[jira] [Updated] (PROTON-1241) proton::messaging_handler is not copyable (because it contains a pn_unique_ptr)

["Justin Ross (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PROTON-1241?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Justin Ross updated PROTON-1241:
--------------------------------
    Fix Version/s: 0.14.0

> proton::messaging_handler is not copyable (because it contains a pn_unique_ptr)
> -------------------------------------------------------------------------------
>
>                 Key: PROTON-1241
>                 URL: https://issues.apache.org/jira/browse/PROTON-1241
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: cpp-binding
>            Reporter: Andrew Stitcher
>            Assignee: Cliff Jansen
>             Fix For: 0.14.0
>
>
> One fundamental of the Proton C++ API is that the user supplies their own handler class.
> We should strive in our implementation to limit the API user as little as possible. Unfortunately , because of some historical implementation decisions the messaging_handler class contains a single member which is not copyable (this is a unique_ptr to the associated internal messaging_adapter).
> This stops the user being able to natural things with her own classes like:
> {noformat}
> class MyHandler: public messaging_handler {
> ...
> }
> ...
> auto h = MyHandler{};
> ...
> Myhandler g;
> auto i = g;
> {noformat}
> The user knows what she wants to do with her classes and there is no real intrinsic requirement for the messaging_handler to keep hold of a messaging_adapter. So we need to get out of the users way and remove the pn_unique_ptr from messaging_handler.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@qpid.apache.org
For additional commands, e-mail: dev-help@qpid.apache.org