Javaslang Fetched Upstream and Updated (#1368)

* javaslang updates

* groovy

* update and clean from upstream

* upate from upstream and clean

* update

* cleanup

* clean

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<String> 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;
+    }
+}

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<String> authors;
+    
+    
+    public void setAuthors(List<String> authors){
+        this.authors = authors;
+    }
+    
+    public void setTitle(String title){
+        this.title = title;
+    }
+    
+    public String getTitle(){
+        return this.title;
+    }
+   
+    public Long getId(){
+        return this.id;
+    }
+}
+

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,Long>{
+    Book save(Book book);
+        
+    Option<Book> findById(Long id);
+        
+    Option<Seq<Book>> findByTitleContaining(String title);
+
+}

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,Long>{
+    JavaBook save(JavaBook book);
+        
+    JavaBook findById(Long id);
+        
+    List<JavaBook> findByTitleContaining(String title);
+}

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);
+    }
+}

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<Seq<Book>> 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<Book> retBook = repository.findById(1L);
+        assert(retBook.isDefined() && !retBook.isEmpty());
+        assert(retBook.get() != null);
+    }
+    
+    @Test
+    public void should_return_list(){
+        ArrayList<String> authors = new ArrayList<String>();
+        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<JavaBook> 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<String> authors = new ArrayList<String>();
+        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"));
+    }
+}