Struct FacetOperator 

pub struct FacetOperator {
    pub field: String,
    pub source: Option<Arc<dyn Operator>>,
}

Facet_f: count distinct values of a field over a source posting list (or the entire document store). The result is a posting list whose payload.fields carry _facet_field, _facet_value, _facet_count, matching the serialized UQA encoding.

Fields

field: String

source: Option<Arc<dyn Operator>>

Implementations

impl FacetOperator

pub fn new(field: impl Into<String>, source: Option<Arc<dyn Operator>>) -> Self

Trait Implementations

impl Operator for FacetOperator

fn execute(&self, ctx: &ExecutionContext) -> OperatorResult

fn cost_estimate(&self, stats: &IndexStats) -> f64