Hello World!
Let’s create a simple Hello World OData service using the SAP Cloud Application Programming Model in six lines of code and in under 2 minutes. You can also download the sample from github.com.
Define a Service
… using CDS.
File world.cds, content:
service say {
function hello (to:String) returns String;
}
Implement it
… for example, using Node.js express.js handlers style.
File world.js, content:
module.exports = (say)=>{
say.on ('hello', req => `Hello ${req.data.to}!`)
}
… or Node.js es6 classes style.
File world.js, content:
module.exports = class say {
hello(req) { return `Hello ${req.data.to}!` }
}
That has limited flexibility, for example, you can register only one handler per event.
Run it
… for example, from your command line:
cds serve world.cds
Consume it
… for example, from your browser: