Have a Generic Repository:
public interface IRepository<TEntity> : IDisposable where TEntity : class { }and a Concrete Implementation:
public class Repository<TEntity> : IRepository<TEntity> where TEntity : class { }which i wanted injected into the constructor of the Controllers at runtime where the TEntity would be the Model relevant to that Controller:
public FooBarController(IRepository<FOO_BAR_TYPE> repository) { _repo = repository; }the Controller would then use Repository "_repo" to update the Model:
// // POST: /EmergencyServiceType/Create [HttpPost] public ActionResult Create(FOO_BAR_TYPE foobar) { if (ModelState.IsValid) { // GetNextSequenceValue() deals with Oracle+EF issue with auto-increment IDs foobar.FOO_BAR_ID = _repo.GetNextSequenceValue(); _repo.Add(foobar); _repo.SaveChanges(); return RedirectToAction("Index"); } return View(foobar); // display the updated Model }simonjreid elluded to the answer for me: had to add the ObjectContext to the StructureMap configuration (the Repository's purpose was to wrap up the Context generated by EntityFramework, which i called MyContextWrapper. Therefore because the Repository depended on MyContextWrapper, which in turn depends on ObjectContext):
// This avoids 'No Default Instance for ...DbConnection' exception x.For<System.Data.Objects.ObjectContext>().Use<MyContextWrapper>(); x.For<System.Web.Mvc.IController>().Use<Controllers.FooBarController>().Named("foobarcontroller"); // note that Named is required and is Case SensitiveHowever, now i get the StructureMap runtime Exception:
StructureMap Exception Code: 205
Missing requested Instance property "connectionString"
After reading a post by Jeremy Miller [A Gentle Quickstart][1] (right at the bottom) i found that you can define what arguments to pass into the constructor of your registered types ie i needed to pass in the Connection String to the Constructor of the MyCustomContext class (here is the full listing of how i am initializing the ObjectFactory:
string connStr = System.Configuration.ConfigurationManager.ConnectionStrings["MyContextWrapper"].ConnectionString; ObjectFactory.Initialize(x => { x.Scan(scan => { // Make sure BUSINESS_DOMAIN assembly is scanned scan.AssemblyContainingType<BUSINESS_DOMAIN.MyContextWrapper>(); scan.TheCallingAssembly(); scan.WithDefaultConventions(); }); // 'connStr' below is a local variable defined above x.For<System.Data.Objects.ObjectContext>() .Use<MyContextWrapper>() .Ctor<string>().Is(connStr); x.For<System.Web.Mvc.IController>().Use<Controllers.FooBarController>().Named("foobarcontroller"); });And BOOM! Can now have my Controller instaniated at runtime by StructureMap and get it to inject an instance of IRepository...happy days.
[1]: http://structuremap.net/structuremap/QuickStart.htm
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