Package org.apache.druid.segment

Interface ColumnSelector

All Superinterfaces:

ColumnInspector, Expr.InputBindingInspector

All Known Subinterfaces:

ColumnIndexSelector

All Known Implementing Classes:

ColumnCache

public interface ColumnSelector
extends ColumnInspector

Method Summary

Modifier and Type	Method	Description
default ColumnCapabilities	getColumnCapabilities(String column)	Returns capabilities of a particular column.
ColumnHolder	getColumnHolder(String columnName)

Methods inherited from interface org.apache.druid.segment.ColumnInspector

getType

Methods inherited from interface org.apache.druid.math.expr.Expr.InputBindingInspector

areNumeric, areNumeric, areSameTypes, areSameTypes, areScalar, areScalar, canVectorize, canVectorize

Method Details

getColumnHolder

@Nullable
ColumnHolder getColumnHolder(String columnName)

getColumnCapabilities

@Nullable
default ColumnCapabilities getColumnCapabilities(String column)

Description copied from interface: ColumnInspector

Returns capabilities of a particular column.

Specified by:

getColumnCapabilities in interface ColumnInspector

Parameters:

column - column name

Returns:

capabilities, or null