89 lines
2.8 KiB
Java
89 lines
2.8 KiB
Java
package dev.dao;
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import dev.database.DatabaseConnection;
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import dev.model.Order;
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import java.sql.*;
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import java.util.ArrayList;
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import java.util.List;
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public class OrderDao {
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public int save(Order order) {
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String query = "INSERT INTO orders (user_id, order_date, total_price) VALUES (?, ?, ?)";
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try (Connection conn = DatabaseConnection.getConnection();
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PreparedStatement ps = conn.prepareStatement(query, Statement.RETURN_GENERATED_KEYS)) {
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ps.setInt(1, order.getUserId());
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ps.setTimestamp(2, order.getCreatedAt());
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ps.setDouble(3, order.getTotalPrice());
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int rowsAffected = ps.executeUpdate();
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if (rowsAffected == 1) {
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ResultSet rs = ps.getGeneratedKeys();
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if (rs.next()) {
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return rs.getInt(1);
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}
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}
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} catch (SQLException e) {
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System.err.println("Error saving order: " + e.getMessage());
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}
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return -1;
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}
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public List<Order> findByUserId(int userId) {
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String query = "SELECT uid, user_id, order_date, total_price FROM orders WHERE user_id = ?";
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List<Order> orders = new ArrayList<>();
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try (Connection conn = DatabaseConnection.getConnection();
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PreparedStatement ps = conn.prepareStatement(query)) {
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ps.setInt(1, userId);
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ResultSet rs = ps.executeQuery();
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while (rs.next()) {
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Order order = new Order();
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order.setId(rs.getInt("uid"));
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order.setUserId(rs.getInt("user_id"));
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order.setCreatedAt(rs.getTimestamp("order_date"));
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order.setTotalPrice(rs.getDouble("total_price"));
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orders.add(order);
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}
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return orders;
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} catch (SQLException e) {
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System.err.println("Error finding orders: " + e.getMessage());
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return new ArrayList<>();
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}
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}
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public Order findById(int orderId) {
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String query = "SELECT uid, user_id, order_date, total_price FROM orders WHERE uid = ?";
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try (Connection conn = DatabaseConnection.getConnection();
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PreparedStatement ps = conn.prepareStatement(query)) {
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ps.setInt(1, orderId);
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ResultSet rs = ps.executeQuery();
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if (rs.next()) {
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Order order = new Order();
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order.setId(rs.getInt("uid"));
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order.setUserId(rs.getInt("user_id"));
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order.setCreatedAt(rs.getTimestamp("order_date"));
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order.setTotalPrice(rs.getDouble("total_price"));
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return order;
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}
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} catch (SQLException e) {
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System.err.println("Error finding order by ID: " + e.getMessage());
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}
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return null;
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}
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} |