From 7be5686094ae0df76c2ac61462b3ea1701e6acc6 Mon Sep 17 00:00:00 2001 From: parap Date: Mon, 22 May 2023 03:44:25 +0400 Subject: [PATCH] =?UTF-8?q?=D0=BA=D0=BB=D0=B0=D1=81=D1=81=20=D0=B4=D0=BB?= =?UTF-8?q?=D1=8F=20=D0=B7=D0=B0=D0=BC=D0=B5=D1=80=D0=B0=20=D0=B2=D1=80?= =?UTF-8?q?=D0=B5=D0=BC=D0=B5=D0=BD=D0=B8?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/main/java/org/dbms/data/DataPerform.java | 215 +++++++++++++++++++ 1 file changed, 215 insertions(+) create mode 100644 src/main/java/org/dbms/data/DataPerform.java diff --git a/src/main/java/org/dbms/data/DataPerform.java b/src/main/java/org/dbms/data/DataPerform.java new file mode 100644 index 0000000..5744e54 --- /dev/null +++ b/src/main/java/org/dbms/data/DataPerform.java @@ -0,0 +1,215 @@ +package org.dbms.data; + +import org.dbms.dto.CreateOrderDTO; +import org.dbms.models.Car; +import org.dbms.models.Client; +import org.dbms.models.Driver; +import org.dbms.models.Parking; +import org.dbms.service.OrderService; +import org.dbms.storageContracts.ICarStorage; +import org.dbms.storageContracts.IClientStorage; +import org.dbms.storageContracts.IDriverStorage; +import org.dbms.storageContracts.IParkingStorage; +import org.springframework.stereotype.Service; + +import java.sql.Connection; +import java.sql.PreparedStatement; +import java.sql.ResultSet; +import java.sql.SQLException; +import java.util.ArrayList; +import java.util.Date; +import java.util.List; +import java.util.Random; + +@Service +public class DataPerform { + private Connection connection; + private IParkingStorage parkingStorage; + private ICarStorage carStorage; + + + private static String surnames[] = {"Иванов", "Петров", "Сидоров", "Александров", "Панов", "Ежов", "Зотов", "Котов", "зощенков"}; + private static String initials[] = {"А", "Б", "В", "Г", "Д", "Е", "И", "К", "Л", "М", "Н", "О", "П", "С"}; + + private static String cities[] = {"Ульяновск", "Самара", "Москва", "Уфа", "Казань", "Нижний новгород", "Санкт петербург"}; + private static String streets[] = {"пр. Нариманова", "ул. Ленина", "ул. Карла Маркса", "ул. Радищева", "ул. Гагарина"}; + + private final static String readRecords; + private final static String readRecordById; + private final static String insertRecord; + private final static String updateRecord; + private final static String deleteRecord; + + static + { + readRecords = "SELECT id, model, year, cost, parkingId FROM cars"; + readRecordById = new StringBuilder() + .append("SELECT id, model, year, cost, parkingId FROM cars") + .append("\n") + .append("WHERE id = ?").toString(); + updateRecord = new StringBuilder("UPDATE cars\n") + .append("UPDATE cars\n") + .append("SET model = ?,\n") + .append("year = ?,\n") + .append("cost = ?,\n") + .append("parkingid = ?\n") + .append("WHERE id = ?").toString(); + + insertRecord = "INSERT INTO cars (model, year, cost, parkingId) VALUES(?, ?, ?, ?)"; + deleteRecord = "DELETE FROM cars WHERE id = ?"; + } + + public DataPerform(Connection connection, IParkingStorage parkingStorage, ICarStorage carStorage) { + this.connection = connection; + this.parkingStorage = parkingStorage; + this.carStorage = carStorage; + } + + private String generateStr() { + Random rnd = new Random(); + String res = ""; + + int len = rnd.nextInt(5) + 3; + for(int i = 0; i < len; ++i) { + char ch = (char)(rnd.nextInt(25) + 'A'); + res += ch; + } + + return res; + } + + private String generateName() { + Random rnd = new Random(); + return surnames[rnd.nextInt(9)] + " " + initials[rnd.nextInt(14)] + ". " + initials[rnd.nextInt(14)]; + } + + private Date generateDate() { + Random rnd = new Random(); + int year = rnd.nextInt(21) + 100; + int month = rnd.nextInt(12); + int day = rnd.nextInt(26); + + Date date = new Date(); + date.setYear(year); + date.setMonth(month); + date.setDate(day); + + return date; + } + + private String generateAddress() { + Random rnd = new Random(); + return cities[rnd.nextInt(cities.length)] + " " + streets[rnd.nextInt(streets.length)] + " д. " + rnd.nextInt(25) + 1; + } + + public long select() { + long res = 0; + try { + PreparedStatement preparedStatement = connection.prepareStatement(readRecords); + + long start = System.currentTimeMillis(); + ResultSet resultSet = preparedStatement.executeQuery(); + long end = System.currentTimeMillis(); + res += end - start; + preparedStatement.close(); + + } catch (SQLException e) { + e.printStackTrace(); + } + + return res; + } + + public long insert(int count) { + + try { + PreparedStatement preparedStatement = connection.prepareStatement("DELETE FROM cars"); + preparedStatement.executeUpdate(); + preparedStatement.close(); + } catch(Exception ex) { + + } + + List parkings = parkingStorage.readAll(); + Random rnd = new Random(); + String models[] = {"Газель", "Камаз", "Volvo", "Трактор"}; + + long res = 0; + + for(int i = 0; i < count; ++i) { + int modelIndex = rnd.nextInt(4); + double cost = rnd.nextDouble(400000) + 50000; + + Car car = new Car(models[modelIndex], generateDate(), cost, parkings.get(rnd.nextInt(parkings.size()))); + + try { + PreparedStatement preparedStatement = connection.prepareStatement(insertRecord); + + preparedStatement.setString(1, car.getModel()); + preparedStatement.setDate(2, new java.sql.Date(car.getYear().getTime())); + preparedStatement.setDouble(3, car.getCost()); + preparedStatement.setLong(4, car.getParking().getId()); + + long start = System.currentTimeMillis(); + preparedStatement.executeUpdate(); + long end = System.currentTimeMillis(); + res += end - start; + preparedStatement.close(); + } catch (SQLException e) { + e.printStackTrace(); + } + } + + return res; + } + + public long update(int count) { + List cars = carStorage.readAll(); + List parkings = parkingStorage.readAll(); + Random rnd = new Random(); + String models[] = {"Газель", "Камаз", "Volvo", "Трактор"}; + + long res = 0; + for(int i = 0; i < count; ++i) { + int modelIndex = rnd.nextInt(4); + double cost = rnd.nextDouble(400000) + 50000; + + Car car = new Car(models[modelIndex], generateDate(), cost, parkings.get(rnd.nextInt(parkings.size()))); + + try { + PreparedStatement preparedStatement = connection.prepareStatement(updateRecord); + + preparedStatement.setString(1, car.getModel()); + preparedStatement.setDate(2, new java.sql.Date(car.getYear().getTime())); + preparedStatement.setDouble(3, car.getCost()); + preparedStatement.setLong(4, car.getParking().getId()); + preparedStatement.setLong(5, cars.get(0).getId()); + + long start = System.nanoTime(); + preparedStatement.executeUpdate(); + long end = System.nanoTime(); + res += end - start; + + } catch (Exception ex) { + } + + } + return res; + } + + public long delete() { + long res = 0; + try { + PreparedStatement preparedStatement = connection.prepareStatement("DELETE FROM cars"); + long start = System.currentTimeMillis(); + preparedStatement.executeUpdate(); + long end = System.currentTimeMillis(); + res = end - start; + preparedStatement.close(); + } catch(Exception ex) { + + } + + return res; + } +}