Problem Implementing StructureMap in VB.Net Conversion of SharpArchitecture
- by Monkeeman69
I work in a VB.Net environment and have recently been tasked with creating an MVC enviroment to use as a base to work from. I decided to convert the latest SharpArchitecture release (Q3 2009) into VB, which on the whole has gone fine after a bit of hair pulling. I came across a problem with Castle Windsor where my custom repository interface (lives in the core/domain project) that was reference in the constructor of my test controller was not getting injected with the concrete implementation (from the data project). I hit a brick wall with this so basically decided to switch out Castle Windsor for StructureMap.
I think I have implemented this ok as everything compiles and runs and my controller ran ok when referencing a custom repository interface. It appears now that I have/or cannot now setup my generic interfaces up properly (I hope this makes sense so far as I am new to all this). When I use IRepository(Of T) (wanting it to be injected with a concrete implementation of Repository(Of Type)) in the controller constructor I am getting the following runtime error:
"StructureMap Exception Code: 202 No Default Instance defined for PluginFamily SharpArch.Core.PersistenceSupport.IRepository`1[[DebtRemedy.Core.Page, DebtRemedy.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]], SharpArch.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b5f559ae0ac4e006"
Here are my code excerpts that I am using (my project is called DebtRemedy).
My structuremap registry class
Public Class DefaultRegistry
Inherits Registry
Public Sub New()
''//Generic Repositories
AddGenericRepositories()
''//Custom Repositories
AddCustomRepositories()
''//Application Services
AddApplicationServices()
''//Validator
[For](GetType(IValidator)).Use(GetType(Validator))
End Sub
Private Sub AddGenericRepositories()
''//ForRequestedType(GetType(IRepository(Of ))).TheDefaultIsConcreteType(GetType(Repository(Of )))
[For](GetType(IEntityDuplicateChecker)).Use(GetType(EntityDuplicateChecker))
[For](GetType(IRepository(Of ))).Use(GetType(Repository(Of )))
[For](GetType(INHibernateRepository(Of ))).Use(GetType(NHibernateRepository(Of )))
[For](GetType(IRepositoryWithTypedId(Of ,))).Use(GetType(RepositoryWithTypedId(Of ,)))
[For](GetType(INHibernateRepositoryWithTypedId(Of ,))).Use(GetType(NHibernateRepositoryWithTypedId(Of ,)))
End Sub
Private Sub AddCustomRepositories()
Scan(AddressOf SetupCustomRepositories)
End Sub
Private Shared Sub SetupCustomRepositories(ByVal y As IAssemblyScanner)
y.Assembly("DebtRemedy.Core")
y.Assembly("DebtRemedy.Data")
y.WithDefaultConventions()
End Sub
Private Sub AddApplicationServices()
Scan(AddressOf SetupApplicationServices)
End Sub
Private Shared Sub SetupApplicationServices(ByVal y As IAssemblyScanner)
y.Assembly("DebtRemedy.ApplicationServices")
y.With(New FirstInterfaceConvention)
End Sub
End Class
Public Class FirstInterfaceConvention
Implements ITypeScanner
Public Sub Process(ByVal type As Type, ByVal graph As PluginGraph) Implements ITypeScanner.Process
If Not IsConcrete(type) Then
Exit Sub
End If
''//only works on concrete types
Dim firstinterface = type.GetInterfaces().FirstOrDefault()
''//grabs first interface
If firstinterface IsNot Nothing Then
graph.AddType(firstinterface, type)
Else
''//registers type
''//adds concrete types with no interfaces
graph.AddType(type)
End If
End Sub
End Class
I have tried both ForRequestedType (which I think is now deprecated) and For.
IRepository(Of T) lives in SharpArch.Core.PersistenceSupport.
Repository(Of T) lives in SharpArch.Data.NHibernate.
My servicelocator class
Public Class StructureMapServiceLocator
Inherits ServiceLocatorImplBase
Private container As IContainer
Public Sub New(ByVal container As IContainer)
Me.container = container
End Sub
Protected Overloads Overrides Function DoGetInstance(ByVal serviceType As Type, ByVal key As String) As Object
Return If(String.IsNullOrEmpty(key), container.GetInstance(serviceType), container.GetInstance(serviceType, key))
End Function
Protected Overloads Overrides Function DoGetAllInstances(ByVal serviceType As Type) As IEnumerable(Of Object)
Dim objList As New List(Of Object)
For Each obj As Object In container.GetAllInstances(serviceType)
objList.Add(obj)
Next
Return objList
End Function
End Class
My controllerfactory class
Public Class ServiceLocatorControllerFactory
Inherits DefaultControllerFactory
Protected Overloads Overrides Function GetControllerInstance(ByVal requestContext As RequestContext, ByVal controllerType As Type) As IController
If controllerType Is Nothing Then
Return Nothing
End If
Try
Return TryCast(ObjectFactory.GetInstance(controllerType), Controller)
Catch generatedExceptionName As StructureMapException
System.Diagnostics.Debug.WriteLine(ObjectFactory.WhatDoIHave())
Throw
End Try
End Function
End Class
The initialise stuff in my gloabal.asax
Dim container As IContainer = New Container(New DefaultRegistry)
ControllerBuilder.Current.SetControllerFactory(New ServiceLocatorControllerFactory())
ServiceLocator.SetLocatorProvider(Function() New StructureMapServiceLocator(container))
My test controller
Public Class DataCaptureController
Inherits BaseController
Private ReadOnly clientRepository As IClientRepository()
Private ReadOnly pageRepository As IRepository(Of Page)
Public Sub New(ByVal clientRepository As IClientRepository(), ByVal pageRepository As IRepository(Of Page))
Check.Require(clientRepository IsNot Nothing, "clientRepository may not be null")
Check.Require(pageRepository IsNot Nothing, "pageRepository may not be null")
Me.clientRepository = clientRepository
Me.pageRepository = pageRepository
End Sub
Function Index() As ActionResult
Return View()
End Function
The above works fine when I take out everything to do with the pageRepository which is IRepository(Of T).
Any help with this would be greatly appreciated.
