In Teiid Designer 7.4, a new feature was implemented that allows you to expose your VDBs RESTfully using a generated RESTEasy war. You can map virtual procedures in your VDBs to GET,POST,PUT or DELETE methods providing RESTful CRUD access to your federated data without writing a line of code.

You can check out the steps here: Teiid Designer Guide - RESTful VDBs

Enjoy!