GraphQL Product API

Overview

This API provides GraphQL-based CRUD operations for managing products, including support for queries, mutations, and pagination.

Features

• Get all products with pagination support (offset-based pagination)
• Get a product by ID
• Create a new product
• Update an existing product
• Delete a product

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Installation & Setup

1️⃣ Clone the Repository

 git clone https://github.com/Hariharan1893/Inventory-Service-with-Springboot-GraphQL.git
 cd Inventory-Service-with-Springboot-GraphQL

2️⃣ Build & Run

mvn clean install
mvn spring-boot:run

The API will be accessible at:

http://localhost:8080/graphql

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GraphQL Schema

type Product{
	id: Int,
	name: String,
	category: String,
	price: Int,
	stock: Int
}

type Query{
	getAllProducts:[Product]
	getProductById(id:Int):Product
	getProductsWithPagination(limit: Int, offset: Int):[Product]
}

type Mutation {
  createProduct(name: String, category: String, price: Int, stock: Int): Product
  updateProduct(id: Int, name: String, category: String, price: Int, stock: Int): Product
  deleteProduct(id: Int): Boolean
}

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API Endpoints

1️⃣ Get All Products (With Pagination)

GraphQL Query

query {
    getAllProducts(limit: 5, offset: 0) {
        id
        name
        category
        price
        stock
    }
}

Response

{
    "data": {
        "getAllProducts": [
            {
                "id": 1,
                "name": "Smartwatch",
                "category": "Wearable",
                "price": 8999,
                "stock": 25
            },
            ...
        ]
    }
}

2️⃣ Get Product by ID

GraphQL Query

query {
    getProductById(id: 1) {
        id
        name
        category
        price
        stock
    }
}

3️⃣ Create a Product

GraphQL Mutation

mutation {
    createProduct(name: "VR Headset", category: "Gaming", price: 12999, stock: 10) {
        id
        name
    }
}

4️⃣ Update a Product

GraphQL Mutation

mutation {
    updateProduct(id: 1, name: "Smartwatch Pro", category: "Wearable", price: 9999, stock: 30) {
        id
        name
    }
}

5️⃣ Delete a Product

GraphQL Mutation

mutation {
    deleteProduct(id: 1)
}

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📞 Contact

For queries or support, feel free to reach out!

🚀 Happy Coding! 🎯