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511 lines
27 KiB
C#
511 lines
27 KiB
C#
// This software is part of the Autofac IoC container
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// Copyright © 2011 Autofac Contributors
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// http://autofac.org
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Web;
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using System.Web.Mvc;
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using Autofac.Builder;
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using Autofac.Core;
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using Autofac.Features.Scanning;
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namespace Autofac.Integration.Mvc
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{
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/// <summary>
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/// Extends <see cref="ContainerBuilder"/> with methods to support ASP.NET MVC.
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/// </summary>
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public static class RegistrationExtensions
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{
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/// <summary>
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/// Share one instance of the component within the context of a single
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/// HTTP request.
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/// </summary>
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/// <typeparam name="TLimit">Registration limit type.</typeparam>
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/// <typeparam name="TStyle">Registration style.</typeparam>
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/// <typeparam name="TActivatorData">Activator data type.</typeparam>
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/// <param name="registration">The registration to configure.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<TLimit, TActivatorData, TStyle>
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InstancePerHttpRequest<TLimit, TActivatorData, TStyle>(
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this IRegistrationBuilder<TLimit, TActivatorData, TStyle> registration)
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{
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if (registration == null) throw new ArgumentNullException("registration");
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return registration.InstancePerMatchingLifetimeScope(RequestLifetimeScopeProvider.HttpRequestTag);
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}
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/// <summary>
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/// Register types that implement IController in the provided assemblies.
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/// </summary>
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/// <param name="builder">The container builder.</param>
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/// <param name="controllerAssemblies">Assemblies to scan for controllers.</param>
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/// <returns>Registration builder allowing the controller components to be customised.</returns>
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public static IRegistrationBuilder<object, ScanningActivatorData, DynamicRegistrationStyle>
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RegisterControllers(
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this ContainerBuilder builder,
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params Assembly[] controllerAssemblies)
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{
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return builder.RegisterAssemblyTypes(controllerAssemblies)
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.Where(t => typeof(IController).IsAssignableFrom(t) &&
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t.Name.EndsWith("Controller", StringComparison.Ordinal));
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}
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/// <summary>
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/// Inject an IActionInvoker into the controller's ActionInvoker property.
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/// </summary>
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/// <typeparam name="TLimit">Limit type.</typeparam>
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/// <typeparam name="TActivatorData">Activator data.</typeparam>
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/// <typeparam name="TRegistrationStyle">Registration style.</typeparam>
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/// <param name="registrationBuilder">The registration builder.</param>
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/// <returns>A registration builder.</returns>
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public static IRegistrationBuilder<TLimit, TActivatorData, TRegistrationStyle>
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InjectActionInvoker<TLimit, TActivatorData, TRegistrationStyle>(
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this IRegistrationBuilder<TLimit, TActivatorData, TRegistrationStyle> registrationBuilder)
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{
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return registrationBuilder.InjectActionInvoker(new TypedService(typeof(IActionInvoker)));
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}
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/// <summary>
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/// Inject an IActionInvoker into the controller's ActionInvoker property.
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/// </summary>
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/// <typeparam name="TLimit">Limit type.</typeparam>
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/// <typeparam name="TActivatorData">Activator data.</typeparam>
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/// <typeparam name="TRegistrationStyle">Registration style.</typeparam>
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/// <param name="registrationBuilder">The registration builder.</param>
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/// <param name="actionInvokerService">Service used to resolve the action invoker.</param>
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/// <returns>A registration builder.</returns>
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public static IRegistrationBuilder<TLimit, TActivatorData, TRegistrationStyle>
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InjectActionInvoker<TLimit, TActivatorData, TRegistrationStyle>(
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this IRegistrationBuilder<TLimit, TActivatorData, TRegistrationStyle> registrationBuilder,
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Service actionInvokerService)
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{
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if (registrationBuilder == null) throw new ArgumentNullException("registrationBuilder");
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if (actionInvokerService == null) throw new ArgumentNullException("actionInvokerService");
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return registrationBuilder.OnActivating(e =>
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{
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var controller = e.Instance as Controller;
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if (controller != null)
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controller.ActionInvoker = (IActionInvoker)e.Context.ResolveService(actionInvokerService);
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});
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}
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/// <summary>
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/// Registers the <see cref="AutofacModelBinderProvider"/>.
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/// </summary>
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/// <param name="builder">The container builder.</param>
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public static void RegisterModelBinderProvider(this ContainerBuilder builder)
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{
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if (builder == null) throw new ArgumentNullException("builder");
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builder.RegisterType<AutofacModelBinderProvider>()
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.As<IModelBinderProvider>()
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.SingleInstance();
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}
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/// <summary>
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/// Sets a provided registration to act as an <see cref="System.Web.Mvc.IModelBinder"/>
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/// for the specified list of types.
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/// </summary>
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/// <param name="registration">
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/// The registration for the type or object instance that will act as
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/// the model binder.
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/// </param>
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/// <param name="types">
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/// The list of model <see cref="System.Type"/> for which the <paramref name="registration" />
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/// should be a model binder.
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/// </param>
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/// <typeparam name="TLimit">
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/// Registration limit type.
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/// </typeparam>
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/// <typeparam name="TActivatorData">
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/// Activator data type.
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/// </typeparam>
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/// <typeparam name="TRegistrationStyle">
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/// Registration style.
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/// </typeparam>
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/// <returns>
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/// An Autofac registration that can be modified as needed.
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/// </returns>
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/// <exception cref="System.ArgumentNullException">
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/// Thrown if <paramref name="registration" /> or <paramref name="types" /> is <see langword="null" />.
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/// </exception>
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/// <exception cref="System.ArgumentException">
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/// Thrown if <paramref name="types" /> is empty or contains all <see langword="null" />
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/// values.
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/// </exception>
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/// <remarks>
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/// <para>
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/// The declarative mechanism of registering model binders with Autofac
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/// is through use of <see cref="Autofac.Integration.Mvc.RegistrationExtensions.RegisterModelBinders"/>
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/// and the <see cref="Autofac.Integration.Mvc.ModelBinderTypeAttribute"/>.
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/// This method is an imperative alternative.
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/// </para>
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/// <para>
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/// The two mechanisms are mutually exclusive. If you register a model
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/// binder using <see cref="Autofac.Integration.Mvc.RegistrationExtensions.RegisterModelBinders"/>
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/// and register the same model binder with this method, the results
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/// are not automatically merged together - standard dependency
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/// registration/resolution rules will be used to manage the conflict.
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/// </para>
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/// <para>
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/// Any <see langword="null" /> values provided in <paramref name="types" />
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/// will be removed prior to registration.
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/// </para>
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/// </remarks>
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public static IRegistrationBuilder<TLimit, TActivatorData, TRegistrationStyle> AsModelBinderForTypes<TLimit, TActivatorData, TRegistrationStyle>(this IRegistrationBuilder<TLimit, TActivatorData, TRegistrationStyle> registration, params Type[] types)
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where TActivatorData : IConcreteActivatorData
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where TRegistrationStyle : SingleRegistrationStyle
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{
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if (registration == null)
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{
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throw new ArgumentNullException("registration");
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}
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if (types == null)
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{
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throw new ArgumentNullException("types");
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}
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var typeList = types.Where(type => type != null).ToList();
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if (typeList.Count == 0)
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{
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throw new ArgumentException(RegistrationExtensionsResources.InvalidModelBinderType, "types");
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}
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return registration.As<IModelBinder>().WithMetadata(AutofacModelBinderProvider.MetadataKey, typeList);
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}
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/// <summary>
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/// Register types that implement <see cref="IModelBinder"/> in the provided assemblies
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/// and have a <see cref="Autofac.Integration.Mvc.ModelBinderTypeAttribute"/>.
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/// </summary>
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/// <param name="builder">The container builder.</param>
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/// <param name="modelBinderAssemblies">Assemblies to scan for model binders.</param>
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/// <returns>A registration builder.</returns>
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/// <exception cref="System.ArgumentNullException">
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/// Thrown if <paramref name="builder" /> or <paramref name="modelBinderAssemblies" /> is <see langword="null" />.
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/// </exception>
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/// <remarks>
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/// <para>
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/// The declarative mechanism of registering model binders with Autofac
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/// is through use of this method and the
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/// <see cref="Autofac.Integration.Mvc.ModelBinderTypeAttribute"/>.
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/// If you would like more imperative control over registration for your
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/// model binders, see the <see cref="AsModelBinderForTypes{TLimit,TActivatorData,TRegistrationStyle}"/>
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/// method.
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/// </para>
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/// <para>
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/// The two mechanisms are mutually exclusive. If you register a model
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/// binder using <see cref="AsModelBinderForTypes{TLimit,TActivatorData,TRegistrationStyle}"/>
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/// and register the same model binder with this method, the results
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/// are not automatically merged together - standard dependency
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/// registration/resolution rules will be used to manage the conflict.
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/// </para>
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/// <para>
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/// This method only registers types that implement <see cref="IModelBinder"/>
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/// and are marked with the <see cref="Autofac.Integration.Mvc.ModelBinderTypeAttribute"/>.
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/// The model binder must have the attribute because the
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/// <see cref="Autofac.Integration.Mvc.AutofacModelBinderProvider"/> uses
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/// the associated metadata - from the attribute(s) - to resolve the
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/// binder based on model type. If there aren't any attributes, there
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/// won't be any metadata, so the model binder will be technically
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/// registered but will never actually be resolved.
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/// </para>
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/// <para>
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/// If your model is not marked with the attribute, or if you don't want
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/// to use attributes, use the
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/// <see cref="AsModelBinderForTypes{TLimit,TActivatorData,TRegistrationStyle}"/>
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/// extension instead.
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/// </para>
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/// </remarks>
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public static IRegistrationBuilder<object, ScanningActivatorData, DynamicRegistrationStyle>
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RegisterModelBinders(this ContainerBuilder builder, params Assembly[] modelBinderAssemblies)
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{
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if (builder == null) throw new ArgumentNullException("builder");
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if (modelBinderAssemblies == null) throw new ArgumentNullException("modelBinderAssemblies");
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return builder.RegisterAssemblyTypes(modelBinderAssemblies)
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.Where(type => typeof(IModelBinder).IsAssignableFrom(type) && type.GetCustomAttributes(typeof(ModelBinderTypeAttribute), true).Length > 0)
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.As<IModelBinder>()
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.InstancePerHttpRequest()
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.WithMetadata(AutofacModelBinderProvider.MetadataKey, type =>
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(from ModelBinderTypeAttribute attribute in type.GetCustomAttributes(typeof(ModelBinderTypeAttribute), true)
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from targetType in attribute.TargetTypes
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select targetType).ToList());
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}
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/// <summary>
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/// Registers the <see cref="AutofacFilterProvider"/>.
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/// </summary>
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/// <param name="builder">The container builder.</param>
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public static void RegisterFilterProvider(this ContainerBuilder builder)
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{
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if (builder == null) throw new ArgumentNullException("builder");
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foreach (var provider in FilterProviders.Providers.OfType<FilterAttributeFilterProvider>().ToArray())
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FilterProviders.Providers.Remove(provider);
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builder.RegisterType<AutofacFilterProvider>()
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.As<IFilterProvider>()
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.SingleInstance();
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}
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/// <summary>
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/// Cache instances in the web session. This implies external ownership (disposal is not
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/// available.) All dependencies must also have external ownership.
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/// </summary>
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/// <remarks>
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/// It is strongly recommended that components cached per-session do not take dependencies on
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/// other services.
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/// </remarks>
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/// <typeparam name="TLimit">Registration limit type.</typeparam>
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/// <typeparam name="TSingleRegistrationStyle">Registration style.</typeparam>
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/// <typeparam name="TActivatorData">Activator data type.</typeparam>
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/// <param name="registration">The registration to configure.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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[SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "It is the responsibility of the registry to dispose of registrations.")]
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public static IRegistrationBuilder<TLimit, TActivatorData, TSingleRegistrationStyle>
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CacheInSession<TLimit, TActivatorData, TSingleRegistrationStyle>(
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this IRegistrationBuilder<TLimit, TActivatorData, TSingleRegistrationStyle> registration)
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where TActivatorData : IConcreteActivatorData
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where TSingleRegistrationStyle : SingleRegistrationStyle
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{
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if (registration == null) throw new ArgumentNullException("registration");
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var services = registration.RegistrationData.Services.ToArray();
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registration.RegistrationData.ClearServices();
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return registration
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.ExternallyOwned()
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.OnRegistered(e => e.ComponentRegistry.Register(RegistrationBuilder
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.ForDelegate((c, p) =>
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{
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var session = HttpContext.Current.Session;
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object result;
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lock (session.SyncRoot)
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{
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result = session[e.ComponentRegistration.Id.ToString()];
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if (result == null)
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{
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result = c.ResolveComponent(e.ComponentRegistration, p);
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session[e.ComponentRegistration.Id.ToString()] = result;
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}
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}
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return result;
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})
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.As(services)
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.InstancePerLifetimeScope()
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.ExternallyOwned()
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.CreateRegistration()));
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IActionFilter"/> for the specified controller action.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="actionSelector">The action selector.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsActionFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration,
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Expression<Action<TController>> actionSelector, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IActionFilter, TController>(registration, AutofacFilterProvider.ActionFilterMetadataKey, actionSelector, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IActionFilter"/> for the specified controller.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsActionFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IActionFilter, TController>(registration, AutofacFilterProvider.ActionFilterMetadataKey, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IAuthorizationFilter"/> for the specified controller action.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="actionSelector">The action selector.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsAuthorizationFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration,
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Expression<Action<TController>> actionSelector, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IAuthorizationFilter, TController>(registration, AutofacFilterProvider.AuthorizationFilterMetadataKey, actionSelector, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IAuthorizationFilter"/> for the specified controller.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsAuthorizationFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IAuthorizationFilter, TController>(registration, AutofacFilterProvider.AuthorizationFilterMetadataKey, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IExceptionFilter"/> for the specified controller action.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="actionSelector">The action selector.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsExceptionFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration,
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Expression<Action<TController>> actionSelector, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IExceptionFilter, TController>(registration, AutofacFilterProvider.ExceptionFilterMetadataKey, actionSelector, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IExceptionFilter"/> for the specified controller.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsExceptionFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IExceptionFilter, TController>(registration, AutofacFilterProvider.ExceptionFilterMetadataKey, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IResultFilter"/> for the specified controller action.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="actionSelector">The action selector.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsResultFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration,
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Expression<Action<TController>> actionSelector, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IResultFilter, TController>(registration, AutofacFilterProvider.ResultFilterMetadataKey, actionSelector, order);
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}
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/// <summary>
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/// Sets the provided registration to act as an <see cref="IResultFilter"/> for the specified controller.
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/// </summary>
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/// <typeparam name="TController">The type of the controller.</typeparam>
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/// <param name="registration">The registration.</param>
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/// <param name="order">The order in which the filter is applied.</param>
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/// <returns>A registration builder allowing further configuration of the component.</returns>
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public static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsResultFilterFor<TController>(this IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration, int order = Filter.DefaultOrder)
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where TController : IController
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{
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return AsFilterFor<IResultFilter, TController>(registration, AutofacFilterProvider.ResultFilterMetadataKey, order);
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}
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static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsFilterFor<TFilter, TController>(IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration, string metadataKey, Expression<Action<TController>> actionSelector, int order)
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where TController : IController
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{
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if (registration == null) throw new ArgumentNullException("registration");
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if (actionSelector == null) throw new ArgumentNullException("actionSelector");
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var limitType = registration.ActivatorData.Activator.LimitType;
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if (!limitType.IsAssignableTo<TFilter>())
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{
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var message = string.Format(CultureInfo.CurrentCulture, RegistrationExtensionsResources.MustBeAssignableToFilterType,
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limitType.FullName, typeof(TFilter).FullName);
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throw new ArgumentException(message, "registration");
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}
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var metadata = new FilterMetadata
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{
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ControllerType = typeof(TController),
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FilterScope = FilterScope.Action,
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MethodInfo = GetMethodInfo(actionSelector),
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Order = order
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};
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return registration.As<TFilter>().WithMetadata(metadataKey, metadata);
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}
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static IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle>
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AsFilterFor<TFilter, TController>(IRegistrationBuilder<object, IConcreteActivatorData, SingleRegistrationStyle> registration, string metadataKey, int order)
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where TController : IController
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{
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if (registration == null) throw new ArgumentNullException("registration");
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var limitType = registration.ActivatorData.Activator.LimitType;
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if (!limitType.IsAssignableTo<TFilter>())
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{
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var message = string.Format(CultureInfo.CurrentCulture, RegistrationExtensionsResources.MustBeAssignableToFilterType,
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limitType.FullName, typeof(TFilter).FullName);
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throw new ArgumentException(message, "registration");
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}
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var metadata = new FilterMetadata
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{
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ControllerType = typeof(TController),
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FilterScope = FilterScope.Controller,
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MethodInfo = null,
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Order = order
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};
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return registration.As<TFilter>().WithMetadata(metadataKey, metadata);
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}
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static MethodInfo GetMethodInfo(LambdaExpression expression)
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{
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var outermostExpression = expression.Body as MethodCallExpression;
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if (outermostExpression == null)
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throw new ArgumentException(RegistrationExtensionsResources.InvalidActionExpress);
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return outermostExpression.Method;
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}
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}
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}
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