RenderScoped VS ViewScoped

[bitec]

Hi.

I use CDI ViewScope intensively (the one, offered by Steven Verborgh: http://www.verborgh.be/articles/2010/01/06/porting-the-viewscoped-jsf-annotation-to-cdi/) but in production I face memory problems: sessions grow rapidly and take much memory. In business purpose I have pretty long session timeout (about 7 hours). I tried to diminish the number ov JSF views and logical views in session (

com.sun.faces.numberOfViewsInSession=5

and

com.sun.faces.numberOfLogicalViews=10

) but this has not resulted in some prominent success.

In this case I'm thinking about RenderScope, suggested by Seam faces. Seems these beans are destroyed sooner, than view scoped - as far as written in documentation. Can anyone say something about shortcomings and advantages of renderScope in comparison to viewScope? Are there any hidden obstacles of using this scope?

Thanks.

[bitec]

Unfortunatelly renderScope does not work for me... For some reasons every postback generates the new beans. This code:

       ConcurrentHashMap<Contextual<?>, Object> map = (ConcurrentHashMap<Contextual<?>, Object>)    getCurrentRenderContext()
                .get(COMPONENT_MAP_NAME);

        if (map == null) {
            map = new ConcurrentHashMap<Contextual<?>, Object>();
            getCurrentRenderContext().put(COMPONENT_MAP_NAME, map);
        }

from RenderScopedContext.getComponentInstanceMap() always creates new map on each postback request. That's why all  renderScoped beans are recreated on each ajaxian request.

[marcosaps]

Use the same @javax.faces.bean.ViewScoped with Seam Faces. It is working for me.

Marcos

[bitec]

Any thoughts about why render scope didn't work? I tried both Glassfish 3.1 and 3.11 and Seam Faces 3.02, but the context is still lost on postback.

Thanks.

[marcosaps]

Anton Lisovenko wrote on Sep 27, 2011 04:17:


Any thoughts about why render scope didn't work? I tried both Glassfish 3.1 and 3.11 and Seam Faces 3.02, but the context is still lost on postback.

Thanks.

No. I didn't even tried the render scope and I'm not thinking of doing this. I went directly to the @ViewScoped, as I was translating from JSF to CDI.

Marcos

[bitec]

Marcos, I'm asking those, who tried, I understood, that you don't use render scope.

So, is there anyone with the same problems with it? Maybe Seam Faces contributors could advise smth.

Thanks.