--- a/spring-boot-playground/pom.xml	Thu Aug 13 14:31:40 2020 +0200
+++ b/spring-boot-playground/pom.xml	Thu Aug 13 15:31:38 2020 +0200
@@ -42,7 +42,15 @@
 			<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>
+		</dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+        
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

--- a/spring-boot-playground/src/main/java/de/comline/spring/application/Application.java	Thu Aug 13 14:31:40 2020 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,66 +0,0 @@
-package de.comline.spring.application;
-
-import java.util.Arrays;
-
-import org.springframework.boot.CommandLineRunner;
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
-import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
-import org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration;
-import org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration;
-import org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration;
-import org.springframework.context.ApplicationContext;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Import;
-
-import de.comline.spring.application.Application.CustomConfig;
-import de.comline.spring.controller.HelloController;
-
-//@SpringBootApplication
-
-//@ComponentScan(basePackages = "de.comline.spring.controller,de.comline.spring.service")
-//@EnableAutoConfiguration
-
-@Import(CustomConfig.class)
-public class Application {
-	public static void main(String[] args) {
-		SpringApplication.run(Application.class, args);
-	}
-
-	@Bean
-	public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
-		return args -> {
-			System.out.println("Let's inspect the beans provided by Spring Boot:");
-
-			String[] beanNames = ctx.getBeanDefinitionNames();
-			Arrays.sort(beanNames);
-			for (String beanName : beanNames) {
-				System.out.println(beanName);
-			}
-		};
-	}
-
-	@Configuration
-	// scheint hier nicht zu funktionieren:
-	// @ComponentScan(basePackages = "de.comline.spring.controller,de.comline.spring.service")
-
-	// ServletWebServerFactoryAutoConfiguration for bringing up the embedded tomcat
-	// DispatcherServletAutoConfiguration for detecting the REST controllers
-	// WebMvcAutoConfiguration enabling Jackson response serialization
-	// @formatter:off
-	@Import({
-			ServletWebServerFactoryAutoConfiguration.class,
-			DispatcherServletAutoConfiguration.class,
-			JacksonAutoConfiguration.class,
-			HttpMessageConvertersAutoConfiguration.class,
-			WebMvcAutoConfiguration.class,
-			
-			HelloController.class
-			// Note how we do not list the CustomLogicController here, hence the controller is not bound
-	})
-	// @formatter:on
-	static class CustomConfig {
-		// no custom methods
-	}
-}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/application/AutoConfiguredApplication.java	Thu Aug 13 15:31:38 2020 +0200
@@ -0,0 +1,38 @@
+package de.comline.spring.application;
+
+import java.util.Arrays;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@ComponentScan(basePackages = {
+	"de.comline.spring.controller",
+	"de.comline.spring.service"
+})
+@EnableAutoConfiguration
+@EnableJpaRepositories("de.comline.spring.repository")
+@EntityScan("de.comline.spring.entity")
+public class AutoConfiguredApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(AutoConfiguredApplication.class, args);
+	}
+
+	@Bean
+	public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
+		return args -> {
+			System.out.println("Let's inspect the beans provided by Spring Boot:");
+
+			String[] beanNames = ctx.getBeanDefinitionNames();
+			Arrays.sort(beanNames);
+			for (String beanName : beanNames) {
+				System.out.println(beanName);
+			}
+		};
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/application/ExplicitlyConfiguredApplication.java	Thu Aug 13 15:31:38 2020 +0200
@@ -0,0 +1,61 @@
+package de.comline.spring.application;
+
+import java.util.Arrays;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import de.comline.spring.application.ExplicitlyConfiguredApplication.CustomConfig;
+import de.comline.spring.controller.HelloController;
+
+@Import(CustomConfig.class)
+public class ExplicitlyConfiguredApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(ExplicitlyConfiguredApplication.class, args);
+	}
+
+	@Bean
+	public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
+		return args -> {
+			System.out.println("Let's inspect the beans provided by Spring Boot:");
+
+			String[] beanNames = ctx.getBeanDefinitionNames();
+			Arrays.sort(beanNames);
+			for (String beanName : beanNames) {
+				System.out.println(beanName);
+			}
+		};
+	}
+
+	@Configuration
+	// scheint hier nicht zu funktionieren:
+	// @ComponentScan(basePackages = "de.comline.spring.controller,de.comline.spring.service")
+
+	// ServletWebServerFactoryAutoConfiguration for bringing up the embedded tomcat
+	// DispatcherServletAutoConfiguration for detecting the REST controllers
+	// WebMvcAutoConfiguration enabling Jackson response serialization
+	// @formatter:off
+	@Import({
+			ServletWebServerFactoryAutoConfiguration.class,
+			DispatcherServletAutoConfiguration.class,
+			JacksonAutoConfiguration.class,
+			HttpMessageConvertersAutoConfiguration.class,
+			WebMvcAutoConfiguration.class,
+			
+			HelloController.class
+			// Note how we do not list the CustomLogicController here, hence the controller is not bound
+	})
+	// @formatter:on
+	static class CustomConfig {
+		// no custom methods
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/controller/MovieController.java	Thu Aug 13 15:31:38 2020 +0200
@@ -0,0 +1,20 @@
+package de.comline.spring.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.comline.spring.service.MovieService;
+
+@RestController
+public class MovieController {
+	@Autowired
+	private MovieService service;
+	
+	@PostMapping("/movie/{title}")
+	public String index(@PathVariable(name = "title") String title) {
+		service.createMovie(title);
+		return "Successfully created movie " + title + ".\n";
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/entity/Movie.java	Thu Aug 13 15:31:38 2020 +0200
@@ -0,0 +1,36 @@
+package de.comline.spring.entity;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "MOVIE")
+public class Movie {
+	@Id
+	@GeneratedValue(strategy = GenerationType.AUTO)
+	@Column(name = "ID")
+	private long id;
+	
+	@Column(name = "TITLE")
+	private String title;
+	
+	/**
+	 * This default constructor is required for hibernate but should not be used from client code.
+	 */
+	@Deprecated
+	protected Movie() {
+		super();
+	}
+	
+	public Movie(String title) {
+		this.title = title;
+	}
+	
+	public String getTitle() {
+		return title;
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/repository/MovieRepository.java	Thu Aug 13 15:31:38 2020 +0200
@@ -0,0 +1,8 @@
+package de.comline.spring.repository;
+
+import org.springframework.data.repository.CrudRepository;
+
+import de.comline.spring.entity.Movie;
+
+public interface MovieRepository extends CrudRepository<Movie, Long> {
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/service/MovieService.java	Thu Aug 13 15:31:38 2020 +0200
@@ -0,0 +1,22 @@
+package de.comline.spring.service;
+
+import javax.transaction.Transactional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import de.comline.spring.entity.Movie;
+import de.comline.spring.repository.MovieRepository;
+
+@Service
+public class MovieService {
+	@Autowired
+	private MovieRepository repository;
+	
+	@Transactional
+	public Movie createMovie(String title) {
+		Movie movie = new Movie(title);
+		movie = repository.save(movie);
+		return movie;
+	}
+}