_refactor

jpa-one-to-one-demo/Readme.md

@@ -1,11 +0,0 @@
-# Hibernate One to One Mapping Example with Spring Boot and JPA
-
-Read the Tutorial - https://www.callicoder.com/hibernate-spring-boot-jpa-one-to-one-mapping-example/
-
-## Setup the Application
-
-1. Create a database named `hibernate_one_to_one_demo`.
-
-2. Open `src/main/resources/application.properties` and change `spring.datasource.username` and `spring.datasource.password` properties as per your MySQL installation.
-
-3. Type `mvn spring-boot:run` from the root directory of the project to run the application.

jpa-one-to-one-demo/pom.xml

@@ -4,17 +4,15 @@
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>com.example</groupId>
-	<artifactId>hibernate-one-to-one-demo</artifactId>
+	<artifactId>jpa-one-to-one-demo</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
-	<packaging>jar</packaging>
-
 	<name>hibernate-one-to-one-demo</name>
 	<description>Demo project for Spring Boot</description>
 
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.1.RELEASE</version>
+		<version>2.3.4.RELEASE</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
@@ -33,10 +31,14 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
-
 		<dependency>
-			<groupId>mysql</groupId>
-			<artifactId>mysql-connector-java</artifactId>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
 			<scope>runtime</scope>
 		</dependency>
 		<dependency>

jpa-one-to-one-demo/src/main/java/com/example/jpa/JpaOneToOneDemoApplication.java

@@ -3,59 +3,72 @@
 import com.example.jpa.model.Gender;
 import com.example.jpa.model.User;
 import com.example.jpa.model.UserProfile;
-import com.example.jpa.repository.UserRepository;
 import com.example.jpa.repository.UserProfileRepository;
+import com.example.jpa.repository.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.ApplicationArguments;
+import org.springframework.boot.ApplicationRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import java.util.Calendar;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Collection;
+import java.util.Date;
+import java.util.List;
 
 @SpringBootApplication
-public class JpaOneToOneDemoApplication implements CommandLineRunner {
+@RestController
+public class JpaOneToOneDemoApplication implements ApplicationRunner {
+
 
 	@Autowired
 	private UserRepository userRepository;
 
 	@Autowired
-    private UserProfileRepository userProfileRepository;
+	private UserProfileRepository userProfileRepository;
 
 	public static void main(String[] args) {
 		SpringApplication.run(JpaOneToOneDemoApplication.class, args);
 	}
 
-	@Override
-	public void run(String... args) throws Exception {
-		// Clean up database tables
-		userProfileRepository.deleteAllInBatch();
-		userRepository.deleteAllInBatch();
-
-		//=========================================
+	@GetMapping("/users")
+	public Collection<User> getUsers(){
+		return userRepository.findAll();
+	}
 
-		// Create a User instance
-		User user = new User("Rajeev", "Singh", "[email protected]",
-				"MY_SUPER_SECRET_PASSWORD");
+	@GetMapping("/user_profiles")
+	public Collection<UserProfile> getUserProfiles(){
+		return userProfileRepository.findAll();
+	}
 
-		Calendar dateOfBirth = Calendar.getInstance();
-		dateOfBirth.set(1992, 7, 21);
+	@Override
+	public void run(ApplicationArguments args) throws Exception {
 
-		// Create a UserProfile instance
-		UserProfile userProfile = new UserProfile("+91-8197882053", Gender.MALE, dateOfBirth.getTime(),
-				"747", "2nd Cross", "Golf View Road, Kodihalli", "Bangalore",
-				"Karnataka", "India", "560008");
+		UserProfile userProfile1 = new UserProfile();
+		userProfile1.setAddress1("Address 1");
+		userProfile1.setAddress2("Address 2");
+		userProfile1.setCity("City 1");
+		userProfile1.setCountry("Country 1");
+		userProfile1.setDateOfBirth(new Date());
+		userProfile1.setGender(Gender.FEMALE);
 
 
-		// Set child reference(userProfile) in parent entity(user)
-		user.setUserProfile(userProfile);
+		User user1 = new User();
+		user1.setEmail("[email protected]");
+		user1.setFirstName("SomeFirstName");
+		user1.setLastName("SomeLastName");
+		user1.setPassword("SomePassword");
+		userRepository.save(user1);
 
-		// Set parent reference(user) in child entity(userProfile)
-		userProfile.setUser(user);
+		userProfile1.setUser(user1);
+		userProfileRepository.save(userProfile1);
 
-		// Save Parent Reference (which will save the child as well)
-		userRepository.save(user);
+		userProfileRepository.findAll().forEach(userProfile -> {
+			System.out.println(userProfile.getAddress1() + " " + userProfile.getAddress2());
+			System.out.println(userProfile.getUser().getFirstName() + " " + userProfile.getUser().getLastName());
+		});
 
-		//=========================================
 	}
-
-
 }

jpa-one-to-one-demo/src/main/java/com/example/jpa/model/User.java

@@ -1,103 +1,45 @@
 package com.example.jpa.model;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
 import javax.persistence.*;
-import javax.validation.constraints.Email;
-import javax.validation.constraints.NotNull;
-import javax.validation.constraints.Size;
 import java.io.Serializable;
 
 /**
  * Created by rajeevkumarsingh on 20/11/17.
  */
 @Entity
 @Table(name = "users")
+@Data
+@NoArgsConstructor
 public class User implements Serializable {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
-    @NotNull
-    @Size(max = 65)
     @Column(name = "first_name")
     private String firstName;
 
-    @Size(max = 65)
     @Column(name = "last_name")
     private String lastName;
 
-    @NotNull
-    @Email
-    @Size(max = 100)
     @Column(unique = true)
     private String email;
 
-    @NotNull
-    @Size(max = 128)
     private String password;
 
     @OneToOne(fetch = FetchType.LAZY,
             cascade =  CascadeType.ALL,
             mappedBy = "user")
     private UserProfile userProfile;
 
-    // Hibernate requires a no-arg constructor
-    public User() {
-
-    }
-
     public User(String firstName, String lastName, String email, String password) {
         this.firstName = firstName;
         this.lastName = lastName;
         this.email = email;
         this.password = password;
     }
-
-    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 String getEmail() {
-        return email;
-    }
-
-    public void setEmail(String email) {
-        this.email = email;
-    }
-
-    public String getPassword() {
-        return password;
-    }
-
-    public void setPassword(String password) {
-        this.password = password;
-    }
-
-
-    public UserProfile getUserProfile() {
-        return userProfile;
-    }
-
-    public void setUserProfile(UserProfile userProfile) {
-        this.userProfile = userProfile;
-    }
 }