Struct TextDictReader 

pub struct TextDictReader { /* private fields */ }

Sorted dictionary for text ordinal columns.

Zero-copy: the dictionary data is a shared slice of the .fast file. An offset table (one u32 per entry) is built at open time so that individual strings can be accessed without scanning.

Implementations

impl TextDictReader

pub fn open( file_data: &OwnedBytes, dict_start: usize, count: u32, ) -> Result<Self>

Open a zero-copy text dictionary from file_data starting at dict_start.

pub fn get(&self, ordinal: u32) -> Option<&str>

Get string by ordinal — zero-copy borrow from the underlying file data.

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

Binary search for a string → ordinal.

pub fn len(&self) -> u32

Number of entries in the dictionary.

pub fn is_empty(&self) -> bool

Whether the dictionary is empty.

pub fn iter(&self) -> impl Iterator<Item = &str>

Iterate all entries.