I am pretty much a new bee at flex and action scripting. I am creating a web app, and one of the requirements is that it has a messaging system. Not chat session, but something similar to email.
user A and B are logged at two different location. But are unaware if other is logged in or not. User A would like to send A message to B, so a types up a message and sends it, the message is saved in the DB, and User A dispatches an event. If B is logged in then its is listening for an event, and hence will know there is a message waiting. Else when B logs in, it adds an eventListner for any message, and at the same time fetches all unread messages from the DB.
Any idea how i can dispatch and listen for event across sessions?
I know the other way would be to dispatch an event every few mins that Query's DB for any unread messages, but one I don't want to do a "busy waiting" on it, secondly if thats the only way how can I setup an event that is dispatched on clock tick?
Thanks for your help.
p.s I am using RPC and Coldfusion 8 to interact with my MYSQL 5 DB
Thanks for the reply. Looks like in the collaborative data enter example you mentioned it required an extra step on the user end to create a session first, thats some what in the lines for creating a chat session. Which is what I am trying to avoid. Is it possible for yourself or anyone on the forum to provide and example on how to use the Timer class that I can just initiate in my main application .mxml page, and then at every time interval (say 5min for now) it will dispatch and rpc call to the CF server, and the result Handler will deal with the rest.
Thanks for all your help. I did a bit more digging and found that you cannot do real time data transfer, if using Flash Remoting to communicate with server-side code. Flex Data Service is required, and I don't have time to explore that nor the money to setup a Flex Data Service server. So using Timer class and checking at every time interval (which I didn't want to do) is the only way to go. Thanks ATTA for your examples I will use them to move forward. If I have some spare time later on I will give Flex Data Service a try.