Additions on Java & Google Web Tollkit Ecommerce application

Hello people, I have started the design and implementation of e-commerce application with payments system through credit cards and Paypal and also application of automated display system of products in social networks. System includes the following innovations: 1. Implementation will take place in Rich Internet Application Environment and it will be a Single Page Application, with functional features corresponding to those that exist in desktop applications. It will consist of two web applications: a. Management system of products, customers and orders b. Customers interface system 2. System will offer the possibility to the administrator of the e-commerce application to display selected products from the application through periodic posts to facebook. The automated posts will take place in time frames that will be determined through a special interface of the application. Implementation will be done in Java, Google Web Toolkit. I use MySQL (ATTACHED) and it will include summary comparative research between RestFB, Spring Social Facebook and Facebook4J and it will choose the most suitable API for the implementation of the facebook interface. Deliverables: Any correction on my work is welcomed but I surely need the implementation in Java with the use of Google Webkits and a description of your design so I can understand how you did it. I attach the model (ATTACHED PDF) and the sql dump (ATTACHED SQL)