Examples of AsyncContext

javax.servlet.AsyncContext

Class representing the execution context for an asynchronous operation that was initiated on a ServletRequest.

An AsyncContext is created and initialized by a call to {@link ServletRequest#startAsync()} or{@link ServletRequest#startAsync(ServletRequest,ServletResponse)}. Repeated invocations of these methods will return the same AsyncContext instance, reinitialized as appropriate.

In the event that an asynchronous operation has timed out, the container must run through these steps:

Invoke, at their {@link AsyncListener#onTimeout onTimeout} method, all{@link AsyncListener} instances registered with the ServletRequeston which the asynchronous operation was initiated.
If none of the listeners called {@link #complete} or any of the{@link #dispatch} methods, perform an error dispatch with a status codeequal to HttpServletResponse.SC_INTERNAL_SERVER_ERROR.
If no matching error page was found, or the error page did not call {@link #complete} or any of the {@link #dispatch} methods, call{@link #complete}.

@since Servlet 3.0

org.glassfish.jersey.server.internal.process.AsyncContext

Injectable asynchronous processing context that can be used to control various aspects of asynchronous processing of a single request. @author Marek Potociar (marek.potociar at oracle.com)

    private final static Logger LOG = Logger.getLogger(CometEscalator.class.getName());


    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        AsyncContext startAsync = request.startAsync();
        String channel = extractChannel(request.getRequestURI());
        events.fire(new BrowserWindow(startAsync, channel));
        LOG.fine("Event sent for channel " + channel);
    }

        }


        @Override
        public Response apply(final ContainerRequestContext req) {
            // Suspend current request
            final AsyncContext asyncContext = asyncContextProvider.get();
            asyncContext.suspend();


            Executors.newSingleThreadExecutor().submit(new Runnable() {


                @Override
                public void run() {
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException ex) {
                        ex.printStackTrace(System.err);
                    }


                    // Returning will enter the suspended request
                    asyncContext.resume(Response.ok().entity(responseContent).build());
                }
            });


            return null;
        }

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Examples of AsyncContext

Examples of javax.servlet.AsyncContext

Examples of org.glassfish.jersey.server.internal.process.AsyncContext