Examples with WrappedImmutableRoaringBitmap io.druid.collections.bitmap.WrappedImmutableRoaringBitmap used on opensource projects

Example 1 with WrappedImmutableRoaringBitmap

use of io.druid.collections.bitmap.WrappedImmutableRoaringBitmap in project druid by druid-io.

the class BitmapOffset method getReverseBitmapOffsetIterator.

public static IntIterator getReverseBitmapOffsetIterator(ImmutableBitmap bitmapIndex) {
    ImmutableBitmap roaringBitmap = bitmapIndex;
    if (!(bitmapIndex instanceof WrappedImmutableRoaringBitmap)) {
        final MutableBitmap bitmap = ROARING_BITMAP_FACTORY.makeEmptyMutableBitmap();
        final IntIterator iterator = bitmapIndex.iterator();
        while (iterator.hasNext()) {
            bitmap.add(iterator.next());
        }
        roaringBitmap = ROARING_BITMAP_FACTORY.makeImmutableBitmap(bitmap);
    }
    return ((WrappedImmutableRoaringBitmap) roaringBitmap).getBitmap().getReverseIntIterator();
}