vavr spring data (#2242)

* vavr spring data

* formatting

* formatting

* formatting

* formatting

vavr/pom.xml

@@ -6,10 +6,11 @@
     <version>1.0</version>
     <name>vavr</name>
 	
-	<parent>
-        <groupId>com.baeldung</groupId>
-        <artifactId>parent-modules</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.0.0.BUILD-SNAPSHOT</version>
+        <relativePath />
     </parent>
 
     <dependencies>
@@ -24,9 +25,36 @@
             <artifactId>junit</artifactId>
             <version>${junit.version}</version>
         </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>
+        </dependency>
     </dependencies>
+	
+    <repositories>
+        <repository>
+            <id>spring-snapshot</id>
+            <name>Spring Snapshot Repository</name>
+            <url>https://repo.spring.io/snapshot</url>
+            <snapshots>
+                <enabled>true</enabled>
+            </snapshots>
+        </repository>
+    </repositories>
 
     <properties>
+        <java.version>1.8</java.version>
         <vavr.version>0.9.0</vavr.version>
         <junit.version>4.12</junit.version>
     </properties>

vavr/src/main/java/com/baeldung/Application.java

@@ -0,0 +1,11 @@
+package com.baeldung;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

vavr/src/main/java/com/baeldung/repositories/VavrUserRepository.java

@@ -0,0 +1,18 @@
+package com.baeldung.repositories;
+
+import org.springframework.data.repository.Repository;
+
+import com.baeldung.vavr.User;
+
+import io.vavr.collection.Seq;
+import io.vavr.control.Option;
+
+public interface VavrUserRepository extends Repository<User, Long> {
+
+    Option<User> findById(long id);
+
+    Seq<User> findByName(String name);
+
+    User save(User user);
+
+}

vavr/src/main/java/com/baeldung/vavr/User.java

@@ -0,0 +1,32 @@
+package com.baeldung.vavr;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class User {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    private String name;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

vavr/src/test/java/com/baeldung/vavr/repositories/VavrRepositoryIntegrationTest.java

@@ -0,0 +1,47 @@
+package com.baeldung.vavr.repositories;
+
+import com.baeldung.Application;
+import com.baeldung.repositories.VavrUserRepository;
+import com.baeldung.vavr.User;
+
+import io.vavr.collection.Seq;
+import io.vavr.control.Option;
+
+import org.junit.Test;
+import org.junit.Before;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.junit.Assert.*;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class)
+public class VavrRepositoryIntegrationTest {
+
+    @Autowired
+    private VavrUserRepository userRepository;
+
+    @Before
+    public void setup() {
+        User user1 = new User();
+        user1.setName("John");
+        User user2 = new User();
+        user2.setName("John");
+
+        userRepository.save(user1);
+        userRepository.save(user2);
+    }
+
+    @Test
+    public void whenAddUsers_thenGetUsers() {
+        Option<User> user = userRepository.findById(1L);
+        assertFalse(user.isEmpty());
+        assertTrue(user.get().getName().equals("John"));
+
+        Seq<User> users = userRepository.findByName("John");
+        assertEquals(2, users.size());
+    }
+
+}