org.apache.druid.segment

Class ColumnCache

java.lang.Object

org.apache.druid.segment.ColumnCache

All Implemented Interfaces:

Expr.InputBindingInspector, ColumnInspector, ColumnSelector

public class ColumnCache
extends Object
implements ColumnSelector

Constructor Summary

Constructors

Constructor and Description
ColumnCache(QueryableIndex index, Closer closer)

Method Summary

Modifier and Type	Method and Description
BaseColumn	getColumn(String columnName)
ColumnHolder	getColumnHolder(String columnName)
List<String>	getColumnNames() This method is apparently no longer used anymore, so deprecating it.

Methods inherited from class java.lang.Object

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

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

getColumnCapabilities

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

getColumnCapabilitiesWithDefault, getType

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

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

Constructor Detail

ColumnCache

public ColumnCache(QueryableIndex index,
                   Closer closer)

Method Detail

getColumnNames

public List<String> getColumnNames()

Description copied from interface: ColumnSelector

This method is apparently no longer used anymore, so deprecating it.

Specified by:

getColumnNames in interface ColumnSelector

getColumnHolder

@Nullable
public ColumnHolder getColumnHolder(String columnName)

Specified by:

getColumnHolder in interface ColumnSelector

getColumn

@Nullable
public BaseColumn getColumn(String columnName)