nautilus_blockchain/cache/
rows.rs

1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2025 Posei Systems Pty Ltd. All rights reserved.
3//  https://poseitrader.io
4//
5//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6//  You may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9//  Unless required by applicable law or agreed to in writing, software
10//  distributed under the License is distributed on an "AS IS" BASIS,
11//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//  See the License for the specific language governing permissions and
13//  limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16use sqlx::{FromRow, Row, postgres::PgRow};
17
18/// A data transfer object that maps database rows to token data.
19///
20/// Implements `FromRow` trait to automatically convert PostgreSQL results into `TokenRow`
21/// objects that can be transformed into domain entity `Token` objects.
22#[derive(Debug)]
23pub struct TokenRow {
24    pub address: String,
25    pub name: String,
26    pub symbol: String,
27    pub decimals: i32,
28}
29
30impl<'r> FromRow<'r, PgRow> for TokenRow {
31    fn from_row(row: &'r PgRow) -> Result<Self, sqlx::Error> {
32        let address = row.try_get::<String, _>("address")?;
33        let name = row.try_get::<String, _>("name")?;
34        let symbol = row.try_get::<String, _>("symbol")?;
35        let decimals = row.try_get::<i32, _>("decimals")?;
36
37        let token = Self {
38            address,
39            name,
40            symbol,
41            decimals,
42        };
43        Ok(token)
44    }
45}
nautilus_blockchain/cache/rows.rs

nautilus_blockchain/cache/
rows.rs
