Bael 5303 graphqlvs rest (#11715)

* GraphQL and REST Comparison

* Updating README

* Reformatting code

spring-boot-modules/pom.xml

@@ -51,6 +51,7 @@
         <!-- <module>spring-boot-keycloak</module> --> <!-- Fixing under JAVA-8271 -->
         <module>spring-boot-libraries</module>
         <module>spring-boot-libraries-2</module>
+        <module>spring-boot-libraries-comparison</module>
         <module>spring-boot-logging-log4j2</module>
         <module>spring-boot-multiple-datasources</module>
         <module>spring-boot-mvc</module>

spring-boot-modules/spring-boot-libraries-comparison/README.md

@@ -0,0 +1,7 @@
+## Spring Boot Libraries
+
+This module contains articles about various Spring Boot libraries Comparison
+
+### Relevant Articles:
+
+- [GraphQL vs REST](https://www.baeldung.com/graphql-vs-rest/)

spring-boot-modules/spring-boot-libraries-comparison/pom.xml

@@ -0,0 +1,46 @@
+<?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>
+    <artifactId>spring-boot-libraries-comparison</artifactId>
+
+    <parent>
+        <groupId>com.baeldung.spring-boot-modules</groupId>
+        <artifactId>spring-boot-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.graphql-java</groupId>
+            <artifactId>graphql-spring-boot-starter</artifactId>
+            <version>${graphql-spring-boot-starter.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.graphql-java</groupId>
+            <artifactId>graphql-java-tools</artifactId>
+            <version>${graphql-java-tools.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.graphql-java</groupId>
+            <artifactId>graphiql-spring-boot-starter</artifactId>
+            <version>${graphql-spring-boot-starter.version}</version>
+        </dependency>
+    </dependencies>
+
+
+    <properties>
+        <graphql-spring-boot-starter.version>5.0.2</graphql-spring-boot-starter.version>
+        <graphql-java-tools.version>5.2.4</graphql-java-tools.version>
+    </properties>
+
+</project>

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/GraphqlVsRestApplication.java

@@ -0,0 +1,19 @@
+package com.baeldung.graphqlvsrest;
+
+import com.baeldung.graphqlvsrest.configuration.GraphqlConfiguration;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+import org.springframework.context.annotation.Import;
+
+@SpringBootApplication
+@Import(GraphqlConfiguration.class)
+@EnableAutoConfiguration(exclude = {SecurityAutoConfiguration.class})
+public class GraphqlVsRestApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(GraphqlVsRestApplication.class, args);
+    }
+
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/configuration/GraphqlConfiguration.java

@@ -0,0 +1,35 @@
+package com.baeldung.graphqlvsrest.configuration;
+
+import com.baeldung.graphqlvsrest.repository.OrderRepository;
+import com.baeldung.graphqlvsrest.resolver.Mutation;
+import com.baeldung.graphqlvsrest.resolver.ProductResolver;
+import com.baeldung.graphqlvsrest.resolver.Query;
+import com.baeldung.graphqlvsrest.repository.ProductRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class GraphqlConfiguration {
+
+    @Autowired
+    ProductRepository productRepository;
+
+    @Autowired
+    OrderRepository orderRepository;
+
+    @Bean
+    public Query query() {
+        return new Query(productRepository);
+    }
+
+    @Bean
+    public ProductResolver productResolver(){
+        return new ProductResolver(orderRepository);
+    }
+
+    @Bean
+    public Mutation mutation() {
+        return new Mutation(productRepository);
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/controller/OrderController.java

@@ -0,0 +1,25 @@
+package com.baeldung.graphqlvsrest.controller;
+
+import com.baeldung.graphqlvsrest.entity.Order;
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.model.ProductModel;
+import com.baeldung.graphqlvsrest.repository.OrderRepository;
+import com.baeldung.graphqlvsrest.repository.ProductRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Pageable;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("order")
+public class OrderController {
+
+    @Autowired
+    OrderRepository orderRepository;
+
+    @GetMapping()
+    public List<Order> getOrders(@RequestParam("product-id") Integer productId){
+        return orderRepository.getOrdersByProduct(productId);
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/controller/ProductController.java

@@ -0,0 +1,38 @@
+package com.baeldung.graphqlvsrest.controller;
+
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.model.ProductModel;
+import com.baeldung.graphqlvsrest.repository.ProductRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Pageable;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("product")
+public class ProductController {
+
+    @Autowired
+    ProductRepository productRepository;
+
+    @GetMapping
+    public List<Product> getProducts(Pageable pageable){
+        return productRepository.getProducts(pageable.getPageSize(), pageable.getPageNumber());
+    }
+
+    @GetMapping("/{product-id}")
+    public Product getProducts(@PathVariable("product-id") Integer productId){
+        return productRepository.getProduct(productId);
+    }
+
+    @PostMapping
+    public Product save(@RequestBody ProductModel productModel){
+        return productRepository.save(productModel);
+    }
+
+    @PutMapping("/{product-id}")
+    public Product update(@PathVariable("product-id") Integer productId, @RequestBody ProductModel productModel){
+        return productRepository.update(productId, productModel);
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/entity/Order.java

@@ -0,0 +1,58 @@
+package com.baeldung.graphqlvsrest.entity;
+
+public class Order {
+    private Integer id;
+    private Integer product_id;
+    private String customer_uuid;
+    private String status;
+    private String address;
+    private String creation_date;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public Integer getProduct_id() {
+        return product_id;
+    }
+
+    public void setProduct_id(Integer product_id) {
+        this.product_id = product_id;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getCustomer_uuid() {
+        return customer_uuid;
+    }
+
+    public void setCustomer_uuid(String customer_uuid) {
+        this.customer_uuid = customer_uuid;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+
+    public void setAddress(String address) {
+        this.address = address;
+    }
+
+    public String getCreation_date() {
+        return creation_date;
+    }
+
+    public void setCreation_date(String creation_date) {
+        this.creation_date = creation_date;
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/entity/Product.java

@@ -0,0 +1,115 @@
+package com.baeldung.graphqlvsrest.entity;
+
+import com.baeldung.graphqlvsrest.model.ProductModel;
+
+import java.util.List;
+
+public class Product {
+    private Integer id;
+    private String name;
+    private String description;
+    private String status;
+    private String currency;
+    private Double price;
+    private List<String> image_url;
+    private List<String> video_url;
+    private Integer stock;
+    private Float average_rating;
+
+    public Product(Integer id, ProductModel productModel) {
+        this.id = id;
+        this.name = productModel.getName();
+        this.description = productModel.getDescription();
+        this.currency = productModel.getCurrency();
+        this.price = productModel.getPrice();
+        this.stock = productModel.getStock();
+        this.image_url = productModel.getImage_url();
+        this.video_url = productModel.getVideo_url();
+        this.average_rating = 0F;
+        this.status = productModel.getStatus();
+    }
+
+    public Product(){
+
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getCurrency() {
+        return currency;
+    }
+
+    public void setCurrency(String currency) {
+        this.currency = currency;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public List<String> getImage_url() {
+        return image_url;
+    }
+
+    public void setImage_url(List<String> image_url) {
+        this.image_url = image_url;
+    }
+
+    public List<String> getVideo_url() {
+        return video_url;
+    }
+
+    public void setVideo_url(List<String> video_url) {
+        this.video_url = video_url;
+    }
+
+    public Integer getStock() {
+        return stock;
+    }
+
+    public void setStock(Integer stock) {
+        this.stock = stock;
+    }
+
+    public Float getAverage_rating() {
+        return average_rating;
+    }
+
+    public void setAverage_rating(Float average_rating) {
+        this.average_rating = average_rating;
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/model/ProductModel.java

@@ -0,0 +1,92 @@
+package com.baeldung.graphqlvsrest.model;
+
+import java.util.List;
+
+public class ProductModel {
+    private String name;
+    private String description;
+    private String status;
+    private String currency;
+    private Double price;
+    private List<String> image_url;
+    private List<String> video_url;
+    private Integer stock;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    public String getCurrency() {
+        return currency;
+    }
+
+    public void setCurrency(String currency) {
+        this.currency = currency;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public List<String> getImage_url() {
+        return image_url;
+    }
+
+    public void setImage_url(List<String> image_url) {
+        this.image_url = image_url;
+    }
+
+    public List<String> getVideo_url() {
+        return video_url;
+    }
+
+    public void setVideo_url(List<String> video_url) {
+        this.video_url = video_url;
+    }
+
+    public Integer getStock() {
+        return stock;
+    }
+
+    public void setStock(Integer stock) {
+        this.stock = stock;
+    }
+
+    @Override
+    public String toString() {
+        return "ProductModel{" +
+                "name='" + name + '\'' +
+                ", description='" + description + '\'' +
+                ", status='" + status + '\'' +
+                ", currency='" + currency + '\'' +
+                ", price=" + price +
+                ", image_url=" + image_url +
+                ", video_url=" + video_url +
+                ", stock=" + stock +
+                '}';
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/repository/OrderRepository.java

@@ -0,0 +1,11 @@
+package com.baeldung.graphqlvsrest.repository;
+
+import com.baeldung.graphqlvsrest.entity.Order;
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.model.ProductModel;
+
+import java.util.List;
+
+public interface OrderRepository {
+    List<Order> getOrdersByProduct(Integer productId);
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/repository/ProductRepository.java

@@ -0,0 +1,14 @@
+package com.baeldung.graphqlvsrest.repository;
+
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.model.ProductModel;
+
+import java.util.List;
+
+public interface ProductRepository {
+    List<Product> getProducts(Integer pageSize, Integer pageNumber);
+    Product getProduct(Integer id);
+    Product save(ProductModel productModel);
+    Product update(Integer productId, ProductModel productModel);
+
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/repository/impl/OrderRepositoryImpl.java

@@ -0,0 +1,36 @@
+package com.baeldung.graphqlvsrest.repository.impl;
+
+import com.baeldung.graphqlvsrest.entity.Order;
+import com.baeldung.graphqlvsrest.repository.OrderRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+@Repository
+public class OrderRepositoryImpl implements OrderRepository {
+
+    private static List<Order> orderList = new ArrayList<>();
+
+    public OrderRepositoryImpl() {
+        for (int i = 1; i <= 100; i++){
+            Order order = new Order();
+            order.setId(i);
+            order.setProduct_id(i%10);
+            order.setAddress(UUID.randomUUID().toString());
+            order.setCustomer_uuid(UUID.randomUUID().toString());
+            order.setCreation_date(new Date(System.currentTimeMillis()).toString());
+            order.setStatus("Delivered");
+            orderList.add(order);
+        }
+    }
+
+
+    @Override
+    public List<Order> getOrdersByProduct(Integer productId) {
+        return orderList.stream().filter(order -> order.getProduct_id().equals(productId)).collect(Collectors.toList());
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/repository/impl/ProductRepositoryImpl.java

@@ -0,0 +1,74 @@
+package com.baeldung.graphqlvsrest.repository.impl;
+
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.model.ProductModel;
+import com.baeldung.graphqlvsrest.repository.ProductRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+@Repository
+public class ProductRepositoryImpl implements ProductRepository {
+
+    private static List<Product> productList = new ArrayList<>();
+
+    public ProductRepositoryImpl() {
+        for (int i = 1; i <= 10; i++){
+            Product product = new Product();
+            product.setId(i);
+            product.setName(String.format("Product %d", i));
+            product.setDescription(String.format("Product %d description", i));
+            product.setCurrency(String.format("Product %d currency", i));
+            product.setPrice(Double.valueOf(i^2));
+            product.setStock(10);
+            product.setAverage_rating(0F);
+            product.setImage_url(Arrays.asList(String.format("www.baeldung.com/imageurl/%d", i)));
+            product.setVideo_url(Arrays.asList(String.format("www.baeldung.com/videourl/%d", i)));
+            productList.add(product);
+        }
+    }
+
+    @Override
+    public List<Product> getProducts(Integer pageSize, Integer pageNumber) {
+        return productList.stream().skip(pageSize*pageNumber).limit(pageSize).collect(Collectors.toList());
+    }
+
+    @Override
+    public Product getProduct(Integer id) {
+        return productList.stream().filter(product -> product.getId().equals(id)).findFirst().orElse(null);
+    }
+
+    @Override
+    public Product save(ProductModel productModel) {
+        Product product = new Product(productList.size()+1, productModel);
+        productList.add(product);
+        return product;
+    }
+
+    @Override
+    public Product update(Integer productId, ProductModel productModel) {
+        Product product =  getProduct(productId);
+        if (product != null){
+            update(product, productModel);
+        }
+        return product;
+    }
+
+    private void update(Product product, ProductModel productModel){
+        if (productModel != null) {
+            System.out.println(productModel.toString());
+            Optional.ofNullable(productModel.getName()).ifPresent(product::setName);
+            Optional.ofNullable(productModel.getDescription()).ifPresent(product::setDescription);
+            Optional.ofNullable(productModel.getCurrency()).ifPresent(product::setCurrency);
+            Optional.ofNullable(productModel.getImage_url()).ifPresent(product::setImage_url);
+            Optional.ofNullable(productModel.getStock()).ifPresent(product::setStock);
+            Optional.ofNullable(productModel.getStatus()).ifPresent(product::setStatus);
+            Optional.ofNullable(productModel.getVideo_url()).ifPresent(product::setVideo_url);
+            Optional.ofNullable(productModel.getPrice()).ifPresent(product::setPrice);
+        }
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/resolver/Mutation.java

@@ -0,0 +1,22 @@
+package com.baeldung.graphqlvsrest.resolver;
+
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.model.ProductModel;
+import com.baeldung.graphqlvsrest.repository.ProductRepository;
+import com.coxautodev.graphql.tools.GraphQLMutationResolver;
+
+public class Mutation implements GraphQLMutationResolver {
+
+    private ProductRepository productRepository;
+    public Mutation(ProductRepository productRepository){
+        this.productRepository = productRepository;
+    }
+
+    public Product saveProduct(ProductModel productModel) {
+        return productRepository.save(productModel);
+    }
+
+    public Product updateProduct(Integer productId, ProductModel productModel) {
+        return productRepository.update(productId, productModel);
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/resolver/ProductResolver.java

@@ -0,0 +1,18 @@
+package com.baeldung.graphqlvsrest.resolver;
+
+import com.baeldung.graphqlvsrest.entity.Order;
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.repository.OrderRepository;
+import com.coxautodev.graphql.tools.GraphQLResolver;
+
+import java.util.List;
+
+public class ProductResolver implements GraphQLResolver<Product> {
+    private OrderRepository orderRepository;
+    public ProductResolver(OrderRepository orderRepository){
+        this.orderRepository = orderRepository;
+    }
+    public List<Order> getOrders(Product product){
+        return orderRepository.getOrdersByProduct(product.getId());
+    }
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/java/com/baeldung/graphqlvsrest/resolver/Query.java

@@ -0,0 +1,27 @@
+package com.baeldung.graphqlvsrest.resolver;
+
+import com.baeldung.graphqlvsrest.entity.Order;
+import com.baeldung.graphqlvsrest.entity.Product;
+import com.baeldung.graphqlvsrest.repository.OrderRepository;
+import com.baeldung.graphqlvsrest.repository.ProductRepository;
+import com.coxautodev.graphql.tools.GraphQLQueryResolver;
+
+import java.util.List;
+
+public class Query implements GraphQLQueryResolver {
+
+    private ProductRepository productRepository;
+    public Query(ProductRepository productRepository){
+        this.productRepository = productRepository;
+    }
+
+    public List<Product> getProducts(int pageSize, int pageNumber) {
+        return productRepository.getProducts(pageSize, pageNumber);
+    }
+
+    public Product getProduct(int id) {
+        return productRepository.getProduct(id);
+    }
+
+
+}

spring-boot-modules/spring-boot-libraries-comparison/src/main/resources/graphql/schema.graphqls

@@ -0,0 +1,57 @@
+type Product {
+    id: ID
+    name: String!
+    description: String
+    status: String
+    currency: String!
+    price: Float
+    image_url: [String]
+    video_url: [String]
+    stock: Int
+    average_rating: Float
+    orders:[Order]
+}
+
+type Order{
+    id:ID
+    product_id:Int
+    customer_uuid:String
+    address:String
+    status:String
+    creation_date:String
+}
+
+input ProductModel {
+    name: String!
+    description: String
+    status: String
+    currency: String!
+    price: Float
+    image_url: [String]
+    video_url: [String]
+    stock: Int
+}
+
+input ProductUpdateModel {
+    name: String
+    description: String
+    status: String
+    currency: String
+    price: Float
+    image_url: [String]
+    video_url: [String]
+    stock: Int
+}
+
+
+# The Root Query for the application
+type Query {
+    products(size: Int, page: Int): [Product]!
+    product(id: Int): Product!
+}
+
+# The Root Mutation for the application
+type Mutation {
+    saveProduct(product: ProductModel) : Product!
+    updateProduct(id: Int, product: ProductUpdateModel) : Product!
+}