Struct PredicatesIndexApplier

pub struct PredicatesIndexApplier {
    fst_appliers: Vec<(String, Box<dyn FstApplier>)>,
}

PredicatesIndexApplier contains a collection of FstAppliers, each associated with an index name, to process and filter index data based on compiled predicates.

Fields

fst_appliers: Vec<(String, Box<dyn FstApplier>)>

A list of FstAppliers, each associated with a specific index name (e.g. a tag field uses its column name as index name)

Implementations

impl PredicatesIndexApplier

pub fn try_from(predicates: Vec<(String, Vec<Predicate>)>) -> Result<Self>

Constructs an instance of PredicatesIndexApplier based on a list of tag predicates. Chooses an appropriate FstApplier for each index name based on the nature of its predicates.

fn bitmap_full_range(metadata: &InvertedIndexMetas) -> Bitmap

Creates a Bitmap representing the full range of data in the index for initial scanning.

Trait Implementations

impl IndexApplier for PredicatesIndexApplier

fn apply<'a, 'life0, 'life1, 'async_trait>( &'life0 self, context: SearchContext, reader: &'life1 mut (dyn InvertedIndexReader + 'a), ) -> Pin<Box<dyn Future<Output = Result<ApplyOutput>> + Send + 'async_trait>>

where Self: 'async_trait, 'a: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Applies all FstAppliers to the data in the inverted index reader, intersecting the individual bitmaps obtained for each index to result in a final set of indices.

fn memory_usage(&self) -> usize

Returns the memory usage of the applier.

impl TryFrom<Vec<(String, Vec<Predicate>)>> for PredicatesIndexApplier

type Error = Error

The type returned in the event of a conversion error.

fn try_from(predicates: Vec<(String, Vec<Predicate>)>) -> Result<Self>

Performs the conversion.