fn visit_inequality()

in crates/iceberg/src/expr/visitors/inclusive_metrics_evaluator.rs [97:131]

• 27 lines of code
• 7 McCabe index (conditional complexity)

    fn visit_inequality(
        &mut self,
        reference: &BoundReference,
        datum: &Datum,
        cmp_fn: fn(&Datum, &Datum) -> bool,
        use_lower_bound: bool,
    ) -> crate::Result<bool> {
        let field_id = reference.field().id;

        if self.contains_nulls_only(field_id) || self.contains_nans_only(field_id) {
            return ROWS_CANNOT_MATCH;
        }

        if datum.is_nan() {
            // NaN indicates unreliable bounds.
            // See the InclusiveMetricsEvaluator docs for more.
            return ROWS_MIGHT_MATCH;
        }

        let bound = if use_lower_bound {
            self.lower_bound(field_id)
        } else {
            self.upper_bound(field_id)
        };

        if let Some(bound) = bound {
            if cmp_fn(bound, datum) {
                return ROWS_MIGHT_MATCH;
            }

            return ROWS_CANNOT_MATCH;
        }

        ROWS_MIGHT_MATCH
    }