io.druid.collections.bitmap

Interface ImmutableBitmap

All Known Subinterfaces:

MutableBitmap

All Known Implementing Classes:

WrappedBitSetBitmap, WrappedConciseBitmap, WrappedImmutableBitSetBitmap, WrappedImmutableConciseBitmap, WrappedImmutableRoaringBitmap, WrappedRoaringBitmap

public interface ImmutableBitmap

This class is meant to represent a simple wrapper around an immutable bitmap class.

Method Summary

Modifier and Type	Method and Description
boolean	get(int value) Returns true if the bit at position value is set
ImmutableBitmap	intersection(ImmutableBitmap otherBitmap) Compute the bitwise-and of this bitmap with another bitmap.
boolean	isEmpty()
org.roaringbitmap.IntIterator	iterator()
int	size()
byte[]	toBytes()

Method Detail

iterator

org.roaringbitmap.IntIterator iterator()

Returns:

an iterator over the set bits of this bitmap

size

int size()

Returns:

The number of bits set to true in this bitmap

toBytes

byte[] toBytes()

isEmpty

boolean isEmpty()

Returns:

True if this bitmap is empty (contains no set bit)

get

boolean get(int value)

Returns true if the bit at position value is set

Parameters:

value - the position to check

Returns:

true if bit is set

intersection

ImmutableBitmap intersection(ImmutableBitmap otherBitmap)

Compute the bitwise-and of this bitmap with another bitmap. A new bitmap is generated. Note that the other bitmap should be of the same class instance.

Parameters:

otherBitmap - other bitmap