GraphQL CRUD Application

This project is a simple CRUD application built with Spring Boot and GraphQL, showcasing how to manage products using modern GraphQL queries and mutations. The project adheres to clean code principles and uses H2 database for development.

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Table of Contents

• Features
• Technologies Used
• Getting Started
  • Prerequisites
  • Installation
• Usage
  • GraphQL Endpoints
  • Testing with Postman
  • GraphiQL Interface

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Features

• GraphQL Queries and Mutations for CRUD operations:
  • Create, Read, Update, Delete products.
• Integrated GraphiQL interface for testing.
• H2 in-memory database for easy development and testing.
• Follows clean code and best practices.

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Technologies Used

• Spring Boot (v3.x)
• Spring Data JPA
• GraphQL Java
• H2 Database
• Lombok
• Maven

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Getting Started

Prerequisites

1. Java 17 or higher installed on your system.
2. Maven (v3.x or higher) installed.
3. Recommended IDE: IntelliJ IDEA.

Installation

1. Clone the repository:

   git clone https://github.com/charlybutar21/springboot-graphQL.git
   cd springboot-graphQL

2. Build the project:

   mvn clean install

3. Run the application:

   mvn spring-boot:run

4. Access the application:

   • GraphQL endpoint: http://localhost:8080/graphql
   • GraphiQL interface: http://localhost:8080/graphiql?path=/graphql

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Usage

GraphQL Endpoints

1. Get All Products

   query {
     getAllProducts {
       id
       name
       description
       price
     }
   }

2. Get Product By ID

    query {
      getProductById(id: "1") {
        id
        name
        description
        price
      }
    }

3. Create Product

    mutation {
      createProduct(input: {
        name: "New Product",
        description: "Product description",
        price: 100.0
      }) {
        id
        name
        description
        price
      }
    }

4. Update Product

   mutation {
     updateProduct(id: "1", input: {
       name: "Updated Product",
       description: "Updated description",
       price: 150.0
     }) {
       id
       name
       description
       price
     }
   }

5. Delete Product

   mutation {
     deleteProduct(id: "1")
   }

Testing with Postman

1. Import the postman-collection.json.
2. Use the pre-defined queries and mutations for testing.

GraphiQL Interface

1. Open http://localhost:8080/graphiql?path=/graphql.
2. Use the interactive UI to test queries and mutations.