Merge pull request #1 from BlueVioletTeti/development

created Book entity, its service and repository

pom.xml

@@ -28,6 +28,35 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>com.mysql</groupId>
+			<artifactId>mysql-connector-j</artifactId>
+			<version>8.1.0</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+			<version>3.0.6</version>
+		</dependency>
+
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 
 	<build>

src/main/java/mate/academy/bookstore/BookstoreApplication.java

@@ -1,13 +1,35 @@
 package mate.academy.bookstore;
 
+import java.math.BigDecimal;
+import lombok.RequiredArgsConstructor;
+import mate.academy.bookstore.model.Book;
+import mate.academy.bookstore.service.BookService;
+import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
 
+@RequiredArgsConstructor
 @SpringBootApplication
 public class BookstoreApplication {
+    private final BookService bookService;
 
-	public static void main(String[] args) {
-		SpringApplication.run(BookstoreApplication.class, args);
-	}
+    public static void main(String[] args) {
+        SpringApplication.run(BookstoreApplication.class, args);
+    }
 
+    @Bean
+    public CommandLineRunner commandLineRunner() {
+        return args -> {
+            Book book = new Book();
+            book.setTitle("Book title");
+            book.setAuthor("Book author");
+            book.setIsbn("unique isbn");
+            book.setPrice(BigDecimal.valueOf(700));
+
+            bookService.save(book);
+
+            System.out.println(bookService.findAll());
+        };
+    }
 }

src/main/java/mate/academy/bookstore/model/Book.java

@@ -0,0 +1,30 @@
+package mate.academy.bookstore.model;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import java.math.BigDecimal;
+import lombok.Data;
+
+@Entity
+@Data
+@Table(name = "book")
+public class Book {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    @Column(nullable = false)
+    private String title;
+    @Column(nullable = false)
+    private String author;
+    @Column(nullable = false, unique = true)
+    private String isbn;
+    @Column(nullable = false)
+    private BigDecimal price;
+    private String description;
+    @Column(name = "cover_image")
+    private String coverImage;
+}

src/main/java/mate/academy/bookstore/repository/BookRepository.java

@@ -0,0 +1,10 @@
+package mate.academy.bookstore.repository;
+
+import java.util.List;
+import mate.academy.bookstore.model.Book;
+
+public interface BookRepository {
+    Book save(Book book);
+
+    List<Book> findAll();
+}

src/main/java/mate/academy/bookstore/repository/BookRepositoryImpl.java

@@ -0,0 +1,55 @@
+package mate.academy.bookstore.repository;
+
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.EntityManagerFactory;
+import jakarta.persistence.EntityTransaction;
+import jakarta.persistence.criteria.CriteriaQuery;
+import java.util.List;
+import mate.academy.bookstore.model.Book;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class BookRepositoryImpl implements BookRepository {
+    private final EntityManagerFactory entityManagerFactory;
+
+    @Autowired
+    public BookRepositoryImpl(EntityManagerFactory entityManagerFactory) {
+        this.entityManagerFactory = entityManagerFactory;
+    }
+
+    @Override
+    public Book save(Book book) {
+        EntityManager entityManager = null;
+        EntityTransaction transaction = null;
+        try {
+            entityManager = entityManagerFactory.createEntityManager();
+            transaction = entityManager.getTransaction();
+            transaction.begin();
+            entityManager.persist(book);
+            transaction.commit();
+        } catch (Exception e) {
+            if (transaction != null) {
+                transaction.rollback();
+                throw new RuntimeException("Can't save a book: " + book, e);
+            }
+        } finally {
+            if (entityManager != null) {
+                entityManager.close();
+            }
+        }
+        return book;
+    }
+
+    @Override
+    public List<Book> findAll() {
+        try (EntityManager entityManager = entityManagerFactory.createEntityManager()) {
+            CriteriaQuery<Book> criteriaQuery = entityManager.getCriteriaBuilder()
+                    .createQuery(Book.class);
+            criteriaQuery.from(Book.class);
+            return entityManager.createQuery(criteriaQuery).getResultList();
+        } catch (Exception e) {
+            throw new RuntimeException("Can't find all books", e);
+        }
+    }
+}

src/main/java/mate/academy/bookstore/service/BookService.java

@@ -0,0 +1,10 @@
+package mate.academy.bookstore.service;
+
+import java.util.List;
+import mate.academy.bookstore.model.Book;
+
+public interface BookService {
+    Book save(Book book);
+
+    List<Book> findAll();
+}

src/main/java/mate/academy/bookstore/service/BookServiceImpl.java

@@ -0,0 +1,23 @@
+package mate.academy.bookstore.service;
+
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import mate.academy.bookstore.model.Book;
+import mate.academy.bookstore.repository.BookRepository;
+import org.springframework.stereotype.Service;
+
+@RequiredArgsConstructor
+@Service
+public class BookServiceImpl implements BookService {
+    private final BookRepository bookRepository;
+
+    @Override
+    public Book save(Book book) {
+        return bookRepository.save(book);
+    }
+
+    @Override
+    public List<Book> findAll() {
+        return bookRepository.findAll();
+    }
+}

src/main/resources/application.properties

@@ -1 +1,7 @@
+spring.datasource.url=jdbc:mysql://localhost:3306/books_app?serverTimezone=UTC
+spring.datasource.username=user
+spring.datasource.password=password
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 
+spring.jpa.hibernate.ddl-auto=create-drop
+spring.jpa.show-sql=true

src/test/resources/application.properties

@@ -0,0 +1,5 @@
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect