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https://issues.apache.org/jira/browse/ISIS-2296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17049243#comment-17049243
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ASF subversion and git services commented on ISIS-2296:
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Commit e1e4836544b4c39e51fbf69784a29ce98ef5226f in isis's branch 
refs/heads/master from Andi Huber
[ https://gitbox.apache.org/repos/asf?p=isis.git;h=e1e4836 ]

ISIS-2296: removing obsolete comments

> @RequestScoped isn't honoured ... also use @TransactionScope instead of our 
> home-grown WithTransactionScope
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: ISIS-2296
>                 URL: https://issues.apache.org/jira/browse/ISIS-2296
>             Project: Isis
>          Issue Type: Bug
>            Reporter: Daniel Keir Haywood
>            Assignee: Andi Huber
>            Priority: Critical
>             Fix For: 2.0.0-M3
>
>
> @RequestScoped isn't honoured (don't see new instance each request)
> The services are:
>  * AcceptHeadersService
>  * CommandContext
>  * InteractionContext
>  * Scratchpad
>  * PublisherDispatchServiceDefault
> That's a big problem... I would expect them to be instantiated (and call 
> @PostConstruct/@PreDestroy) for each request.  As it is, they seem to be 
> singletons.
> Also, these three further domain services are annotated with @RequestScoped, 
> but also implement WithTransactionScope:
>  * ChangedObjectService
>  * QueryResultsCacheDefault
>  * MetricsServiceDefault
> This callback is being called, so they are not memory leaking over time, but 
> they are not thread-safe for concurrent transactions.  At any rate, we should 
> get rid of this home-grown transaction stuff and instead use Spring's 
> @TransactionScope
> ~~~
> Also, AcceptHeadersServiceForRest (the RO implementation) although it is 
> annotated with @RequestScoped, seems to have its own thread-local.  This 
> could probably be removed if it can be made to be properly request-scoped.
>  
>  



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