Struct PostingBlock 

pub struct PostingBlock {
    pub doc_ids: Vec<Surrogate>,
    pub term_freqs: Vec<u32>,
    pub fieldnorms: Vec<u8>,
    pub positions: Vec<Vec<u32>>,
}

A block of up to 128 postings in compressed form.

Provides both in-memory access (via decode) and serialized byte representation (via to_bytes / from_bytes).

Fields

doc_ids: Vec<Surrogate>

Sorted surrogate IDs in this block.

term_freqs: Vec<u32>

Term frequencies, parallel to doc_ids.

fieldnorms: Vec<u8>

SmallFloat-encoded fieldnorms, parallel to doc_ids.

positions: Vec<Vec<u32>>

Per-document position lists, parallel to doc_ids.

Implementations

impl PostingBlock

pub fn from_postings(postings: &[CompactPosting]) -> Self

Create a block from a slice of compact postings.

Postings MUST be sorted by doc_id. Panics in debug if unsorted. Truncates to BLOCK_SIZE if more are provided.

pub fn len(&self) -> usize

Number of documents in this block.

pub fn is_empty(&self) -> bool

Whether the block is empty.

pub fn meta(&self) -> BlockMeta

Compute block metadata for BMW skip index.

pub fn to_bytes(&self) -> Vec<u8>

Serialize the block to bytes.

Layout:

[doc_count: u16 LE]
[packed_doc_id_deltas: len u32 LE + bytes]
[packed_term_freqs: len u32 LE + bytes]
[fieldnorms: doc_count bytes]
[position_data: for each doc, count u16 LE + packed positions]

pub fn from_bytes(buf: &[u8]) -> Option<Self>

Deserialize a block from bytes. Returns None if malformed.

Trait Implementations

impl Clone for PostingBlock

fn clone(&self) -> PostingBlock

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PostingBlock

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.