CODEWITHSUNDEEP
c#inversion-of-controlstructuremap
Waliaula Makokha
Waliaula Makokha

Reputation: 815

Create instances of a class that needs a constructor argument with StructureMap

I have the following classes:

public class AllowanceManager : IAllowanceManager
{
    public AllowanceManager(ITranslationManager t_Manager, ISessionManager s_Manager)
    {...}
}

public class TranslationManager : ITranslationManager
{
    public TranslationManager(string culture) 
    {...}
}

public class SessionManager : ISessionManager
{
    public SessionManager(string key) 
    {...}
}

How can I initialize this classes up in ObjectFactory so that getting an instance of IAllowanceManager also autowires and initializes (with the constructor arguments) StateManager and TranslationManager. So that I only need to retrieve the instance of IAllowanceDeduction like so:

IAllowanceManager a_Manager = ObjectFactory....// Gets Allowancemanager configured    with initialized instances of IStateManager and ITranslationManager

Upvotes: 3

Views: 375

Answers (3)

Waliaula Makokha
Waliaula Makokha

Reputation: 815

I have come up with the following solution:

IStateManager stateManager = ObjectFactory
    .With<string>("key")
    .GetInstance<IStateManager>();

ITranslationManager translationManager = ObjectFactory
    .With<string>("culture")
    .GetInstance<ITranslationManager>();

manager = ObjectFactory
    .With<ITranslationManager>(translationManager)
    .With<IStateManager>(stateManager)
    .GetInstance<IAllowanceDeductionManager>();

Upvotes: 0

PHeiberg
PHeiberg

Reputation: 29861

Using 2.6.1 syntax it could be written:

For<ISessionManager>().Use<SessionManager>()
  .Ctor<string>("key").Is(c => GetSessionKey());
For<ITranslationManager>().Use<TranslationManager>()
  .Ctor<string>("culture").Is(c => Thread.CurrentThread.CurrentCulture.Name);
For<IAllowanceManager>.Use<AllowanceManager>();

where GetSessionKey returns your session key in a way similar to how the culture is resolved.

See this blog entry for a more in depth description of how to resolve contructor arguments.

Upvotes: 1

Jan Jongboom
Jan Jongboom

Reputation: 27352

Edit: Even shorter.

Put this in your bootstrapper code:

ForRequestedType<IAllowanceManager>().TheDefault.Is
       .ConstructedBy(() => new Allowancemanager(new StateManager(), new TranslationManager()));

Upvotes: 1

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