From 7079f8fa78ab6af0f73d4e27c0e074be3d4c48e8 Mon Sep 17 00:00:00 2001
From: Boutachrafine <boutachrafine.nabil@gmail.com>
Date: Sun, 3 Aug 2025 14:03:14 +0100
Subject: [PATCH 1/2] Adding JPA Entities

---
 pom.xml                                       |  5 ++
 .../spring6webapp/domain/Author.java          | 49 +++++++++++++++++
 .../spring6webapp/domain/Book.java            | 52 +++++++++++++++++++
 web/WEB-INF/web.xml                           |  6 +++
 4 files changed, 112 insertions(+)
 create mode 100644 src/main/java/guru/springframework/spring6webapp/domain/Author.java
 create mode 100644 src/main/java/guru/springframework/spring6webapp/domain/Book.java
 create mode 100644 web/WEB-INF/web.xml

diff --git a/pom.xml b/pom.xml
index 922b9c237..a3ff74962 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,6 +37,11 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>jakarta.persistence</groupId>
+            <artifactId>jakarta.persistence-api</artifactId>
+            <version>3.1.0</version>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/guru/springframework/spring6webapp/domain/Author.java b/src/main/java/guru/springframework/spring6webapp/domain/Author.java
new file mode 100644
index 000000000..dccb300e0
--- /dev/null
+++ b/src/main/java/guru/springframework/spring6webapp/domain/Author.java
@@ -0,0 +1,49 @@
+package guru.springframework.spring6webapp.domain;
+
+import jakarta.persistence.*;
+import java.util.Set;
+
+@Entity // this annotation indicates that this class is a JPA entity
+public class Author {
+
+    @Id // This annotation indicates that this field is the primary key of the entity
+    @GeneratedValue (strategy = GenerationType.AUTO) // this annotation specifies that the primary key will be generated automatically
+    private Long idAuthor;
+    private String firstName;
+    private String lastName;
+
+    @ManyToMany(mappedBy = "authors") // this annotation indicates a many-to-many relationship with the Book entity
+    private Set<Book> books;
+
+    public Long getIdAuthor() {
+        return idAuthor;
+    }
+
+    public void setIdAuthor(Long idAuthor) {
+        this.idAuthor = idAuthor;
+    }
+
+    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;
+    }
+}
diff --git a/src/main/java/guru/springframework/spring6webapp/domain/Book.java b/src/main/java/guru/springframework/spring6webapp/domain/Book.java
new file mode 100644
index 000000000..a3834c2b4
--- /dev/null
+++ b/src/main/java/guru/springframework/spring6webapp/domain/Book.java
@@ -0,0 +1,52 @@
+package guru.springframework.spring6webapp.domain;
+
+import jakarta.persistence.*;
+
+import java.util.Set;
+
+@Entity
+public class Book {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long idBook;
+    private String title;
+    private String isbn;
+
+    @ManyToMany
+    @JoinTable(name ="author_book", joinColumns = @JoinColumn(name = "book_id"),
+    inverseJoinColumns = @JoinColumn(name = "author_id")) // This annotation defines the join table for the many-to-many relationship
+    private Set<Author> authors;
+
+    public Long getIdBook() {
+        return idBook;
+    }
+
+    public void setIdBook(Long idBook) {
+        this.idBook = idBook;
+    }
+
+    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;
+    }
+}
diff --git a/web/WEB-INF/web.xml b/web/WEB-INF/web.xml
new file mode 100644
index 000000000..d80081d13
--- /dev/null
+++ b/web/WEB-INF/web.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0">
+</web-app>
\ No newline at end of file

From fe09d4ec2497f85f8a4063cc396e737c8ebadc74 Mon Sep 17 00:00:00 2001
From: Boutachrafine <boutachrafine.nabil@gmail.com>
Date: Sun, 3 Aug 2025 14:10:29 +0100
Subject: [PATCH 2/2] Adding JPA entities

---
 pom.xml                                                        | 3 +++
 .../java/guru/springframework/spring6webapp/domain/Author.java | 1 -
 .../java/guru/springframework/spring6webapp/domain/Book.java   | 1 -
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/pom.xml b/pom.xml
index a3ff74962..3dc3f576b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,10 +23,12 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>
         </dependency>
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
@@ -37,6 +39,7 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
+
         <dependency>
             <groupId>jakarta.persistence</groupId>
             <artifactId>jakarta.persistence-api</artifactId>
diff --git a/src/main/java/guru/springframework/spring6webapp/domain/Author.java b/src/main/java/guru/springframework/spring6webapp/domain/Author.java
index dccb300e0..f2d72db16 100644
--- a/src/main/java/guru/springframework/spring6webapp/domain/Author.java
+++ b/src/main/java/guru/springframework/spring6webapp/domain/Author.java
@@ -5,7 +5,6 @@
 
 @Entity // this annotation indicates that this class is a JPA entity
 public class Author {
-
     @Id // This annotation indicates that this field is the primary key of the entity
     @GeneratedValue (strategy = GenerationType.AUTO) // this annotation specifies that the primary key will be generated automatically
     private Long idAuthor;
diff --git a/src/main/java/guru/springframework/spring6webapp/domain/Book.java b/src/main/java/guru/springframework/spring6webapp/domain/Book.java
index a3834c2b4..294698c78 100644
--- a/src/main/java/guru/springframework/spring6webapp/domain/Book.java
+++ b/src/main/java/guru/springframework/spring6webapp/domain/Book.java
@@ -6,7 +6,6 @@
 
 @Entity
 public class Book {
-
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     private Long idBook;