Homework 12

module01/pom.xml

@@ -11,6 +11,14 @@
     <packaging>jar</packaging>
 
     <name>module01</name>
+    <dependencies>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

module01/src/main/java/ru/sberbank/edu/GCD.java

@@ -0,0 +1,18 @@
+package ru.sberbank.edu;
+
+/**
+ * The Euclid's algorithm
+ * @author Aleksandr Kanarskiy
+ */
+public class GCD implements CommonDivisor{
+    @Override
+    public int getDivisor(int firstNumber, int secondNumber) {
+        while (secondNumber !=0) {
+            int tmp = firstNumber%secondNumber;
+            firstNumber = secondNumber;
+            secondNumber = tmp;
+        }
+        return firstNumber;
+    }
+}
+

module01/src/main/java/ru/sberbank/edu/GreetingImpl.java

@@ -0,0 +1,34 @@
+package ru.sberbank.edu;
+/**
+ * About myself
+ * @author Aleksandr Kanarskiy
+ */
+public class GreetingImpl implements Greeting{
+    public String getName() {
+        return name;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    private String name;
+    private String lastName;
+    private String hobby;
+
+    public GreetingImpl() {
+
+    }
+    public GreetingImpl(String name,String lastName,String hobby) {
+        this.hobby = hobby;
+        this.lastName = lastName;
+        this.name = name;
+
+    }
+
+    @Override
+    public String getBestHobby() {
+        return this.hobby;
+    }
+
+}

module01/src/test/java/ru/sberbank/edu/GCDTest.java

@@ -0,0 +1,19 @@
+package ru.sberbank.edu;
+
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class GCDTest {
+    @Test
+    void validateGCDTest(){
+        GCD gcd = new GCD();
+        assertAll(
+                ()->assertEquals(28,gcd.getDivisor(616,364)),
+                ()->assertEquals(123,gcd.getDivisor(123,0))
+        );
+    }
+
+}

module01/src/test/java/ru/sberbank/edu/GreetingImplTest.java

@@ -0,0 +1,20 @@
+package ru.sberbank.edu;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class GreetingImplTest {
+    @Test
+    void validateGettersTest() {
+        GreetingImpl greetingImpl = new GreetingImpl("Alesandr", "Kanarskiy", "Snorking");
+        assertAll(
+                () -> assertEquals("Alesandr", greetingImpl.getName()),
+                () -> assertEquals("Kanarskiy", greetingImpl.getLastName()),
+                () -> assertEquals("Snorking", greetingImpl.getBestHobby())
+        );
+
+    }
+
+}

module02/pom.xml

@@ -11,6 +11,10 @@
     <packaging>jar</packaging>
 
     <name>module02</name>
+    <dependencies>
+
+
+    </dependencies>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

module02/src/input.txt

@@ -0,0 +1,6 @@
+sdasdasd dsadas sadsdasd sdasda
+12sdsad dsad sd  sda   sad
+dsa s
+
+ asda
+ в ыф ы ы

module02/src/main/java/ru/sberbank/edu/App.java

@@ -1,13 +1,39 @@
 package ru.sberbank.edu;
 
+import java.io.IOException;
+import java.sql.SQLException;
+
 /**
  * Hello world!
  *
  */
-public class App 
-{
-    public static void main( String[] args )
-    {
-        System.out.println( "Hello World!" );
+public class App {
+    public static void main(String[] args) {
+        String inputFilePath = "module02/src/input.txt";
+        String outputFilePath = "module02/src/output.txt";
+
+        try {
+            // Создаем экземпляр FileResource с указанием пути к файлу входных данных
+            DataResource fileResource = new FileResource(inputFilePath);
+
+            // Создаем экземпляр DataResourceProcessor с передачей ему FileResource
+            DataResourceProcessor processor = new DataResourceProcessor(fileResource);
+
+            // Получаем статистику из ресурса
+            String statistics = processor.processResource();
+
+            // Записываем статистику в файл output.txt
+            fileResource.writeResultToFile(outputFilePath, statistics);
+
+            // Закрываем ресурс
+            fileResource.close();
+
+            System.out.println("Статистика записана в файл " + outputFilePath);
+        } catch (IOException e) {
+            System.out.println("Ошибка при работе с файлом: " + e.getMessage());
+        } catch (SQLException e) {
+            System.out.println("Ошибка при работе с базой данных: " + e.getMessage());
+        }
     }
+
 }

module02/src/main/java/ru/sberbank/edu/DataResource.java

@@ -0,0 +1,11 @@
+package ru.sberbank.edu;
+
+import java.io.IOException;
+import java.sql.SQLException;
+
+public interface DataResource {
+    String readData() throws IOException, SQLException;
+    void close() throws IOException, SQLException;
+    void writeResultToFile(String outputFilePath, String statistics) throws IOException;
+
+}

module02/src/main/java/ru/sberbank/edu/DataResourceProcessor.java

@@ -0,0 +1,41 @@
+package ru.sberbank.edu;
+
+import java.io.IOException;
+import java.sql.SQLException;
+
+public class DataResourceProcessor {
+    private final DataResource resource;
+
+    public DataResourceProcessor(DataResource resource) {
+        this.resource = resource;
+    }
+
+    public String processResource() throws IOException, SQLException {
+        int lineCount = 0;
+        String longestLine = "";
+        int totalSpaces = 0;
+
+        String line;
+        while ((line = resource.readData()) != null) {
+            lineCount++;
+            if (line.length() > longestLine.length()) {
+                longestLine = line;
+            }
+            totalSpaces += countSpaces(line);
+        }
+
+        resource.close();
+        return String.format("Line count: %s, longest line: %s, total spaces: %s",lineCount,longestLine,totalSpaces);
+
+    }
+
+    int countSpaces(String line) {
+        int totalSpaces = 0;
+        for (char c : line.toCharArray()) {
+            if (c == ' ') {
+                totalSpaces++;
+            }
+        }
+        return totalSpaces;
+    }
+}

module02/src/main/java/ru/sberbank/edu/DatabaseResource.java

@@ -0,0 +1,32 @@
+package ru.sberbank.edu;
+
+import java.sql.*;
+
+public class DatabaseResource extends OutputData implements DataResource {
+    private final Connection connection;
+    private final Statement statement;
+    private final ResultSet resultSet;
+
+    public DatabaseResource(String url, String user, String password) throws SQLException {
+        connection = DriverManager.getConnection(url, user, password);
+        statement = connection.createStatement();
+        resultSet = statement.executeQuery("SELECT * FROM my_table");
+    }
+
+    @Override
+    public String readData() throws SQLException {
+        if (resultSet.next()) {
+            return resultSet.getString("data");
+        }
+        return null;
+    }
+
+    @Override
+    public void close() throws SQLException {
+        resultSet.close();
+        statement.close();
+        connection.close();
+    }
+
+
+}

module02/src/main/java/ru/sberbank/edu/FileResource.java

@@ -0,0 +1,25 @@
+package ru.sberbank.edu;
+
+import java.io.*;
+
+public class FileResource extends OutputData implements DataResource {
+    private final BufferedReader reader;
+
+    private final String filePath;
+
+    public FileResource(String filePath) throws IOException {
+        reader = new BufferedReader(new FileReader(filePath));
+        this.filePath = filePath;
+    }
+
+    @Override
+    public String readData() throws IOException {
+        validateFile(filePath);
+        return reader.readLine();
+    }
+
+    @Override
+    public void close() throws IOException {
+        reader.close();
+    }
+}

module02/src/main/java/ru/sberbank/edu/OutputData.java

@@ -0,0 +1,35 @@
+package ru.sberbank.edu;
+
+import java.io.*;
+import java.sql.SQLException;
+
+
+public  abstract class OutputData implements DataResource{
+    @Override
+    public String readData() throws IOException, SQLException {
+        return null;
+    }
+
+    @Override
+    public void close() throws IOException, SQLException {
+
+    }
+    public void writeResultToFile(String filePath, String content) throws IOException {
+        validateFile(filePath);
+        try( BufferedWriter writer = new BufferedWriter(new FileWriter(filePath))){
+            writer.write(content);
+        }
+
+
+    }
+    protected void validateFile(String filePath) throws FileNotFoundException {
+        File file = new File(filePath);
+        if (!file.exists()) {
+            throw new FileNotFoundException("File does not exist.");
+        }
+
+        if (!file.isFile()) {
+            throw new IllegalArgumentException("Specified path does not lead to a file.");
+        }
+    }
+}

module02/src/output.txt

@@ -0,0 +1 @@
+Line count: 6, longest line: sdasdasd dsadas sadsdasd sdasda, total spaces: 16