Question

I am using PrimeFaces UI library and JSF 2.

I have a backing bean:

public class JobMgmtBean extends ClientBeanBase implements Serializable

and

public class ClientBeanBase extends BeanBase

(so inheritance is JobMgmtBean:ClientBeanBase:BeanBase).

I wanted to set my JobMgmtBean from request scoped to view scoped, but after a while my sessionVars which is defined in BeanBase becomes null and the bean is not functional anymore.

I initialize sessionVars in the BeanBase like this:

protected Map<String,Object> sessionVars = null;

ex = FacesContext.getCurrentInstance().getExternalContext();
sessionVars = ex.getSessionMap();

I refresh some of my PrimeFaces UI components on the page every 5 seconds (using <p:poll interval="5"...>), and after a few refreshes sessionVars becomes null.

Why does this happen?

Answer 1

ViewScoped beans require objects to be Serialized, and my class extends many classes with too many object which all need to be Serialized which is not possible. This means that I can not use ViewScoped at all here.