refactor(sql): add query_map_collect()

src/sql.rs

@@ -386,6 +386,27 @@ impl Sql {
         .await
     }
 
+    /// Prepares and executes the statement and maps a function over the resulting rows.
+    ///
+    /// Collects the resulting rows into a generic structure.
+    pub async fn query_map_collect<T, C, F>(
+        &self,
+        sql: &str,
+        params: impl rusqlite::Params + Send,
+        f: F,
+    ) -> Result<C>
+    where
+        T: Send + 'static,
+        C: Send + 'static + std::iter::FromIterator<T>,
+        F: Send + FnMut(&rusqlite::Row) -> rusqlite::Result<T>,
+    {
+        self.query_map(sql, params, f, |rows| {
+            rows.collect::<std::result::Result<C, _>>()
+                .map_err(Into::into)
+        })
+        .await
+    }
+
     /// Prepares and executes the statement and maps a function over the resulting rows.
     ///
     /// Collects the resulting rows into a `Vec`.
@@ -399,11 +420,7 @@ impl Sql {
         T: Send + 'static,
         F: Send + FnMut(&rusqlite::Row) -> rusqlite::Result<T>,
     {
-        self.query_map(sql, params, f, |rows| {
-            rows.collect::<std::result::Result<Vec<_>, _>>()
-                .map_err(Into::into)
-        })
-        .await
+        self.query_map_collect(sql, params, f).await
     }
 
     /// Used for executing `SELECT COUNT` statements only. Returns the resulting count.