Practice

pom.xml

@@ -5,19 +5,17 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.0.2</version>
+        <version>3.0.0-M3</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>guru.springframework</groupId>
     <artifactId>spring-6-webapp</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>spring-6-webapp</name>
     <description>Spring 6 Web App</description>
-
     <properties>
         <java.version>17</java.version>
     </properties>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -27,6 +25,11 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-thymeleaf</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
@@ -47,4 +50,25 @@
             </plugin>
         </plugins>
     </build>
+    <repositories>
+        <repository>
+            <id>spring-milestones</id>
+            <name>Spring Milestones</name>
+            <url>https://repo.spring.io/milestone</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
+    </repositories>
+    <pluginRepositories>
+        <pluginRepository>
+            <id>spring-milestones</id>
+            <name>Spring Milestones</name>
+            <url>https://repo.spring.io/milestone</url>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </pluginRepository>
+    </pluginRepositories>
+
 </project>

src/main/java/guru/springframework/spring6webapp/bootstrap/BootstrapData.java

@@ -0,0 +1,90 @@
+package guru.springframework.spring6webapp.bootstrap;
+
+import guru.springframework.spring6webapp.domain.Author;
+import guru.springframework.spring6webapp.domain.Book;
+import guru.springframework.spring6webapp.domain.Publisher;
+import guru.springframework.spring6webapp.repositories.AuthorRepository;
+import guru.springframework.spring6webapp.repositories.BookRepository;
+import guru.springframework.spring6webapp.repositories.PublisherRepository;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+/**
+ * Created by jt, Spring Framework Guru.
+ */
+@Component
+public class BootstrapData implements CommandLineRunner {
+
+    private final AuthorRepository authorRepository;
+    private final BookRepository bookRepository;
+    private final PublisherRepository publisherRepository;
+
+    public BootstrapData(AuthorRepository authorRepository, BookRepository bookRepository,
+                         PublisherRepository publisherRepository) {
+        this.authorRepository = authorRepository;
+        this.bookRepository = bookRepository;
+        this.publisherRepository = publisherRepository;
+    }
+
+    @Override
+    public void run(String... args) throws Exception {
+        Author eric = new Author();
+        eric.setFirstName("Eric");
+        eric.setLastName("Evans");
+
+        Book ddd = new Book();
+        ddd.setTitle("Domain Driven Design");
+        ddd.setIsbn("123456");
+
+        Author ericSaved = authorRepository.save(eric);
+        Book dddSaved = bookRepository.save(ddd);
+
+        Author rod = new Author();
+        rod.setFirstName("Rod");
+        rod.setLastName("Johnson");
+
+        Book noEJB = new Book();
+        noEJB.setTitle("J2EE Development without EJB");
+        noEJB.setIsbn("54757585");
+
+        Author rodSaved = authorRepository.save(rod);
+        Book noEJBSaved = bookRepository.save(noEJB);
+
+        ericSaved.getBooks().add(dddSaved);
+        rodSaved.getBooks().add(noEJBSaved);
+        dddSaved.getAuthors().add(ericSaved);
+        noEJBSaved.getAuthors().add(rodSaved);
+
+
+        Publisher publisher = new Publisher();
+        publisher.setPublisherName("My Publisher");
+        publisher.setAddress("123 Main");
+        Publisher savedPublisher = publisherRepository.save(publisher);
+
+        dddSaved.setPublisher(savedPublisher);
+        noEJBSaved.setPublisher(savedPublisher);
+
+        authorRepository.save(ericSaved);
+        authorRepository.save(rodSaved);
+        bookRepository.save(dddSaved);
+        bookRepository.save(noEJBSaved);
+
+        System.out.println("In Bootstrap");
+        System.out.println("Author Count: " + authorRepository.count());
+        System.out.println("Book Count: " + bookRepository.count());
+
+
+
+        System.out.println("Publisher Count: " + publisherRepository.count());
+    }
+}
+
+
+
+
+
+
+
+
+
+

src/main/java/guru/springframework/spring6webapp/controllers/AuthorController.java

@@ -0,0 +1,24 @@
+package guru.springframework.spring6webapp.controllers;
+
+import guru.springframework.spring6webapp.services.AuthorService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+/**
+ * Created by jt, Spring Framework Guru.
+ */
+@Controller
+public class AuthorController {
+
+    private final AuthorService authorService;
+
+    public AuthorController(AuthorService authorService) {
+        this.authorService = authorService;
+    }
+    @RequestMapping("/authors")
+    public String getAuthors(Model model){
+        model.addAttribute("authors",authorService.findAll());
+        return "authors";
+    }
+}

src/main/java/guru/springframework/spring6webapp/controllers/BookController.java

@@ -0,0 +1,28 @@
+package guru.springframework.spring6webapp.controllers;
+
+import guru.springframework.spring6webapp.services.BookService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+/**
+ * Created by jt, Spring Framework Guru.
+ */
+@Controller
+public class BookController {
+
+    private final BookService bookService;
+
+    public BookController(BookService bookService) {
+        this.bookService = bookService;
+    }
+
+    @RequestMapping("/books")
+    public String getBooks(Model model) {
+
+        model.addAttribute("books", bookService.findAll());
+
+        return "books";
+    }
+
+}

src/main/java/guru/springframework/spring6webapp/domain/Author.java

@@ -0,0 +1,90 @@
+package guru.springframework.spring6webapp.domain;
+
+import jakarta.persistence.*;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Created by jt, Spring Framework Guru.
+ */
+@Entity
+public class Author {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String firstName;
+    private String lastName;
+
+    @ManyToMany(mappedBy = "authors")
+    private Set<Book> books = new HashSet<>();
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public String toString() {
+        return "Author{" +
+                "id=" + id +
+                ", firstName='" + firstName + '\'' +
+                ", lastName='" + lastName + '\'' +
+                ", books=" + books +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof Author)) return false;
+
+        Author author = (Author) o;
+
+        return getId() != null ? getId().equals(author.getId()) : author.getId() == null;
+    }
+
+    @Override
+    public int hashCode() {
+        return getId() != null ? getId().hashCode() : 0;
+    }
+}
+
+
+
+
+
+
+
+
+
+
+

src/main/java/guru/springframework/spring6webapp/domain/Book.java

@@ -0,0 +1,100 @@
+package guru.springframework.spring6webapp.domain;
+
+import jakarta.persistence.*;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Created by jt, Spring Framework Guru.
+ */
+@Entity
+public class Book {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String title;
+    private String isbn;
+
+    @ManyToMany
+    @JoinTable(name = "author_book", joinColumns = @JoinColumn(name = "book_id"),
+        inverseJoinColumns = @JoinColumn(name = "author_id"))
+    private Set<Author> authors = new HashSet<>();
+
+    @ManyToOne
+    private Publisher publisher;
+
+    public Publisher getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(Publisher publisher) {
+        this.publisher = publisher;
+    }
+
+    public Set<Author> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<Author> authors) {
+        this.authors = authors;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "id=" + id +
+                ", title='" + title + '\'' +
+                ", isbn='" + isbn + '\'' +
+                ", authors=" + authors +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof Book)) return false;
+
+        Book book = (Book) o;
+
+        return getId() != null ? getId().equals(book.getId()) : book.getId() == null;
+    }
+
+    @Override
+    public int hashCode() {
+        return getId() != null ? getId().hashCode() : 0;
+    }
+}
+
+
+
+
+
+
+
+