spring boot h2-console

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

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+package guru.springframework.spring5webapp.bootstrap;
+
+import guru.springframework.spring5webapp.repositories.AuthorRepository;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class AuthorController {
+    private final AuthorRepository authorRepository;
+
+    public AuthorController(AuthorRepository authorRepository) {
+        this.authorRepository = authorRepository;
+    }
+    @RequestMapping("/authors")
+            public String getAuthors(Model model){
+        model.addAttribute("authors",authorRepository.findAll());
+        return"authors/authorsList";
+            }
+}

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

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+package guru.springframework.spring5webapp.bootstrap;
+
+import guru.springframework.spring5webapp.model.Author;
+import guru.springframework.spring5webapp.model.Book;
+import guru.springframework.spring5webapp.model.Publisher;
+import guru.springframework.spring5webapp.repositories.AuthorRepository;
+import guru.springframework.spring5webapp.repositories.BookRepository;
+import guru.springframework.spring5webapp.repositories.PublisherRepository;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.stereotype.Component;
+
+
+@Component
+public class BootStrapData implements CommandLineRunner {
+   private final AuthorRepository authorRepository;
+   private final BookRepository bookRepository;
+    private 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 author1 = new Author("Ahmed", "Yamir");
+        Book book1 = new Book("Spring boot", "12QS");
+
+        author1.getBooks().add(book1);
+        book1.getAuthors().add(author1);
+
+        authorRepository.save(author1);
+        bookRepository.save(book1);
+
+        Author author2 = new Author("Taha", "Salhi");
+        Book book2 = new Book("C++", "AZ321GFF");
+
+        author2.getBooks().add(book2);
+        book2.getAuthors().add(author2);
+
+        authorRepository.save(author2);
+        bookRepository.save(book2);
+
+
+
+        Publisher publisger=new Publisher("Publisger 1","AddressL1","Ottawa","Ontario","K3E 6T9");
+        book1.setPublisher(publisger);
+        publisger.getBooks().add(book1);
+
+        book2.setPublisher(publisger);
+        publisger.getBooks().add(book2);
+
+        publisherRepository.save(publisger);
+
+        System.out.println("Number of book here: " + bookRepository.count());
+        System.out.println("Number of author here: " + authorRepository.count());
+        System.out.println("Number of publisher here: " +  publisherRepository.count());
+
+    }
+}

src/main/java/guru/springframework/spring5webapp/controllers/BookControllers.java

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+package guru.springframework.spring5webapp.controllers;
+
+import guru.springframework.spring5webapp.repositories.BookRepository;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class BookControllers {
+
+    private final BookRepository bookRepository;
+
+    public BookControllers(BookRepository bookRepository) {
+        this.bookRepository = bookRepository;
+    }
+
+    @RequestMapping("/books")
+    public String getBooks(Model model){
+        model.addAttribute("books",bookRepository.findAll());
+        return "books/list";
+    }
+}

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

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+package guru.springframework.spring5webapp.model;
+
+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 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) && Objects.equals(firstName, author.firstName) && Objects.equals(lastName, author.lastName) && Objects.equals(books, author.books);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Author{" +
+                "id=" + id +
+                ", firstName='" + firstName + '\'' +
+                ", lastName='" + lastName + '\'' +
+                ", books=" + books +
+                '}';
+    }
+}
+

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

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+package guru.springframework.spring5webapp.model;
+
+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;
+    @ManyToOne
+    private Publisher publisher;
+
+    public Publisher getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(Publisher publisher) {
+        this.publisher = publisher;
+    }
+
+    @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 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);
+    }
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "id=" + id +
+                ", title='" + title + '\'' +
+                ", isbn='" + isbn + '\'' +
+                ", authors=" + authors +
+                '}';
+    }
+}

src/main/java/guru/springframework/spring5webapp/model/Publisher.java

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+package guru.springframework.spring5webapp.model;
+
+import javax.persistence.*;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+@Entity
+public class Publisher {
+    @Id
+    @GeneratedValue(strategy= GenerationType.AUTO)
+    private Long id;
+
+    private String name;
+    private String AddressLine1;
+    private String city;
+    private String state;
+    private String zip;
+    @OneToMany
+    @JoinColumn(name="publisher_id")
+    private Set<Book> books=new HashSet<>();
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
+
+    public Publisher() {
+    }
+
+    public Publisher(String name, String addressLine1, String city, String state, String zip) {
+        this.name = name;
+        AddressLine1 = addressLine1;
+        this.city = city;
+        this.state = state;
+        this.zip = zip;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getAddressLine1() {
+        return AddressLine1;
+    }
+
+    public void setAddressLine1(String addressLine1) {
+        AddressLine1 = addressLine1;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public String getState() {
+        return state;
+    }
+
+    public void setState(String state) {
+        this.state = state;
+    }
+
+    public String getZip() {
+        return zip;
+    }
+
+    public void setZip(String zip) {
+        this.zip = zip;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Publisher publisher = (Publisher) o;
+        return Objects.equals(name, publisher.name) && Objects.equals(AddressLine1, publisher.AddressLine1) && Objects.equals(city, publisher.city) && Objects.equals(state, publisher.state) && Objects.equals(zip, publisher.zip);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, AddressLine1, city, state, zip);
+    }
+
+    @Override
+    public String toString() {
+        return "Puplisher{" +
+                "name='" + name + '\'' +
+                ", AddressLine1='" + AddressLine1 + '\'' +
+                ", city='" + city + '\'' +
+                ", state='" + state + '\'' +
+                ", zip='" + zip + '\'' +
+                '}';
+    }
+}