Bean state saving / conversation

[Walter.Mourao]

Hi folks,
does PrimeFaces has something to save the current state of a bean, like the Tomahawk's <t:saveState/> or some kind of conversational scope, like the Trinidad's pageFlowScope ? If not, what do you suggest I use to get the same functionality ?

Thanks in advance,

[cagatay.civici]

Hi Walter,

Since PrimeFaces is UI specific we don't have any plans to add features like that. However you have many alternatives;

- PrimeFaces Optimus ViewScope
- Seam ViewScope-ConversationScope
- Spring WebFlow
- CDI (Java EE 6) Conversation Scope
- JSF 2.0 Built-in View Scope
- MyFaces Orchestra

Same problem solved too many times

[Turjakas]

I'm using Spring to manage my beans and therefore I'd also like to use Spring to manage the scope of the beans. The built-in scopes such as "request" and "session" work fine, but I'm still missing conversation, view and probably even flash scope.

Can anyone provide me ideas on how to implement these as Spring custom scopes or if there are custom scope implementations for Spring that integrate with the new JSF 2.0 scopes?

I cannot use Spring Web Flow as I have already found it incompatible with the AJAX features of PrimeFaces or any other decent JSF component library. Also, Web Flow 2.x has no support JSF 2.0.

[cagatay.civici]

Yes as core Spring doesn't handle JSF integration well it only provides request, session and application scopes. For view scope you can use;

http://www.jroller.com/RickHigh/entry/a ... view_scope

For flash and conversation scope, you need to implement it yourself. There's also MyFaces orchestra project that gives you view and conversation scopes but I'm not sure if it's compatible with JSF 2.0.

Nowadays the hot topic is CDI as it enhanced JSF 2.0 a lot with lots of new features but since you're on the spring side, it's not applicable.

Another alternative is to use seam for JSF related stuff and use seam's spring integration module. I never tried this though.

I'd stay away from spring webflow as it causes more problems than it solves, spring faces project also seems like a proof of concept work, not production ready.

[Oleg]

MyFaces Orchestra compatible with JSF 2. It's even independ on UI Framework and it works with Spring used as replacement for Managed Bean Creation Facility.

[cagatay.civici]

Good to know that it's compatible with JSF 2.

[bluesturbo]

Everyone, would strongly suggest using the JEE 6 "CDI" JSR-299 standard. Just google it to see all the information, works perfect with JSF 2. Reza has a good article: http://www.theserverside.com/tt/article ... ninJavaEE6

When you realize how JSF 2 with JSR-299 works and (Comet) AJAX push, it's like developing a native client application!

Seam 3 is going to be built on JSR-299 (inspired by Gavin King).

Think Cagatay was going to make a sample - PrimeFaces/Weld/JPA application.

[cagatay.civici]

CDI looks very cool, there's already some work on CDI-PrimeFaces example which will be published soon.

[henry_ken]

any progress on the example of CDI and PrimeFaces integration?

i tried to use ConversationScoped with PrimeFaces Ajax call, but it does not work since it cannot retrieve the conversation id from the request.

[cagatay.civici]

There is an article here;

http://olex.openlogic.com/wazi/2010/get ... with-jee6/

Hope this helps;