Package org.apache.druid.collections.bitmap

Interface BitmapFactory

All Known Implementing Classes:
BitSetBitmapFactory, ConciseBitmapFactory, RoaringBitmapFactory
public interface BitmapFactory

  • Method Details

    • makeEmptyMutableBitmap

      MutableBitmap makeEmptyMutableBitmap()
      Create a new empty bitmap
      Returns:
      the new bitmap

    • makeEmptyImmutableBitmap

      ImmutableBitmap makeEmptyImmutableBitmap()

    • makeImmutableBitmap

      ImmutableBitmap makeImmutableBitmap(MutableBitmap mutableBitmap)

    • mapImmutableBitmap

      ImmutableBitmap mapImmutableBitmap(ByteBuffer b)
      Given a ByteBuffer pointing at a serialized version of a bitmap, instantiate an immutable mapped bitmap. When using RoaringBitmap (with the RoaringBitmapFactory class), it is not necessary for b.limit() to indicate the end of the serialized content whereas it is critical to set b.limit() appropriately with ConciseSet (with the ConciseBitmapFactory).
      Parameters:
      b - the input byte buffer
      Returns:
      the new bitmap

    • union

      ImmutableBitmap union(Iterable<ImmutableBitmap> b)
      Compute the union (bitwise-OR) of a set of bitmaps. They are assumed to be instances of of the proper WrappedConciseBitmap otherwise a ClassCastException is thrown.
      Parameters:
      b - input ImmutableGenericBitmap objects
      Returns:
      the union.
      Throws:
      ClassCastException - if one of the ImmutableGenericBitmap objects if not an instance of WrappedImmutableConciseBitmap

    • intersection

      ImmutableBitmap intersection(Iterable<ImmutableBitmap> b)
      Compute the intersection (bitwise-AND) of a set of bitmaps. They are assumed to be instances of the proper WrappedConciseBitmap otherwise a ClassCastException is thrown.
      Parameters:
      b - input ImmutableGenericBitmap objects
      Returns:
      the union.
      Throws:
      ClassCastException - if one of the ImmutableGenericBitmap objects if not an instance of WrappedImmutableConciseBitmap

    • complement

      ImmutableBitmap complement(ImmutableBitmap b, int length)