projected column that serves as both a resolved column (provides projection mapping) and a null column spec (provides the information needed to create the required null vectors.)

Fields in org.apache.drill.exec.physical.impl.scan.project with type parameters of type NullColumnLoader.NullColumnSpec

Modifier and Type	Field	Description
protected final List<NullColumnLoader.NullColumnSpec>	NullColumnBuilder.nullCols	Creates null columns if needed.

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

Modifier	Constructor	Description
	NullColumnLoader(ResultVectorCache vectorCache, List<? extends NullColumnLoader.NullColumnSpec> defns, TypeProtos.MajorType nullType, boolean allowRequired)