Trait Query 

pub trait Query: Send + Sync {
    // Required methods
    fn scorer<'a>(
        &self,
        reader: &'a SegmentReader,
        limit: usize,
    ) -> ScorerFuture<'a>;
    fn count_estimate<'a>(&self, reader: &'a SegmentReader) -> CountFuture<'a>;

    // Provided method
    fn as_term_query_info(&self) -> Option<TermQueryInfo> { ... }
}

A search query (async)

Note: scorer takes &self (not &'a self) so that scorers don’t borrow the query. This enables query composition - queries can create sub-queries locally and get their scorers. Implementations must clone/capture any data they need during scorer creation.

Required Methods

fn scorer<'a>( &self, reader: &'a SegmentReader, limit: usize, ) -> ScorerFuture<'a>

Create a scorer for this query against a single segment (async)

The limit parameter specifies the maximum number of results to return. This is passed from the top-level search limit.

Note: The scorer borrows only the reader, not the query. Implementations should capture any needed query data (field, terms, etc.) during creation.

fn count_estimate<'a>(&self, reader: &'a SegmentReader) -> CountFuture<'a>

Estimated number of matching documents in a segment (async)

Provided Methods

fn as_term_query_info(&self) -> Option<TermQueryInfo>

Return term info if this is a simple term query eligible for WAND optimization

Returns None for complex queries (boolean, phrase, etc.)

Trait Implementations

impl Query for Box<dyn Query>

fn scorer<'a>( &self, reader: &'a SegmentReader, limit: usize, ) -> ScorerFuture<'a>

Create a scorer for this query against a single segment (async)

fn count_estimate<'a>(&self, reader: &'a SegmentReader) -> CountFuture<'a>

Estimated number of matching documents in a segment (async)

fn as_term_query_info(&self) -> Option<TermQueryInfo>

Return term info if this is a simple term query eligible for WAND optimization

Implementations on Foreign Types

impl Query for Box<dyn Query>

fn scorer<'a>( &self, reader: &'a SegmentReader, limit: usize, ) -> ScorerFuture<'a>

fn count_estimate<'a>(&self, reader: &'a SegmentReader) -> CountFuture<'a>

fn as_term_query_info(&self) -> Option<TermQueryInfo>

Implementors

impl Query for BooleanQuery

impl Query for BoostQuery

impl Query for DenseVectorQuery

impl Query for PhraseQuery

impl Query for SparseVectorQuery

impl Query for TermQuery

impl Query for WandOrQuery