Struct tantivy::query::Union

pub struct Union<TScorer, TScoreCombiner = DoNothingCombiner> { /* fields omitted */ }

Creates a DocSet that iterate through the union of two or more DocSets.

Trait Implementations

impl<TScorer, TScoreCombiner> DocSet for Union<TScorer, TScoreCombiner> where
    TScorer: Scorer,
    TScoreCombiner: ScoreCombiner, 

fn advance(&mut self) -> DocId

Goes to the next element.

fn seek(&mut self, target: DocId) -> DocId

Advances the DocSet forward until reaching the target, or going to the lowest DocId greater than the target.

fn doc(&self) -> DocId

Returns the current document Right after creating a new DocSet, the docset points to the first document.

fn size_hint(&self) -> u32

Returns a best-effort hint of the length of the docset.

fn count_including_deleted(&mut self) -> u32

Returns the count of documents, deleted or not. Calling this method consumes the DocSet.

fn fill_buffer(&mut self, buffer: &mut [DocId]) -> usize

Fills a given mutable buffer with the next doc ids from the DocSet

fn count(&mut self, delete_bitset: &DeleteBitSet) -> u32

Returns the number documents matching. Calling this method consumes the DocSet.

impl<TScorer, TScoreCombiner> From<Vec<TScorer, Global>> for Union<TScorer, TScoreCombiner> where
    TScoreCombiner: ScoreCombiner,
    TScorer: Scorer, 

fn from(docsets: Vec<TScorer>) -> Union<TScorer, TScoreCombiner>

Performs the conversion.

impl<TScorer, TScoreCombiner> Scorer for Union<TScorer, TScoreCombiner> where
    TScoreCombiner: ScoreCombiner,
    TScorer: Scorer, 

fn score(&mut self) -> Score

Returns the score.