Jello is an end-to-end Java application framework optimized for Google App Engine including comprehensive Data Authorization model, a powerful RESTful engine, and out-of-the-box UI views. Jello's REST offers a clean, and simple to follow, JSON format. Its protocol schema follows the OData specification. Overview The following components are part of Jello Framework: Data Model: Jello uses JDO (Java Data Objects) as the underlying ORM layer to map Jello Entities to the database. Data Access Control: One of Jello's key features is its inline Authorization Model. With Jello you can assign different access levels for data elements at any resolution (Namespaces, Entities, Fields, Actions) and specify who is authorized to access the data via the REST API. RESTful API Admin UI views References External links Developer Guide Getting started with Jello Jello Tutorials & Code Examples Jello RESTful Web Services API Jello Entity Definition Jello Authorization Model Java enterprise platform Web service specifications