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Original file line number Diff line number Diff line change
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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.repository.AuthorRepository;
import guru.springframework.spring5webapp.repository.BookRepository;
import guru.springframework.spring5webapp.repository.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 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 {

Publisher publisher = new Publisher();
publisher.setName("P1");
publisher.setCity("C1");
publisher.setState("S1");

publisherRepository.save(publisher);

Author eric = new Author("Eric", "Evans");
Book book = new Book("Book_Title_1", "123456789");

eric.getBooks().add(book);
book.getAuthors().add(eric);
book.setPublisher(publisher);
publisher.getBooks().add(book);

System.out.println(book.getPublisher().getName());

authorRepository.save(eric);
bookRepository.save(book);
publisherRepository.save(publisher);

//---------------------------

Publisher publisher2 = new Publisher();
publisher.setName("P2");
publisher.setCity("C2");
publisher.setState("S2");

publisherRepository.save(publisher2);

Author auther1 = new Author("Eric", "Evans");
Book book1 = new Book("Book_Title_1", "123456789");

auther1.getBooks().add(book1);
book1.getAuthors().add(auther1);
book.setPublisher(publisher2);
publisher2.getBooks().add(book1);


authorRepository.save(auther1);
bookRepository.save(book1);
publisherRepository.save(publisher2);

System.out.println("Number of books loaded: "+bookRepository.count());
System.out.println("Number of authors loaded: "+authorRepository.count());
System.out.println("Number of publisher loaded: "+publisherRepository.count());
}
}
Original file line number Diff line number Diff line change
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package guru.springframework.spring5webapp.controller;

import guru.springframework.spring5webapp.repository.BookRepository;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class BookController {

private final BookRepository bookRepository;

public BookController(BookRepository bookRepository) {
this.bookRepository = bookRepository;
}

@RequestMapping("/books")
public String getBooks(Model model){
model.addAttribute("books", bookRepository.findAll());
return "list";
}
}
73 changes: 73 additions & 0 deletions src/main/java/guru/springframework/spring5webapp/model/Author.java
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package guru.springframework.spring5webapp.model;

import org.hibernate.annotations.GeneratorType;

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);
}

@Override
public int hashCode() {
return Objects.hash(id);
}
}
87 changes: 87 additions & 0 deletions src/main/java/guru/springframework/spring5webapp/model/Book.java
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@@ -0,0 +1,87 @@
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;

@ManyToMany
@JoinTable(name = "author_book",
joinColumns = @JoinColumn(name = "book_id"),
inverseJoinColumns = @JoinColumn(name = "author_id"))
private Set<Author> authors = new HashSet<>();


public Publisher getPublisher() {
return publisher;
}

public void setPublisher(Publisher publisher) {
this.publisher = publisher;
}

public Book() {
}

public Set<Author> getAuthors() {
return authors;
}

public void setAuthors(Set<Author> authors) {
this.authors = authors;
}

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;
}

@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);
}
}
Original file line number Diff line number Diff line change
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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 city;
private String state;

@OneToMany
@JoinColumn(name = "publisher_id")
private Set<Book> books = new HashSet<>();

public Publisher() {
}

public Publisher(String name, String city, String state, Set<Book> books) {
this.name = name;
this.city = city;
this.state = state;
this.books = books;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

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 Set<Book> getBooks() {
return books;
}

public void setBooks(Set<Book> books) {
this.books = books;
}

public void setId(Long id) {
this.id = id;
}

public Long getId() {
return id;
}

@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(id, publisher.id);
}

@Override
public int hashCode() {
return Objects.hash(id);
}
}
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package guru.springframework.spring5webapp.repository;

import guru.springframework.spring5webapp.model.Author;
import org.springframework.data.repository.CrudRepository;

public interface AuthorRepository extends CrudRepository<Author, Long> {
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
package guru.springframework.spring5webapp.repository;

import guru.springframework.spring5webapp.model.Book;
import org.springframework.data.repository.CrudRepository;

public interface BookRepository extends CrudRepository<Book, Long> {
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
package guru.springframework.spring5webapp.repository;

import guru.springframework.spring5webapp.model.Publisher;
import org.springframework.data.repository.CrudRepository;

public interface PublisherRepository extends CrudRepository<Publisher, Long> {
}
1 change: 1 addition & 0 deletions src/main/resources/application.properties
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@@ -0,0 +1 @@
spring.h2.console.enabled=true
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