diff --git a/spring-data-javaslang/.gitignore b/spring-data-javaslang/.gitignore
new file mode 100644
index 0000000000..7ee5423d14
--- /dev/null
+++ b/spring-data-javaslang/.gitignore
@@ -0,0 +1,5 @@
+/target/
+/project/
+.idea
+.classpath
+.eclipse
diff --git a/spring-data-javaslang/pom.xml b/spring-data-javaslang/pom.xml
new file mode 100644
index 0000000000..c265e893cc
--- /dev/null
+++ b/spring-data-javaslang/pom.xml
@@ -0,0 +1,133 @@
+
+
+ 4.0.0
+ spring-data-javaslangb
+ spring-data-javaslangb
+ 0.0.1-SNAPSHOT
+
+ UTF-8
+ 2.19.1
+ 3.1
+ 2.9.1-01
+ 2.3.7-01
+ 2.4.8
+ 2.0.5
+ 4.12
+ 1.5.1.RELEASE
+ 4.3.6.RELEASE
+ 4.3.6.RELEASE
+ 4.3.6.RELEASE
+ ${basedir}/src/test/java
+
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 1.5.1.RELEASE
+
+
+
+ test-app
+
+ verify
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+ spring-boot-run
+ verify
+
+ run
+
+ false
+
+
+
+
+
+
+
+
+
+
+ maven-compiler-plugin
+ 3.5.1
+
+ 1.8
+ 1.8
+
+
+
+ org.apache.maven.plugins
+ maven-surefire-plugin
+ ${maven-surefire-plugin.version}
+
+ ${project.build.testSourceDirectory}
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-devtools
+ true
+
+
+
+ com.h2database
+ h2
+ 1.4.193
+
+
+
+ io.javaslang
+ javaslang
+ ${javaslang.version}
+
+
+
+ org.springframework.data
+ spring-data-jpa
+ 1.11.0.RELEASE
+
+
+
+ org.springframework.boot
+ spring-boot
+ ${spring-boot.version}
+
+
+
+ org.springframework.boot
+ spring-boot-starter-data-jpa
+ ${spring-boot.version}
+
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ ${spring-boot.version}
+
+
+
+ org.springframework
+ spring-context
+ ${spring-context.version}
+
+
+
+ org.springframework
+ spring-core
+ ${spring-core.version}
+
+
+
+ junit
+ junit
+ ${junit.version}
+ test
+
+
+
\ No newline at end of file
diff --git a/spring-data-javaslang/src/main/java/com/baeldung/spring_data/model/Book.java b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/model/Book.java
new file mode 100644
index 0000000000..95653abb6c
--- /dev/null
+++ b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/model/Book.java
@@ -0,0 +1,45 @@
+package com.baeldung.spring_data.model;
+
+import javaslang.collection.Seq;
+
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.CollectionTable;
+import javax.persistence.Column;
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+
+@Entity
+@Table(name = "book")
+public class Book {
+
+ @GeneratedValue
+ @Id
+ private Long id;
+
+ private String title;
+
+ private Seq authors;
+
+
+ public void setTitle(String title){
+ this.title = title;
+ }
+
+ public String getTitle(){
+ return this.title;
+ }
+
+ public Long getId(){
+ return this.id;
+ }
+
+ public void setAuthors(Seq authors){
+ this.authors = authors;
+ }
+
+ public Seq getAuthors(){
+ return this.authors;
+ }
+}
diff --git a/spring-data-javaslang/src/main/java/com/baeldung/spring_data/model/JavaBook.java b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/model/JavaBook.java
new file mode 100644
index 0000000000..ab99b0d929
--- /dev/null
+++ b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/model/JavaBook.java
@@ -0,0 +1,41 @@
+package com.baeldung.spring_data.model;
+
+import javax.persistence.ElementCollection;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import java.util.List;
+
+@Entity
+@Table(name = "java_book")
+public class JavaBook {
+
+ @GeneratedValue
+ @Id
+ private Long id;
+
+ private String title;
+
+ @ElementCollection
+ private List authors;
+
+
+ public void setAuthors(List authors){
+ this.authors = authors;
+ }
+
+ public void setTitle(String title){
+ this.title = title;
+ }
+
+ public String getTitle(){
+ return this.title;
+ }
+
+ public Long getId(){
+ return this.id;
+ }
+}
+
diff --git a/spring-data-javaslang/src/main/java/com/baeldung/spring_data/repository/BookRepository.java b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/repository/BookRepository.java
new file mode 100644
index 0000000000..75b6d0b426
--- /dev/null
+++ b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/repository/BookRepository.java
@@ -0,0 +1,19 @@
+package com.baeldung.spring_data.repository;
+
+import com.baeldung.spring_data.model.Book;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import javaslang.collection.Seq;
+import javaslang.control.Option;
+
+@Repository
+public interface BookRepository extends JpaRepository{
+ Book save(Book book);
+
+ Option findById(Long id);
+
+ Option> findByTitleContaining(String title);
+
+}
diff --git a/spring-data-javaslang/src/main/java/com/baeldung/spring_data/repository/JavaBookRepository.java b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/repository/JavaBookRepository.java
new file mode 100644
index 0000000000..a4aeab85ee
--- /dev/null
+++ b/spring-data-javaslang/src/main/java/com/baeldung/spring_data/repository/JavaBookRepository.java
@@ -0,0 +1,17 @@
+package com.baeldung.spring_data.repository;
+
+import com.baeldung.spring_data.model.JavaBook;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface JavaBookRepository extends JpaRepository{
+ JavaBook save(JavaBook book);
+
+ JavaBook findById(Long id);
+
+ List findByTitleContaining(String title);
+}
\ No newline at end of file
diff --git a/spring-data-javaslang/src/main/java/com/baeldung/spring_data_app/MainApp.java b/spring-data-javaslang/src/main/java/com/baeldung/spring_data_app/MainApp.java
new file mode 100644
index 0000000000..d8a194e92e
--- /dev/null
+++ b/spring-data-javaslang/src/main/java/com/baeldung/spring_data_app/MainApp.java
@@ -0,0 +1,21 @@
+package com.baeldung.spring_data_app;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+@Configuration
+@EnableJpaRepositories("com.baeldung.spring_data.repository")
+@EnableTransactionManagement
+@EntityScan("com.baeldung.spring_data.model")
+@SpringBootApplication
+public class MainApp {
+ public static void main(String[] args){
+ SpringApplication.run(MainApp.class, args);
+ }
+}
diff --git a/spring-data-javaslang/src/test/java/com/baeldung/spring_data_tests/SpringTests.java b/spring-data-javaslang/src/test/java/com/baeldung/spring_data_tests/SpringTests.java
new file mode 100644
index 0000000000..59a6c120fa
--- /dev/null
+++ b/spring-data-javaslang/src/test/java/com/baeldung/spring_data_tests/SpringTests.java
@@ -0,0 +1,86 @@
+package com.baeldung.spring_data_tests;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import com.baeldung.spring_data_app.MainApp;
+import com.baeldung.spring_data.model.Book;
+import com.baeldung.spring_data.model.JavaBook;
+import com.baeldung.spring_data.repository.BookRepository;
+import com.baeldung.spring_data.repository.JavaBookRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import javaslang.collection.Seq;
+import javaslang.collection.List;
+import javaslang.control.Option;
+
+import java.util.ArrayList;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = MainApp.class,webEnvironment = WebEnvironment.NONE)
+public class SpringTests {
+
+ @Autowired
+ JavaBookRepository javaRepository;
+
+ @Autowired
+ BookRepository repository;
+
+ @Test
+ public void should_return_seq(){
+ Seq authors = List.of("author1","author2");
+ Book testBook = new Book();
+ testBook.setTitle("Javaslang in Spring Data Seq Test Return");
+ testBook.setAuthors(authors);
+ Book book = repository.save(testBook);
+ Option> books = repository.findByTitleContaining("Seq Test");
+ assert(!books.isEmpty());
+ }
+
+
+ @Test
+ public void should_return_option_with_book(){
+ Seq authors = List.of("author1","author2");
+ Book testBook = new Book();
+ testBook.setTitle("Javaslang in Spring Data");
+ testBook.setAuthors(authors);
+ Book book = repository.save(testBook);
+ Option retBook = repository.findById(1L);
+ assert(retBook.isDefined() && !retBook.isEmpty());
+ assert(retBook.get() != null);
+ }
+
+ @Test
+ public void should_return_list(){
+ ArrayList authors = new ArrayList();
+ authors.add("author1");
+ authors.add("author2");
+ JavaBook testBook = new JavaBook();
+ testBook.setTitle("Javaslang in Spring Data Seq Return");
+ testBook.setAuthors(authors);
+ JavaBook book = javaRepository.save(testBook);
+ java.util.List books = javaRepository.findByTitleContaining("Seq");
+ assert(!books.isEmpty());
+ assert(books.size() == 1);
+ assert(books.get(0).getTitle().equals("Javaslang in Spring Data Seq Return"));
+ }
+
+ @Test
+ public void should_return_book(){
+ ArrayList authors = new ArrayList();
+ authors.add("author1");
+ authors.add("author2");
+ JavaBook testBook = new JavaBook();
+ testBook.setTitle("Javaslang in Spring Data");
+ testBook.setAuthors(authors);
+ JavaBook book = javaRepository.save(testBook);
+ JavaBook retBook = javaRepository.findById(1L);
+ assert(retBook != null);
+ assert(retBook.getId() == 1L);
+ assert(retBook.getTitle().contains("Data"));
+ }
+}
\ No newline at end of file