Difference between PollableChannel and SubscribableChannel

[sapana_patel]

hello what is difference between PollableChannel and SubscribableChannel?

[Mark Fisher]

A PollableChannel provides a receive() method to be actively invoked by Polling Consumers, while a SubscribableChannel provides a subscribe() method so that Event Driven Consumers are invoked when a Message arrives.

Does that clarify?
-Mark

[oleg.zhurakousky]

EventDriven model = SubscribableChannel
On Demand (where you are in control of demand) = PollableChannel.

[sapana_patel]

Thanks for reply but need more help in understanding.

Is it like PollableChannel is synchronous messaging and SubsribeableChannel is asynchronous messageing

receive() method in PollableChannel does not have argument. (PULL)
but subscribe() method needs MessageHandler.(PUSH)

[Mark Fisher]

Yes, you've got it. The receive() method actually returns a Message while the subscribe() method allows registration of a MessageHandler to be invoked asynchronously.

You can find more information in the reference manual:
http://static.springsource.org/sprin...reference.html

[sapana_patel]

Thank you. Now I got it.