Query

Trait Query 

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

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

A search query (async)

Required Methods§

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fn scorer<'a>( &'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.

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

Estimated number of matching documents in a segment (async)

Provided Methods§

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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§

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impl Query for Box<dyn Query>

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

Create a scorer for this query against a single segment (async) Read more
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fn count_estimate<'a>(&'a self, reader: &'a SegmentReader) -> CountFuture<'a>

Estimated number of matching documents in a segment (async)
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fn as_term_query_info(&self) -> Option<TermQueryInfo>

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

Implementations on Foreign Types§

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impl Query for Box<dyn Query>

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

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

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

Implementors§