org.roaringbitmap

Class BitSetUtil

java.lang.Object

org.roaringbitmap.BitSetUtil

public class BitSetUtil
extends Object

This class provides convenience functions to manipulate BitSet and RoaringBitmap objects.

Constructor Summary

Constructors

Constructor and Description
BitSetUtil()

Method Summary

Modifier and Type	Method and Description
static RoaringBitmap	bitmapOf(BitSet bitSet) Generate a RoaringBitmap out of a BitSet
static RoaringBitmap	bitmapOf(long[] words) Generate a RoaringBitmap out of a long[], each long using little-endian representation of its bits
static boolean	equals(BitSet bitset, RoaringBitmap bitmap) Compares a RoaringBitmap and a BitSet.

Methods inherited from class java.lang.Object

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

Constructor Detail

BitSetUtil

public BitSetUtil()

Method Detail

bitmapOf

public static RoaringBitmap bitmapOf(BitSet bitSet)

Generate a RoaringBitmap out of a BitSet

Parameters:

bitSet - original bitset (will not be modified)

Returns:

roaring bitmap equivalent to BitSet

bitmapOf

public static RoaringBitmap bitmapOf(long[] words)

Generate a RoaringBitmap out of a long[], each long using little-endian representation of its bits

Parameters:

words - array of longs (will not be modified)

Returns:

roaring bitmap

See Also:

for an equivalent

equals

public static boolean equals(BitSet bitset,
                             RoaringBitmap bitmap)

Compares a RoaringBitmap and a BitSet. They are equal if and only if they contain the same set of integers.

Parameters:

bitset - first object to be compared

bitmap - second object to be compared

Returns:

whether they are equals