Using the preceding approach, you could divide the abstraction of the domain service into two parts—the main service abstraction and a read-only service abstraction:
public abstract class ReadOnlyBaseService<TE, T> {
private final Repository<TE, T> repository;
ReadOnlyBaseService(ReadOnlyRepository<TE, T> repository) {
this.repository = repository;
}
...
}
The following diagram contains the OTRS services and their relationships:
Domain services
Now, we could use this ReadOnlyBaseService to create BaseService. Here, we are using the dependency injection pattern via a constructor to map concrete objects with abstraction: ...
