[jira] [Created] (WW-4874) Asynchronous action method

["Yasser Zamani (JIRA)" <ji...@apache.org>]

Yasser Zamani created WW-4874:
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             Summary: Asynchronous action method
                 Key: WW-4874
                 URL: https://issues.apache.org/jira/browse/WW-4874
             Project: Struts 2
          Issue Type: New Feature
          Components: Core Actions, Dispatch Filter
            Reporter: Yasser Zamani
             Fix For: 2.5.x


User will be able to return {{java.util.concurrent.Callable<String>}} in their actions. Struts when sees such result, runs {{resultCode = result.call();}} in it's own managed thread pool but exits from servlet's main thread with a null result, i.e. gives back main thread to container and leaves response open for concurrent processing. When {{resultCode = result.call();}} returned, Struts calls {{javax.servlet.AsyncContext.dispatch()}} and {{resumes request processing}} within a container's thread servlet to generate the appropriate result for user according to {{resultCode}}.

This adds better support for SLS (Short request processing, Long action execution, Short response processing) via Servlet 3's Async API.

Support of other cases like SSL (e.g. a download server) or LLL(e.g. a video converter server) is still open.



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