Package org.apache.druid.segment.index

Class AllUnknownBitmapColumnIndex

java.lang.Object

org.apache.druid.segment.index.AllUnknownBitmapColumnIndex

All Implemented Interfaces:

BitmapColumnIndex

public class AllUnknownBitmapColumnIndex
extends Object
implements BitmapColumnIndex

Like AllFalseBitmapColumnIndex during normal operation, except if called with 'includeUnknowns' becomes like AllTrueBitmapColumnIndex.

Constructor Summary

Constructors

Constructor	Description
AllUnknownBitmapColumnIndex(ColumnIndexSelector indexSelector)

Method Summary

Modifier and Type	Method	Description
<T> T	computeBitmapResult(BitmapResultFactory<T> bitmapResultFactory, boolean includeUnknown)	Compute a bitmap result wrapped with the BitmapResultFactory representing the rows matched by this index.
ColumnIndexCapabilities	getIndexCapabilities()

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.index.BitmapColumnIndex

computeBitmapResult

Constructor Detail

AllUnknownBitmapColumnIndex

public AllUnknownBitmapColumnIndex(ColumnIndexSelector indexSelector)

Method Detail

getIndexCapabilities

public ColumnIndexCapabilities getIndexCapabilities()

Specified by:

getIndexCapabilities in interface BitmapColumnIndex

computeBitmapResult

public <T> T computeBitmapResult(BitmapResultFactory<T> bitmapResultFactory,
                                 boolean includeUnknown)

Description copied from interface: BitmapColumnIndex

Compute a bitmap result wrapped with the BitmapResultFactory representing the rows matched by this index. If building a cursor, use BitmapColumnIndex.computeBitmapResult(BitmapResultFactory, int, int, boolean) instead.

Specified by:

computeBitmapResult in interface BitmapColumnIndex

Parameters:

bitmapResultFactory - helper to format the ImmutableBitmap in a form ready for consumption by callers

includeUnknown - mapping for Druid native two state logic system into SQL three-state logic system. If set to true, bitmaps returned by this method should include true bits for any rows where the matching result is 'unknown', such as from the input being null valued. See NullHandling.useThreeValueLogic().

Returns:

bitmap result representing rows matched by this index