fn eq()

in crates/iceberg/src/expr/visitors/row_group_metrics_evaluator.rs [288:321]


    fn eq(
        &mut self,
        reference: &BoundReference,
        datum: &Datum,
        _predicate: &BoundPredicate,
    ) -> Result<bool> {
        let field_id = reference.field().id;

        if self.contains_nulls_only(field_id) {
            return ROW_GROUP_CANT_MATCH;
        }

        if let Some(lower_bound) = self.min_value(field_id)? {
            if lower_bound.is_nan() {
                // NaN indicates unreliable bounds.
                // See the InclusiveMetricsEvaluator docs for more.
                return ROW_GROUP_MIGHT_MATCH;
            } else if lower_bound.gt(datum) {
                return ROW_GROUP_CANT_MATCH;
            }
        }

        if let Some(upper_bound) = self.max_value(field_id)? {
            if upper_bound.is_nan() {
                // NaN indicates unreliable bounds.
                // See the InclusiveMetricsEvaluator docs for more.
                return ROW_GROUP_MIGHT_MATCH;
            } else if upper_bound.lt(datum) {
                return ROW_GROUP_CANT_MATCH;
            }
        }

        ROW_GROUP_MIGHT_MATCH
    }