Simple web-app example for spring-boot-data-jdbc

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+target
+.idea
+*.iml

diff --git a/pom.xml b/pom.xml
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+++ b/pom.xml
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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+   <modelVersion>4.0.0</modelVersion>
+   <parent>
+     <groupId>org.springframework.boot</groupId>
+     <artifactId>spring-boot-starter-parent</artifactId>
+     <version>2.1.5.RELEASE</version>
+     <relativePath/> <!-- lookup parent from repository -->
+   </parent>
+   <groupId>de.juplo.boot.data</groupId>
+   <artifactId>jdbc</artifactId>
+   <version>0.0.1-SNAPSHOT</version>
+   <name>data-jdbc</name>
+   <description>Simple web-app example for spring-boot-data-jdbc</description>
+
+   <properties>
+     <java.version>1.8</java.version>
+   </properties>
+
+   <dependencies>
+     <dependency>
+       <groupId>org.springframework.boot</groupId>
+       <artifactId>spring-boot-starter-web</artifactId>
+     </dependency>
+     <dependency>
+       <groupId>org.springframework.boot</groupId>
+       <artifactId>spring-boot-starter-actuator</artifactId>
+     </dependency>
+     <dependency>
+       <groupId>org.springframework.boot</groupId>
+       <artifactId>spring-boot-starter-data-jdbc</artifactId>
+     </dependency>
+     <dependency>
+       <groupId>org.springframework.boot</groupId>
+       <artifactId>spring-boot-starter-json</artifactId>
+     </dependency>
+     <dependency>
+       <groupId>org.projectlombok</groupId>
+       <artifactId>lombok</artifactId>
+     </dependency>
+     <dependency>
+       <groupId>com.h2database</groupId>
+       <artifactId>h2</artifactId>
+     </dependency>
+     <dependency>
+       <groupId>org.springframework.boot</groupId>
+       <artifactId>spring-boot-starter-test</artifactId>
+       <scope>test</scope>
+     </dependency>
+   </dependencies>
+
+   <build>
+     <plugins>
+       <plugin>
+         <groupId>org.springframework.boot</groupId>
+         <artifactId>spring-boot-maven-plugin</artifactId>
+       </plugin>
+     </plugins>
+   </build>
+
+</project>

diff --git a/src/main/java/de/juplo/boot/data/jdbc/Application.java b/src/main/java/de/juplo/boot/data/jdbc/Application.java
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+++ b/src/main/java/de/juplo/boot/data/jdbc/Application.java
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+package de.juplo.boot.data.jdbc;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    private final static Logger LOG = LoggerFactory.getLogger(Application.class);
+
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

diff --git a/src/main/java/de/juplo/boot/data/jdbc/User.java b/src/main/java/de/juplo/boot/data/jdbc/User.java
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+++ b/src/main/java/de/juplo/boot/data/jdbc/User.java
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+package de.juplo.boot.data.jdbc;
+
+import lombok.*;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.time.LocalDateTime;
+
+@Table("users")
+public class User {
+    @Id
+    Long id;
+    @Getter
+    @Setter
+    String username;
+    @Getter
+    @Setter
+    LocalDateTime created;
+    @Getter
+    @Setter
+    boolean loggedIn;
+
+    public User(String username, LocalDateTime created, boolean loggedIn) {
+        this.username = username;
+        this.created = created;
+        this.loggedIn = loggedIn;
+    }
+}

diff --git a/src/main/java/de/juplo/boot/data/jdbc/UserController.java b/src/main/java/de/juplo/boot/data/jdbc/UserController.java
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+++ b/src/main/java/de/juplo/boot/data/jdbc/UserController.java
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+package de.juplo.boot.data.jdbc;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+import org.springframework.web.util.UriComponents;
+
+import java.time.LocalDateTime;
+
+@RestController
+@Transactional
+@RequestMapping("/users")
+public class UserController {
+
+    private static final Logger LOG = LoggerFactory.getLogger(UserController.class);
+
+
+    private final UserRepository repository;
+
+
+    public UserController(UserRepository repository) {
+        this.repository = repository;
+    }
+
+
+    @PostMapping
+    public ResponseEntity<Void> createUser(
+            ServletUriComponentsBuilder builder,
+            @RequestBody String username) {
+        String sanitizedUsername = UserController.sanitize(username);
+        User user = new User(sanitizedUsername, LocalDateTime.now(), false);
+        repository.save(user);
+        UriComponents uri =
+            builder
+                .fromCurrentRequest()
+                .pathSegment("{username}")
+                .buildAndExpand(sanitizedUsername);
+        return ResponseEntity.created(uri.toUri()).build();
+    }
+
+    @GetMapping("{username}")
+    public ResponseEntity<User> getUser(@PathVariable String username) {
+        User user = repository.findByUsername(UserController.sanitize(username));
+
+        if (user == null)
+            return ResponseEntity.notFound().build();
+
+        return ResponseEntity.ok(user);
+    }
+
+    @DeleteMapping("{username}")
+    public ResponseEntity<User> removeUser(@PathVariable String username) {
+        User user = repository.findByUsername(UserController.sanitize(username));
+
+        if (user == null)
+            return ResponseEntity.notFound().build();
+
+        repository.delete(user);
+
+        return ResponseEntity.ok(user);
+    }
+
+    @GetMapping()
+    public ResponseEntity<Iterable<User>> getUsers() {
+        return ResponseEntity.ok(repository.findAll());
+    }
+
+
+    private static String sanitize(String string) {
+        if (string == null)
+            return "";
+
+        return string.trim().toLowerCase();
+    }
+}

diff --git a/src/main/java/de/juplo/boot/data/jdbc/UserRepository.java b/src/main/java/de/juplo/boot/data/jdbc/UserRepository.java
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+++ b/src/main/java/de/juplo/boot/data/jdbc/UserRepository.java
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+package de.juplo.boot.data.jdbc;
+
+import org.springframework.data.jdbc.repository.query.Query;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.query.Param;
+
+public interface UserRepository extends CrudRepository<User, Long> {
+    @Query("select * from users u where u.username = :username")
+    User findByUsername(@Param("username") String username);
+}

diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
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+++ b/src/main/resources/application.yml
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+management:
+  endpoints:
+    web:
+      exposure:
+        include: "*"

diff --git a/src/main/resources/schema.sql b/src/main/resources/schema.sql
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+++ b/src/main/resources/schema.sql
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+CREATE TABLE users (id BIGINT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(255), created TIMESTAMP, logged_in BIT);

diff --git a/src/test/java/de/juplo/boot/data/jdbc/ApplicationTests.java b/src/test/java/de/juplo/boot/data/jdbc/ApplicationTests.java
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+++ b/src/test/java/de/juplo/boot/data/jdbc/ApplicationTests.java
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+package de.juplo.boot.data.jdbc;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class ApplicationTests {
+
+    @Test
+    public void contextLoads() {
+    }
+
+}