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  • How can you inject an asp.net (mvc2) custom membership provider using Ninject?

    - by AlDev
    OK, so I've been working on this for hours. I've found a couple of posts here, but nothing that actually resolves the problem. So, let me try it again... I have an MVC2 app using Ninject and a custom membership provider. If I try and inject the provider using the ctor, I get an error: 'No parameterless constructor defined for this object.' public class MyMembershipProvider : MembershipProvider { IMyRepository _repository; public MyMembershipProvider(IMyRepository repository) { _repository = repository; } I've also been playing around with factories and Initialize(), but everything is coming up blanks. Any thoughts/examples?

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  • Error "More than one matching bindings are available" when using Ninject.Web.Mvc 2.0 and ASP.NET MVC

    - by Cray
    Hello all, Recently I've switched to Ninject 2.0 release and started getting the following error: Error occured: Error activating SomeController More than one matching bindings are available. Activation path: 1) Request for SomeController Suggestions: 1) Ensure that you have defined a binding for SomeController only once. However, I'm unable to find certain reproduction path. Sometimes it occurs, sometimes it does not. I'm using NinjectHttpApplication for automatic controllers injection. Controllers are defined in separate assembly: public class App : NinjectHttpApplication { protected override IKernel CreateKernel() { INinjectModule[] modules = new INinjectModule[] { new MiscModule(), new ProvidersModule(), new RepositoryModule(), new ServiceModule() }; return new StandardKernel(modules); } protected override void OnApplicationStarted() { RegisterRoutes(RouteTable.Routes); RegisterAllControllersIn("Sample.Mvc"); base.OnApplicationStarted(); } /* ............. */ } Maybe someone is familiar with this error. Any advice?

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  • Is this basically what an IOC like NInject does?

    - by mrblah
    Normally I would do this: public class DBFactory { public UserDAO GetUserDao() { return new UserDao(); } } Where UserDao being the concrete implementation of IUserDao. So now my code will be littered with: DBFactory factory = new DBFactory(); IUserDao userDao = factory.GetUserDao(); User user = userDao.GetById(1); Now if I wanted to swap implementaitons, I would have to go to my DBFactory and change my code to call a different implementation. Now if I used NINject, I would bind the specific implementation on application startup, or via a config file. (or bind based on specific parameters etc. etc.). Is that all there is too it? Or is there more? (reason I am asking if I want to know how it will help me here: http://stackoverflow.com/questions/1930328/help-designing-a-order-manager-class)

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  • When is a Transient-scope object Deactivated in Ninject?

    - by nwahmaet
    When an object in Ninject is bound with InTransientScope(), the object isn't placed into the cache, since it's, er, transient and not scoped to anything. When done with the object, I can call kernel.Release(obj); this passes through to the Cache where it retrieves the cached item and calls Pipeline.Deactivate using the cached entry. But since transient objects aren't cached, this doesn't happen. I haven't been able to figure out where (or who) performs the deactivation for transient objects. Or is the assumption that transient objects are only ever activated, and that if I want a deactivateable object, I need to use some other scope?

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  • Do I put ninject in my project that contains my service layer as well?

    - by chobo2
    Hi I have 3 project files(webui,framework that contains service layers and repos and unit tests). Most of my unit testing will be done in the service layer as this will contain all the business logic. So I will be mocking out the repo. In some cases I will query my a repo from my controller(say I just need all users in the database and I am not doing any business logic for it). So I am thinking that I need to have ninject used in my framework project. Where is the best place to put it so I can use them against my repos in my service layers?

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  • how do use Ninject with class libraries I am developing?

    - by Greg
    Hi, If I am working on a class library how do I make use of Ninject here? Ie from the internal class library point of view and also from the client code? For example: should the class library have it's own IOC set up, or should it always assume the client code will supply? if no (ie it's upto the client to have the IOC in place) then where is the mapping data stored here'. Is this mapping of the class library's functionality to be places in the client? have a reusable library that is available, that uses interfaces with classes that use the getInstance concept to create concrete classes for you to use, then in this case would that make sense on the client side to use the IOC container to create instances of these classes? Or is that really applying a double layer of abstraction? Q2 Or in the cases where I'm building the reusable library myself and want the client to use an IOC container, then in my reusable library would I then dispense with any overhead of having factories or "getInstance" methods to instantiate the classes in the client? (i.e. as the IOC container would do this no?)

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  • Ninject: How do I inject into a class library ?

    - by DennyDotNet
    To start I'm using Ninject 1.5. I have two projects: Web project and a Class library. My DI configuration is within the Web project. Within my class library I have the following defined: public interface ICacheService<T> { string Identifier { get; } T Get(); void Set( T objectToCache, TimeSpan timeSpan ); bool Exists(); } And then a concrete class called CategoryCacheService. In my web project I bind the two: Bind( typeof( ICacheService<List<Category>> ) ).To( typeof(CategoryCacheService)).Using<SingletonBehavior>(); In my class library I have extension methods for the HtmlHelper class, for example: public static class Category { [Inject] public static ICacheService Categories { get; set; } public static string RenderCategories(this HtmlHelper htmlHelper) { var c = Categories.Get(); return string.Join(", ", c.Select(s = s.Name).ToArray()); } } I've been told that you cannot inject into static properties, instead I should use Kernel.Get<() - However... Since the code above is in a class library I don't have access to the Kernel. How can I get the Kernel from this point or is there a better way of doing this? Thanks!

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  • Unity IOC, AOP & Interface Interception

    - by krisg
    I've been playing around with Unity to do some AOP stuff, setting up via IOC like: ioc.RegisterType<ICustomerService, CustomerService>() .Configure<Interception>().SetInterceptorFor<ICustomerService>(new InterfaceInterceptor()); ... and then having an ICallHandler on the ICustomerService interface's methods. For teh time being i want to just get the method called, the class it's in, and the namespace for that class. So... inside the... public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext) ...method of the ICallHandler, i can access the method name via input.MethodBase.Name... if i use input.MethodBase.DeclaringType.Name i get the interface ICustomerService... BUT... how would i go about getting the implementing class "CustomerService" rather than the interface? I've been told to use input.Target.. but that just returns "DynamicModule.ns.Wrapped_ICustomerService_4f2242e5e00640ab84e4bc9e05ba0a13" Any help on this folks?

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  • Windsor Method interception (AOP)

    - by Allan
    Hi there guys, I'm trying to create interceptors for specific methods but I'm having a hard time. I can't bind an aspect to a specific method. I create the faicilities most of examples show but it still doesn't work. Can anyone give me an example of how to do this? I prefer xml conifguration, if possible. Another question, I have this code: <component id="SampleAspect" service="WindsorSample.Aspect.SampleAspect, WindsorSample" type="WindsorSample.Aspect.SampleAspect, WindsorSample"> </component> <component id="HtmlTitleRetriever" type="WindsorSample.DummyObject, WindsorSample"> <parameters> <interceptors> <interceptor>${SampleAspect}</interceptor> </interceptors> </parameters> </component> Then... IWindsorContainer container = new WindsorContainer(new XmlInterpreter()); IDummyObject retriever = container.Resolve<DummyObject>(); retriever.SomeMethod(); This aspect is not executed. Am I missing something? Am I using the wrong approach for aop? Thanks

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  • Method interception in PHP 5.*

    - by Rolf
    Hi everybody, I'm implementing a Log system for PHP, and I'm a bit stuck. All the configuration is defined in an XML file, that declares every method to be logged. XML is well parsed and converted into a multidimensionnal array (classname = array of methods). So far, so good. Let's take a simple example: #A.php class A { public function foo($bar) { echo ' // Hello there !'; } public function bar($foo) { echo " $ù$ùmezf$z !"; } } #B.php class B { public function far($boo) { echo $boo; } } Now, let's say I've this configuration file: <interceptor> <methods class="__CLASS_DIR__A.php"> <method name="foo"> <log-level>INFO</log-level> <log-message>Transaction init</log-message> </method> </methods> <methods class="__CLASS_DIR__B.php"> <method name="far"> <log-level>DEBUG</log-level> <log-message>Useless</log-message> </method> </methods> </interceptor> The thing I'd like AT RUNTIME ONLY (once the XML parser has done his job) is: #Logger.php (its definitely NOT a final version) -- generated by the XML parser class Logger { public function __call($name,$args) { $log_level = args[0]; $args = array_slice($args,1); switch($method_name) { case 'foo': case 'far': //case ..... //write in log files break; } //THEN, RELAY THE CALL TO THE INITIAL METHOD } } #"dynamic" A.php class A extends Logger { public function foo($log_level, $bar) { echo ' // Hello there !'; } public function bar($foo) { echo " $ù$ùmezf$z !"; } } #"dynamic" B.php class B extends Logger { public function far($log_level, $boo) { echo $boo; } } The big challenge here is to transform A and B into their "dynamic" versions, once the XML parser has completed its job. The ideal would be to achieve that without modifying the code of A and B at all (I mean, in the files) - or at least find a way to come back to their original versions once the program is finished. To be clear, I wanna find the most proper way to intercept method calls in PHP. What are your ideas about it ??? Thanks in advance, Rolf

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  • Issue intercepting property in Silverlight application

    - by joblot
    I am using Ninject as DI container in a Silverlight application. Now I am extending the application to support interception and started integrating DynamicProxy2 extension for Ninject. I am trying to intercept call to properties on a ViewModel and ending up getting following exception: “Attempt to access the method failed: System.Reflection.Emit.DynamicMethod..ctor(System.String, System.Type, System.Type[], System.Reflection.Module, Boolean)” This exception is thrown when invocation.Proceed() method is called. I tried two implementations of the interceptor and they both fail public class NotifyPropertyChangedInterceptor: SimpleInterceptor { protected override void AfterInvoke(IInvocation invocation) { var model = (IAutoNotifyPropertyChanged)invocation.Request.Proxy; model.OnPropertyChanged(invocation.Request.Method.Name.Substring("set_".Length)); } } public class NotifyPropertyChangedInterceptor: IInterceptor { public void Intercept(IInvocation invocation) { invocation.Proceed(); var model = (IAutoNotifyPropertyChanged)invocation.Request.Proxy; model.OnPropertyChanged(invocation.Request.Method.Name.Substring("set_".Length)); } } I want to call OnPropertyChanged method on the ViewModel when property value is set. I am using Attribute based interception. [AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)] public class NotifyPropertyChangedAttribute : InterceptAttribute { public override IInterceptor CreateInterceptor(IProxyRequest request) { if(request.Method.Name.StartsWith("set_")) return request.Context.Kernel.Get<NotifyPropertyChangedInterceptor>(); return null; } } I tested the implementation with a Console Application and it works alright. I also noted in Console Application as long as I had Ninject.Extensions.Interception.DynamicProxy2.dll in same folder as Ninject.dll I did not have to explicitly load DynamicProxy2Module into the Kernel, where as I had to explicitly load it for Silverlight application as follows: IKernel kernel = new StandardKernel(new DIModules(), new DynamicProxy2Module()); Could someone please help? Thanks

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  • Exception while hosting a WCF Service in a DependencyInjection Module ?

    - by Maciek
    Hello, I've written a small just-for-fun console project using Ninject, I'm pasting some of the code below just so that you get the idea : Program.cs using System; using Ninject; using Ninjectionn.Modules; // My namespace for my modules namespace Ninjections { class Program { static void Main(string[] args) { IKernel kernel = new StandardKernel(); kernel.Load<ServicesHostModule>(); Console.ReadKey(); } } } ServicesHostModule.cs using System; using System.ServiceModel; using Ninject; using Ninject.Modules; namespace Ninjections.Modules { public class ServicesHostModule : INinjectModule { #region INinjectModule Members public string Name { get { return "ServicesHost"; }} public void OnLoad(IKernel kernel) { if(m_host != null) m_host.Close(); else m_host = new ServiceHost(typeof(WCFTestService)); m_host.Open(); // (!) EXCEPTION HERE } public void OnUnLoad(IKernel kernel) { m_host.Close(); } #endregion } } ITestWCFService.cs using System.ServiceModel; namespace Ninjections.Modules { [ServiceContract] public interface ITestWCFService { [OperationContract] string GetString1(); [OperationContract] string GetString2(); } } An auto-generated App.config is in the ServicesHostModule project. I've "added" an existing item (the app config) as link in the main project. Q: at the m_host.Open(); line, an InvalidOperationException occurs. The message says : "Service "Ninjections.Modules.TestWCFService" has zero application endopints. What's wrong?

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  • How do I manage disposing an object when I use IoC?

    - by Aval
    How do I manage disposing an object when I use IoC? My case it is Ninject. // normal explicit dispose using (var dc = new EFContext) { } But sometimes I need to keep the context longer or between function calls. So I want to control this behavior through IoC scope. // if i use this way. how do i make sure object is disposed. var dc = ninject.Get<IContext>() // i cannot use this since the scope can change to singleton. right ?? using (var dc = ninject.Get<IContext>()) { } Sample scopes Container.Bind<IContext>().To<EFContext>().InSingletonScope(); Container.Bind<IContext>().To<EFContext>().InRequestScope();

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  • How do I manage object disposal when I use IoC?

    - by Aval
    My case it is Ninject 2. // normal explicit dispose using (var dc = new EFContext) { } But sometimes I need to keep the context longer or between function calls. So I want to control this behavior through IoC scope. // if i use this way. how do i make sure object is disposed. var dc = ninject.Get<IContext>() // i cannot use this since the scope can change to singleton. right ?? using (var dc = ninject.Get<IContext>()) { } Sample scopes Container.Bind<IContext>().To<EFContext>().InSingletonScope(); // OR Container.Bind<IContext>().To<EFContext>().InRequestScope();

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  • NInject2 Interceptor usage with NHibernate transactions

    - by Daniil Harik
    Hello, In my previous project we used NHibernate and Spring.NET. Transactions were handled by adding [Transaction] attribute to service methods. In my current project I'm using NHibernate and NInject 2 and I was wondering if it's possible to solve transaction handling using "Ninject.Extensions.Interception" and similar [Transaction] type attributes? Thank You very much!

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  • Can you do conventions-based binding with StructureMap 2.5.3?

    - by Peter Goras
    I find one of the best features of Ninject is conventions-based binding. eg. Bind<IConfigurationSource>().To<RemoteConfigurationSource>() .Only(When.Context.Target.Name.BeginsWith("remote")); Bind<IConfigurationSource>().To<LocalConfigurationSource>() .Only(When.Context.Target.Name.BeginsWith("local")); http://ninject.codeplex.com/Wiki/View.aspx?title=Conventions-Based%20Binding&referringTitle=Home Is this possible in StructureMap 2.5.3? Thanks

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  • Where to wire up events?

    - by Jeffrey Cameron
    I'm using Ninject (1.5 ... soon to be 2) and I'm curious how other people use Ninject or other IoC containers to help wire up events to objects? It seems to me in my code that I'm doing it herky-jerky all over the place and would love some advice on how to clean it up a bit.

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  • Strategy for wiring up events?

    - by Jeffrey Cameron
    I'm using Ninject (1.5 ... soon to be 2) and I'm curious how other people use Ninject or other IoC containers to help wire up events to objects? It seems to me in my code that I'm doing it herky-jerky all over the place and would love some advice on how to clean it up a bit. What are people doing out there to manage this?

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  • Convert SQL to LINQ in MVC3 with Ninject

    - by Jeff
    I'm using MVC3 and still learning LINQ. I'm having some trouble trying to convert a query to LINQ to Entities. I want to return an employee object. SELECT E.EmployeeID, E.FirstName, E.LastName, MAX(EO.EmployeeOperationDate) AS "Last Operation" FROM Employees E INNER JOIN EmployeeStatus ES ON E.EmployeeID = ES.EmployeeID INNER JOIN EmployeeOperations EO ON ES.EmployeeStatusID = EO.EmployeeStatusID INNER JOIN Teams T ON T.TeamID = ES.TeamID WHERE T.TeamName = 'MyTeam' GROUP BY E.EmployeeID, E.FirstName, E.LastName ORDER BY E.FirstName, E.LastName What I have is a few tables, but I need to get only the newest status based on the EmployeeOpertionDate. This seems to work fine in SQL. I'm also using Ninject and set my query to return Ienumerable. I played around with the group by option but it then returns IGroupable. Any guidance on converting and returning the property object type would be appreciated. Edit: I started writing this out in LINQ but I'm not sure how to properly return the correct type or cast this. public IQueryable<Employee> GetEmployeesByTeam(int teamID) { var q = from E in context.Employees join ES in context.EmployeeStatuses on E.EmployeeID equals ES.EmployeeID join EO in context.EmployeeOperations on ES.EmployeeStatusID equals EO.EmployeeStatusID join T in context.Teams on ES.TeamID equals T.TeamID where T.TeamName == "MyTeam" group E by E.EmployeeID into G select G; return q; } Edit2: This seems to work for me public IQueryable<Employee> GetEmployeesByTeam(int teamID) { var q = from E in context.Employees join ES in context.EmployeeStatuses on E.EmployeeID equals ES.EmployeeID join EO in context.EmployeeOperations.OrderByDescending(eo => eo.EmployeeOperationDate) on ES.EmployeeStatusID equals EO.EmployeeStatusID join T in context.Teams on ES.TeamID equals T.TeamID where T.TeamID == teamID group E by E.EmployeeID into G select G.FirstOrDefault(); return q; }

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  • How far does Dependency Injection reach?

    - by Baddie
    My web app solution consists of 3 projects: Web App (ASP.NET MVC) Business Logic Layer (Class Library) Database Layer (Entity Framework) I want to use Ninject to manage the lifetime of the DataContext generated by the Entity Framework in the Database Layer. The Business Logic layer consists of classes which reference repositories (located in the database layer) and my ASP.NET MVC app references the business logic layer's service classes to run code. Each repository creates an instance of the MyDataContext object from the Entity Framework Repository public class MyRepository { private MyDataContext db; public MyRepository { this.db = new MyDataContext(); } // methods } Business Logic Classes public class BizLogicClass { private MyRepository repos; public MyRepository { this.repos = new MyRepository(); } // do stuff with the repos } Will Ninject handle the lifetime of MyDataContext despite the lengthy dependency chain from the Web App to the Data Layer?

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  • No Parameterless Constructor defined for - ViewModel with UOW

    - by TheVillageIdiot
    I have a view model class which uses UnitOfWork to some database operations like fetching of items to create select lists and IPrincipal for some auditing (like modified by etc.). It cannot work without this UOW. I have configured my web site to use Ninject to inject UOW into Controllers. From controller I pass this UOW when creating view model. But when performing POST operation I am getting No parameterless constructor defined for this object. I have few SelectList type of properties which I have excluded with Bind attribute. How can I overcome this problem? Can I configure Ninject to create the objects of this type and make ModelBinder use it?

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