класс для замера времени
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parap
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src/main/java/org/dbms/data/DataPerform.java
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215
src/main/java/org/dbms/data/DataPerform.java
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package org.dbms.data;
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import org.dbms.dto.CreateOrderDTO;
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import org.dbms.models.Car;
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import org.dbms.models.Client;
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import org.dbms.models.Driver;
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import org.dbms.models.Parking;
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import org.dbms.service.OrderService;
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import org.dbms.storageContracts.ICarStorage;
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import org.dbms.storageContracts.IClientStorage;
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import org.dbms.storageContracts.IDriverStorage;
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import org.dbms.storageContracts.IParkingStorage;
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import org.springframework.stereotype.Service;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import java.util.Random;
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@Service
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public class DataPerform {
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private Connection connection;
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private IParkingStorage parkingStorage;
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private ICarStorage carStorage;
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private static String surnames[] = {"Иванов", "Петров", "Сидоров", "Александров", "Панов", "Ежов", "Зотов", "Котов", "зощенков"};
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private static String initials[] = {"А", "Б", "В", "Г", "Д", "Е", "И", "К", "Л", "М", "Н", "О", "П", "С"};
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private static String cities[] = {"Ульяновск", "Самара", "Москва", "Уфа", "Казань", "Нижний новгород", "Санкт петербург"};
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private static String streets[] = {"пр. Нариманова", "ул. Ленина", "ул. Карла Маркса", "ул. Радищева", "ул. Гагарина"};
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private final static String readRecords;
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private final static String readRecordById;
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private final static String insertRecord;
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private final static String updateRecord;
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private final static String deleteRecord;
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static
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{
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readRecords = "SELECT id, model, year, cost, parkingId FROM cars";
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readRecordById = new StringBuilder()
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.append("SELECT id, model, year, cost, parkingId FROM cars")
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.append("\n")
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.append("WHERE id = ?").toString();
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updateRecord = new StringBuilder("UPDATE cars\n")
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.append("UPDATE cars\n")
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.append("SET model = ?,\n")
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.append("year = ?,\n")
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.append("cost = ?,\n")
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.append("parkingid = ?\n")
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.append("WHERE id = ?").toString();
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insertRecord = "INSERT INTO cars (model, year, cost, parkingId) VALUES(?, ?, ?, ?)";
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deleteRecord = "DELETE FROM cars WHERE id = ?";
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}
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public DataPerform(Connection connection, IParkingStorage parkingStorage, ICarStorage carStorage) {
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this.connection = connection;
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this.parkingStorage = parkingStorage;
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this.carStorage = carStorage;
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}
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private String generateStr() {
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Random rnd = new Random();
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String res = "";
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int len = rnd.nextInt(5) + 3;
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for(int i = 0; i < len; ++i) {
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char ch = (char)(rnd.nextInt(25) + 'A');
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res += ch;
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}
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return res;
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}
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private String generateName() {
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Random rnd = new Random();
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return surnames[rnd.nextInt(9)] + " " + initials[rnd.nextInt(14)] + ". " + initials[rnd.nextInt(14)];
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}
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private Date generateDate() {
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Random rnd = new Random();
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int year = rnd.nextInt(21) + 100;
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int month = rnd.nextInt(12);
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int day = rnd.nextInt(26);
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Date date = new Date();
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date.setYear(year);
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date.setMonth(month);
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date.setDate(day);
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return date;
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}
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private String generateAddress() {
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Random rnd = new Random();
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return cities[rnd.nextInt(cities.length)] + " " + streets[rnd.nextInt(streets.length)] + " д. " + rnd.nextInt(25) + 1;
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}
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public long select() {
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long res = 0;
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try {
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PreparedStatement preparedStatement = connection.prepareStatement(readRecords);
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long start = System.currentTimeMillis();
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ResultSet resultSet = preparedStatement.executeQuery();
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long end = System.currentTimeMillis();
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res += end - start;
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preparedStatement.close();
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} catch (SQLException e) {
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e.printStackTrace();
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}
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return res;
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}
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public long insert(int count) {
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try {
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PreparedStatement preparedStatement = connection.prepareStatement("DELETE FROM cars");
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preparedStatement.executeUpdate();
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preparedStatement.close();
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} catch(Exception ex) {
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}
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List<Parking> parkings = parkingStorage.readAll();
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Random rnd = new Random();
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String models[] = {"Газель", "Камаз", "Volvo", "Трактор"};
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long res = 0;
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for(int i = 0; i < count; ++i) {
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int modelIndex = rnd.nextInt(4);
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double cost = rnd.nextDouble(400000) + 50000;
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Car car = new Car(models[modelIndex], generateDate(), cost, parkings.get(rnd.nextInt(parkings.size())));
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try {
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PreparedStatement preparedStatement = connection.prepareStatement(insertRecord);
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preparedStatement.setString(1, car.getModel());
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preparedStatement.setDate(2, new java.sql.Date(car.getYear().getTime()));
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preparedStatement.setDouble(3, car.getCost());
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preparedStatement.setLong(4, car.getParking().getId());
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long start = System.currentTimeMillis();
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preparedStatement.executeUpdate();
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long end = System.currentTimeMillis();
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res += end - start;
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preparedStatement.close();
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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return res;
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}
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public long update(int count) {
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List<Car> cars = carStorage.readAll();
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List<Parking> parkings = parkingStorage.readAll();
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Random rnd = new Random();
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String models[] = {"Газель", "Камаз", "Volvo", "Трактор"};
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long res = 0;
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for(int i = 0; i < count; ++i) {
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int modelIndex = rnd.nextInt(4);
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double cost = rnd.nextDouble(400000) + 50000;
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Car car = new Car(models[modelIndex], generateDate(), cost, parkings.get(rnd.nextInt(parkings.size())));
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try {
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PreparedStatement preparedStatement = connection.prepareStatement(updateRecord);
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preparedStatement.setString(1, car.getModel());
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preparedStatement.setDate(2, new java.sql.Date(car.getYear().getTime()));
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preparedStatement.setDouble(3, car.getCost());
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preparedStatement.setLong(4, car.getParking().getId());
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preparedStatement.setLong(5, cars.get(0).getId());
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long start = System.nanoTime();
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preparedStatement.executeUpdate();
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long end = System.nanoTime();
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res += end - start;
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} catch (Exception ex) {
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}
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}
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return res;
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}
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public long delete() {
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long res = 0;
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try {
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PreparedStatement preparedStatement = connection.prepareStatement("DELETE FROM cars");
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long start = System.currentTimeMillis();
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preparedStatement.executeUpdate();
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long end = System.currentTimeMillis();
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res = end - start;
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preparedStatement.close();
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} catch(Exception ex) {
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}
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return res;
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}
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}
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