Package org.roaringbitmap

Class BitSetUtil

  • public class BitSetUtil
extends java.lang.Object
    This class provides convenience functions to manipulate BitSet and RoaringBitmap objects.

    • Constructor Summary

      Constructors 
      Constructor Description
      BitSetUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static RoaringBitmap bitmapOf​(long[] words)
      Generate a RoaringBitmap out of a long[], each long using little-endian representation of its bits
      static RoaringBitmap bitmapOf​(java.util.BitSet bitSet)
      Generate a RoaringBitmap out of a BitSet
      static boolean equals​(java.util.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​(java.util.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​(java.util.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