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Javier Paniza

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This article tries to demonstrate that Java can be more productive than Ruby. We are going to develop the same application of the article Rolling with Ruby on Rails Revisited (part 1 [1] and part 2 [2]) but using POJO [3]s annotated with JPA [4] and a Model Driven Framework, OpenXava [5] in this case. The result is that with less code, and less time you obtain a more powerful application. Ruby and rails: The regressive framework Ruby on rails [6] is so elegant, so easy, so productive. I cannot avoid read and heard continuously these comments. For example, the article Rolling with Ruby on Rails Revisited of Bill Walton says: “What would you think if I told you that you can develop a web application at least ten times faster with Rails than you can with a typical Java framework?” Oops! Ten times faster! Well, after these comments I decided to learn Ruby on Rails. I ne... (more)

OpenXava 3.1.3: Productivity and Flexibility for Java EE

OpenXava 3.1.3 is a framework to develop Java Enterprise applications in a different way: OpenXava avoids MVC. It's a JPA Application Engine in that you provide only your POJOs annotated with JPA and you obtain an application ready for production. Productivity With OpenXava, you only need to write your model, POJOs with annotations. You do not need to write the view, and the controller (for CRUD, printing, etc) is reused. That is, you only write a class as this one: @Entity public class Teacher { @Id @Column(length=5) @Required private String id; @Column(length=40) @Required privat... (more)

OpenXava 4.3: Rapid Java Web Development

OpenXava is a framework for Rapid Java Web Development, well-suited for business and database oriented applications. OpenXava allows you develop applications just by writing simple domain classes with Java or Groovy. The user interface is generated automatically in runtime, without code generation. OpenXava 4.3 adds support for total properties in collections, it has a new editor for HTML_TEXT stereotype, add info and warning messages and some other useful new features. Total properties in collections Now you can use square brakets in @ListProperties to asociate one or more prop... (more)

OpenXava 3.1.4: Open Source Framework to Develop WebSphere Portal Applications

OpenXava 3.1.4 is an open source framework to rapid development of Portlet Enterprise applications deployable in WebSphere Portal 6.1. With OpenXava, you only need to write your model, POJOs and Java 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. Look at the demos. If you current applications use JPA entities, ... (more)

OpenXava 4.0: Rapid Java Web Development

OpenXava is a framework for rapid development of business applications using Java. It is easy to learn and one can have an application up in no time. At the same time, OpenXava is extensible, customizable and the application code is structured in a very pure object oriented way, allowing you to develop arbitrarily complex applications. The OpenXava approach for rapid development differs from those that use visual environments (like Visual Basic or Delphi) or scripting (like PHP). Instead, OpenXava uses a model-driven development approach, where the core of your application are J... (more)