Enum QueryStage 

pub enum QueryStage {
    VectorSearch {
        vector: Vec<f32>,
        k: usize,
        filter: Option<FilterExpr>,
    },
    HybridSearch {
        vector: Vec<f32>,
        keywords: String,
        k: usize,
        alpha: f32,
        filter: Option<FilterExpr>,
    },
    Rerank {
        k: usize,
        model: Option<String>,
    },
    MMR {
        k: usize,
        lambda: f32,
    },
    Filter {
        expr: FilterExpr,
    },
}

A single stage in a prefetch query pipeline

Variants

VectorSearch

Vector similarity search stage

Fields

vector: Vec<f32>

k: usize

filter: Option<FilterExpr>

HybridSearch

Hybrid search stage (vector + BM25)

Fields

vector: Vec<f32>

keywords: String

k: usize

alpha: f32

filter: Option<FilterExpr>

Rerank

Rerank using cross-encoder or other scoring function

Fields

k: usize

Number of results to keep after reranking

model: Option<String>

Optional: model name for cross-encoder

MMR

Maximal Marginal Relevance for diversity

Fields

k: usize

Number of diverse results to keep

lambda: f32

Trade-off between relevance and diversity (0.0 = all diversity, 1.0 = all relevance)

Filter

Filter stage (apply additional filters)

Fields

expr: FilterExpr

Trait Implementations

impl Clone for QueryStage

fn clone(&self) -> QueryStage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueryStage

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

Formats the value using the given formatter.