fn eq()

in crates/iceberg/src/expr/visitors/inclusive_metrics_evaluator.rs [249:282]

• 30 lines of code
• 11 McCabe index (conditional complexity)

    fn eq(
        &mut self,
        reference: &BoundReference,
        datum: &Datum,
        _predicate: &BoundPredicate,
    ) -> 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 let Some(lower_bound) = self.lower_bound(field_id) {
            if lower_bound.is_nan() {
                // NaN indicates unreliable bounds.
                // See the InclusiveMetricsEvaluator docs for more.
                return ROWS_MIGHT_MATCH;
            } else if lower_bound.gt(datum) {
                return ROWS_CANNOT_MATCH;
            }
        }

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

        ROWS_MIGHT_MATCH
    }