The polling event container is an implementation of the polling consumer pattern which uses the Space to receive events.
A polling event operation is mainly used when simulating Queue semantics or when using the master-worker design pattern.
By default, the polling event container starts a single thread that performs the receive operations, and invokes the event listener. It can be configured to start several concurrent consumer threads.
Both the receive operation and the actual event action can be configured to be performed under a transaction.