StructureMap - Injecting a dependency into a base class?
- by David
In my domain I have a handful of "processor" classes which hold the bulk of the business logic. Using StructureMap with default conventions, I inject repositories into those classes for their various IO (databases, file system, etc.). For example:
public interface IHelloWorldProcessor
{
string HelloWorld();
}
public class HelloWorldProcessor : IHelloWorldProcessor
{
private IDBRepository _dbRepository;
public HelloWorldProcessor(IDBRepository dbRepository)
{
_dbRepository = dbrepository;
}
public string HelloWorld(){ return _dbRepository.GetHelloWorld(); }
}
Now, there are some repositories that I'd like to be available to all processors, so I made a base class like this:
public class BaseProcessor
{
protected ICommonRepository _commonRepository;
public BaseProcessor(ICommonRepository commonRepository)
{
_commonRepository = commonRepository;
}
}
But when my other processors inherit from it, I get a compiler error on each one saying that there's no constructor for BaseProcessor which takes zero arguments.
Is there a way to do what I'm trying to do here? That is, to have common dependencies injected into a base class that my other classes can use without having to write the injections into each one?
