org.apache.druid.query

Class DefaultBitmapResultFactory

java.lang.Object

org.apache.druid.query.DefaultBitmapResultFactory

All Implemented Interfaces:

BitmapResultFactory<ImmutableBitmap>

public final class DefaultBitmapResultFactory
extends Object
implements BitmapResultFactory<ImmutableBitmap>

Constructor Summary

Constructors

Constructor and Description
DefaultBitmapResultFactory(BitmapFactory factory)

Method Summary

Modifier and Type	Method and Description
ImmutableBitmap	complement(ImmutableBitmap bitmapResult, int numRows) Delegates to BitmapFactory.complement(ImmutableBitmap, int) on the wrapped bitmap, and returns a bitmap result wrapping the resulting complement ImmutableBitmap.
ImmutableBitmap	intersection(Iterable<ImmutableBitmap> bitmapResults) Delegates to BitmapFactory.intersection(Iterable) on the wrapped bitmaps, and returns a bitmap result wrapping the resulting intersection ImmutableBitmap.
boolean	isEmpty(ImmutableBitmap bitmapResult) Checks that the wrapped bitmap is empty, see ImmutableBitmap.isEmpty().
ImmutableBitmap	toImmutableBitmap(ImmutableBitmap bitmapResult) Unwraps bitmapResult back to ImmutableBitmap.
ImmutableBitmap	union(Iterable<ImmutableBitmap> bitmapResults) Delegates to BitmapFactory.union(Iterable) on the wrapped bitmaps, and returns a bitmap result wrapping the resulting union ImmutableBitmap.
ImmutableBitmap	unionDimensionValueBitmaps(Iterable<ImmutableBitmap> dimensionValueBitmaps) Equivalent of intersection(Iterables.transform(dimensionValueBitmaps, factory::wrapDimensionValue)), but doesn't create a lot of bitmap result objects.
ImmutableBitmap	wrapAllFalse(ImmutableBitmap allFalseBitmap) Wraps a bitmap which is a result of BitmapFactory.makeEmptyImmutableBitmap() call.
ImmutableBitmap	wrapAllTrue(ImmutableBitmap allTrueBitmap) Wraps a bitmap which is a result of BitmapFactory.complement(ImmutableBitmap, int) called with BitmapFactory.makeEmptyImmutableBitmap() as argument.
ImmutableBitmap	wrapDimensionValue(ImmutableBitmap bitmap) Wraps a bitmap which designates rows in a segment with some specific dimension value.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBitmapResultFactory

public DefaultBitmapResultFactory(BitmapFactory factory)

Method Detail

wrapDimensionValue

public ImmutableBitmap wrapDimensionValue(ImmutableBitmap bitmap)

Description copied from interface: BitmapResultFactory

Wraps a bitmap which designates rows in a segment with some specific dimension value.

Specified by:

wrapDimensionValue in interface BitmapResultFactory<ImmutableBitmap>

wrapAllFalse

public ImmutableBitmap wrapAllFalse(ImmutableBitmap allFalseBitmap)

Description copied from interface: BitmapResultFactory

Wraps a bitmap which is a result of BitmapFactory.makeEmptyImmutableBitmap() call.

Specified by:

wrapAllFalse in interface BitmapResultFactory<ImmutableBitmap>

wrapAllTrue

public ImmutableBitmap wrapAllTrue(ImmutableBitmap allTrueBitmap)

Description copied from interface: BitmapResultFactory

Wraps a bitmap which is a result of BitmapFactory.complement(ImmutableBitmap, int) called with BitmapFactory.makeEmptyImmutableBitmap() as argument.

Specified by:

wrapAllTrue in interface BitmapResultFactory<ImmutableBitmap>

isEmpty

public boolean isEmpty(ImmutableBitmap bitmapResult)

Description copied from interface: BitmapResultFactory

Checks that the wrapped bitmap is empty, see ImmutableBitmap.isEmpty().

Specified by:

isEmpty in interface BitmapResultFactory<ImmutableBitmap>

intersection

public ImmutableBitmap intersection(Iterable<ImmutableBitmap> bitmapResults)

Description copied from interface: BitmapResultFactory

Delegates to BitmapFactory.intersection(Iterable) on the wrapped bitmaps, and returns a bitmap result wrapping the resulting intersection ImmutableBitmap.

Specified by:

intersection in interface BitmapResultFactory<ImmutableBitmap>

union

public ImmutableBitmap union(Iterable<ImmutableBitmap> bitmapResults)

Description copied from interface: BitmapResultFactory

Delegates to BitmapFactory.union(Iterable) on the wrapped bitmaps, and returns a bitmap result wrapping the resulting union ImmutableBitmap.

Specified by:

union in interface BitmapResultFactory<ImmutableBitmap>

unionDimensionValueBitmaps

public ImmutableBitmap unionDimensionValueBitmaps(Iterable<ImmutableBitmap> dimensionValueBitmaps)

Description copied from interface: BitmapResultFactory

Equivalent of intersection(Iterables.transform(dimensionValueBitmaps, factory::wrapDimensionValue)), but doesn't create a lot of bitmap result objects.

Specified by:

unionDimensionValueBitmaps in interface BitmapResultFactory<ImmutableBitmap>

complement

public ImmutableBitmap complement(ImmutableBitmap bitmapResult,
                                  int numRows)

Description copied from interface: BitmapResultFactory

Delegates to BitmapFactory.complement(ImmutableBitmap, int) on the wrapped bitmap, and returns a bitmap result wrapping the resulting complement ImmutableBitmap.

Specified by:

complement in interface BitmapResultFactory<ImmutableBitmap>

toImmutableBitmap

public ImmutableBitmap toImmutableBitmap(ImmutableBitmap bitmapResult)

Description copied from interface: BitmapResultFactory

Unwraps bitmapResult back to ImmutableBitmap. BitmapResultFactory should emit query metric dimension(s) in the implementation of this method.

Specified by:

toImmutableBitmap in interface BitmapResultFactory<ImmutableBitmap>