Identity Field Pattern

Author: Rehab-M-Esmail

Identity_Field/pom.xml

@@ -28,14 +28,20 @@
         <artifactId>java-design-patterns</artifactId>
         <version>1.26.0-SNAPSHOT</version>
     </parent>
-
     <artifactId>Identity_Field</artifactId>
 
+    <repositories>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
 
     <properties>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.version>17</java.version>
     </properties>
     <dependencies>
         <dependency>
@@ -47,17 +53,34 @@
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
         </dependency>
-
-
         <dependency>
-            <groupId>jakarta.persistence</groupId>
-            <artifactId>jakarta.persistence-api</artifactId>
-            <version>3.1.0</version>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
         <dependency>
             <groupId>javax.persistence</groupId>
             <artifactId>javax.persistence-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-jpa</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-jpa</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>

Identity_Field/src/main/java/com.iluwater.fieild/Book.java

@@ -26,8 +26,11 @@
 package com.iluwater.fieild;
 import lombok.Getter;
 import lombok.Setter;
+import javax.persistence.Entity;
+
 @Setter
 @Getter
+@Entity
 public class Book extends DomainObject {
   private String title;
   private String author;

Identity_Field/src/main/java/com.iluwater.fieild/Client.java

@@ -26,9 +26,11 @@
 import java.util.regex.Pattern;
 import lombok.Getter;
 import lombok.Setter;
+import javax.persistence.Entity;
 
 @Setter
 @Getter
+@Entity
 public class Client extends DomainObject {
   private static final String EMAIL_REGEX = "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$";
   private String name;

Identity_Field/src/main/java/com.iluwater.fieild/DomainObject.java

@@ -23,26 +23,30 @@
   * THE SOFTWARE.
 */
 package com.iluwater.fieild;
+/*
+ * The DomainObject class provides a base for domain entities
+ * that require unique identification within the application.
+ *
+ * <p>All child classes inherit the unique identifier field
+ * and associated functionality.</p>
+ */
+import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
 import javax.persistence.MappedSuperclass;
 import lombok.Getter;
 import lombok.Setter;
-/*
-  * The DomainObject class provides a base for domain entities
-  * that require unique identification within the application.
-  *
-  * <p>All child classes inherit the unique identifier field
-  * and associated functionality.</p>
-*/
+
 @Getter
 @Setter
 @MappedSuperclass
+@Entity
 public abstract class DomainObject {
   @Id
   @GeneratedValue(strategy = GenerationType.IDENTITY) // automatically generate unique values for primary key columns
+  private Long id;
   //strategy = GenerationType.IDENTITY generate the primary key value by the database itself using the auto-increment column option
-  private Integer id;
+
 
 }

Identity_Field/src/test/java/com/iluwater/fieild/BookRepository.java

@@ -0,0 +1,25 @@
+package com.iluwater.fieild;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Repository
+public class BookRepository extends JpaRepository<Book, Long> {
+  List<Book> BookList =new ArrayList<>();
+
+  public Book createBook(String title,String author) {
+    Book book = new Book(title, author);
+    BookList.add(book);
+    return book;
+  }
+  public Book getBookById(Long id) {
+    for (Book book: BookList )
+    {
+      if(Objects.equals(book.getId(), id))
+        return book;
+    }
+    return null;
+  }
+}

Identity_Field/src/test/java/com/iluwater/fieild/BookTest.java

@@ -30,27 +30,37 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 class BookTest {
+  BookRepository bookRepository;
   @Test
   void checkIdNotNull()
   {
-    Book book= new Book("Design patterns","someone");
+    Book book = bookRepository.createBook("Design patterns","someone");
     assertNotNull(book.getId());
   }
+  @Test
   void checkTwoIdsNotEqual()
   {
-    Book book= new Book("Design patterns","someone");
-    Book book2= new Book("Head first","someone");
+    Book book = bookRepository.createBook("Design patterns","someone");
+    Book book2 = bookRepository.createBook("Head first","someone");
     assertNotEquals(book.getId(),book2.getId());
   }
+  @Test
   void checkTitleNotNull()
   {
-    Book book= new Book("Design patterns","someone");
+    Book book = bookRepository.createBook("Design patterns","someone");
     assertNotNull(book.getTitle());
   }
+  @Test
   void checkAuthorNotNull()
   {
-    Book book= new Book("Design patterns","someone");
+    Book book = bookRepository.createBook("Design patterns","someone");
     assertNotNull(book.getAuthor());
   }
+  void checkSearch()
+  {
+    Book book = bookRepository.createBook("Design patterns","someone");
+    assertNotNull(bookRepository.getBookById(book.getId()));
+
+  }
 
 }

Identity_Field/src/test/java/com/iluwater/fieild/BookTestApp.java

@@ -0,0 +1,18 @@
+package com.iluwater.fieild;
+
+import javax.persistence.Persistence;
+import javax.persistence.EntityManagerFactory;
+import javax.persistence.EntityManager;
+
+public class BookTestApp {
+  private BookRepository bookRepository;
+  public static void main(String... args) {
+
+  BookTest bt=new BookTest();
+  bt.checkAuthorNotNull();
+  bt.checkIdNotNull();
+  bt.checkTitleNotNull();
+  bt.checkTwoIdsNotEqual();
+
+  }
+  }

Identity_Field/src/test/java/com/iluwater/fieild/ClientTest.java

@@ -24,26 +24,32 @@
  */
 package com.iluwater.fieild;
 
+import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 class ClientTest {
+  @Test
   void checkIdNotNull()
   {
     Client client= new Client("John","[email protected]");
     assertNotNull(client.getId());
   }
+  @Test
   void checkTwoIdsNotEqual()
   {
     Client client= new Client("John","[email protected]");
     Client client2= new Client("Sara","[email protected]");
     assertNotEquals(client.getId(),client2.getId());
   }
+  @Test
   void checkEmails()
   {
     Client client= new Client("John","[email protected]");
     Client client2= new Client("Sara","[email protected]");
     assertNotEquals(client.getEmail(),client2.getEmail());
   }
+  @Test
   void checkEmailNotNull()
   {
     Client client= new Client("John","[email protected]");

Identity_Field/src/test/java/com/iluwater/fieild/ClientTestApp.java

@@ -0,0 +1,12 @@
+package com.iluwater.fieild;
+
+public class ClientTestApp {
+  public static void main(String... args) {
+    ClientTest c=new ClientTest();
+    c.checkEmailNotNull();
+    c.checkEmails();
+    c.checkIdNotNull();
+    c.checkTwoIdsNotEqual();
+    System.out.println("End of testing");
+  }
+}