On 4/27/06, 王曾wang_zeng <[EMAIL PROTECTED]> wrote:
Thank you,Craig. What do you mean by setup action? Is that the kind of action which grabs some data, do some encapsilation work, and stuff them into JSP scopes.
Yes, that's what I meant. You say we can archive the goal with shale as well as without shale. I
remeber that between phases a Phase Event will be fired. When JSF skips directly to the Render Response phase, can I use phase event listener to grab data ?
Yes. The way to do this would be to define a phase listener for Render Response phase, and do your data collection in the beforePhase event handler. You also have to remember that your listener is going to receive beforePhase() calls for *all* simultaneously active requests, not just the one page you might be interested in. And, don't forget to deregister yourself as a listener when the request completes, so you don't create a memory leak. Is this approach what you think is painful? I don't know if I would call it painful, but it is certainly a lot of complexity to worry about. It is much simpler to have a framework do the hard stuff for you. Indeed, a phase listener is how Shale itself calls the relevant application event calbacks -- but it shares a single listener instance across all requests, and only makes the callback calls on the relevant backing bean -- you don't have to worry about anything except "what data do I need to set up for *this* request." --
Wang Zeng
Craig
