[jira] [Resolved] (CXF-7146) Support void return types when using the async proxy-based client API

["Sergey Beryozkin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CXF-7146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Beryozkin resolved CXF-7146.
-----------------------------------
    Resolution: Duplicate

> Support void return types when using the async proxy-based client API
> ---------------------------------------------------------------------
>
>                 Key: CXF-7146
>                 URL: https://issues.apache.org/jira/browse/CXF-7146
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>            Reporter: John Poth
>
> It is currently impossible to register a generic _InvocationCallback<Object>_ when invoking a method that returns void. This is due to a [check|https://github.com/apache/cxf/blob/master/rt/rs/client/src/main/java/org/apache/cxf/jaxrs/client/ClientProxyImpl.java#L797] that isn't satisfied when the _methodReturnType_ is void. I propose to add the following case
> {code}
> Object.class == callbackRespClass
> {code}
> And let the user handle the logic. 
> I also propose to remove the condition
> {code}
> Response.class == callbackRespClass
> {code}
> Which will lead to failure when [casting|https://github.com/apache/cxf/blob/master/rt/rs/client/src/main/java/org/apache/cxf/jaxrs/client/JaxrsClientCallback.java#L76] to a return type upon completion. I will provide a PR.
> [~sergey_beryozkin] sorry for the confusion.



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