HandlerFactoryCache.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / HandlerFactoryCache.cs / 2 / HandlerFactoryCache.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 * Config related classes for HttpApplication 
 */
 
namespace System.Web.Configuration {

    using System;
    using System.Configuration; 
    using System.Web.Compilation;
 
    /* 
     * An object to cache a factory
     */ 
    internal class HandlerFactoryCache {
        private IHttpHandlerFactory _factory;

        internal HandlerFactoryCache(string type) { 
            Object instance = Create(type);
 
            // make sure it is either handler or handler factory 

            if (instance is IHttpHandler) { 
                // create bogus factory around it
                _factory = new HandlerFactoryWrapper((IHttpHandler)instance, GetHandlerType(type));
            }
            else if (instance is IHttpHandlerFactory) { 
                _factory = (IHttpHandlerFactory)instance;
            } 
            else { 
                throw new HttpException(SR.GetString(SR.Type_not_factory_or_handler, instance.GetType().FullName));
            } 
        }

        internal HandlerFactoryCache(HttpHandlerAction mapping) {
            Object instance = mapping.Create(); 

            // make sure it is either handler or handler factory 
 
            if (instance is IHttpHandler) {
                // create bogus factory around it 
                _factory = new HandlerFactoryWrapper((IHttpHandler)instance, GetHandlerType(mapping));
            }
            else if (instance is IHttpHandlerFactory) {
                _factory = (IHttpHandlerFactory)instance; 
            }
            else { 
                throw new HttpException(SR.GetString(SR.Type_not_factory_or_handler, instance.GetType().FullName)); 
            }
        } 

        internal IHttpHandlerFactory Factory {
            get {
                return _factory; 
            }
        } 
 
        internal Type GetHandlerType( HttpHandlerAction handlerAction ) {
            // HACKHACK: for now, let uncreatable types through and error later (for .soap factory) 
            // This design should change - developers will want to know immediately
            // when they misspell a type

            Type t = BuildManager.GetType(handlerAction.Type, true /*throwOnFail*/, false /*ignoreCase*/); 

            // throw for bad types in deferred case 
            if (!ConfigUtil.IsTypeHandlerOrFactory(t)) 
                throw new ConfigurationErrorsException(SR.GetString(SR.Type_not_factory_or_handler, handlerAction.Type),
                    handlerAction.ElementInformation.Source, handlerAction.ElementInformation.LineNumber); 

            return t;

        } 

        internal Type GetHandlerType(string type) { 
            // HACKHACK: for now, let uncreatable types through and error later (for .soap factory) 
            // This design should change - developers will want to know immediately
            // when they misspell a type 

            Type t = BuildManager.GetType(type, true /*throwOnFail*/, false /*ignoreCase*/);

            HttpRuntime.FailIfNoAPTCABit(t, null, null); 

            // throw for bad types in deferred case 
            if (!ConfigUtil.IsTypeHandlerOrFactory(t)) 
                throw new ConfigurationErrorsException(SR.GetString(SR.Type_not_factory_or_handler, type));
 
            return t;

        }
 
        internal object Create(string type) {
            // HACKHACK: for now, let uncreatable types through and error later (for .soap factory) 
            // This design should change - developers will want to know immediately 
            // when they misspell a type
 
            return HttpRuntime.CreateNonPublicInstance(GetHandlerType(type));
        }
    }
}

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