neo4J

README.md

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+Start Neo4J:
+
+```
+docker run \
+  --name my-neo4j-container2 \
+  --publish=7474:7474 --publish=7687:7687 \
+  --env NEO4J_AUTH=neo4j/password \
+  --volume=$HOME/neo4j/data:/data \
+  neo4j:latest
+
+```
+Neo4J started:
+<img width="1259" alt="image" src="https://github.com/rahulvaish/SpringBoot-Java/assets/689226/c5ec7cb9-1a2c-426b-880b-c216a72cd08d">
+
+
+
+<img width="1299" alt="image" src="https://github.com/rahulvaish/SpringBoot-Java/assets/689226/c95209ff-4fcd-49b0-99be-759c652fde0b">
+
+
+<img width="1728" alt="image" src="https://github.com/rahulvaish/SpringBoot-Java/assets/689226/6cb77bf7-8184-4544-98ec-4c0ae390576f">

SpringBootNeo4J/.gitignore

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+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+spring-neo4j/db/*
+spring-neo4j/mvnw
+spring-neo4j/mvnw.cmd

SpringBootNeo4J/.mvn/wrapper/maven-wrapper.properties

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+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.1/apache-maven-3.9.1-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar

SpringBootNeo4J/docker-compose.yml

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+version: "3.8"
+services:
+  neo4j:
+    image: neo4j:4.4.20-community
+    ports:
+      - 7474:7474
+      - 7687:7687
+    restart: unless-stopped
+    environment:
+      - NEO4J_AUTH=neo4j/password
+    volumes:
+      - ./db/data:/data
+      - ./db/conf:/conf
+      - ./db/logs:/logs
+      - ./db/plugins:/plugins

SpringBootNeo4J/pom.xml

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+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.2.4</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.spring.neo4j</groupId>
+	<artifactId>SpringBootNeo4J</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>SpringBootNeo4J</name>
+	<description>Demo project for Spring Boot</description>
+	<properties>
+		<java.version>17</java.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-neo4j</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-graphql</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+			<scope>runtime</scope>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-webflux</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.graphql</groupId>
+			<artifactId>spring-graphql-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<version>1.18.26</version>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

SpringBootNeo4J/src/main/java/com/spring/neo4j/Application.java

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+package com.spring.neo4j;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.neo4j.config.EnableNeo4jAuditing;
+import org.springframework.data.neo4j.repository.config.EnableNeo4jRepositories;
+
+@SpringBootApplication
+@EnableNeo4jAuditing
+@EnableNeo4jRepositories(basePackages = {"com.spring.neo4j.repository"})
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}

SpringBootNeo4J/src/main/java/com/spring/neo4j/controller/AuthorController.java

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+package com.spring.neo4j.controller;
+
+import com.spring.neo4j.repository.node.Author;
+import com.spring.neo4j.service.AuthorService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("author")
+public class AuthorController {
+
+    private final AuthorService authorService;
+
+    @Autowired
+    public AuthorController(AuthorService authorService) {
+        this.authorService = authorService;
+    }
+
+
+    @GetMapping
+    public List<Author> getAllAuthors(){
+        return authorService.getAllAuthors();
+    }
+
+    @PostMapping
+    public Author addAuthor(@RequestBody Author author){
+        return authorService.addAuthor(author);
+    }
+
+    @PutMapping
+    public Author updateAuthor(@RequestBody Author author)  {
+        return authorService.updateAuthor(author);
+    }
+
+    @DeleteMapping("/author/{authorId}")
+    public void deleteAuthor(@PathVariable Long authorId){
+         authorService.deleteAuthor(authorId);
+    }
+
+}

SpringBootNeo4J/src/main/java/com/spring/neo4j/repository/AuthorRepository.java

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+package com.spring.neo4j.repository;
+
+import com.spring.neo4j.repository.node.Author;
+import org.springframework.data.neo4j.repository.Neo4jRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface AuthorRepository extends Neo4jRepository<Author, Long> {
+}

SpringBootNeo4J/src/main/java/com/spring/neo4j/repository/node/Author.java

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+package com.spring.neo4j.repository.node;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.neo4j.core.schema.GeneratedValue;
+import org.springframework.data.neo4j.core.schema.Id;
+import org.springframework.data.neo4j.core.schema.Node;
+import org.springframework.data.neo4j.core.schema.Relationship;
+
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Node("Author")
+public class Author {
+    @Id
+    @GeneratedValue
+    Long id;
+    String name;
+    @Relationship(type = "AUTHORED", direction = Relationship.Direction.INCOMING)
+    List<Book> books;
+}

SpringBootNeo4J/src/main/java/com/spring/neo4j/repository/node/Book.java

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+package com.spring.neo4j.repository.node;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.neo4j.core.schema.GeneratedValue;
+import org.springframework.data.neo4j.core.schema.Id;
+import org.springframework.data.neo4j.core.schema.Node;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Node("Book")
+public class Book {
+    @Id
+    @GeneratedValue
+    Long id;
+    String name;
+
+}

SpringBootNeo4J/src/main/java/com/spring/neo4j/service/AuthorService.java

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+package com.spring.neo4j.service;
+
+import com.spring.neo4j.repository.AuthorRepository;
+import com.spring.neo4j.repository.node.Author;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class AuthorService {
+    private final AuthorRepository authorRepository;
+
+    @Autowired
+    public AuthorService(AuthorRepository authorRepository) {
+        this.authorRepository = authorRepository;
+    }
+
+    public List<Author> getAllAuthors(){
+        return authorRepository.findAll();
+    }
+
+    public Author addAuthor( Author author){
+        return authorRepository.save(author);
+    }
+
+    public Author updateAuthor(Author author)  {
+      Optional<Author> authorFromDB=  authorRepository.findById(author.getId());
+      if(authorFromDB.isPresent()){
+        Author authorFromDBVal = authorFromDB.get();
+        authorFromDBVal.setBooks(author.getBooks());
+        authorFromDBVal.setName(author.getName());
+        authorRepository.save(authorFromDBVal);
+      }else{
+          return null;
+      }
+      return author;
+    }
+
+    public void deleteAuthor(Long id) {
+        authorRepository.deleteById(id);
+    }
+}

SpringBootNeo4J/src/main/resources/application.yml

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+spring:
+  neo4j:
+    uri: bolt://localhost:7687
+    authentication:
+        username: neo4j
+        password: password
+
+
+server:
+  port: 8030

SpringBootNeo4J/src/test/java/com/spring/neo4j/SpringNeo4jApplicationTests.java

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+package com.spring.neo4j;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class SpringNeo4jApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}