System State Database

The SystemStateDatabase stores the current state of all aircraft being tracked by the system. It is designed to be capable of sorting, merging and interpolating input data as it is updated by the various input sources.

Updates to the database trigger a SystemStateDatabaseListener.onSystemStateUpdate on any SystemStateDatabaseListener currently listening to the database, letting them know that an update has been recieved, and a list of aircraft whos state has been affected.