moved OSIV examples from spring-data-jpa-3 to spring-data-jpa-4

persistence-modules/spring-data-jpa-3/README.md

@@ -9,8 +9,8 @@
 - [Spring Data JPA Batch Inserts](https://www.baeldung.com/spring-data-jpa-batch-inserts)
 - [Batch Insert/Update with Hibernate/JPA](https://www.baeldung.com/jpa-hibernate-batch-insert-update)
 - [Difference Between save() and saveAndFlush() in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-save-saveandflush)
+
 - [Programmatic Transaction Management in Spring](https://www.baeldung.com/spring-programmatic-transaction-management)
-- [A Guide to Spring’s Open Session In View](https://www.baeldung.com/spring-open-session-in-view)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/Application.java

@@ -2,8 +2,10 @@ package com.baeldung;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 
 @SpringBootApplication
+@EnableJpaRepositories
 public class Application {
 
     public static void main(String[] args) {

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/boot/daos/CustomerRepository.java

@@ -1,6 +1,8 @@
 package com.baeldung.boot.daos;
 
 import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
 
 import com.baeldung.boot.domain.Customer;
 
@@ -10,6 +12,8 @@ import com.baeldung.boot.domain.Customer;
  * @author ysharma2512
  *
  */
+@Repository
+@Transactional
 public interface CustomerRepository extends CrudRepository<Customer, Long>{
 
 }

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/boot/web/controllers/CustomerController.java

@@ -4,7 +4,6 @@ import java.net.URISyntaxException;
 import java.util.Arrays;
 import java.util.List;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RestController;
@@ -22,7 +21,6 @@ import com.baeldung.boot.domain.Customer;
 @RestController
 public class CustomerController {
 
-    @Autowired
     CustomerRepository customerRepository;
 
     public CustomerController(CustomerRepository customerRepository2) {

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/repository/UserRepository.java

@@ -1,15 +1,12 @@
 package com.baeldung.repository;
 
-import com.baeldung.model.BasicUser;
-import org.springframework.data.jpa.repository.EntityGraph;
-import org.springframework.data.jpa.repository.JpaRepository;
-
 import java.util.Optional;
 
-public interface UserRepository extends JpaRepository<BasicUser, Long> {
+import org.springframework.data.jpa.repository.JpaRepository;
 
-    @EntityGraph(attributePaths = "permissions")
-    Optional<BasicUser> findDetailedByUsername(String username);
+import com.baeldung.model.BasicUser;
+
+public interface UserRepository extends JpaRepository<BasicUser, Long> {
 
     Optional<BasicUser> findSummaryByUsername(String username);
 

persistence-modules/spring-data-jpa-4/README.md

@@ -1,6 +1,7 @@
 ### Relevant Articles: 
 - [Derived Query Methods in Spring Data JPA Repositories](https://www.baeldung.com/spring-data-derived-queries)
 - [LIKE Queries in Spring JPA Repositories](https://www.baeldung.com/spring-jpa-like-queries)
+- [A Guide to Spring’s Open Session In View](https://www.baeldung.com/spring-open-session-in-view)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

persistence-modules/spring-data-jpa-4/pom.xml

@@ -15,6 +15,11 @@
     </parent>
 
     <dependencies>
+    	<dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+    
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-jpa</artifactId>

persistence-modules/spring-data-jpa-4/src/main/java/com/baeldung/Application.java

@@ -2,8 +2,12 @@ package com.baeldung;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 
 @SpringBootApplication
+@EnableJpaRepositories
+@EntityScan
 public class Application {
 
     public static void main(String[] args) {

persistence-modules/spring-data-jpa-4/src/main/java/com/baeldung/model/BasicUser.java

@@ -0,0 +1,42 @@
+package com.baeldung.model;
+
+import javax.persistence.*;
+import java.util.Set;
+
+@Entity
+@Table(name = "users")
+public class BasicUser {
+
+    @Id
+    @GeneratedValue
+    private Long id;
+
+    private String username;
+
+    @ElementCollection
+    private Set<String> permissions;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public Set<String> getPermissions() {
+        return permissions;
+    }
+
+    public void setPermissions(Set<String> permissions) {
+        this.permissions = permissions;
+    }
+}

persistence-modules/spring-data-jpa-4/src/main/java/com/baeldung/repository/BasicUserRepository.java

@@ -0,0 +1,19 @@
+package com.baeldung.repository;
+
+import java.util.Optional;
+
+import org.springframework.data.jpa.repository.EntityGraph;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.baeldung.model.BasicUser;
+
+@Repository
+@Transactional
+public interface BasicUserRepository extends JpaRepository<BasicUser, Long> {
+    
+    @EntityGraph(attributePaths = "permissions")
+    Optional<BasicUser> findDetailedByUsername(String username);
+
+}

persistence-modules/spring-data-jpa-4/src/main/java/com/baeldung/service/SimpleUserService.java

@@ -1,18 +1,19 @@
 package com.baeldung.service;
 
-import com.baeldung.model.BasicUser;
-import com.baeldung.repository.UserRepository;
+import java.util.Optional;
+
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.util.Optional;
+import com.baeldung.model.BasicUser;
+import com.baeldung.repository.BasicUserRepository;
 
 @Service
 public class SimpleUserService implements UserService {
 
-    private final UserRepository userRepository;
+    private final BasicUserRepository userRepository;
 
-    public SimpleUserService(UserRepository userRepository) {
+    public SimpleUserService(BasicUserRepository userRepository) {
         this.userRepository = userRepository;
     }
 

persistence-modules/spring-data-jpa-4/src/test/java/com/baeldung/osiv/UserControllerIntegrationTest.java

@@ -1,7 +1,8 @@
 package com.baeldung.osiv;
 
+import com.baeldung.Application;
 import com.baeldung.model.BasicUser;
-import com.baeldung.repository.UserRepository;
+import com.baeldung.repository.BasicUserRepository;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -9,6 +10,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.web.servlet.MockMvc;
 
 import java.util.Arrays;
@@ -21,11 +23,12 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
 
 @SpringBootTest
 @AutoConfigureMockMvc
+@ContextConfiguration(classes = Application.class)
 @ActiveProfiles("test")
 class UserControllerIntegrationTest {
 
     @Autowired
-    private UserRepository userRepository;
+    private BasicUserRepository userRepository;
 
     @Autowired
     private MockMvc mockMvc;

persistence-modules/spring-data-jpa-4/src/test/resources/application-test.properties

@@ -0,0 +1,2 @@
+spring.jpa.hibernate.ddl-auto=update
+spring.datasource.url=jdbc:h2:mem:jpa3