LPS-32110 Move generation of entity to new*** methods.
LPS-32110 Simplify initialization of ClassName.
LPS-32110 Remove unused get methods.
LPS-32110 Change the order of initialization according to the dependency between instances.
LPS-32110 Move logic in init*** methods to constructor to make the dependency clear - no change.
LPS-32110 If the user names loading fails, the entire sample sql building should fail.