MidCOM wrapped class for access to the at-job database entries
The Cron handler of the AT service, when executed it checks the database for entries that need to be run, then loads their relevant components and calls the interface class statically for the defined method.
Another wrap level to make midcom_services_at_entry::new_query_builder() happy
Constructor defines constants the library uses and loads required classes
At service library, this interface class is used to register jobs to the service.