[JAVA-14663] Update Graphql code for Boot 2.7.x changes and move to new module (#12729)

spring-boot-modules/pom.xml

@@ -41,6 +41,7 @@
         <module>spring-boot-environment</module>
         <module>spring-boot-exceptions</module>
         <module>spring-boot-flowable</module>
+        <module>spring-boot-graphql</module>
         <module>spring-boot-groovy</module>
         <!-- <module>spring-boot-gradle</module> --> <!-- Not a maven project -->
         <module>spring-boot-jasypt</module>

spring-boot-modules/spring-boot-graphql/GraphQL collection.postman_collection.json

@@ -0,0 +1,124 @@
+{
+	"info": {
+		"_postman_id": "bae0e3d0-2b86-46aa-b6df-523497a2296a",
+		"name": "GraphQL collection",
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
+	},
+	"item": [
+		{
+			"name": "mutations",
+			"item": [
+				{
+					"name": "createPost",
+					"request": {
+						"method": "POST",
+						"header": [],
+						"body": {
+							"mode": "graphql",
+							"graphql": {
+								"query": "mutation createPost ($title: String!, $text: String!, $category: String, $authorId: String!) {\n    createPost (title: $title, text: $text, category: $category, authorId: $authorId) {\n        id\n        title\n        text\n        category\n    }\n}",
+								"variables": "{\n  \"title\": \"new post\",\n  \"text\": \"new post text\",\n  \"category\": \"category\",\n  \"authorId\": \"Author0\"\n}"
+							}
+						},
+						"url": {
+							"raw": "http://localhost:8080/graphql",
+							"protocol": "http",
+							"host": [
+								"localhost"
+							],
+							"port": "8080",
+							"path": [
+								"graphql"
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		},
+		{
+			"name": "queries",
+			"item": [
+				{
+					"name": "get recent posts",
+					"request": {
+						"method": "POST",
+						"header": [],
+						"body": {
+							"mode": "graphql",
+							"graphql": {
+								"query": "{\r\n    recentPosts(count: 10, offset: 0) {\r\n        id\r\n        title\r\n        category\r\n        text\r\n        author {\r\n            id\r\n            name\r\n            thumbnail\r\n        }\r\n    }\r\n}",
+								"variables": ""
+							}
+						},
+						"url": {
+							"raw": "http://localhost:8080/graphql",
+							"protocol": "http",
+							"host": [
+								"localhost"
+							],
+							"port": "8080",
+							"path": [
+								"graphql"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "recentPosts - variables",
+					"request": {
+						"method": "POST",
+						"header": [],
+						"body": {
+							"mode": "graphql",
+							"graphql": {
+								"query": "query recentPosts ($count: Int, $offset: Int) {\n    recentPosts (count: $count, offset: $offset) {\n        id\n        title\n        text\n        category\n    }\n}",
+								"variables": "{\n  \"count\": 5,\n  \"offset\": 0\n}"
+							}
+						},
+						"url": {
+							"raw": "http://localhost:8080/graphql",
+							"protocol": "http",
+							"host": [
+								"localhost"
+							],
+							"port": "8080",
+							"path": [
+								"graphql"
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		}
+	],
+	"event": [
+		{
+			"listen": "prerequest",
+			"script": {
+				"type": "text/javascript",
+				"exec": [
+					""
+				]
+			}
+		},
+		{
+			"listen": "test",
+			"script": {
+				"type": "text/javascript",
+				"exec": [
+					""
+				]
+			}
+		}
+	],
+	"variable": [
+		{
+			"key": "url",
+			"value": "",
+			"type": "string"
+		}
+	]
+}

spring-boot-modules/spring-boot-graphql/README.md

@@ -0,0 +1,29 @@
+## Spring Boot Graphql
+
+This module contains articles about Spring Boot Graphql
+
+### The Course
+The "REST With Spring" Classes: http://bit.ly/restwithspring
+
+### Relevant Articles:
+
+- [Getting Started with GraphQL and Spring Boot](https://www.baeldung.com/spring-graphql)
+- [Expose GraphQL Field with Different Name](https://www.baeldung.com/graphql-field-name)
+
+### GraphQL sample queries
+
+Query
+```shell script
+curl \
+--request POST 'localhost:8080/graphql' \
+--header 'Content-Type: application/json' \
+--data-raw '{"query":"query {\n    recentPosts(count: 2, offset: 0) {\n        id\n        title\n        author {\n            id\n            posts {\n                id\n            }\n        }\n    }\n}"}'
+```
+
+Mutation
+```shell script
+curl \
+--request POST 'localhost:8080/graphql' \
+--header 'Content-Type: application/json' \
+--data-raw '{"query":"mutation {\n    createPost(title: \"New Title\", authorId: \"Author2\", text: \"New Text\") {\n id\n       category\n        author {\n            id\n            name\n        }\n    }\n}"}'
+```

spring-boot-modules/spring-boot-graphql/pom.xml

@@ -0,0 +1,41 @@
+<?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-graphql</artifactId>
+    <name>spring-boot-graphql</name>
+    <packaging>war</packaging>
+
+    <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.boot</groupId>
+            <artifactId>spring-boot-starter-graphql</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.graphql</groupId>
+            <artifactId>spring-graphql-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/Author.java

@@ -0,0 +1,11 @@
+package com.baeldung.graphql;
+
+import lombok.Data;
+
+@Data
+public class Author {
+
+    private String id;
+    private String name;
+    private String thumbnail;
+}

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/AuthorController.java

@@ -0,0 +1,21 @@
+package com.baeldung.graphql;
+
+import org.springframework.graphql.data.method.annotation.SchemaMapping;
+import org.springframework.stereotype.Controller;
+
+import java.util.List;
+
+@Controller
+public class AuthorController {
+
+    private final PostDao postDao;
+
+    public AuthorController(PostDao postDao) {
+        this.postDao = postDao;
+    }
+
+    @SchemaMapping
+    public List<Post> posts(Author author) {
+        return postDao.getAuthorPosts(author.getId());
+    }
+}

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/AuthorDao.java

@@ -0,0 +1,18 @@
+package com.baeldung.graphql;
+
+import java.util.List;
+
+public class AuthorDao {
+    private final List<Author> authors;
+
+    public AuthorDao(List<Author> authors) {
+        this.authors = authors;
+    }
+
+    public Author getAuthor(String id) {
+        return authors.stream()
+          .filter(author -> id.equals(author.getId()))
+          .findFirst()
+          .orElseThrow(RuntimeException::new);
+    }
+}

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/GraphqlApplication.java

@@ -1,20 +1,16 @@
 package com.baeldung.graphql;
 
-import com.baeldung.graphql.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 DemoApplication {
+public class GraphqlApplication {
 
     public static void main(String[] args) {
-        System.setProperty("spring.config.name", "demo");
+        SpringApplication.run(GraphqlApplication.class, args);
-        SpringApplication.run(DemoApplication.class, args);
     }
 
 }

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/GraphqlConfiguration.java

@@ -1,13 +1,14 @@
 package com.baeldung.graphql;
 
-import java.util.ArrayList;
-import java.util.List;
-
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Configuration
 public class GraphqlConfiguration {
+
     @Bean
     public PostDao postDao() {
         List<Post> posts = new ArrayList<>();
@@ -16,6 +17,7 @@ public class GraphqlConfiguration {
                 Post post = new Post();
                 post.setId("Post" + authorId + postId);
                 post.setTitle("Post " + authorId + ":" + postId);
+                post.setCategory("Post category");
                 post.setText("Post " + postId + " + by author " + authorId);
                 post.setAuthorId("Author" + authorId);
                 posts.add(post);
@@ -36,24 +38,4 @@ public class GraphqlConfiguration {
         }
         return new AuthorDao(authors);
     }
-
-    @Bean
-    public PostResolver postResolver(AuthorDao authorDao) {
-        return new PostResolver(authorDao);
-    }
-
-    @Bean
-    public AuthorResolver authorResolver(PostDao postDao) {
-        return new AuthorResolver(postDao);
-    }
-
-    @Bean
-    public Query query(PostDao postDao) {
-        return new Query(postDao);
-    }
-
-    @Bean
-    public Mutation mutation(PostDao postDao) {
-        return new Mutation(postDao);
-    }
 }

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/Post.java

@@ -0,0 +1,14 @@
+package com.baeldung.graphql;
+
+import lombok.Data;
+
+@Data
+public class Post {
+
+    private String id;
+    private String title;
+    private String text;
+    private String category;
+    private String authorId;
+
+}

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/PostController.java

@@ -0,0 +1,52 @@
+package com.baeldung.graphql;
+
+import org.springframework.graphql.data.method.annotation.Argument;
+import org.springframework.graphql.data.method.annotation.MutationMapping;
+import org.springframework.graphql.data.method.annotation.QueryMapping;
+import org.springframework.graphql.data.method.annotation.SchemaMapping;
+import org.springframework.stereotype.Controller;
+
+import java.util.List;
+import java.util.UUID;
+
+@Controller
+public class PostController {
+
+    private final PostDao postDao;
+    private final AuthorDao authorDao;
+
+    public PostController(PostDao postDao, AuthorDao authorDao) {
+        this.postDao = postDao;
+        this.authorDao = authorDao;
+    }
+
+    @QueryMapping
+    public List<Post> recentPosts(@Argument int count, @Argument int offset) {
+        return postDao.getRecentPosts(count, offset);
+    }
+
+    @SchemaMapping
+    public Author author(Post post) {
+        return authorDao.getAuthor(post.getAuthorId());
+    }
+
+    @SchemaMapping(typeName="Post", field="first_author")
+    public Author getFirstAuthor(Post post) {
+        return authorDao.getAuthor(post.getAuthorId());
+    }
+
+    @MutationMapping
+    public Post createPost(@Argument String title, @Argument String text,
+      @Argument String category, @Argument String authorId) {
+        Post post = new Post();
+        post.setId(UUID.randomUUID().toString());
+        post.setTitle(title);
+        post.setText(text);
+        post.setCategory(category);
+        post.setAuthorId(authorId);
+        postDao.savePost(post);
+
+        return post;
+    }
+
+}

spring-boot-modules/spring-boot-graphql/src/main/java/com/baeldung/graphql/PostDao.java

@@ -4,21 +4,27 @@ import java.util.List;
 import java.util.stream.Collectors;
 
 public class PostDao {
-    private List<Post> posts;
+
+    private final List<Post> posts;
 
     public PostDao(List<Post> posts) {
         this.posts = posts;
     }
 
     public List<Post> getRecentPosts(int count, int offset) {
-        return posts.stream().skip(offset).limit(count).collect(Collectors.toList());
+        return posts.stream()
+          .skip(offset)
+          .limit(count)
+          .collect(Collectors.toList());
     }
 
     public List<Post> getAuthorPosts(String author) {
-        return posts.stream().filter(post -> author.equals(post.getAuthorId())).collect(Collectors.toList());
+        return posts.stream()
+          .filter(post -> author.equals(post.getAuthorId()))
+          .collect(Collectors.toList());
     }
 
     public void savePost(Post post) {
-        posts.add(0, post);
+        posts.add(post);
     }
 }

spring-boot-modules/spring-boot-graphql/src/main/resources/application.yml

@@ -0,0 +1,4 @@
+spring:
+  graphql:
+    graphiql:
+      enabled: true

spring-boot-modules/spring-boot-graphql/src/main/resources/graphql/post.graphqls

@@ -21,5 +21,5 @@ type Query {
 
 # The Root Mutation for the application
 type Mutation {
-    writePost(title: String!, text: String!, category: String, author: String!) : Post!
+    createPost(title: String!, text: String!, category: String, authorId: String!) : Post!
 }

spring-boot-modules/spring-boot-graphql/src/test/java/com/baeldung/graphql/PostControllerIntegrationTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.graphql;
+
+import lombok.SneakyThrows;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.graphql.GraphQlTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+@GraphQlTest(PostController.class)
+@Import(GraphqlConfiguration.class)
+class PostControllerIntegrationTest {
+
+    @Autowired
+    private GraphQlTester graphQlTester;
+
+    @Test
+    void givenPosts_whenExecuteQueryForRecentPosts_thenReturnResponse() {
+        String documentName = "recent_posts";
+
+        graphQlTester.documentName(documentName)
+          .variable("count", 2)
+          .variable("offset", 0)
+          .execute()
+          .path("$")
+          .matchesJson(expected(documentName));
+    }
+
+    @Test
+    void givenNewPostData_whenExecuteMutation_thenNewPostCreated() {
+        String documentName = "create_post";
+
+        graphQlTester.documentName(documentName)
+          .variable("title", "New Post")
+          .variable("text", "New post text")
+          .variable("category", "category")
+          .variable("authorId", "Author0")
+          .execute()
+          .path("createPost.id").hasValue()
+          .path("createPost.title").entity(String.class).isEqualTo("New Post")
+          .path("createPost.text").entity(String.class).isEqualTo("New post text")
+          .path("createPost.category").entity(String.class).isEqualTo("category");
+    }
+
+    @SneakyThrows
+    public static String expected(String fileName) {
+        Path path = Paths.get("src/test/resources/graphql-test/" + fileName + "_expected_response.json");
+        return new String(Files.readAllBytes(path));
+    }
+}

spring-boot-modules/spring-boot-graphql/src/test/java/com/baeldung/graphql/SpringContextTest.java

@@ -0,0 +1,12 @@
+package com.baeldung.graphql;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest(classes = GraphqlApplication.class)
+public class SpringContextTest {
+
+    @Test
+    public void whenSpringContextIsBootstrapped_thenNoExceptions() {
+    }
+}

spring-boot-modules/spring-boot-graphql/src/test/resources/GraphQL collection.postman_collection.json

@@ -9,14 +9,14 @@
 			"name": "mutations",
 			"item": [
 				{
-					"name": "writePost",
+					"name": "createPost",
 					"request": {
 						"method": "POST",
 						"header": [],
 						"body": {
 							"mode": "graphql",
 							"graphql": {
-								"query": "mutation writePost ($title: String!, $text: String!, $category: String) {\n    writePost (title: $title, text: $text, category: $category) {\n        id\n        title\n        text\n        category\n    }\n}",
+								"query": "mutation createPost ($title: String!, $text: String!, $category: String) {\n    createPost (title: $title, text: $text, category: $category) {\n        id\n        title\n        text\n        category\n    }\n}",
 								"variables": "{\n  \"title\": \"\",\n  \"text\": \"\",\n  \"category\": \"\"\n}"
 							},
 							"options": {

spring-boot-modules/spring-boot-graphql/src/test/resources/graphql-test/create_post.graphql

@@ -0,0 +1,8 @@
+mutation createPost ($title: String!, $text: String!, $category: String, $authorId: String!) {
+    createPost (title: $title, text: $text, category: $category, authorId: $authorId) {
+        id
+        title
+        text
+        category
+    }
+}

spring-boot-modules/spring-boot-graphql/src/test/resources/graphql-test/recent_posts.graphql

@@ -0,0 +1,13 @@
+query recentPosts ($count: Int, $offset: Int) {
+    recentPosts (count: $count, offset: $offset) {
+        id
+        title
+        text
+        category
+        author {
+            id
+            name
+            thumbnail
+        }
+    }
+}

spring-boot-modules/spring-boot-graphql/src/test/resources/graphql-test/recent_posts_expected_response.json

@@ -0,0 +1,28 @@
+{
+  "data": {
+    "recentPosts": [
+      {
+        "id": "Post00",
+        "title": "Post 0:0",
+        "category": "Post category",
+        "text": "Post 0 + by author 0",
+        "author": {
+          "id": "Author0",
+          "name": "Author 0",
+          "thumbnail": "http://example.com/authors/0"
+        }
+      },
+      {
+        "id": "Post10",
+        "title": "Post 1:0",
+        "category": "Post category",
+        "text": "Post 0 + by author 1",
+        "author": {
+          "id": "Author1",
+          "name": "Author 1",
+          "thumbnail": "http://example.com/authors/1"
+        }
+      }
+    ]
+  }
+}

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

@@ -13,24 +13,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Rate Limiting a Spring API Using Bucket4j](https://www.baeldung.com/spring-bucket4j)
 - [Spring Boot and Caffeine Cache](https://www.baeldung.com/spring-boot-caffeine-cache)
 - [Spring Boot and Togglz Aspect](https://www.baeldung.com/spring-togglz)
-- [Getting Started with GraphQL and Spring Boot](https://www.baeldung.com/spring-graphql)
+- More articles: [[next -->]](../spring-boot-libraries-2)
-- [Expose GraphQL Field with Different Name](https://www.baeldung.com/graphql-field-name)
-- More articles: [[next -->]](/spring-boot-modules/spring-boot-libraries-2)
-
-### GraphQL sample queries
-
-Query
-```shell script
-curl \
---request POST 'localhost:8081/graphql' \
---header 'Content-Type: application/json' \
---data-raw '{"query":"query {\n    recentPosts(count: 2, offset: 0) {\n        id\n        title\n        author {\n            id\n            posts {\n                id\n            }\n        }\n    }\n}"}'
-```
-
-Mutation
-```shell script
-curl \
---request POST 'localhost:8081/graphql' \
---header 'Content-Type: application/json' \
---data-raw '{"query":"mutation {\n    writePost(title: \"New Title\", author: \"Author2\", text: \"New Text\") {\n        id\n        category\n        author {\n            id\n            name\n        }\n    }\n}"}'
-```

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

@@ -46,22 +46,6 @@
             <artifactId>togglz-spring-security</artifactId>
             <version>${togglz.version}</version>
         </dependency>
-        <!-- graphql -->
-        <dependency>
-            <groupId>com.graphql-java</groupId>
-            <artifactId>graphql-spring-boot-starter</artifactId>
-            <version>${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>
         <!-- Problem Spring Web -->
         <dependency>
             <groupId>org.zalando</groupId>

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/Author.java

@@ -1,31 +0,0 @@
-package com.baeldung.graphql;
-
-public class Author {
-    private String id;
-    private String name;
-    private String thumbnail;
-
-    public String getId() {
-        return id;
-    }
-
-    public void setId(String id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public String getThumbnail() {
-        return thumbnail;
-    }
-
-    public void setThumbnail(String thumbnail) {
-        this.thumbnail = thumbnail;
-    }
-}

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/AuthorDao.java

@@ -1,16 +0,0 @@
-package com.baeldung.graphql;
-
-import java.util.List;
-import java.util.Optional;
-
-public class AuthorDao {
-    private List<Author> authors;
-
-    public AuthorDao(List<Author> authors) {
-        this.authors = authors;
-    }
-
-    public Optional<Author> getAuthor(String id) {
-        return authors.stream().filter(author -> id.equals(author.getId())).findFirst();
-    }
-}

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/AuthorResolver.java

@@ -1,17 +0,0 @@
-package com.baeldung.graphql;
-
-import java.util.List;
-
-import com.coxautodev.graphql.tools.GraphQLResolver;
-
-public class AuthorResolver implements GraphQLResolver<Author> {
-    private PostDao postDao;
-
-    public AuthorResolver(PostDao postDao) {
-        this.postDao = postDao;
-    }
-
-    public List<Post> getPosts(Author author) {
-        return postDao.getAuthorPosts(author.getId());
-    }
-}

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/Mutation.java

@@ -1,25 +0,0 @@
-package com.baeldung.graphql;
-
-import java.util.UUID;
-
-import com.coxautodev.graphql.tools.GraphQLMutationResolver;
-
-public class Mutation implements GraphQLMutationResolver {
-    private PostDao postDao;
-
-    public Mutation(PostDao postDao) {
-        this.postDao = postDao;
-    }
-
-    public Post writePost(String title, String text, String category, String author) {
-        Post post = new Post();
-        post.setId(UUID.randomUUID().toString());
-        post.setTitle(title);
-        post.setText(text);
-        post.setCategory(category);
-        post.setAuthorId(author);
-        postDao.savePost(post);
-
-        return post;
-    }
-}

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/Post.java

@@ -1,49 +0,0 @@
-package com.baeldung.graphql;
-
-public class Post {
-    private String id;
-    private String title;
-    private String text;
-    private String category;
-    private String authorId;
-
-    public String getId() {
-        return id;
-    }
-
-    public void setId(String id) {
-        this.id = id;
-    }
-
-    public String getTitle() {
-        return title;
-    }
-
-    public void setTitle(String title) {
-        this.title = title;
-    }
-
-    public String getText() {
-        return text;
-    }
-
-    public void setText(String text) {
-        this.text = text;
-    }
-
-    public String getCategory() {
-        return category;
-    }
-
-    public void setCategory(String category) {
-        this.category = category;
-    }
-
-    public String getAuthorId() {
-        return authorId;
-    }
-
-    public void setAuthorId(String authorId) {
-        this.authorId = authorId;
-    }
-}

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/PostResolver.java

@@ -1,20 +0,0 @@
-package com.baeldung.graphql;
-
-import com.coxautodev.graphql.tools.GraphQLResolver;
-
-public class PostResolver implements GraphQLResolver<Post> {
-    private AuthorDao authorDao;
-
-    public PostResolver(AuthorDao authorDao) {
-        this.authorDao = authorDao;
-    }
-
-    public Author getAuthor(Post post) {
-        return authorDao.getAuthor(post.getAuthorId()).orElseThrow(RuntimeException::new);
-    }
-
-    public Author getFirst_author(Post post) {
-        return authorDao.getAuthor(post.getAuthorId()).orElseThrow(RuntimeException::new);
-    }
-
-}

spring-boot-modules/spring-boot-libraries/src/main/java/com/baeldung/graphql/Query.java

@@ -1,17 +0,0 @@
-package com.baeldung.graphql;
-
-import java.util.List;
-
-import com.coxautodev.graphql.tools.GraphQLQueryResolver;
-
-public class Query implements GraphQLQueryResolver {
-    private PostDao postDao;
-
-    public Query(PostDao postDao) {
-        this.postDao = postDao;
-    }
-
-    public List<Post> getRecentPosts(int count, int offset) {
-        return postDao.getRecentPosts(count, offset);
-    }
-}