1 jpa entities

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

@@ -0,0 +1,87 @@
+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;
+
+@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("54767685");
+
+        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("myPublisher");
+        publisher.setAddress("streetStreet");
+        publisher.setCity("City");
+        publisher.setState("BW");
+        publisher.setZip("12345");
+
+        Publisher savedPublisher =  publisherRepository.save(publisher);
+        authorRepository.save(ericSaved);
+        authorRepository.save(rodSaved);
+
+        ddd.setPublisher(savedPublisher);
+        noEJB.setPublisher(savedPublisher);
+
+        authorRepository.save(ericSaved);
+        authorRepository.save(rodSaved);
+        bookRepository.save(dddSaved);
+        bookRepository.save(noEJB);
+
+
+
+        System.out.println("In Bootstrap");
+        System.out.println("Publisher Count: " + publisherRepository.count());
+        System.out.println("Author Count: " + authorRepository.count());
+        System.out.println("Book Count: " + bookRepository.count());
+
+
+
+
+    }
+}

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

@@ -1,9 +1,10 @@
 package guru.springframework.spring6webapp.domain;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import jakarta.persistence.*;
+
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
 
 /**
  * Created by jt, Spring Framework Guru.
@@ -17,6 +18,17 @@ public class Author {
     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;
     }
@@ -40,4 +52,29 @@ public String getLastName() {
     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 == null || getClass() != o.getClass()) return false;
+
+        Author author = (Author) o;
+
+        return Objects.equals(id, author.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return id != null ? id.hashCode() : 0;
+    }
 }

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

@@ -1,9 +1,10 @@
 package guru.springframework.spring6webapp.domain;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import jakarta.persistence.*;
+
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
 
 /**
  * Created by jt, Spring Framework Guru.
@@ -17,6 +18,30 @@ public class Book {
     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;
     }
@@ -40,4 +65,29 @@ public String getIsbn() {
     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 == null || getClass() != o.getClass()) return false;
+
+        Book book = (Book) o;
+
+        return Objects.equals(id, book.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return id != null ? id.hashCode() : 0;
+    }
 }

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

@@ -0,0 +1,107 @@
+package guru.springframework.spring6webapp.domain;
+
+import jakarta.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 publisherName;
+    private  String address; // street name
+    private String city;
+    private String state;
+    private String zip;
+
+
+    @OneToMany(mappedBy = "publisher")
+    private Set<Book> books;
+
+    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 getPublisherName() {
+        return publisherName;
+    }
+
+    public void setPublisherName(String publisherName) {
+        this.publisherName = publisherName;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+
+    public void setAddress(String address) {
+        this.address = address;
+    }
+
+    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(id, publisher.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return id != null ? id.hashCode() : 0;
+    }
+
+    @Override
+    public String toString() {
+        return "Publisher{" +
+                "id=" + id +
+                ", publisherName='" + publisherName + '\'' +
+                ", address='" + address + '\'' +
+                ", city='" + city + '\'' +
+                ", state='" + state + '\'' +
+                ", zip='" + zip + '\'' +
+                '}';
+    }
+}

src/main/java/guru/springframework/spring6webapp/repositories/AuthorRepository.java

@@ -0,0 +1,7 @@
+package guru.springframework.spring6webapp.repositories;
+
+import guru.springframework.spring6webapp.domain.Author;
+import org.springframework.data.repository.CrudRepository;
+
+public interface AuthorRepository extends CrudRepository<Author, Long> {
+}

src/main/java/guru/springframework/spring6webapp/repositories/BookRepository.java

@@ -0,0 +1,7 @@
+package guru.springframework.spring6webapp.repositories;
+
+import guru.springframework.spring6webapp.domain.Book;
+import org.springframework.data.repository.CrudRepository;
+
+public interface BookRepository extends CrudRepository<Book, Long> {
+}

src/main/java/guru/springframework/spring6webapp/repositories/PublisherRepository.java

@@ -0,0 +1,7 @@
+package guru.springframework.spring6webapp.repositories;
+
+import guru.springframework.spring6webapp.domain.Publisher;
+import org.springframework.data.repository.CrudRepository;
+
+public interface PublisherRepository extends CrudRepository<Publisher, Long> {
+}

src/main/resources/application.properties

@@ -1 +1,2 @@
 
+spring.h2.console.enabled=true