a4j:poll + modalPanel update problem

[cichomski]

Hi!

I've searched the forums, but couldn't find a solution. I need to periodically check for some data, and when it arrives I need to show a modalPanel with that data.

I have a working solution, which is to use a4j:poll to check for data AND rerender the panel's content on every check. This is obviously inefficient.

I need a way to rerender the content when there's actually some data, not on every check. Any hints? Ideally i'd like to do that from JSP, but backing beans would be ok too. How can I access the modalPanel from backing beans ?

[dmitry.demyankov]

You can create content of modalPanel dynamically in your backing bean whenever there's some data to display.. but the modalPanel would still be reRendered after each poll request thought I guess it would require less time if you'll have empty modalPanel tag in jsp code.

[ilya_shaikovsky]

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4099282#4099282

You may use my Push example from that thread. You still need to reRender panel's content. But push is much motre effective in your case.