Integrating Smart contracts with SAPUI5

[bhushan_khade]

Introduction : 

Integrating smart contracts with SAPUI5 represents an exciting intersection between blockchain technology and business development. SAPUI5 is a powerful framework for web development that uses SAP's Fiori architecture; Smart contracts, on the other hand, are self-signed contracts in which the agreement between the buyer and the seller is written directly into the rules.

In this article, we explore how we can combine these technologies to create new and secure applications.

To Integrate Ethereum smart contract with SAPUI5 first you need to deploy the smart contract on the blockchain network. After the deployment you will get the ABI (Application Binary Interface) and Address of the smart contract, next step is to consume it into our SAPUI5 application.

Now lets start the journey of Integrating the smart contract with SAPUI5 in which you will able to access the functions from the smart contract and will be able to send and receive the ETH.

In order to access the smart contract first you have to add the 'web3.js' Library in to index.html file to provide access to Ethereum functionality.

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/web3/1.2.7-rc.0/web3.min.js"></script>

Before Accessing smart contract make sure you have installed the Metamask wallet, after that add below function into your controller file to fetch the ethereum account details from the Metamask.

onAccessMetaMask: async function () {
                let account;    
                if (window.ethereum !== "undefined") {
                    try {
                        const accounts = await ethereum.request({ method: "eth_requestAccounts" });
                        account = accounts[0];
                    } catch (error) {
                        console.error("Error accessing MetaMask:", error);
                    }
                } else {
                    console.error("MetaMask is not available.");
                }
            },

Once you have successfully got the account details next step is to access the smart contract, for that you will need the ABI and Address of the deployed Smart contract. then add the below function into the controller.

accessToContract: async function () {
                try {
                    const ABI = ; // Your contract ABI
                    const Address = '0xC09C83cEE7ed3206557b5D5d2b4F8bD69E29Ed12'; // Your contract address
    
                    // Initialize Web3
                    const web3 = new Web3(window.ethereum);
    
                    // Initialize the contract
                    window.contract = new web3.eth.Contract(ABI, Address);
    
                    // Display a message
                    this.getView().byId("text2").setText("Connected to smart contract");
                } catch (error) {
                    console.error("Error initializing contract:", error);
                }
            },

 After completing  above steps you will be able to see the data into our SAPUI5 Application. Once it is done you can call any required function from smart contract.

Output :

Conclusion :

I hope this Blog contains the process and configuration needed for Integrating Smart contracts with SAP UI5 using Business Application Studio which will help to customize different application.

Thanks and Regards,

Bhushan Khade