Package org.apache.druid.query.groupby.epinephelinae.column

Class GroupByColumnSelectorPlus

java.lang.Object

org.apache.druid.query.ColumnSelectorPlus<GroupByColumnSelectorStrategy>

org.apache.druid.query.groupby.epinephelinae.column.GroupByColumnSelectorPlus

All Implemented Interfaces:

GroupingSelector

public class GroupByColumnSelectorPlus
extends ColumnSelectorPlus<GroupByColumnSelectorStrategy>
implements GroupingSelector

Constructor Summary

Constructors

Constructor	Description
GroupByColumnSelectorPlus(ColumnSelectorPlus<GroupByColumnSelectorStrategy> baseInfo, int keyBufferPosition, int resultRowPosition)

Method Summary

Modifier and Type	Method	Description
int	getKeyBufferPosition()
int	getResultRowPosition()
int	getValueCardinality()	Returns the value cardinality if it is known (such as when backed by a DimensionDictionarySelector).

Methods inherited from class org.apache.druid.query.ColumnSelectorPlus

getColumnSelectorStrategy, getName, getOutputName, getSelector

Methods inherited from class java.lang.Object

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

Constructor Details

GroupByColumnSelectorPlus

public GroupByColumnSelectorPlus(ColumnSelectorPlus<GroupByColumnSelectorStrategy> baseInfo,
 int keyBufferPosition,
 int resultRowPosition)

Method Details

getKeyBufferPosition

public int getKeyBufferPosition()

getResultRowPosition

public int getResultRowPosition()

getValueCardinality

public int getValueCardinality()

Description copied from interface: GroupingSelector

Returns the value cardinality if it is known (such as when backed by a DimensionDictionarySelector). If there are only null values, this method should return 1. If the cardinality is not known, returns DimensionDictionarySelector.CARDINALITY_UNKNOWN.

Specified by:

getValueCardinality in interface GroupingSelector