perf: index factor lookups by symbol

2026-08-31 14:27:30 +08:00
parent ce46e42ff7
commit dff791b51f
1 changed files with 4 additions and 2 deletions
@@ -2501,12 +2501,14 @@ impl DataSet {
        if start > end {
            return Vec::new();
        }
+        let Some(symbol_id) = self.symbol_id(symbol) else {
+            return Vec::new();
+        };
        let field = normalize_field(field);
        let mut rows = self
            .factor_by_date
            .range(start..=end)
-            .flat_map(|(_, snapshots)| snapshots.iter())
-            .filter(|snapshot| snapshot.symbol == symbol)
+            .filter_map(|(date, _)| self.factor_by_symbol_id(*date, symbol_id))
            .filter_map(|snapshot| {
                factor_numeric_value(snapshot, &field).map(|value| FactorValue {
                    date: snapshot.date,