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Add linear facet databases

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ManyTheFish 2024-11-13 11:34:49 +01:00 • committed by Clément Renault
parent b17896d899
commit 51b6293738
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4 changed files with 202 additions and 23 deletions
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29
crates/milli/src/heed_codec/facet/ordered_f64_codec.rs
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@ -27,17 +27,34 @@ impl heed::BytesEncode<'_> for OrderedF64Codec {
fn bytes_encode(f: &Self::EItem) -> Result<Cow<'_, [u8]>, BoxedError> {
let mut buffer = [0u8; 16];
// write the globally ordered float
let bytes = f64_into_bytes(*f).ok_or(InvalidGloballyOrderedFloatError { float: *f })?;
buffer[..8].copy_from_slice(&bytes[..]);
// Then the f64 value just to be able to read it back
let bytes = f.to_be_bytes();
buffer[8..16].copy_from_slice(&bytes[..]);
encode_f64_into_ordered_bytes(*f, &mut buffer)?;
Ok(Cow::Owned(buffer.to_vec()))
}
}
impl OrderedF64Codec {
pub fn serialize_into(
f: f64,
buffer: &mut [u8; 16],
) -> Result<(), InvalidGloballyOrderedFloatError> {
encode_f64_into_ordered_bytes(f, buffer)
}
}
fn encode_f64_into_ordered_bytes(
f: f64,
buffer: &mut [u8; 16],
) -> Result<(), InvalidGloballyOrderedFloatError> {
let bytes = f64_into_bytes(f).ok_or(InvalidGloballyOrderedFloatError { float: f })?;
buffer[..8].copy_from_slice(&bytes[..]);
// Then the f64 value just to be able to read it back
let bytes = f.to_be_bytes();
buffer[8..16].copy_from_slice(&bytes[..]);
Ok(())
}
#[derive(Error, Debug)]
#[error("the float {float} cannot be converted to a globally ordered representation")]
pub struct InvalidGloballyOrderedFloatError {