Richfaces Architecture doubts

[bruno.arruda]

Hi,

I've using Richfaces for some years now and have been following this project since its born on a4j on exadell. I have no doubt on its quality and its support cause I've depended on it severall times and was very happy at the end. The problem is that I'm working on a huge company and people are about to choose a component library to use with JSF with ajax enabled. I've been reading the RIchfaces documentation to try to understand a little more about its internal architecture, but there're some things I cannot place together, they are:

1- I know Richfaces does not use the Direct-to-DOM model, does it use which model? I know the filter functions, but how it compares to the Direct-to-DOM model in terms of pros and cons.

2-Which model is more aligned with the JSF 2.0 specification?


Those are questions I am not able to answer yet, and it is really important to me so I can stand for RIchfaces on the discussion.

Thanks very much for your time.

Best Regards,

Bruno Arruda

[joachimhb]

Well, Richfaces has the ajaxSingle options, which I guess is what you are after. Reading on the IceFaces website, this seems to be what they mean when they talk about "Direct-to-DOM".

[nimo22]

Topics already exists about that:

See for example:
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=150266

[alexsmirnov]

JSF 2.0 uses the partial rendering model, the same approach as Oracle ADF and Richfaces are. Really, that was introduced by these projects and ICEFaces adopt that for direct-to-dom rendering. Direct-to-dom model simplified application development but for memory consumption and performance costs. Take a look for article at http://java.dzone.com/articles/performance-report-server-side about that.
Therefore, to decide proper framework for your project you should realize what is more important for final application, development time or performance.
For JSF-2.0 based RichFaces version we gouing to support event-based update model similar to Swing models that could simplifie interface devlopment without performance impact.
Take a look for http://alexsmirnov.wordpress.com/2009/05/28/javafx-as-jsf-2-0-vdl for even more ideas how it could work.