[cdi-dev] Clarify scopes and serialization

[Jozef Hartinger]

Can you elaborate? If a bean has a normal scope (passivating), it may 
need to be passivated. Are you talking about using a serialization tool 
that does not require objects to implement Serializable and using such 
tool to passivate a context?

Jozef

On 02/01/2015 04:44 PM, Romain Manni-Bucau wrote:
>
> Hi
>
> +1 to clarify it. All normal scope dont need Serializable constraint - 
> even session scope - and it makes sense to not respect it in a lot of 
> apps without preventing these beans to be serializable thans their 
> proxies.
>
> Best IMO is to either remove it or to allow a scope serializer service 
> to be specified to keep it portable.
>
> Wdyt?
>
> Le 1 févr. 2015 13:36, "Antonio Goncalves" 
> <antonio.goncalves at gmail.com <mailto:antonio.goncalves at gmail.com>> a 
> écrit :
>
>     Hi all,
>
>     I was reading the CDI 1.2 spec and couldn't clearly find the way
>     serialization and scopes work. The only explicit sentence I found
>     was :
>
>
>     /1.3.1. JSF example/
>     /The @SessionScoped annotation defined in Section 2.4.1, “Built-in
>     scope types” is a scope
>     /
>     /type that specifies the lifecycle of instances of Login. *Managed
>     beans with this scope must be*/
>     /*serializable.*/
>
>
>     The Weld documentation is a bit more explicit :
>
>     /5.2. Built-in scopes/
>     /*Managed beans with scope @SessionScoped or @ConversationScoped
>     must be serializable*, since the container passivates the HTTP
>     session from time to time./
>
>
>     And in the Java EE Tutorial we find
>     (http://docs.oracle.com/javaee/6/tutorial/doc/gjbbk.html) :
>
>     *Beans that use session, application, or conversation scope must
>     be serializable*, but beans that use request scope do not have to
>     be serializable.
>
>
>     This even made be doubt about the application scope ?!?
>
>
>     Any way, could we clarify this in the CDI spec ?
>
>
>     -- 
>     Antonio Goncalves
>     Software architect, Java Champion and Pluralsight author
>
>     Web site <http://www.antoniogoncalves.org> | Twitter
>     <http://twitter.com/agoncal> | LinkedIn
>     <http://www.linkedin.com/in/agoncal> | Pluralsight
>     <http://pluralsight.com/training/Authors/Details/antonio-goncalves> |
>     Paris JUG <http://www.parisjug.org> | Devoxx France
>     <http://www.devoxx.fr>
>
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