2 Replies Latest reply on Mar 7, 2011 2:30 PM by Richfacesfan Fanatic

    ViewScoped or Request Scoped

    Richfacesfan Fanatic Newbie

      Hi wich is this best option or this is depend of case?????

       

      ViewScoped

      or

      RequestScoped

      for the backing of page that contain :

                bindings,

                crud actions.

       

      please help¿¿¿

        • 1. ViewScoped or Request Scoped
          Rocky S Master

          RequestScoped:

          The request scope is short-lived. It starts when an HTTP request is submitted

          and ends after the response is sent back to the client. If you place a managed

          bean into request scope, a new instance is created with each request. It is worth

          considering request scope if you are concerned about the cost of session scope

          storage.

           

          Example- Data for error and status messages can often be placed in request scope.

           

          ViewScoped:

          If you have complex data, such as the contents of a table, then request scope

          may not be appropriate since you would need to regenerate the data with

          every request.

           

          A bean in view scope persists while the same

          JSF page is redisplayed.

          As soon as the user navigates to a different page, the bean goes out of scope.

          If you have a page that keeps getting redisplayed, then you can put the beans

          that hold the data for this page into view scope, thereby reducing the size of the

          session scope.

           

          Example- This is particularly useful for Ajax applications.

           

           

          For the backing beans that contain bindings, I would recommend go with ConversationScoped or if it is single page than RequestScoped.

          For crud actions,  if it is an ajax action go with View Scope otherwise Request Scope.

          • 2. ViewScoped or Request Scoped
            Richfacesfan Fanatic Newbie

            thanks , for the explantion

            regardss!!!!

            Richfacesfan