Struct MetadataIndex 

pub struct MetadataIndex { /* private fields */ }

Composite metadata index supporting multiple field types

Implementations

impl MetadataIndex

pub fn new() -> Self

Create a new metadata index

pub fn add_equality(&mut self, field: &str, value: &FilterValue, doc_id: u64)

Add an equality field value

pub fn add_string(&mut self, field: &str, value: &str, doc_id: u64)

Add a string equality field

pub fn add_range(&mut self, field: &str, value: i64, doc_id: u64)

Add a range field value (for time, scores, etc.)

pub fn add_timestamp(&mut self, field: &str, timestamp: u64, doc_id: u64)

Add a timestamp (convenience for u64 timestamps)

pub fn set_doc_count(&mut self, count: usize)

Update document count

pub fn inc_doc_count(&mut self)

Increment document count

pub fn doc_count(&self) -> usize

Get document count

pub fn evaluate_atom(&self, atom: &FilterAtom) -> AllowedSet

Evaluate a filter atom

pub fn evaluate(&self, filter: &FilterIR) -> AllowedSet

Evaluate a complete filter IR

This is the main entry point for computing AllowedSet from FilterIR.

pub fn estimate_selectivity(&self, filter: &FilterIR) -> f64

Get selectivity estimate for a filter

Trait Implementations

impl Debug for MetadataIndex

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

Formats the value using the given formatter.

impl Default for MetadataIndex

fn default() -> MetadataIndex

Returns the “default value” for a type.