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

Class ResolvedTableColumn

java.lang.Object

org.apache.drill.exec.physical.impl.scan.project.ResolvedColumn

org.apache.drill.exec.physical.impl.scan.project.ResolvedTableColumn

All Implemented Interfaces:

ColumnProjection

Direct Known Subclasses:

ResolvedColumnsArrayColumn

public class ResolvedTableColumn
extends ResolvedColumn

Column that matches one provided by the table. Provides the data type of that column and information to project from the result set loader output container to the scan output container. (Note that the result set loader container is, itself, a projection from the actual table schema to the desired set of columns; but in the order specified by the table.)

Constructor Summary

Constructors

Constructor	Description
ResolvedTableColumn(String projectedName, MaterializedField schema, VectorSource source, int sourceIndex)
ResolvedTableColumn(ColumnMetadata outputCol, VectorSource source, int sourceIndex)

Method Summary

Modifier and Type	Method	Description
String	name()	The name of the column as it appears in the output row (record batch.)
MaterializedField	schema()	Return the type of this column.
String	toString()

Methods inherited from class org.apache.drill.exec.physical.impl.scan.project.ResolvedColumn

metadata, project, source, sourceIndex

Methods inherited from class java.lang.Object

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

Constructor Details

ResolvedTableColumn

public ResolvedTableColumn(String projectedName,
 MaterializedField schema,
 VectorSource source,
 int sourceIndex)

ResolvedTableColumn

public ResolvedTableColumn(ColumnMetadata outputCol,
 VectorSource source,
 int sourceIndex)

Method Details

name

public String name()

Description copied from interface: ColumnProjection

The name of the column as it appears in the output row (record batch.)

Returns:

the output column name

schema

public MaterializedField schema()

Description copied from class: ResolvedColumn

Return the type of this column. Used primarily by the schema smoothing mechanism.

Specified by:

schema in class ResolvedColumn

Returns:

the MaterializedField representation of this column

toString

public String toString()

Overrides:

toString in class Object