BAEL-2840 - Spring Data Web Support (#6672)

* Initial Commit

* Update UserRepository.java

* Update UserControllerIntegrationTest.java

* Update UserRepository.java

* Update pom.xml

spring-data-rest/src/main/java/com/baeldung/springdatawebsupport/application/Application.java

@@ -0,0 +1,28 @@
+package com.baeldung.springdatawebsupport.application;
+
+import com.baeldung.springdatawebsupport.application.entities.User;
+import com.baeldung.springdatawebsupport.application.repositories.UserRepository;
+import java.util.stream.Stream;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+    @Bean
+    CommandLineRunner initialize(UserRepository userRepository) {
+        return args -> {
+            Stream.of("John", "Robert", "Nataly", "Helen", "Mary").forEach(name -> {
+                User user = new User(name);
+                userRepository.save(user);
+            });
+            userRepository.findAll().forEach(System.out::println);
+        };
+    }
+}

spring-data-rest/src/main/java/com/baeldung/springdatawebsupport/application/controllers/UserController.java

@@ -0,0 +1,47 @@
+package com.baeldung.springdatawebsupport.application.controllers;
+
+import com.baeldung.springdatawebsupport.application.entities.User;
+import com.baeldung.springdatawebsupport.application.repositories.UserRepository;
+import com.querydsl.core.types.Predicate;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.querydsl.binding.QuerydslPredicate;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class UserController {
+
+    private final UserRepository userRepository;
+
+    @Autowired
+    public UserController(UserRepository userRepository) {
+        this.userRepository = userRepository;
+    }
+
+    @GetMapping("/users/{id}")
+    public User findUserById(@PathVariable("id") User user) {
+        return user;
+    }
+
+    @GetMapping("/users")
+    public Page<User> findAllUsers(Pageable pageable) {
+        return userRepository.findAll(pageable);
+    }
+	
+    @GetMapping("/sortedusers")
+    public Page<User> findAllUsersSortedByName() {
+        Pageable pageable = PageRequest.of(0, 5, Sort.by("name"));
+        return userRepository.findAll(pageable);
+    }
+
+    @GetMapping("/filteredusers")
+    public Iterable<User> getUsersByQuerydslPredicate(@QuerydslPredicate(root = User.class) Predicate predicate) {
+        return userRepository.findAll(predicate);
+    }
+}

spring-data-rest/src/main/java/com/baeldung/springdatawebsupport/application/entities/User.java

@@ -0,0 +1,38 @@
+package com.baeldung.springdatawebsupport.application.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+public class User {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+    private final String name;
+
+    public User() {
+        this.name = "";
+    }
+
+    public User(String name) {
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public String toString() {
+        return "User{" + "id=" + id + ", name=" + name + '}';
+    }
+}

spring-data-rest/src/main/java/com/baeldung/springdatawebsupport/application/repositories/UserRepository.java

@@ -0,0 +1,14 @@
+package com.baeldung.springdatawebsupport.application.repositories;
+
+import com.baeldung.springdatawebsupport.application.entities.User;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.data.repository.PagingAndSortingRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface UserRepository extends PagingAndSortingRepository<User, Long>, 
+  QuerydslPredicateExecutor<User> {
+
+}