OpenXava 3.1 is a framework to develop AJAX Java Enterprise applications in a different way: OpenXava avoids MVC. You provide only simple Java classes annotated with JPA and you obtain an application ready for production.
With OpenXava, you only need to write your model, POJOs and Java 5 annotations. You do not need to write the view, and the controller (for CRUD, printing, etc) is reused. And from that you’ll have an application for CRUD, report generation in PDF, export to Excel, searching, sorting, validations etc. You only need to write a simple Java class, no XMLs, no JSPs and no code generation.
The main new feature of 3.1 is that generates AJAX appplications, in this way if you update to OX3.1, your OX (3.x, 2.x, or 1.x) applications will be AJAX without touching a single line of code. In the other hand, if you application is not OX but you use JPA entities, you can move your JPA code to an OpenXava application and obtain an AJAX portal application easily.
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