[jira] [Updated] (DELTASPIKE-293) Improve the ViewScopedContext by observing ServletContext and HttpSession lifecycle events.

["Gerhard Petracek (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DELTASPIKE-293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gerhard Petracek updated DELTASPIKE-293:
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    Remaining Estimate:     (was: 72h)
     Original Estimate:     (was: 72h)
    
> Improve the ViewScopedContext by observing ServletContext and HttpSession lifecycle events.
> -------------------------------------------------------------------------------------------
>
>                 Key: DELTASPIKE-293
>                 URL: https://issues.apache.org/jira/browse/DELTASPIKE-293
>             Project: DeltaSpike
>          Issue Type: Improvement
>          Components: JSF-Module
>    Affects Versions: 0.4-incubating
>            Reporter: Radu Creanga
>             Fix For: 0.5-incubating
>
>
> The CDI specification states that Context implementations are responsible for destroying instances it creates. The current ViewScopedContext relies on PreDestroyViewMapEvents to be notified when a view map is destroyed. But, the JSF 2.0 and 2.1 spec only fire this event when a view map is replaced. This means that in most cases, instances created by ViewScopedContext are not properly destroyed. The ViewScopedContext should be observing ServletContext and HttpSession lifecycle events instead in order to ensure that all instances it creates are properly destroyed. Visible improvements resulting out of this would be that the @PostConstruct method of @ViewScoped beans is invoked. Additionally, this will probably result in better memory usage, since instances that are not properly destroyed are not eligible for GC.

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