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New Post: Unity 2.0 and Visual Studio 2010

ENikS — Mon, 09 Aug 2010 00:03:26 GMT

If no one objects I would like to update solution to the latest tools and libraries.

New Post: Unity 2.0 and DynamicMethodBuildPlanCreatorPolicy

scooletz — Wed, 20 Jan 2010 18:51:53 GMT

Hello,

is there any extension planned to provide more flexible build plans than created with DynamicMethodBuildPlanCreatorPolic? For instance, build plans which take into consideration whether there build process is a specific scope of a disposable resource?

regards

New Post: Remove unneeded Usings, and link to Lib folder

bradirby — Mon, 23 Nov 2009 19:42:30 GMT

Hey team - can you remove the unnecessary using clauses before checkin? There are two Usings that I had to remove before the solution would build. Just commenting out the Using was enough, so they were unnecessary. They were both for

Microsoft.Practices.EnterpriseLibrary.Common.Configuration.

One in ConfigurationExtension.cs and the other in ConfigurationExtensionConfigurator

also, can you put the 4 Unity DLL's into a Lib folder and link to them there? The solution currently refers to the GAC.

New Post: Unity and ASP.Net MVC

Billkrat — Sat, 08 Aug 2009 15:36:13 GMT

Hi rroman81,

My UnityContribution (EventAggregator) got stomped on back on changeset 18055 without any warning so I since been lone-wolfing it. I prefer the EventAggregator (pulled from the CompositeWPF) because I use PRISM and Unity quite heavily - code is consistent. I took a different approach to injecting MVC2 with Unity; I use interface interception - if you have time for code-review I would be interested in your feedback.

You'll find in the source that I have an MVCContrib which utilizes UnityContrib (EventAggregator and Logging). The wire-up magic is done in the MVCContrib.Base.GlobalBase.cs file. You'll find that minimal code changes are required to implement MVCContrib - Global.asax.cs has minor changes and controllers need only derive from MVCControllerBase.

I use Interface Interception - the code that handles IControllerFactory interception follows (source code available HERE)

ControllerCallHandler.cs

/// <summary>
/// Implement this method to execute your handler processing.
/// </summary>
/// <param name="input">Inputs to the current call to the target.</param>
/// <param name="getNext">Delegate to execute to get the next delegate in the handler
/// chain.</param>
/// <returns>Return value from the target.</returns>
public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)
{
    IMethodReturn msg;
    try
    {
        Logger.Log(string.Format("BEFORE::ControllerCallHandler.Invoke for {0}",
            input.Target.GetType().Name), 
            Category.Debug, Priority.None);

        msg = getNext()(input, getNext);

        // Create child container for each
        IUnityContainer childContainer = Container.CreateChildContainer();

        // If the controller is being handled by MVCContrib - implements IControllerBase
        // then we'll set the Container.  Attempts to do a BuildUp here do not work as
        // expected so the Container Setter is expected to perform a Container.Buildup(this)
        // See Base\ControllerBase Container setter for details
        if (msg.ReturnValue is IControllerBase)
            ((IControllerBase)msg.ReturnValue).Container = childContainer;

        Logger.Log(string.Format("AFTER::ControllerCallHandler.Invoke for {0}",
            input.Target.GetType().Name),
            Category.Debug, Priority.None);
    
    }
    catch (Exception ex)
    {
        msg = input.CreateExceptionMethodReturn(ex);
    }

    return msg;
}

I've found that Unity's Buildup has issue with dynamically generated instances so my ControllerBase.cs (implementing IControllerBase) contains the following:

/// <summary>
/// Gets or sets the container.  Set by the CustomControllerFactory
/// </summary>
/// <value>The container.</value>
public IUnityContainer Container
{
    get { return _container; }
    set
    {
        // Don't set if already set
        if (_container != null && _container.GetType().ToString() == value.GetType().ToString())
            return;

        _container = value;

        // Buildup of MVCControllerBase so that we can
        // have logger and future types
        value.BuildUp(this);

        // We'll have a Logger now that this is built up.
        Logger.Log("ControllerBase::Container (setter) -- Performing Buildup of " + GetType().Name,
            Category.Debug, Priority.None);

        // The type will be that of the derived class.
        // BuildUp of the parent controller
        value.BuildUp(GetType(), this);

        // Notify controller
        OnContainerSet();
    }
}

My HomeController looks as follows:

namespace MvcApplication2.Controllers
{
[HandleError]
public class HomeController : MVCControllerBase
{
    public HomeController()
    {
        Debug.WriteLine("HomeController:CTOR", "DEBUG");
    }

    [Dependency]
    public IDataService service { get; set; }

    [Dependency]
    public IPresentationModel model { get; set; }

    [Dependency]
    public IEventAggregator Aggregator { get; set; }

    [Dependency]
    public IAggregatorEventTokens Tokens { get; set; }

    /// <summary>
    /// We don't have constructor injection since we're using CustomControllerFactory
    /// so we'll rely on notification when the container is set.  This will be processed
    /// everytime a page is hit and our EventAggregator is a singleton so we'll have to
    /// ensure we only subscribe one time.
    /// </summary>
    protected override void OnContainerSet()
    {
        
        Logger.Log("HomeController::OnContainerSet()", Category.Debug, Priority.None);

        // GetTokens will only return null if key is not already set
        if (Tokens.GetToken(GetType().FullName) == null)
        {
            Logger.Log("HomeController::Subscribed to DataServiceEvent -- EVENT HANDLER",
                Category.Debug, Priority.None);

            // Subscribe to the DataServiceEvent
            SubscriptionToken token = Aggregator.GetEvent<DataServiceEvent>()
                .Subscribe(DataServiceHandler, ThreadOption.PublisherThread, true);

            // Set the token so we don't subscribe more than once
            Tokens.SetToken(GetType().FullName, token);
        }
    }

    public void DataServiceHandler(DataServiceEventArgs e)
    {
        Logger.Log(string.Format(
            "HomeController.DataServiceHandler STATUS = [{0}]", e.Status), 
            Category.Debug, Priority.None);
    }

    public ActionResult Index()
    {
        ViewData["Message"] = "Welcome to ASP.NET MVC!";
        Logger.Log("CONTROLLER:HomeController  -- Index() ", 
            Category.Debug, Priority.High);

        // Call the data service to get client list
        model.Clients = service.GetClients();
        return View();
    }

    public ActionResult About()
    {
        Logger.Log("CONTROLLER:HomeController  -- About()", 
            Category.Debug, Priority.High);

        ViewData["ModelClients"] = string.Format("There are {0} clients loaded!", 
            model.Clients.Count);
        return View();
    }
}

With the logging generating the following output on "Home" click:

Debug(None): BEFORE CREATE:: CustomControllerFactory.CreateController()
Debug(None): ControllerMatchingRule.Matches(member=[System.Web.Mvc.IControllerFactory])
Debug(None): ControllerMatchingRule.Matches(member=[System.Web.Mvc.IControllerFactory])
Debug(None): BEFORE::ControllerCallHandler.Invoke for Wrapped_IControllerFactory_18300eb12f6c4846875ab28ce152b54f
DEBUG: HomeController:CTOR
Debug(None): ControllerBase::Container (setter) -- Performing Buildup of HomeController
Debug(None): HomeController::OnContainerSet()
Debug(None): AFTER::ControllerCallHandler.Invoke for Wrapped_IControllerFactory_18300eb12f6c4846875ab28ce152b54f
Debug(None): AFTER CREATE:: CustomControllerFactory.CreateController() CREATED [HomeController]
Debug(High): CONTROLLER:HomeController  -- Index() 
Debug(None): HomeController.DataServiceHandler STATUS = [3 Records sent]
Debug(None): PresentationModel.Clients updated with 3 records
Debug(None): ControllerMatchingRule.Matches(member=[System.Web.Mvc.IControllerFactory])
Debug(None): ControllerMatchingRule.Matches(member=[System.Web.Mvc.IControllerFactory])
Debug(None): BEFORE::ControllerCallHandler.Invoke for Wrapped_IControllerFactory_18300eb12f6c4846875ab28ce152b54f
Debug(None): AFTER::ControllerCallHandler.Invoke for Wrapped_IControllerFactory_18300eb12f6c4846875ab28ce152b54f
Debug(None): CustomControllerFactory.ReleaseController() RELEASED [HomeController]

New Post: Unity and ASP.Net MVC

rroman81 — Fri, 07 Aug 2009 16:49:42 GMT

I'd like to nail down how to wire up Unity container to ASP.Net Mvc. Now I do not need ServiceLocator because keep-it-simple principle applies in most web apps. However, it's not super trivial on how to Integrate.

The issue that i have is that i am not quiet sure how to register with Unity all available controllerTypes to be Per Web Request life cycle.

Thoughts: If two outstanding requests are done for the same controller, i want to ensure that each uses their own instance. In high level terms, do I need to iterate over all IController implementing types in the current assembly and then register it with the container with LifeTimeManager that saves resolved/instantiated objects in the HttpContext.Current?

This is what i have so far:

public interface IContainerAccessor
    {
        /// <summary> Unity container.
        /// </summary>
        IUnityContainer Container { get; }
    }

public class UnityControllerFactory : DefaultControllerFactory
    {
        private IUnityContainer _container;

        /// <summary> Contructor that instantiates the container, taking configuration from web.config </summary>
        public UnityControllerFactory(IUnityContainer container)
        {
            this._container = container;
        }

        /// <summary>
        /// </summary>
        /// <param name="controllerType"> The type of controller to instantiate. </param>
        /// <returns>An instance of the Controller </returns>
        /// <exception cref="ArgumentNullException">This exception is thrown when controllerType is null.</exception>
        /// <exception cref="ArgumentException">This exception is thrown when controllerType type does not implement IController.</exception>
        protected override IController GetControllerInstance(Type controllerType)
        {
            if (controllerType == null)
            {
                throw new ArgumentNullException("controllerType");
            }

            if (!typeof(IController).IsAssignableFrom(controllerType))
            {
                throw new ArgumentException(
                    string.Format("Type requested is not a controller: {0}", controllerType.Name), "controllerType");
            }

            return this._container.Resolve(controllerType) as IController;
        }
    }

In Global.asax.cs

/// <summary> Unity container property. </summary>
        public static IUnityContainer Container
        {
            get
            {
                return _container;
            }
        }

        /// <summary> read-only Container property
        /// </summary>
        IUnityContainer IContainerAccessor.Container
        {
            get
            {
                return Container;
            }
        }

protected void Application_Start()
        {
            ContainerInit();
            RegisterRoutes(RouteTable.Routes);
            ControllerBuilder.Current.SetControllerFactory(new UnityControllerFactory(Container));
        }

        protected void Application_End(object sender, EventArgs e)
        {
            ContainerCleanup();
        }

        /// <summary> Clean
        /// </summary>
        private static void ContainerInit()
        {
            if (_container == null)
            {
                _container = new UnityContainer();
            }
        }

        private static void ContainerCleanup()
        {
            if (Container != null)
            {
                Container.Dispose();
            }
        }

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

Billkrat — Mon, 12 Jan 2009 13:59:07 GMT

Great! I hope to have my contribution done within the next to weeks; I'll be touching base then if I don't hear anything sooner.

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

alexanderqx — Mon, 12 Jan 2009 09:10:58 GMT

I sent a message so lets see what comes up and how to proceed on this...

Regards,
Alexander

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

Billkrat — Sun, 11 Jan 2009 22:41:34 GMT

Being I'm the new kid on the block, and you seem to know your way around, could you touch base with folks and get some input on revamping this project? The project as it stands right now doesn't offer much to the community but we can turn this around pretty quick... I have my own ideas about how I think the project should evolve but I'd rather leave that to the coordinators (don't want to step on toes).

Bill

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

alexanderqx — Sun, 11 Jan 2009 22:24:53 GMT

Also i know that Chris from Unity project is using this site as prototype respository so we need to follow up this with him i think...

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

alexanderqx — Sun, 11 Jan 2009 22:21:59 GMT

Sure we can do that, we just have to ask from original contributor if they have anything to say for it before we clean them up or what you think? We could create a folder for the ones that do not get compiled anymore and if original contributors dont get involved or reply we move them to this folder... or should we just move the stuff to one folder that does not get compiled and clean the structure?

Regards,
Alexander

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

Billkrat — Sun, 11 Jan 2009 22:10:32 GMT

Hi Alexander,

I also am working on a UnityContributions; I'm writing a WCF/Unity behavior - prototype HERE.

My intentions, in the absence of any nays, was to wipe out the existing Solution which is outdated and has redudant components, i.e., Silverlight, Interceptor. The main solution is empty and all but one solution actually compiles without error.

The plan was to emerge with:
my WCF/Unity behavior
Iron9light's Eventbroker

It looks like You, Iron9light and myself are actively involved in projects - I'd like to see if we could come to consensus on cleaning up the existing project.

New Post: Porting and making some enchangements to previusly built CanonicalObject Unity Extension

alexanderqx — Sun, 11 Jan 2009 20:42:48 GMT

I am in process of porting my previously built Unity extension (Canonical Object from SL2WithPrism) to Unity Community Contributions. Please see the below Quick Intro PDF for this new extension and let me know if you would like to see more info and if you wish to see additional features.

http://xentree.com/SL2WithPrism/UnityContributions_CanonicalObjectExtension_QuickIntro.pdf

As part of practicing and some free time now I am in process of porting this part of work to Unity contributions and I should be done in next couple of weeks with extensions on my mind. I will use Common.Unity.Extensions.CanonicalObject namespace and you will find more changesets and ported code in these days in source code tab.

Regards,
Alexander

New Post: Unity and Silverlight

michaelsync — Thu, 21 Aug 2008 09:31:08 GMT

Please refer to this thread http://www.codeplex.com/CompositeWPFContrib/Thread/View.aspx?ThreadId=33819

New Post: Unity and Silverlight

RichieScott — Thu, 21 Aug 2008 07:27:04 GMT

I've got something to work for my situation:

Use a WCF Service to download the configuration for the composite application, i.e. determine what addins are available. The configuration will have the http:// location of the assembly and the name of the class (module) that implememts IModule
Use a WebClient to download the assembly.
Use AssemblyPart.Load(e.Result) to load the assembly
Use Assembly.CreateInstance(...) to create n instance of the class that implements IModule
Execute Initialise(container) on the addin class
The addin is then responsible for its own configuration using the client's container (RegionManagerService etc...)

Having not being party to previous discussions my only concern is I am not using DILight, rather I am using SLUnity should this matter. My reason for using SLUnity is because I need to use property injection rather than constructor injection, that's because the constructor has already been called as part of the CreateInstance.

Based on this solution I can allow addins to be added to my composite application dynamically and by using the client's container they can subscibe to the pre-registered instances of the client's services.

This doesn't solve 'how do I configure the container for the client's implementation?' - for that I still think Unity.Configuration would help.

What do people think? Any comments / concerns, should I be using SLUnity over DILight?

New Post: Unity and Silverlight

RichieScott — Wed, 20 Aug 2008 13:58:47 GMT

Hi,

Firstly, as a newbie to this forum I would just like to say 'Great Work Everybody' - the discussions and source has really helped me understand the opportunites / drawbacks (special thanks to Michael Sync for his upload of Unity for Silverlight2B2) and secondly I apologise to those who subscribe to the Prism Contrib for WPF forum for raising this discussion twice.

My question is 'I was wondering if anyone out there was considering how Unity.Configuration was going to work with Silverlight?'

My scenario is I want 3rd parties to be able to inject their own modules at run-time (i.e. I don't want to have to reference them in my project) into regions I have specifically exposed to them - basically I'm allowing 3rd parties to extend my application.

Originally I had thought of calling a WCF service which 'discovered' the modules on the server using a Configuration File on the server. The service would return a List<IModule> but obviously this would not work because how would the Silverlight Client serialize IModule.

So I was wondering whether or not the Client's Isolated Storage could be used, put (very) simply it would do the following:

The Client's additional configuration (what addons were available) would be obtained using a WCF service, the result being simply a piece of XML
'Unity for Silverlight' would be altered to search the application installed assemblies directory first, if not found it would check the client's local isolated storage
If not found in either locations it would download the additional assemblies from the server to the client's isolated storage.

Does this sound mad? Has anyone tried this? Does any of it sound unfeasible, i.e. are there any security issues in using the isolated storage?

Any comments / suggestions would be appreciated

Thanks
Richie

New Post: Unity for Silverlight 2 Beta2 is uploaded.

michaelsync — Wed, 16 Jul 2008 15:54:09 GMT

Hello everybody!!

I just checked-in the full source code of Unity for Silverlight 2 (beta2) and the QuickStart sample "StopLight". You can download it from this link http://www.codeplex.com/unitycontributions/SourceControl/DownloadSourceCode.aspx?changeSetId=11969. I still need to port one sample and tests. Please feel free to let me know if you have any question or comment..

Regards,
Michael

New Post: What type of Unity 1.0 quick start examples are you looking for?

ctavares — Fri, 20 Jun 2008 22:49:52 GMT

We are well aware that the extension documentation is missing. It was a question of waiting another month or more to release with the extension docs or ship now and do the extension docs later.

NEW POST: Interception

RayHenry — Mon, 09 Jun 2008 13:53:14 GMT

I tried to use the Interception extensions and found that while they work with Unity 1.0, I get an error trying to Resolve() under Unity 1.1.

It seems that there were some changes to the Dynamic proxy creation in OB2 (DynamicMethodConstructorStrategy).

Are there any plans to update this conrtibution to work with Unity 1.1?

NEW POST: What type of Unity 1.0 quick start examples are you looking for?

DenisVuyka — Wed, 21 May 2008 12:20:24 GMT

Couple of samples dwelling on container extensions creation would be also nice-to-have. Documentation section says only that developer needs to know OB specifics and that's all. Sounds quite abusing I think.

NEW POST: What type of Unity 1.0 quick start examples are you looking for?

alexanderQX — Tue, 20 May 2008 09:43:41 GMT

Great, then this topic is resolved by these examples. :-)

Regards,
Alexander