what is none scope bean and when to use it?

Question

could some explain what a none scope is and purpose of it?

Suppose if i have a bean in

request scope as r1

session scope as s1

application scope a         


        

Answer 1

I'm using @nonescoped when my "view logic" dont need to be in any scope but be referenced by another ManagedBean.

I'm working with Liferay, as I want to make my architecture and design independent of liferay, I create my services interfaces and Dto, but when you need to persistence data, Liferay need that the companyId and companyGroupId be sended from the view layer (in this case JSF).

To maintain independence, I did a "Adapter pattern" creating a ServiceLayer ManagedBean with @noneScope with an interface independent from Liferay. This way I can get the companyId and the companyGroupId needed by the Liferay Apis.

The advantage of using @noneScope is that you can use it as a @ManagedProperty in any bean of any scope.