Config module

The sk.ipesoft.sgcom.config module contains configuration database entities and classes that handle the configuration database.
The ConfigurationManagerImpl class represents the module's main class as it encapsulates work with EntityManagerFactory and EntityManager objects.
The ConfigurationChangeTransactionImpl class controls the processing of a configuration change within a transaction. Each instance manages one transaction. All configuration change commands are put into a queue from which they are selected by an "execution loop" running in a separate thread. The commands are executed until one of them causes a configuration error - recorded in the errorMessages list - or until a commit or rollback command is executed.