MeiliSearch/src/heed_codec/roaring_bitmap_codec.rs
2020-08-28 13:31:16 +02:00

23 lines
559 B
Rust

use std::borrow::Cow;
use roaring::RoaringBitmap;
pub struct RoaringBitmapCodec;
impl heed::BytesDecode<'_> for RoaringBitmapCodec {
type DItem = RoaringBitmap;
fn bytes_decode(bytes: &[u8]) -> Option<Self::DItem> {
RoaringBitmap::deserialize_from(bytes).ok()
}
}
impl heed::BytesEncode<'_> for RoaringBitmapCodec {
type EItem = RoaringBitmap;
fn bytes_encode(item: &Self::EItem) -> Option<Cow<[u8]>> {
let mut bytes = Vec::new();
item.serialize_into(&mut bytes).ok()?;
Some(Cow::Owned(bytes))
}
}