The Resource handler is responsible for discovering and managing the resources. There are currently three types of resources (the set can be extended when/where needed):

• The Sensors

• The Query processors. These represent different processors to specify conditions

• The Actions. These represent the possible different actions to be performed when certainconditions are satisfied

The Request Handler component is responsible for managing the asynchronous notifications, which are stored in a Subscription repository. Actually this repository is split in two entities: one for the predefined subscriptions and the other one for the subscriptions defined after an explicit subscription operation.

-- MassimoSgaravatto - 2011-04-21