patterns & practices - Unity

New Post: Per Call Resolve by new() LifetimeManager

peterkae — Thu, 02 Jul 2009 06:03:20 GMT

Thanks Sarah for the quick and astonishing answer! Less is More.

Greetings

Peter

New Post: Interception is changing stack traces

jon918 — Wed, 01 Jul 2009 20:40:13 GMT

If the implementation class that I’m wrapping in an interceptor (InterfaceInterceptor) throws an exception, then my unit test prints an exception that has a stack trace rooted in the dynamically generated wrapper class rather than the actual stack trace. I found that if I wrap the exception in another exception in my call handler, then I am able to see the correct stack trace. Is this a known issue? Something I’m doing wrong? I’m new to this stuff.

public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)

        {
                var result = getNext()(input, getNext);
                var exception = result.Exception;
                if (exception != null)
                {
                    //Wrap the exception so the stack trace is preserved
                    result.Exception = new Exception(exception.Message, exception);
                }
                return result;
        }

New Post: Per Call Resolve by new() LifetimeManager

AvanadeSupport — Wed, 01 Jul 2009 13:54:55 GMT

By default, Unity creates a new instance everytime the Resolve method is called so the key is, do not specify a lifetime manager.

Sarah Urmeneta
Global Technology and Solutions
Avanade, Inc.
entlib.support@avanade.com

New Post: Per Call Resolve by new() LifetimeManager

peterkae — Wed, 01 Jul 2009 13:36:10 GMT

I just realized that a call to Resolve for a Registred Type using the ExternallyControlledLifetimeManager returns the same Instance again and again, kind of singleton behaviour. This is fine because so stated in the documentation. However, I want Resolve to return a new Instance of the Registred Type whenever I call it. For me, this would be the standard behaviour. Is there a LifetimeManager around, waiting for me to download it?

What would be the approach, write a new LifetimeManager or find the right configuration? Thanks for any hint.

btw. I am using unity configuration based.

New Post: Why does Unity create A first chance exception of type 'System.Threading.SynchronizationLockException' during startup

ctavares — Tue, 30 Jun 2009 04:43:13 GMT

See here: http://www.tavaresstudios.com/Blog/post/Writing-Custom-Lifetime-Managers.aspx

New Post: Register Type with Register Name in config file?

kimballjohnson — Tue, 30 Jun 2009 04:16:11 GMT

Sarah.

I stumbled on the fact myself just a little later.

Could have just thought about it a little more I guess.

Thank you,

Kimball

New Post: Register Type with Register Name in config file?

AvanadeSupport — Tue, 30 Jun 2009 02:29:12 GMT

Specify the registration name using the name attribute

Sarah Urmeneta
Global Technology and Solutions
Avanade, Inc.
entlib.support@avanade.com

New Post: Register Type with Register Name in config file?

kimballjohnson — Tue, 30 Jun 2009 01:15:49 GMT

When registering and resolving types in a Unity Container using code you can use 'Registration Names' to disambiguate your references that derive from an interface or base class hierarchy.

The 'registration name' text would be provided as a parameter to the register and resolve methods:

myContainer.RegisterType<IMyService, CustomerService>("Customers");

and

MyServiceBase result = myContainer.Resolve<MyServiceBase>("Customers");

However when I register types in the configuration files I do not see where the 'registration name' can be assigned

I register an Interface:

Then two types that I happen to know implement that interface:

Then I provide mappings between the interface and the two types:

That seems to correspond to this code:

myContainer.RegisterType<IEnlistmentNotification, FlexAleManager>();
myContainer.RegisterType<IEnlistmentNotification, PlaylistManager>();

but clearly what I need is a disambiguating config entry that corresponds to this code:

myContainer.RegisterType<IEnlistmentNotification, FlexAleManager>("Flex");
myContainer.RegisterType<IEnlistmentNotification, PlaylistManager>("Play");

Then when I get into my code I could do this:

IEnlistmentNotification flex = myContainer.Resolve<IEnlistmentNotification>("Flex");
IEnlistmentNotification play = myContainer.Resolve<IEnlistmentNotification>("Play");

See what I mean?

Thanks,

Kimball

New Post: Catching exceptions in CallHandlers

Melkor — Mon, 29 Jun 2009 15:23:33 GMT

First of all let me apologize for the delay, i´ve been very busy :)

I have a few classes to show you this, i will post them. If you like i could send them to you but here it goes

1. Console class

1. Console class
#region Unity Interception
            UnityContainer _container = new UnityContainer();
            _container.RegisterType<IBusinessLayerClass1, BusinessLayerClass1>();
            _container.AddNewExtension<Interception>();

            _container.Configure<Interception>()
                .SetDefaultInterceptorFor<IBusinessLayerClass1>(new InterfaceInterceptor())
                .AddPolicy("ExceptionPolicy")
                    .AddMatchingRule(new AssemblyMatchingRule("UnityTesting"))
                    .AddCallHandler(new ExceptionInterceptor());

IBusinessLayerClass1 bl1 = _container.Resolve<IBusinessLayerClass1>();
int i = 0;

            //ODD Behaviour
            //Uncomment try to have good beavhior
            //try
            //{
                i = bl1.Exception2();
            //}
            //catch (Exception ex)
            //{
            //    Console.WriteLine(":->" + ex.GetType());
            //}

Console.WriteLine(i);

            #endregion


2. BusinessLayerClass
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ExceptionInterceptionUnityConsole.Business;
using ExceptionInterceptionUnityConsole.Contracts;
using Microsoft.Practices.Unity;
namespace ExceptionInterceptionUnityConsole.Business
{
    public class BusinessLayerClass1 : IBusinessLayerClass1
    {

private ITransactionContext _ctx;

#region IBusinessLayerClass1 Members

        public ITransactionContext DataContext
        {
            get
            {
                return _ctx;
            }
            set
            {
                _ctx = value;
            }
        }

        public void BLClass1MethodA()
        {
            Console.WriteLine("BLClass1MethodA()");
        }

        public void BLClass1MethodB()
        {
            Console.WriteLine("BLClass1MethodB()");
        }

        //public void Exception1()
        //{
        //    throw new using ExceptionInterceptionUnityConsole.Business;.Exceptions.BLException();
        //}

        public int Exception2()
        {
            int a1=0;
            return 3 / a1;
        }

#endregion
}
}

3.Contracts
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Practices.Unity;
namespace ExceptionInterceptionUnityConsole.Contracts
{
    public interface IBusinessLayerClass1
    {
        ITransactionContext DataContext { get; set; }
        void BLClass1MethodA();
        void BLClass1MethodB();

//void Exception1();

int Exception2();
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ExceptionInterceptionUnityConsole.Contracts
{
    public interface ITransactionContext
    {
        bool IsAlive();
        void Begin();
        void Commit();
        void RollBack();
    }
}

4.Interceptor
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.InterceptionExtension;
using Microsoft.Practices.Unity.Configuration;

namespace ExceptionInterceptionUnityConsole.Interceptors
{
public class ExceptionInterceptor:ICallHandler
{

public ExceptionInterceptor() { }

#region ICallHandler Members

        public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext)
        {
            IMethodReturn val;
            val = getNext()(input, getNext);

            if (val.Exception != null)
            {
                Console.WriteLine("Exception has been thrown");
                Console.WriteLine(val.Exception.Message.ToString());
                Console.WriteLine("[Exiting method: {0}]", input.MethodBase.Name);
                return input.CreateExceptionMethodReturn(val.Exception);

            }
            else
            {
                Console.WriteLine("[Exiting method: {0}]", input.MethodBase.Name);
                return val;
            }

}

        public int Order
        {
            get
            {
               return 0 ;
            }
            set
            {
                throw new NotImplementedException();
            }
        }

#endregion
}
}

Again, if you prefer, or have the time, i can send the project to you

Thanx

2009/6/9 ctavares <notifications@codeplex.com>

From: ctavares

Also, one minor thing. If you're not replacing the exception, you don't have to do "return input.CreateExceptionMessageReturn(val.Exception);", you can just return val. It's already set up with the thrown exception inside it.

Read the full discussion online.

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New Post: Why does Unity create A first chance exception of type 'System.Threading.SynchronizationLockException' during startup

mwatts42 — Mon, 29 Jun 2009 14:02:34 GMT

Unity appears to use exceptions as flowcontrol during startup. This makes debugging VERY hard when break on exception is turned on. The specific error message is

A first chance exception of type 'System.Threading.SynchronizationLockException' occurred in Microsoft.Practices.Unity.dll

Created Issue: error injecting mvc application

lucamorelli — Sat, 27 Jun 2009 11:21:07 GMT

i'm adding unity support to an mvc application using as reference this article http://blogs.microsoft.co.il/blogs/gilf/archive/2009/02/08/how-to-use-unity-container-in-asp-net-mvc-framework.aspx: every controller have 2 costructors this way:

public DiarioController()
: this(new AttivitaRepository(new AttivitaDataContext()))
{ }

public DiarioController(AttivitaRepository context)
{
this.repository = context;
ValidateRequest = false;
}

if i run the program i obtain the error

Microsoft.Practices.Unity.ResolutionFailedException was unhandled by user code
Message=Resolution of the dependency failed, type = "Attivita.Controllers.DiarioController", name = "". Exception message is: The current build operation (build key Build Key[Attivita.Controllers.DiarioController, null]) failed: The parameter context could not be resolved when attempting to call constructor Attivita.Controllers.DiarioController(Attivita.Models.AttivitaRepository context). (Strategy type BuildPlanStrategy, index 3)
Source=Microsoft.Practices.Unity
TypeRequested=DiarioController
StackTrace:
at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) in D:\Sorgenti\Unity\Unity\Src\UnityContainer.cs:line 474
at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, String name) in D:\Sorgenti\Unity\Unity\Src\UnityContainer.cs:line 457
at Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name) in D:\Sorgenti\Unity\Unity\Src\UnityContainer.cs:line 155
at Microsoft.Practices.Unity.UnityContainerBase.Resolve(Type t) in D:\Sorgenti\Unity\Unity\Src\UnityContainerBase.cs:line 488
at Attivita.Repositories.UnityControllerFactory.CreateController(RequestContext requestContext, String controllerName) in d:\Sorgenti\CS 35\Attivita\Attivita\Repositories\UnityControllerFactory.cs:line 27
at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext)
at System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext)
at System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
InnerException: Microsoft.Practices.ObjectBuilder2.BuildFailedException
Message=The current build operation (build key Build Key[Attivita.Controllers.DiarioController, null]) failed: The parameter context could not be resolved when attempting to call constructor Attivita.Controllers.DiarioController(Attivita.Models.AttivitaRepository context). (Strategy type BuildPlanStrategy, index 3)
Source=Microsoft.Practices.ObjectBuilder2
BuildKey=Build Key[Attivita.Controllers.DiarioController, null]
ExecutingStrategyIndex=3
ExecutingStrategyTypeName=BuildPlanStrategy
StackTrace:
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 109
at Microsoft.Practices.ObjectBuilder2.Builder.BuildUp(IReadWriteLocator locator, ILifetimeContainer lifetime, IPolicyList policies, IStrategyChain strategies, Object buildKey, Object existing) in D:\Sorgenti\Unity\ObjectBuilder\Src\Builder.cs:line 61
at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) in D:\Sorgenti\Unity\Unity\Src\UnityContainer.cs:line 464
InnerException: System.InvalidOperationException
Message=The parameter context could not be resolved when attempting to call constructor Attivita.Controllers.DiarioController(Attivita.Models.AttivitaRepository context).
Source=Microsoft.Practices.ObjectBuilder2
StackTrace:
at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.ThrowForResolutionFailed(Exception inner, String parameterName, String constructorSignature, IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\DynamicMethod\Creation\DynamicMethodConstructorStrategy.cs:line 154
at BuildUp_Attivita.Controllers.DiarioController(IBuilderContext )
at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\DynamicMethod\DynamicMethodBuildPlan.cs:line 37
at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\BuildPlanStrategy.cs:line 40
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 92
InnerException: Microsoft.Practices.ObjectBuilder2.BuildFailedException
Message=The current build operation (build key Build Key[Attivita.Models.AttivitaRepository, null]) failed: The parameter dataContext could not be resolved when attempting to call constructor Attivita.Models.AttivitaRepository(Attivita.Models.AttivitaDataContext dataContext). (Strategy type BuildPlanStrategy, index 3)
Source=Microsoft.Practices.ObjectBuilder2
BuildKey=Build Key[Attivita.Models.AttivitaRepository, null]
ExecutingStrategyIndex=3
ExecutingStrategyTypeName=BuildPlanStrategy
StackTrace:
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 109
at Microsoft.Practices.Unity.ObjectBuilder.NamedTypeDependencyResolverPolicy.Resolve(IBuilderContext context) in D:\Sorgenti\Unity\Unity\Src\ObjectBuilder\NamedTypeDependencyResolverPolicy.cs:line 52
at BuildUp_Attivita.Controllers.DiarioController(IBuilderContext )
InnerException: System.InvalidOperationException
Message=The parameter dataContext could not be resolved when attempting to call constructor Attivita.Models.AttivitaRepository(Attivita.Models.AttivitaDataContext dataContext).
Source=Microsoft.Practices.ObjectBuilder2
StackTrace:
at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.ThrowForResolutionFailed(Exception inner, String parameterName, String constructorSignature, IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\DynamicMethod\Creation\DynamicMethodConstructorStrategy.cs:line 154
at BuildUp_Attivita.Models.AttivitaRepository(IBuilderContext )
at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\DynamicMethod\DynamicMethodBuildPlan.cs:line 37
at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\BuildPlanStrategy.cs:line 40
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 92
InnerException: Microsoft.Practices.ObjectBuilder2.BuildFailedException
Message=The current build operation (build key Build Key[Attivita.Models.AttivitaDataContext, null]) failed: The current build operation (build key Build Key[Attivita.Models.AttivitaDataContext, null]) failed: The type AttivitaDataContext has multiple constructors of length 2. Unable to disambiguate. (Strategy type DynamicMethodConstructorStrategy, index 0) (Strategy type BuildPlanStrategy, index 3)
Source=Microsoft.Practices.ObjectBuilder2
BuildKey=Build Key[Attivita.Models.AttivitaDataContext, null]
ExecutingStrategyIndex=3
ExecutingStrategyTypeName=BuildPlanStrategy
StackTrace:
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 109
at Microsoft.Practices.Unity.ObjectBuilder.NamedTypeDependencyResolverPolicy.Resolve(IBuilderContext context) in D:\Sorgenti\Unity\Unity\Src\ObjectBuilder\NamedTypeDependencyResolverPolicy.cs:line 52
at BuildUp_Attivita.Models.AttivitaRepository(IBuilderContext )
InnerException: Microsoft.Practices.ObjectBuilder2.BuildFailedException
Message=The current build operation (build key Build Key[Attivita.Models.AttivitaDataContext, null]) failed: The type AttivitaDataContext has multiple constructors of length 2. Unable to disambiguate. (Strategy type DynamicMethodConstructorStrategy, index 0)
Source=Microsoft.Practices.ObjectBuilder2
BuildKey=Build Key[Attivita.Models.AttivitaDataContext, null]
ExecutingStrategyIndex=0
ExecutingStrategyTypeName=DynamicMethodConstructorStrategy
StackTrace:
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 109
at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlanCreatorPolicy.CreatePlan(IBuilderContext context, Object buildKey) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\DynamicMethod\DynamicMethodBuildPlanCreatorPolicy.cs:line 50
at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\BuildPlanStrategy.cs:line 34
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 92
InnerException: System.InvalidOperationException
Message=The type AttivitaDataContext has multiple constructors of length 2. Unable to disambiguate.
Source=Microsoft.Practices.ObjectBuilder2
StackTrace:
at Microsoft.Practices.ObjectBuilder2.ConstructorSelectorPolicyBase`1.FindLongestConstructor(Type typeToConstruct) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\Creation\ConstructorSelectorPolicyBase.cs:line 114
at Microsoft.Practices.ObjectBuilder2.ConstructorSelectorPolicyBase`1.SelectConstructor(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\Creation\ConstructorSelectorPolicyBase.cs:line 36
at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.PreBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\BuildPlan\DynamicMethod\Creation\DynamicMethodConstructorStrategy.cs:line 54
at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in D:\Sorgenti\Unity\ObjectBuilder\Src\Strategies\StrategyChain.cs:line 92
InnerException:

here
return containerAccessor.Container.Resolve(controllerTypes.First()) as IController;
when trying to resolve the controller

if i remove the first constructor leaving just the constructor with empty param it works: is there any way to let it works without removing costructor?

New Post: Auto-mocking container extension

mvalenty — Sat, 27 Jun 2009 07:31:25 GMT

I wrote a container extension that auto generates mocks for any interfaces that aren't explicitly registered. I use it for reducing the amount of setup required in test code. You can use it like this:

[SetUp]
public void SetUp()
{
    container = new UnityContainer();
    container.AddNewExtension<AutoMockingContainerExtension>();
}

[Test]
public void Should_be_really_easy_to_test()
{
    container.RegisterMock<IDependencyThatNeedsExplicitMocking>()
        .Expect(d => d.MyMethod(It.IsAny<int>()))
        .Returns("I want to specify the return value");

    var service = container.Resolve<ServiceWithThreeDependencies>();
    var result = service.DoSomething();

    Assert.AreEqual("Look mom, I didn't have to mock the other 2 dependencies!", result);
}

There is full post with source code here http://www.agileatwork.com/auto-mocking-unity-container-extension/

New Post: String -> String type conversion

ivasena — Fri, 26 Jun 2009 15:01:22 GMT

Thanks! I've also found this post and did that way :) It's very frustrating that Unity is very poorly documented. I thought of switching to it from Spring.NET, where I coould solve all of the issues easely. But now I don't even know what to do, hence basic configuration settings takes that long

New Post: String -> String type conversion

swheaton — Fri, 26 Jun 2009 13:47:17 GMT

There is another post regarding a similar issue with the same cause (http://unity.codeplex.com/Thread/View.aspx?ThreadId=55758). In a nutshell, if the value type is a string, Unity never attempts to call the TypeConverter you specified.

I also posted my solution creating a new configuration element allowing you to specify values indirectly by referencing an appSetting key. I have created similar code for connectionString's. I will let you do the exercise of implementing that -- it should be pretty easy starting from that posting.

New Post: String -> String type conversion

ivasena — Thu, 25 Jun 2009 15:01:22 GMT

Hi!
There is a following  configuration :
<type type="IDbStorage"
    mapTo="DbStorage">
    <lifetime type="singleton"/>
    <typeConfig>
        <constructor>
            <param name="connectionString"  parameterType="System.String">
                <value value="cacheDb"
                     type="System.String"
                     typeConverter="ConnectionStringTypeConverter"/>
            </param>
        </constructor>
    </typeConfig>
</type>


Value of the connectionString is the name of the connection string in app.config. I would like the DbStorage constructor to receive not the name of the connection string, but it's value taken from the app.config. 
Unfortunately, the specified converter is NOT called, hence the provided value is a string by itself. Is it possible to solve this somehow?

New Comment on "Webcast demos"

MarcoMangia — Wed, 24 Jun 2009 20:05:36 GMT

Hope I don't miss anything but the first webcast is available here: https://www106.livemeeting.com/cc/wwe_us/view?cn=guest&id=1032382093&pw=23D44136 I have already downloaded it and watching...

New Post: Nested configuration and unity extensions

jdulay — Wed, 24 Jun 2009 18:25:01 GMT

Update: I found where the exception is being thrown explicitly in the Unity.Interception.Configuration assembly. I still can't explain why. I am continuing to debug.

/// Collection of <see cref="InterceptorTargetConfigurationElementBase"/> elements
    /// from the configuration file.
    /// </summary>
    /// <seealso cref="InterceptorTargetConfigurationElementBase"/>
    /// <seealso cref="KeyInterceptorTargetConfigurationElement"/>
    /// <seealso cref="DefaultInterceptorTargetConfigurationElement"/>
    // FxCop suppression: This is not a normal collection, not going to implement generic interfaces
    [SuppressMessage("Microsoft.Design", "CA1010:CollectionsShouldImplementGenericInterface")]
    public class InterceptorTargetConfigurationElementCollection : TypeResolvingConfigurationElementCollection
    {
        ///<summary>
        ///When overridden in a derived class, creates a new <see cref="T:System.Configuration.ConfigurationElement"></see>.
        ///</summary>
        ///<returns>
        ///A new <see cref="T:System.Configuration.ConfigurationElement"></see>.
        ///</returns>
        protected override ConfigurationElement CreateNewElement()
        {
            throw new InvalidOperationException();
        }

New Post: Nested configuration and unity extensions

jdulay — Wed, 24 Jun 2009 16:39:37 GMT

Some background: I'm using CWAB to implement Modularity. I'm following CWAB's example on how each module has it's own configuration file. I've upgraded CWAB to leverage Unity as the container. For the most part, this all works fine. I have unity configuration sections in both the web.config and the module's config that specify type aliases and mappings and everything works fine. As shown below:

/Web.config

<unity>

blah blah blah

</typeAliases>

<types>

blah blah blah

</types>

</container>

</containers>

</unity>

/MyModule/web.config

</container>
</containers>
</unity>

My root container is configured using the unity section in the root web.config. A child container is created and configured using the unity config in the MyModule/web.config.

The Problem: I want to use Unity Interception. When I add the corresponding extension, everything runs fine. But when I add an interceptor target configuration element, I get a configuration error when trying to configure the container. So when i do this:

/Web.config

<unity>

blah blah blah

</typeAliases>

<types>

blah blah blah

</types>

</extensions>

<key type=”mytype” name=”typename”/>

</interceptor>

</interceptors>

</add>

</extensionConfig>

</container>

</containers>

</unity>

/MyModule/web.config

</container>
</containers>
</unity>

I get the following error. Note how the source file is the module’s web.config even though I get the exception when trying to configure the root container using the unity section in the root web.config:

Server Error in '/REBARTestApp' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: An error occurred creating the configuration section handler for unity: Operation is not valid due to the current state of the object.

Source Error:

Line 34: </authorization>

Line 35: </compositeWeb>

Line 36: <unity>

Line 37: <containers>

Line 38: <container name="TestBizMod">

Source File: c:\Projects\REBAR\REBAR\Main\Accenture.REBAR.TestApp\WebSites\REBARTestApp\testbizmod\web.config Line: 36

Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053

The full exception information is below:

System.Configuration.ConfigurationErrorsException occurred

BareMessage="An error occurred creating the configuration section handler for unity: Operation is not valid due to the current state of the object."

Filename="c:\Projects\REBAR\REBAR\Main\Accenture.REBAR.TestApp\WebSites\REBARTestApp\testbizmod\web.config"

Line=36

Message="An error occurred creating the configuration section handler for unity: Operation is not valid due to the current state of the object. (c:\Projects\REBAR\REBAR\Main\Accenture.REBAR.TestApp\WebSites\REBARTestApp\testbizmod\web.config line 36)"

Source="System.Configuration"

StackTrace:

at System.Configuration.BaseConfigurationRecord.EvaluateOne(String[] keys, SectionInput input, Boolean isTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentResult)

at System.Configuration.BaseConfigurationRecord.Evaluate(FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentResult, Boolean getLkg, Boolean getRuntimeObject, Object& result, Object& resultRuntimeObject)

at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)

at System.Configuration.BaseConfigurationRecord.GetSection(String configKey, Boolean getLkg, Boolean checkPermission)

at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)

at System.Web.HttpContext.GetSection(String sectionName)

at System.Web.Configuration.HttpConfigurationSystem.GetSection(String sectionName)

at System.Web.Configuration.HttpConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String configKey)

at System.Configuration.ConfigurationManager.GetSection(String sectionName)

at Accenture.REBAR.EAC.Containers.UnityCompositionContainer.GetUnityConfigSection() in c:\projects\REBAR\REBAR\Main\Accenture.REBAR.EAC\Accenture.REBAR.EAC\Containers\UnityCompositionContainer.vb:line 79

InnerException: System.InvalidOperationException

Message="Operation is not valid due to the current state of the object."

Source="Microsoft.Practices.Unity.Interception.Configuration"

StackTrace:

at Microsoft.Practices.Unity.InterceptionExtension.Configuration.InterceptorTargetConfigurationElementCollection.CreateNewElement()

at System.Configuration.ConfigurationElementCollection.CreateNewElement(String elementName)

at System.Configuration.ConfigurationElementCollection.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElement.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElementCollection.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElement.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElementCollection.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElement.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElementCollection.Reset(ConfigurationElement parentElement)

at System.Configuration.ConfigurationElement.Reset(ConfigurationElement parentElement)

at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionImpl(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)

at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionWithRestrictedPermissions(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)

at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSection(Boolean inputIsTrusted, RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)

at System.Configuration.RuntimeConfigurationRecord.CreateSection(Boolean inputIsTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)

at System.Configuration.BaseConfigurationRecord.CallCreateSection(Boolean inputIsTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader, String filename, Int32 line)

InnerException:

Any ideas???

New Post: Injection of System.Int64 alias long values

LOBOMINATOR — Wed, 24 Jun 2009 13:18:07 GMT

Thanks!!! You are my day and nerve saver!

Daniel

New Post: Injection of System.Int64 alias long values

AvanadeSupport — Wed, 24 Jun 2009 13:03:56 GMT

You should specify the "type" attribute for the <value> element (type="System.Int64"). If you don't it assumes it is of type string even if you specify the parameterTye in the <param> element.

Sarah Urmeneta
Global Technology and Solutions
Avanade, Inc.
entlib.support@avanade.com