Importance of OpenFaces JSF Components
OpenFaces JSF Components are a great way to create rich, interactive web applications. They support multiple languages, provide rich inbuilt libraries and tools, and support internationalization. They also have features like Bean Annotations to validate tasks in the Managed Bean and HTML page, Templates for reusability, and AJAX support to render requests on the server side.
Built-in support for AJAX
If you're using JavaServer Faces to develop a web application, you may want to check out the built-in support for AJAX. This chapter explains how to incorporate Ajax functionality into your JavaServer Faces web application.
The OpenFaces JSF library allows developers to create dynamic Web applications with the help of extended JSF components. The library also features an AJAX framework and supports multiple output formats. This makes it easier to add AJAX-enabled components to your JSF applications.
The pre-release of OpenFaces 3.0 is expected to be available in June. In the meantime, OpenFaces version 2x will be maintained in parallel. The developers plan to retain the same features in both branches. If you're a developer working on a responsive design, you'll be happy to hear that AJAX support is now built-in.
The underlying JSF components are built on Quipu Kit. These components are distributed under a dual-licensing model. You can choose to use the LGPL license, which is free for open-source projects, or the commercial license. You can also use a combination of both licenses.
Pluggable Rendering Capability
The OpenFaces JSF components provide plug-in rendering capability in your web application. These components can be installed in a simple way by including their jars in your project. Once they are installed, using them is very similar to using standard JSF components. They have the same API, and the only difference is that they provide more configuration options. Fortunately, most of the advanced options are optional, and you don't need to implement them. In addition, component declarations are simple and straightforward.
OpenFaces JSF components provide plug-in rendering capability by implementing the RichFaces framework. The framework enables Ajax's capability to be used with JSF. The framework also allows partial rendering. Partial rendering only updates a portion of the page, minimizing the amount of server load.
The main components of the OpenFaces JSF framework are the h.commandButton and h.commandLink tags. Using these tags, the application can navigate between pages and submit form data. A link, on the other hand, sends a bookmarkable GET request. To access a resource on the server, the h.outputLink tag can be used.
Annotations
OpenFaces JSF is a rich set of component libraries that can be used to build web applications. This framework allows you to use the most popular Faces component libraries in your applications, such as PrimeFaces and PrimeJSF. Adding OpenFaces to your project is as simple as dropping a JAR file into /WEB-INF/lib.
OpenFaces JSF uses Facelets, an HTML-like presentation technology. The downside of this approach is that it puts logic in the same place as HTML, a violation of the principle of separation of concerns. Another problem with this technology is that it has an "immediate" attribute, which changes the server-side lifecycle based on the tag it is associated with.
The Annotations feature supports a variety of Java code-completion methods. You can use code completion, rename refactoring, go-to-declaration, and more. It also supports validation and a target attribute.
Model-View-Controller (MVC) design pattern
The Model-View-Controller (MVC), or MVC, design pattern specifies how the application data will be presented to the users. The model stores data in tables, charts, and other objects, while the view contains the presentation and control information. The view provides a visual representation of the data.
This design pattern is often used to build large web applications, where users interact with several components. For example, an information page can edit information about a certain bean. In the same way, multiple pages can view and edit the same information. When the validation logic is repeated across these pages, it breaks the DRY principle.
Using the Model-View-Controller (MVC), or MVC, design pattern for OpenFaces JSF-based applications can improve productivity and consistency. It can help you create a more consistent, reliable, and reusable application.