Struct FastFieldReader 

pub struct FastFieldReader {
    pub column_type: FastFieldColumnType,
    pub num_docs: u32,
    /* private fields */
}

Reads a single fast-field column from mmap/buffer with O(1) doc_id access.

Zero-copy: column data and text dictionary are borrowed slices of the underlying mmap / OwnedBytes; no heap allocation per column.

Fields

column_type: FastFieldColumnType

num_docs: u32

Implementations

impl FastFieldReader

pub fn open(file_data: &OwnedBytes, toc: &FastFieldTocEntry) -> Result<Self>

Open a column from an OwnedBytes file buffer using a TOC entry. Zero-copy: the returned reader borrows slices of file_data.

pub fn get_u64(&self, doc_id: u32) -> u64

Get raw u64 value for a doc_id. Returns 0/sentinel for out-of-range.

pub fn get_i64(&self, doc_id: u32) -> i64

Get decoded i64 value (zigzag-decoded).

pub fn get_f64(&self, doc_id: u32) -> f64

Get decoded f64 value (sortable-decoded).

pub fn get_ordinal(&self, doc_id: u32) -> u64

Get the text ordinal for a doc_id. Returns TEXT_MISSING_ORDINAL if missing.

pub fn get_text(&self, doc_id: u32) -> Option<&str>

Get the text string for a doc_id (looks up ordinal in dictionary). Returns None if the doc has no value or ordinal is missing.

pub fn text_ordinal(&self, text: &str) -> Option<u64>

Look up text string → ordinal. Returns None if not found.

pub fn text_dict(&self) -> Option<&TextDictReader>

Access the text dictionary reader (if this is a text column).

pub fn min_value(&self) -> u64

Min value stored in this column (before encoding).

pub fn bits_per_value(&self) -> u8

Bits per value in this column.

pub fn raw_data(&self) -> &OwnedBytes

Raw packed column bytes — for stackable merge (zero-copy).