first commit

pom.xml

@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.1.2.RELEASE</version>
+		<version>3.0.2</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 

src/main/java/guru/springframework/spring5webapp/bootstrap/BootStrapData.java

@@ -0,0 +1,43 @@
+package guru.springframework.spring5webapp.bootstrap;
+
+import guru.springframework.spring5webapp.domain.Author;
+import guru.springframework.spring5webapp.domain.Book;
+import guru.springframework.spring5webapp.repositories.AuthorRepository;
+import guru.springframework.spring5webapp.repositories.BookRepository;
+import guru.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+@Component
+public class BootStrapData implements CommandlineRunner {
+
+    private final AuthorRepository authorRepository;
+    private final BookRepository bookRepository;
+
+    public BootStrapData(AuthorRepository authorRepository, BookRepository bookRepository) {
+        this.authorRepository = authorRepository;
+        this.bookRepository = bookRepository;
+    }
+
+    @Override
+    public void run(String... args) throws Exception {
+
+
+        Author eric = new Author("Eric","Evans");
+        Book ddd = new Book("Domain Driven Design","123123");
+        eric.getBooks().add(ddd);
+        ddd.getAuthors().add(eric);
+
+        authorRepository.save(eric);
+        bookRepository.save(ddd);
+
+        Author rod = new Author("Rod","Johnson");
+        Book noEJB = new Book("J2EE Developent without EJB","3939459469");
+        rod.getBooks().add(noEJB);
+        noEJB.getAuthors().add(rod);
+
+        System.out.println("Started in Bootstrap");
+        System.out.println("Number of Books: " + bookRepository.count());
+
+    }
+
+}

src/main/java/guru/springframework/spring5webapp/domain/Author.java

@@ -0,0 +1,80 @@
+package guru.springframework.spring5webapp.domain;
+//import javax.persistence.*;
+
+import javax.persistence.*;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+@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 Author() {
+    }
+
+    public Author(String firstName, String lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+
+    }
+
+    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;
+    }
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
+
+    @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 == null || getClass() != o.getClass()) return false;
+        Author author = (Author) o;
+        return Objects.equals(id, author.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+}

src/main/java/guru/springframework/spring5webapp/domain/Book.java

@@ -0,0 +1,84 @@
+package guru.springframework.spring5webapp.domain;
+
+import javax.persistence.*;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+@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<>();;
+
+    public Book() {
+
+    }
+
+    public Book(String title, String isbn) {
+        this.title = title;
+        this.isbn = isbn;
+    }
+
+    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;
+    }
+
+    public Set<Author> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<Author> authors) {
+        this.authors = authors;
+    }
+
+    @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 == null || getClass() != o.getClass()) return false;
+        Book book = (Book) o;
+        return Objects.equals(id, book.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+}

src/main/java/guru/springframework/spring5webapp/repositories/AuthorRepository.java

@@ -0,0 +1,7 @@
+package guru.springframework.spring5webapp.repositories;
+import guru.springframework.spring5webapp.domain.Author;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface AuthorRepository extends CrudRepository<Author, Long> {
+}

src/main/java/guru/springframework/spring5webapp/repositories/BookRepository.java

@@ -0,0 +1,6 @@
+package guru.springframework.spring5webapp.repositories;
+import guru.springframework.spring5webapp.domain.Book;
+import org.springframework.data.repository.CrudRepository;
+public interface BookRepository extends CrudRepository<Book, Long> {
+
+}