The <a4j:push> periodically perform AJAX request to
server, to simulate 'push' data.
The main difference between <a4j:push> and
<a4j:poll> components is that <a4j:push> makes request to
minimal code only (not to JSF tree) in order to check the presence of
messages in the queue. If the message exists the complete request will
be performed. The component doesn't poll registered beans but
registers EventListener which receives messages about events.
Attribute 'interval' is used as for poll component. It
specifies the interval in ms. for call push request. Simple example of
Thus, component 'push' uses asynchronous model instead of
There is simple Push example using Runabble interface.
When you hit Start button new Thread will be started and alive
for a minute. It will generate random Uuid once in a ten seconds.
Push component will fire the request after uuid generation event sent
and update the output field displaying new uuid value.